fix: fixed config file

fix download modes
fix
2026-07-04 04:53:58 +03:00 · 2026-05-15 23:01:26 +03:00 · 2026-05-15 22:57:40 +03:00 · 2026-05-15 21:43:33 +03:00 · 2026-05-15 20:07:53 +03:00 · 2026-05-15 19:19:08 +03:00
63 changed files with 2385 additions and 1453 deletions
@@ -0,0 +1,16 @@
+version: 2
+updates:
+  - package-ecosystem: pip
+    directory: "/"
+    schedule:
+      interval: daily
+      time: "10:00"
+    groups:
+      python-packages:
+        patterns:
+          - "*"
+        
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
@@ -1,298 +0,0 @@
-name: Build Release
-
-on:
-  workflow_dispatch:
-    inputs:
-      tag:
-        description: "Release tag (e.g., v0.1.0)"
-        required: true
-        type: string
-
-permissions:
-  contents: write
-  packages: write
-
-jobs:
-  build-windows-package:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v5
-
-      - name: Install dependencies
-        run: sudo apt update && sudo apt install -y unzip zip curl
-
-      - name: Get version from tag
-        id: version
-        shell: bash
-        run: |
-          VERSION="${{ inputs.tag }}"
-          VERSION="${VERSION#v}"
-          echo "version=$VERSION" >> $GITHUB_OUTPUT
-
-      - name: Prepare Windows package
-        run: |
-          set -e
-          VERSION="${{ steps.version.outputs.version }}"
-          mkdir -p "$GITHUB_WORKSPACE/dist/windows/bin"
-          cp "$GITHUB_WORKSPACE/yt-playlist-main.py" "$GITHUB_WORKSPACE/dist/windows/"
-
-          # yt-dlp
-          curl -fL --retry 3 -H "User-Agent: github-actions" \
-            -o "$GITHUB_WORKSPACE/dist/windows/bin/yt-dlp.exe" \
-            https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp.exe
-
-          # FFmpeg Windows static
-          curl -fL --retry 3 -H "User-Agent: github-actions" \
-            -o "$GITHUB_WORKSPACE/dist/windows/ffmpeg.zip" \
-            https://www.gyan.dev/ffmpeg/builds/ffmpeg-release-essentials.zip
-          unzip -q "$GITHUB_WORKSPACE/dist/windows/ffmpeg.zip" -d "$GITHUB_WORKSPACE/dist/windows/ffmpeg_temp"
-          mv $(find "$GITHUB_WORKSPACE/dist/windows/ffmpeg_temp" -name ffmpeg.exe | head -n 1) "$GITHUB_WORKSPACE/dist/windows/bin/ffmpeg.exe"
-
-          # aria2c Windows static
-          curl -fL --retry 3 -H "User-Agent: github-actions" \
-            -o "$GITHUB_WORKSPACE/dist/windows/aria2c.zip" \
-            https://github.com/aria2/aria2/releases/download/release-1.37.0/aria2-1.37.0-win-64bit-build1.zip
-          unzip "$GITHUB_WORKSPACE/dist/windows/aria2c.zip" -d "$GITHUB_WORKSPACE/dist/windows/"
-          mv "$GITHUB_WORKSPACE/dist/windows/aria2-1.37.0-win-64bit-build1/aria2c.exe" "$GITHUB_WORKSPACE/dist/windows/bin/aria2c.exe"
-
-          rm -rf "$GITHUB_WORKSPACE/dist/windows/ffmpeg_temp" "$GITHUB_WORKSPACE/dist/windows/aria2-1.37.0-win-64bit-build1" "$GITHUB_WORKSPACE/dist/windows/ffmpeg.zip" "$GITHUB_WORKSPACE/dist/windows/aria2c.zip"
-
-          # Create windows archive
-          cd "$GITHUB_WORKSPACE/dist/windows"
-          ZIP_NAME="yt-playlist-windows-${VERSION}.zip"
-          zip -r "$GITHUB_WORKSPACE/$ZIP_NAME" *
-          echo "ZIP_PATH=$GITHUB_WORKSPACE/$ZIP_NAME" >> $GITHUB_ENV
-
-      - name: Upload Windows artifact
-        uses: actions/upload-artifact@v6
-        with:
-          name: windows-release
-          path: ${{ github.workspace }}/yt-playlist-windows-*.zip
-
-  build-linux-package:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v5
-
-      - name: Get version from tag
-        id: version
-        shell: bash
-        run: |
-          VERSION="${{ inputs.tag }}"
-          VERSION="${VERSION#v}"
-          echo "version=$VERSION" >> $GITHUB_OUTPUT
-
-      - name: Install dependencies
-        run: |
-          sudo apt update
-          sudo apt install -y unzip zip curl wget build-essential pkg-config libssl-dev zlib1g-dev
-
-      - name: Prepare workspace
-        run: |
-          set -e
-          mkdir -p "$GITHUB_WORKSPACE/dist/linux/bin"
-          cp "$GITHUB_WORKSPACE/yt-playlist-main.py" "$GITHUB_WORKSPACE/dist/linux/"
-
-      - name: Download yt-dlp
-        run: |
-          curl -fL --retry 3 -H "User-Agent: github-actions" \
-            -o "$GITHUB_WORKSPACE/dist/linux/bin/yt-dlp" \
-            https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_linux
-          chmod +x "$GITHUB_WORKSPACE/dist/linux/bin/yt-dlp"
-
-      - name: Download FFmpeg static
-        run: |
-          curl -fL --retry 3 -H "User-Agent: github-actions" \
-            -o "$GITHUB_WORKSPACE/dist/linux/ffmpeg.tar.xz" \
-            https://johnvansickle.com/ffmpeg/releases/ffmpeg-release-amd64-static.tar.xz
-          mkdir -p "$GITHUB_WORKSPACE/dist/linux/ffmpeg_temp"
-          tar -xf "$GITHUB_WORKSPACE/dist/linux/ffmpeg.tar.xz" -C "$GITHUB_WORKSPACE/dist/linux/ffmpeg_temp" --strip-components=1
-          mv "$GITHUB_WORKSPACE/dist/linux/ffmpeg_temp/ffmpeg" "$GITHUB_WORKSPACE/dist/linux/bin/ffmpeg"
-          chmod +x "$GITHUB_WORKSPACE/dist/linux/bin/ffmpeg"
-      
-      - name: Restore aria2 cache
-        id: aria2-cache
-        uses: actions/cache@v4
-        with:
-          path: dist/linux/bin/aria2c
-          key: aria2c-${{ runner.os }}-1.37.0
-            
-      - name: Build aria2c if not cached
-        if: steps.aria2-cache.outputs.cache-hit != 'true'   
-        run: |
-          set -e
-          mkdir -p "$GITHUB_WORKSPACE/dist/linux/bin"
-
-          mkdir -p "$GITHUB_WORKSPACE/dist/linux/aria2c_build"
-          cd "$GITHUB_WORKSPACE"
-          wget https://github.com/aria2/aria2/releases/download/release-1.37.0/aria2-1.37.0.tar.gz
-          tar -xzf aria2-1.37.0.tar.gz
-          cd aria2-1.37.0
-          CFLAGS="-Os -s" LDFLAGS="-static" ./configure \
-            --enable-static --disable-shared \
-            --disable-libaria2 --without-ca-bundle \
-            --without-libnettle --without-libgcrypt \
-            --without-libssh2 --without-libexpat \
-            --without-libxml2 --without-libsqlite3 \
-            --with-openssl
-          make -j"$(nproc)"
-          strip src/aria2c
-          cp src/aria2c "$GITHUB_WORKSPACE/dist/linux/bin/aria2c"
-          chmod +x "$GITHUB_WORKSPACE/dist/linux/bin/aria2c"
-          rm -rf "$GITHUB_WORKSPACE/dist/linux/aria2c_build" "$GITHUB_WORKSPACE/aria2-1.37.0" "$GITHUB_WORKSPACE/aria2-1.37.0.tar.gz"
-
-
-      - name: Show cache status and bin contents
-        run: |
-          echo "Cache hit: ${{ steps.aria2-cache.outputs.cache-hit }}"
-          echo "Listing dist/linux/bin:" 
-          ls -la dist/linux/bin || true
-
-      - name: Cleanup FFmpeg temp
-        run: rm -rf "$GITHUB_WORKSPACE/dist/linux/ffmpeg_temp" "$GITHUB_WORKSPACE/dist/linux/ffmpeg.tar.xz"
-
-      - name: Archive Linux package
-        run: |
-          set -e
-          VERSION="${{ steps.version.outputs.version }}"
-          cd "$GITHUB_WORKSPACE/dist/linux"
-          TAR_NAME="yt-playlist-linux-${VERSION}.tar.gz"
-          tar -czf "$GITHUB_WORKSPACE/$TAR_NAME" *
-
-      - name: Upload Linux artifact
-        uses: actions/upload-artifact@v6
-        with:
-          name: linux-release
-          path: ${{ github.workspace }}/yt-playlist-linux-${{ steps.version.outputs.version }}.tar.gz
-
-  build-docker-image:
-    runs-on: ubuntu-latest
-    needs: [build-linux-package]
-    steps:
-      - uses: actions/checkout@v5
-
-      - name: Get version from tag
-        id: version
-        shell: bash
-        run: |
-          VERSION="${{ inputs.tag }}"
-          VERSION="${VERSION#v}"
-          echo "version=$VERSION" >> $GITHUB_OUTPUT
-
-      - name: Set docker image names
-        run: |
-          echo "RELEASE_IMAGE=ghcr.io/${GITHUB_ACTOR}/ytpld:${{ steps.version.outputs.version }}" >> $GITHUB_ENV
-          echo "LATEST_IMAGE=ghcr.io/${GITHUB_ACTOR}/ytpld:latest" >> $GITHUB_ENV
-
-      - name: Download linux artifact
-        uses: actions/download-artifact@v5
-        with:
-          name: linux-release
-
-      - name: Prepare Docker build context
-        run: |
-          mkdir -p dist/linux-docker
-          cp Dockerfile dist/linux-docker/
-          echo "Copying and extracting Linux artifact..."
-          tar -xzf yt-playlist-linux-${{ steps.version.outputs.version }}.tar.gz -C dist/linux-docker/
-          echo "Build context contents:"
-          ls -R dist/linux-docker
-
-      - name: Build Docker image (release)
-        run: docker build dist/linux-docker -t $RELEASE_IMAGE
-
-      - name: Save Docker image as tar (release)
-        run: docker save -o docker-image.tar $RELEASE_IMAGE
-
-      - name: Upload docker-image artifact
-        uses: actions/upload-artifact@v6
-        with:
-          name: docker-image
-          path: docker-image.tar
-
-      - name: Build Docker image (latest)
-        run: docker build dist/linux-docker --label build_as_latest=true -t $LATEST_IMAGE
-
-      - name: Save Docker image as tar (latest)
-        run: docker save -o docker-image-latest.tar $LATEST_IMAGE
-
-      - name: Upload docker-image-latest artifact
-        uses: actions/upload-artifact@v6
-        with:
-          name: docker-image-latest
-          path: docker-image-latest.tar
-
-  release:
-    runs-on: ubuntu-latest
-    needs: [build-windows-package, build-linux-package, build-docker-image]
-    steps:
-      - uses: actions/download-artifact@v5
-        with:
-          name: windows-release
-          path: windows-release
-      - uses: actions/download-artifact@v5
-        with:
-          name: linux-release
-          path: linux-release
-      - uses: actions/download-artifact@v5
-        with:
-          name: docker-image
-          path: docker-image
-      - uses: actions/download-artifact@v5
-        with:
-          name: docker-image-latest
-          path: docker-image-latest
-
-      - name: Get version from tag
-        id: version
-        shell: bash
-        run: |
-          VERSION="${{ inputs.tag }}"
-          VERSION="${VERSION#v}"
-          echo "version=$VERSION" >> $GITHUB_OUTPUT
-      - name: Set docker image names
-        run: |
-          echo "RELEASE_IMAGE=ghcr.io/${GITHUB_ACTOR}/ytpld:${{ steps.version.outputs.version }}" >> $GITHUB_ENV
-          echo "LATEST_IMAGE=ghcr.io/${GITHUB_ACTOR}/ytpld:latest" >> $GITHUB_ENV
-      - name: Login to GitHub Container Registry
-        uses: docker/login-action@v3
-        with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-      - name: Load and push Docker release image
-        run: |
-          docker load -i docker-image/docker-image.tar
-          docker push $RELEASE_IMAGE
-      - name: Load and push Docker latest image
-        run: |
-          docker load -i docker-image-latest/docker-image-latest.tar
-          docker push $LATEST_IMAGE
-
-      - name: Create GitHub Release
-        id: create_release
-        uses: actions/create-release@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          tag_name: ${{ steps.version.outputs.version }}
-          release_name: "Release ${{ steps.version.outputs.version }}"
-          draft: true
-      - name: Upload Windows release asset
-        uses: actions/upload-release-asset@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: windows-release/yt-playlist-windows-${{ steps.version.outputs.version }}.zip
-          asset_name: yt-playlist-windows-${{ steps.version.outputs.version }}.zip
-          asset_content_type: application/zip
-      - name: Upload Linux release asset
-        uses: actions/upload-release-asset@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: linux-release/yt-playlist-linux-${{ steps.version.outputs.version }}.tar.gz
-          asset_name: yt-playlist-linux-${{ steps.version.outputs.version }}.tar.gz
-          asset_content_type: application/gzip
@@ -17,9 +17,9 @@ jobs:
  test:
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
      - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
        with:
          python-version: '3.11'
      - name: Install dependencies
@@ -46,7 +46,7 @@ jobs:
            artifact_name: linux-release

    steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6

      - name: Get version
        id: version
@@ -64,7 +64,6 @@ jobs:
          $VERSION = "${{ steps.version.outputs.version }}"
          $WORKSPACE = "${{ github.workspace }}"
          New-Item -ItemType Directory -Force -Path "$WORKSPACE/dist/windows/bin"
-          Copy-Item "$WORKSPACE/yt-playlist-main.py" "$WORKSPACE/dist/windows/"
          
          # yt-dlp
          Invoke-WebRequest -Uri "https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp.exe" -OutFile "$WORKSPACE/dist/windows/bin/yt-dlp.exe"
@@ -81,8 +80,9 @@ jobs:
          Move-Item "$WORKSPACE/dist/windows/aria2_temp/aria2-1.37.0-win-64bit-build1/aria2c.exe" "$WORKSPACE/dist/windows/bin/aria2c.exe"
          
          # Build .exe using PyInstaller
+          # Use --add-data to include the src folder so internal imports (like 'import cli') work
          pip install pyinstaller
-          pyinstaller --onefile --name "yt-playlist-downloader" --workpath "$WORKSPACE/build" --specpath "$WORKSPACE" --distpath "$WORKSPACE/dist" --add-data "$WORKSPACE/src;ytpld" "$WORKSPACE/yt-playlist-main.py"
+          pyinstaller --onefile --name "yt-playlist-downloader" --workpath "$WORKSPACE/build" --specpath "$WORKSPACE" --distpath "$WORKSPACE/dist" --add-data "$WORKSPACE/src;src" "$WORKSPACE/yt-playlist-main.py"
          Move-Item "$WORKSPACE/dist/yt-playlist-downloader.exe" "$WORKSPACE/dist/windows/yt-playlist-downloader.exe"

          # Cleanup & Archive
@@ -96,6 +96,7 @@ jobs:
          VERSION="${{ steps.version.outputs.version }}"
          mkdir -p "$GITHUB_WORKSPACE/dist/linux/bin"
          cp "$GITHUB_WORKSPACE/yt-playlist-main.py" "$GITHUB_WORKSPACE/dist/linux/"
+          cp -r "$GITHUB_WORKSPACE/src" "$GITHUB_WORKSPACE/dist/linux/"
          
          # yt-dlp
          curl -L https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_linux -o "$GITHUB_WORKSPACE/dist/linux/bin/yt-dlp"
@@ -111,7 +112,7 @@ jobs:
      - name: Cache aria2c binary (Linux)
        if: matrix.platform == 'linux'
        id: aria2-cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
        with:
          path: ${{ github.workspace }}/dist/linux/bin/aria2c
          key: aria2c-linux-1.37.0
@@ -153,7 +154,7 @@ jobs:
          cd "$GITHUB_WORKSPACE/dist/linux" && tar -czf "$GITHUB_WORKSPACE/yt-playlist-linux-$VERSION.tar.gz" *

      - name: Upload Artifact
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
        with:
          name: ${{ matrix.artifact_name }}
          path: |
@@ -164,7 +165,7 @@ jobs:
    needs: build
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
      
      - name: Get version
        id: version
@@ -175,7 +176,7 @@ jobs:
          echo "version=$VERSION" >> $GITHUB_OUTPUT

      - name: Download Linux Artifact
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v8
        with:
          name: linux-release
          path: ${{ github.workspace }}/dist/linux-docker
@@ -183,12 +184,14 @@ jobs:
      - name: Prepare Docker build context
        run: |
          cd "$GITHUB_WORKSPACE/dist/linux-docker"
+          # Extract Linux artifact which now contains bin/, src/, and yt-playlist-main.py
          tar -xzf "$GITHUB_WORKSPACE/dist/linux-docker/yt-playlist-linux-${{ steps.version.outputs.version }}.tar.gz"
+          
+          # Copy Docker-specific files
          cp "$GITHUB_WORKSPACE/Dockerfile" .
          cp "$GITHUB_WORKSPACE/docker-entrypoint.sh" .
          
-          if [ ! -d "src" ]; then cp -r "$GITHUB_WORKSPACE/src" . ; fi
-          # Ensure config directory is present
+          # Ensure config directory is present (not included in Linux zip by default)
          if [ ! -d "config" ]; then cp -r "$GITHUB_WORKSPACE/config" . ; fi
          
          # Debug: List context to verify paths match Dockerfile expectations
@@ -197,8 +200,8 @@ jobs:
      - name: Set docker image names
        run: |
          VERSION="${{ steps.version.outputs.version }}"
-          echo "RELEASE_IMAGE=ghcr.io/${GITHUB_ACTOR}/ytpld:${VERSION}" >> $GITHUB_ENV
-          echo "LATEST_IMAGE=ghcr.io/${GITHUB_ACTOR}/ytpld:latest" >> $GITHUB_ENV
+          echo "RELEASE_IMAGE=ghcr.io/${GITHUB_ACTOR}/ytplst:${VERSION}" >> $GITHUB_ENV
+          echo "LATEST_IMAGE=ghcr.io/${GITHUB_ACTOR}/ytplst:latest" >> $GITHUB_ENV

      - name: Build Docker image
        run: |
@@ -212,7 +215,7 @@ jobs:
        working-directory: ${{ github.workspace }}/dist/linux-docker

      - name: Upload Docker artifacts
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
        with:
          name: docker-images
          path: ${{ github.workspace }}/dist/linux-docker/docker-image*.tar
@@ -223,7 +226,7 @@ jobs:
    if: startsWith(github.event.inputs.tag, 'v')
    steps:
      - name: Download all artifacts
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v8
        with:
          path: ${{ github.workspace }}/artifacts

@@ -236,7 +239,7 @@ jobs:
          echo "version=$VERSION" >> $GITHUB_OUTPUT

      - name: Login to GitHub Container Registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
@@ -245,14 +248,15 @@ jobs:
      - name: Push Docker images
        run: |
          docker load -i "${{ github.workspace }}/artifacts/docker-images/docker-image.tar"
-          docker push ghcr.io/${GITHUB_ACTOR}/ytpld:${{ steps.version.outputs.version }}
+          docker push ghcr.io/${GITHUB_ACTOR}/ytplst:${{ steps.version.outputs.version }}
          docker load -i "${{ github.workspace }}/artifacts/docker-images/docker-image-latest.tar"
-          docker push ghcr.io/${GITHUB_ACTOR}/ytpld:latest
+          docker push ghcr.io/${GITHUB_ACTOR}/ytplst:latest

      - name: Create Release
-        uses: softprops/action-gh-release@v2
+        uses: softprops/action-gh-release@v3
        with:
          tag_name: ${{ github.event.inputs.tag }}
+          draft: true
          files: |
            ${{ github.workspace }}/artifacts/**/*.zip
            ${{ github.workspace }}/artifacts/**/*.tar.gz
@@ -0,0 +1,64 @@
+name: dependency-updates
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 12 * * 1"
+
+permissions:
+  contents: write
+  pull-requests: write
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  update-bundled-binaries:
+    name: Refresh pinned build dependencies
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Discover latest aria2 release
+        id: aria2
+        shell: bash
+        run: |
+          set -euo pipefail
+
+          latest_version="$(
+            git ls-remote --tags --refs https://github.com/aria2/aria2.git 'refs/tags/release-*' \
+              | awk -F/ '{print $NF}' \
+              | sed 's/^release-//' \
+              | sort -V \
+              | tail -n 1
+          )"
+
+          if [ -z "$latest_version" ]; then
+            echo "Unable to determine the latest aria2 release." >&2
+            exit 1
+          fi
+
+          echo "version=$latest_version" >> "$GITHUB_OUTPUT"
+
+      - name: Update release workflow pins
+        shell: bash
+        env:
+          ARIA2_VERSION: ${{ steps.aria2.outputs.version }}
+        run: |
+          set -euo pipefail
+          python3 -c 'from pathlib import Path; import os; path = Path(".github/workflows/build_v2.yml"); text = path.read_text(encoding="utf-8"); version = os.environ["ARIA2_VERSION"]; updated = text.replace("release-1.37.0", f"release-{version}").replace("aria2-1.37.0", f"aria2-{version}").replace("aria2c-linux-1.37.0", f"aria2c-linux-{version}"); path.write_text(updated, encoding="utf-8") if updated != text else None; print(f"Updated aria2 references to {version}." if updated != text else "No aria2 references changed.")'
+
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@v8
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          commit-message: "chore: refresh aria2 build pins"
+          title: "Refresh aria2 build pins"
+          body: |
+            Automated maintenance update for the bundled aria2 release references used by the release workflow.
+          branch: dependency-updates/aria2
+          delete-branch: true
+          labels: dependencies, maintenance
@@ -17,7 +17,7 @@ jobs:

    steps:
      - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6

      - name: Make bundled linux binaries executable (if present)
        run: |
@@ -9,7 +9,7 @@ jobs:
    runs-on: ubuntu-latest

    steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6

      - name: Install Ruff
        run: pip install ruff
@@ -3,18 +3,24 @@ name: Unit tests
 on:
  workflow_dispatch:
  push:
-    branches: [ main, Next ]
+    branches: [ main ]
  pull_request:
-    branches: [ main, Next ]
+    branches: [ main ]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true

 jobs:
  tests:
    name: Run unit tests
    runs-on: ubuntu-latest
+    permissions:
+      contents: read

    steps:
      - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6

      - name: Create venv and install project
        run: |
@@ -7,6 +7,7 @@ config/yt-playlist-config.json
 /*/tmp*
 *.code-workspace
 /bin/*
+/app/data

 # Byte-compiled / optimized / DLL files
 __pycache__/
@@ -1,4 +1,5 @@
 {
+    "python.terminal.activateEnvironment": true,
    "python.testing.pytestArgs": [
        "tests"
    ],
@@ -1,26 +0,0 @@
-### Python-first
-
- Primary GUI framework: `PySide6` (Qt for Python) — native desktop look, cross-platform on Windows and Linux, mature widget set, good documentation.
- Desktop architecture: keep the core downloader logic as a Python package and expose a local HTTP/WebSocket API (e.g., `FastAPI`) that the GUI talks to. The GUI stays a thin client that issues commands and receives status updates.
-
-### Why this approach
-
- Stay in Python end-to-end for now, minimizing new languages or runtimes.
- A local API boundary lets you reuse the same backend for a future Web frontend (React/Next.js or plain SPA) and for Android (native or Flutter shell that talks to the API or a hosted API).
- `PySide6` provides a polished native desktop UX and easier packaging for Windows/Linux compared with Python mobile toolkits.
-
-### Packaging & Distribution (brief)
-
- Bundle the backend and GUI into one distributable. The GUI should spawn the local API process (background subprocess) on startup.
- Windows: use `pyinstaller` or `briefcase` to create an executable/installer. Consider creating an MSI or Inno Setup installer for a polished UX.
- Linux: provide AppImage, Snap, or distribution-specific packages (deb/rpm) — AppImage is a good starting point for single-file distribution.
- Security: bind the local API to `localhost` only, use a short-lived token or IPC for authentication between GUI and backend, and avoid exposing unnecessary ports.
-
-### Roadmap (GUI → Web → Mobile)
-
-1. Desktop prototype: `FastAPI` backend + `PySide6` GUI (thin client) with basic playlist add/update/download controls and status streaming.
-2. Packaging: create Windows exe/installer and Linux AppImage for the prototype.
-3. Web frontend: build a web SPA that consumes the same backend API (hosted or local) — this reuses business logic with minimal change.
-4. Android: either a native app or cross-platform UI (Flutter/React Native) that calls the backend API; alternatively host the backend and make a thin mobile client.
-
-If you want, I can now: scaffold a minimal `FastAPI` backend and `PySide6` desktop starter in this repo, or produce concise packaging steps for Windows and Linux. Which do you prefer? 
@@ -1,232 +0,0 @@
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-How to Apply These Terms to Your New Programs
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-     YouTube-Playlist-Downloader
-     Copyright (C) 2025  dark_zoul
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-     This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
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-Also add information on how to contact you by electronic and paper mail.
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-     YouTube-Playlist-Downloader  Copyright (C) 2025  dark_zoul
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-The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an “about box”.
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-You should also get your employer (if you work as a programmer) or school, if any, to sign a “copyright disclaimer” for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see <https://www.gnu.org/licenses/>.
-
-The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read <https://www.gnu.org/philosophy/why-not-lgpl.html>.
@@ -1,218 +1,83 @@
-# YouTube Playlist Downloader
+# YouTube Playlist Sync

-[![Build Release](https://github.com/darkzoul5/YoutubePlaylistDownloader/actions/workflows/build.yml/badge.svg?branch=main)](https://github.com/darkzoul5/YoutubePlaylistDownloader/actions/workflows/build.yml)
+[![Build Release](https://github.com/darkzoul5/YoutubePlaylistDownloader/actions/workflows/build_v2.yml/badge.svg)](https://github.com/darkzoul5/YoutubePlaylistDownloader/actions/workflows/build_v2.yml)
 [![Unit tests](https://github.com/darkzoul5/YoutubePlaylistDownloader/actions/workflows/unit-tests.yml/badge.svg?branch=main)](https://github.com/darkzoul5/YoutubePlaylistDownloader/actions/workflows/unit-tests.yml)

-A cross-platform tool for downloading entire YouTube playlists as MP3 or MP4 files, using [yt-dlp](https://github.com/yt-dlp/yt-dlp), [ffmpeg](https://ffmpeg.org/), and [aria2c](https://github.com/aria2/aria2). Includes Gitea CI/CD workflow for packaging and releasing Windows and Linux binaries.
+A cross-platform tool for downloading and keeping in sync a local copy of entire YouTube playlists as MP3 or MP4 files, using [yt-dlp](https://github.com/yt-dlp/yt-dlp) & [ffmpeg](https://ffmpeg.org/).

 Supports audio, video, or both download modes, music and videos are numbered as they are on your youtube playlist, playlist cleanup, and configurable parallel download options.
+Local-first YouTube playlist synchronization client.

---
+## What’s Included

-## Features
-
- **Download full YouTube playlists** as high-quality MP3 (audio), MP4 (video), or both.
- **Download mode:** Choose `audio`, `video`, or `both` for each playlist.
- **Max video quality:** Select from `720p`, `1080p`, `1440p`, `2160p`, or `best`.
- **Parallel downloads:** Using aria2 for speed.
- **Automatic renumbering:** Tracks are renumbered to match playlist order after download.
- **Cleanup of tracks:** Option to remove files not in playlist anymore, with confirmation.
- **Configurable output paths** and archive tracking.
- **Cross-platform:** Windows and Linux support.
- **GitHub Actions CI/CD workflow** for automated packaging and release.
-
---
+- Scanner (yt-dlp extract-only), diff engine, filesystem scan
+- Safe reordering via two-pass rename, recycle deletions
+- Async download queue with simple retry (yt-dlp Python API)
+- SQLite metadata; DB updates on rename/download/delete; `last_sync`
+- Optional event publishing for future GUI/logs

 ## Requirements

- Python 3.8+
+- Python 3.10+
+- `yt-dlp` (pip)
+- `ffmpeg` (only needed for audio extraction / "both" mode)

---
+Install:

-## Installation
+```bash
+pip install -U yt-dlp
+```

-### Quick Start
+## Configure

-1. **Download the latest release:**
-
- Go to the [Releases](https://github.com/darkzoul5/YoutubePlaylistDownloader/releases) page.
-  - Download the appropriate archive for your platform (Windows or Linux).
-
-1. **Unzip the archive:**
-
- Extract the contents to a folder of your choice.
-
-1. **Edit configuration:**
-
- Open `yt-playlist-config.json` and adjust paths, playlist URLs, download mode, and quality as needed.
-
-1. **Run the downloader:**
-
- On Windows:
-
-    ```sh
-    python yt-playlist-main.py
-    ```
-
- On Linux:
-
-    ```sh
-    python3 yt-playlist-main.py
-    ```
-
---
-
-## Usage
-
-### Configuration
-
-Edit `yt-playlist-config.json` to specify playlists, paths, and options:
+Create/edit `config/yt-playlist-config.json`:

 ```json
 {
  "playlists": [
    {
-      "url": "https://www.youtube.com/playlist?list=playlistidhere",
-      "download_mode": "audio",         
-      "max_video_quality": "1080p",
-      "save_path": "./music",
-      "archive": "archive.txt",
+      "url": "https://www.youtube.com/playlist?list=YOUR_PLAYLIST_ID",
+      "download_mode": "audio",
+      "save_path": "./downloads"
    }
  ],
-  "yt_dlp_path": "./bin/yt-dlp.exe",      // or "yt-dlp" for Linux
-  "ffmpeg_path": "./bin/ffmpeg.exe",      // or "ffmpeg" for Linux
-  "aria2c_path": "./bin/aria2c.exe",      // or "aria2c" for Linux
-  "max_parallel_downloads": 10,
-  "aria2c_connections": 8
+  "ffmpeg_path": "./ffmpeg"
 }
 ```

- **playlists:** List of playlist objects. Each must have a `url`, `save_path`, and `archive`.
- **yt_dlp_path, ffmpeg_path, aria2c_path:** Paths to binaries (relative or absolute).
- **download_mode:** Choose `audio`, `video`, or `both`.
- **max_video_quality:** Set max video quality for downloads.
- **max_parallel_downloads:** Number of simultaneous downloads.
- **aria2c_connections:** Connections per download.
+`download_mode`:
+- `video`: download playlist videos as muxed `.mp4` (no ffmpeg processing)
+- `audio`: download muxed `.mp4`, extract `.mp3`, delete the `.mp4`
+- `both`: download muxed `.mp4`, extract `.mp3`, keep both files

---
+## Run

-### Running
+- Compute-only:

- Just run the script with Python:
-  - On Windows: `python yt-playlist-main.py`
-  - On Linux: `python3 yt-playlist-main.py`
-
- The downloader will:
-  - Check for required tools and update yt-dlp automatically
-  - Download new tracks or videos from your playlist(s)
-  - Number and name files to match the playlist order
-  - Skip deleted or private videos
-  - Avoid re-downloading files you've already downloaded
-  - Offer to clean up files that are no longer in the playlist
-
---
-
-## CLI flags
-
-When running the script locally (for example `python yt-playlist-main.py`), you can pass the following flags:
-
- `-c, --config <path>` — Path to a configuration file (relative to the repository `config/` directory by default)
- `-d, --debug` — Show verbose subprocess output (yt-dlp, ffmpeg, aria2c)
- `-p, --prune` — Run with pruning (deleting files not present in playlists)
- `-y, --yes, --non-interactive` — Auto-confirm prompts (used only with `--prune`at the moment)
-
-Examples (local):
-
-```powershell
-# Run with debug output
-python yt-playlist-main.py --debug
-
-# Run non-interactive and prune
-python yt-playlist-main.py --prune --yes
-
-# Use a different config file
-python yt-playlist-main.py --config custom-config.json
+```bash
+python -m src.app.cli
 ```

---
+- Apply actions:

-## Docker Usage
-
-You can run YouTube Playlist Downloader using the official Docker image.
-
-### Run the container
-
-```pwsh
-docker run -v /path/to/downloads:/app/downloads -v /path/to/config:/app/config ghcr.io/dark_zoul/ytpld:latest
+```bash
+python -m src.app.cli --apply
 ```

-Replace `/path/to/downloads` and `/path/to/config` with your local directories.
+- Single playlist (0-based index):

-**Required volumes:**
-
- `/app/downloads`: Directory for downloaded audio/videos
- `/app/config`: Directory for the configuration file
-
-### Docker Compose example
-
-Create a `docker-compose.yml` with the following content (replace the host paths as needed):
-
-```yaml
-services:
-  yt-downloader:
-    image: ghcr.io/dark_zoul/ytpld:latest
-    container_name: yt-downloader
-    restart: no
-    volumes:
-      - /path/to/downloads:/app/downloads
-      - /path/to/config:/app/config
+```bash
+python -m src.app.cli --apply --playlist 0
 ```

-Run it with:
+## Data & Layout

-```pwsh
-docker compose up -d
-```
+- Database: `app/data/app.db`
+- Outputs: `<save_path>/audio` and/or `<save_path>/video`
+- Recycle bin: `<save_path>/.recycle/{audio,video}`

-## Docker Compose — environment variables
+## Roadmap (short)

-You can pass environment variables.
-
-Environment variables
-
- `YTPL_DEBUG` (0/1): When set to `1` shows verbose output from external binaries (yt-dlp, ffmpeg, aria2c). Useful for diagnosing failures.
- `YTPL_PRUNE` (0/1): When set to `1` enables pruning — files that are not present in any configured playlist will be deleted (requires confirmation unless `YTPL_YES` is set).
- `YTPL_YES` (0/1): Auto-confirm prompts (use with `YTPL_PRUNE` in automated runs).
- `YTPL_CONFIG`: Path to a config file inside the container (defaults to `/app/config/yt-playlist-config.json` if present).
- `YTPL_CONFIG_JSON`: Full JSON payload for the entire config. When provided it overwrites `/app/config/yt-playlist-config.json`.
- `YTPL_PLAYLISTS_JSON`: JSON array used to populate the `playlists` field in the config.
- `PLAYLIST_{N}_{FIELD}`: Indexed playlist entries. For each playlist index N use `PLAYLIST_N_URL`, `PLAYLIST_N_DOWNLOAD_MODE`, `PLAYLIST_N_SAVE_PATH`, `PLAYLIST_N_ARCHIVE`, etc.
- `YTPL_MAX_PARALLEL_DOWNLOADS`: Integer, maximum concurrent downloads.
- `YTPL_ARIA2C_CONNECTIONS`: Integer, connections per download.
- `YTPL_MAX_VIDEO_QUALITY`: String, e.g., `1080p`, `720p`, `best`.
- `YTPL_DOWNLOAD_MODE`: `audio`, `video`, or `both` — default download mode applied to playlists that don't set it individually.
-
-Tip
-
- Mount a config file for complex setups to avoid long environment variables. Example: `- /host/config/yt-playlist-config.json:/app/config/yt-playlist-config.json`.
-
-## Troubleshooting
-
- **No binaries found:** Ensure paths in `yt-playlist-config.json` are correct and binaries are present.
- **No tracks downloaded:** Check playlist URL and archive file.
- **Download mode or quality issues:** Make sure `download_mode` and `max_video_quality` are set to valid values.
- **Network overload warning:** If you set very high parallel/connections, the script will warn you.
-
---
-
-## License
-
-See [LICENSE](LICENSE).
-
---
-
-## Credits
-
- [yt-dlp](https://github.com/yt-dlp/yt-dlp)
- [ffmpeg](https://ffmpeg.org/)
- [aria2c](https://github.com/aria2/aria2)
+- Scheduler (periodic sync), richer retries/logging
+- GUI (PySide6) wired to EventBus
+- Enhanced config validation
@@ -4,13 +4,8 @@
      "url": "https://www.youtube.com/playlist?list=YOUR_PLAYLIST_ID_HERE",
      "download_mode": "audio",
      "max_video_quality": "1080p",
-      "save_path": "./downloads",
-      "archive": "archive.txt"
+      "save_path": "./downloads"
    }
  ],
-  "yt_dlp_path": "./bin/yt-dlp",
-  "ffmpeg_path": "./bin/ffmpeg",
-  "aria2c_path": "./bin/aria2c",
-  "max_parallel_downloads": 6,
-  "aria2c_connections": 4
+  "ffmpeg_path": "./ffmpeg"
 }
@@ -1,10 +1,10 @@
-FROM python:3.12-alpine
+FROM python:3.13-alpine

 WORKDIR /app

 # Copy application code (package) and bootstrap
 COPY yt-playlist-main.py /app/
-COPY src/ /app/ytpld/
+COPY src/ /app/
 COPY config/ /app/config/

 # Copy helper binaries from the build context (which includes extracted artifacts)
@@ -1,8 +1,8 @@
 version: '3.8'
 services:
-  ytpld:
-    image: git.darkzoul.org/dark_zoul/ytpld:latest
-    container_name: ytpld
+  ytplst:
+    image: git.darkzoul.org/dark_zoul/ytplst:latest
+    container_name: ytplst
    restart: no
    volumes:
      - /path/to/downloads:/app/downloads
@@ -1,6 +1,5 @@
 #!/bin/sh
 # Entry point for the ytplaylist container.
-# Converts environment variables into CLI flags and execs the Python CLI.

 set -e

@@ -0,0 +1,38 @@
+# GUI Plan
+
+## Python-first Desktop Architecture
+
+- **Primary GUI framework**: `PySide6` (Qt for Python).
+- **Communication Layer**: A local `FastAPI` backend to separate core logic from the UI.
+- **IPC Mechanism**: The GUI spawns the FastAPI server on a random high port (binding to `127.0.0.1` ONLY) and communicates via REST/WebSockets.
+
+## Core Features to Implement
+
+1. **Dashboard Overview**: List all tracked playlists, their status (Last Sync), and total size.
+2. **Interactive Configuration**: Wizard-style setup for new playlists (URL detection, folder picker).
+3. **Queue Manager**: Visual progress bars for active downloads, showing speed, ETA, and current video title.
+4. **Log Viewer**: Real-time streaming of yt-dlp logs for troubleshooting.
+5. **Settings Panel**: Global settings for binary paths (ffmpeg, aria2c), max parallel jobs, and Docker detection toggle.
+
+## Phase 1 Roadmap: "The Bridge"
+
+- [ ] **Refactor `src/manager.py`**: Convert CLI-first execution to async-compatible methods for FastAPI consumption.
+- [ ] **FastAPI Integration**: Create endpoints for `/playlists`, `/status`, and `/download/start`.
+- [ ] **PySide6 Skeleton**: Basic window with `QWebEngine` (if hybrid) or native `QWidget` dashboard.
+- [ ] **Packaging**: `pyinstaller` configuration to bundle both backend and frontend into a single `.exe`.
+
+## Packaging & Distribution (brief)
+
+- Bundle the backend and GUI into one distributable. The GUI should spawn the local API process (background subprocess) on startup.
+- Windows: use `pyinstaller` or `briefcase` to create an executable/installer. Consider creating an MSI or Inno Setup installer for a polished UX.
+- Linux: provide AppImage, Snap, or distribution-specific packages (deb/rpm) — AppImage is a good starting point for single-file distribution.
+- Security: bind the local API to `localhost` only, use a short-lived token or IPC for authentication between GUI and backend, and avoid exposing unnecessary ports.
+
+## Roadmap (GUI → Web → Mobile)
+
+1. Desktop prototype: `FastAPI` backend + `PySide6` GUI (thin client) with basic playlist add/update/download controls and status streaming.
+2. Packaging: create Windows exe/installer and Linux AppImage for the prototype.
+3. Web frontend: build a web SPA that consumes the same backend API (hosted or local) — this reuses business logic with minimal change.
+4. Android: either a native app or cross-platform UI (Flutter/React Native) that calls the backend API; alternatively host the backend and make a thin mobile client.
+
+If you want, I can now: scaffold a minimal `FastAPI` backend and `PySide6` desktop starter in this repo, or produce concise packaging steps for Windows and Linux. Which do you prefer?
@@ -0,0 +1,50 @@
+# Project Plan
+
+## Subject Area
+
+- Tool for downloading and synchronizing YouTube playlists.
+- Focuses on batch downloading, format selection (audio and/or video), configurable quality and keeping local copies synced with playlist changes.
+- Targets power users and archivists who need large-scale, repeatable playlist archiving and ongoing synchronization, with GUI interface.
+
+## Problem
+
+- Users and power-users who manage large or frequently changing YouTube playlists lack a dependable, configurable tool that:
+  - correctly detects and downloads new videos while avoiding duplicates,
+  - and can be configured easily via file or GUI for repeatable workflows.
+
+## Users Definition
+
+Individuals who need to download a large number of videos or audio files from a YouTube playlist and keep it updated
+
+## Functionality Definition
+
+- Multi-format Download:
+  - Video only (mp4)
+  - Audio only (mp3)
+  - Both video and audio (mp3 & mp4)
+- Smart Synchronization:
+  - Archive tracking (prevents re-downloading existing media)
+  - Playlist Pruning (automatically deletes local files no longer in the YouTube playlist)
+  - Sequential Renumbering (keeps local files sorted by playlist position)
+- Advanced Configuration:
+  - Per-playlist settings (Quality, paths, archive file)
+  - Global performance options (Parallel downloads, aria2c threading)
+  - Path management for yt-dlp, ffmpeg, and aria2c (Docker-aware)
+- GUI Integration:
+  - Real-time status updates via backend API
+  - Visual configuration editor
+  - Modern, responsive Qt-based interface
+
+## Platforms
+
+- Desktop: Windows (Primary), Linux
+- Docker
+- Possible Future: Web App, Android App (via shared FastAPI backend)
+
+## Architecture & Languages
+
+- Core Engine: Python (yt-dlp wrapper)
+- Backend API: FastAPI (Local localhost-only boundary)
+- Desktop Frontend: PySide6 (Qt for Python)
+- Distribution: PyInstaller / Briefcase (Windows .exe, Linux AppImage)
+  
@@ -0,0 +1,26 @@
+# Project Schedule
+
+| No. | Task description | Estimated time |
+| --- | --- | --- |
+| 1 | Define the project requirements, target users, and core features for playlist downloading and synchronization. | 3 hours |
+| 2 | Design the overall architecture for the Python package, CLI entry point, and configuration structure. | 4 hours |
+| 3 | Implement configuration loading and validation for paths, download modes, quality settings, and external tools. | 5 hours |
+| 4 | Build the playlist fetching logic to read playlist entries and detect new, deleted, or private videos. | 5 hours |
+| 5 | Implement the downloader core for audio, video, and combined download modes using yt-dlp, ffmpeg, and aria2c. | 8 hours |
+| 6 | Add filename sanitization, track renumbering, and output path management to keep downloaded files organized. | 5 hours |
+| 7 | Implement playlist update and cleanup logic so the local library stays synchronized with the online playlist. | 5 hours |
+| 8 | Create CLI flags for debug mode, pruning, auto-confirmation, and custom config file selection. | 4 hours |
+| 9 | Add logging, warnings, and error handling for missing binaries, network issues, and invalid settings. | 4 hours |
+| 10 | Prepare Docker support and environment-variable based configuration for containerized usage. | 4 hours |
+| 11 | Review the implementation, fix bugs, and refine behavior based on test results and runtime issues. | 6 hours |
+| 12 | Choose the GUI framework and define the desktop architecture, create a local backend API. | 4 hours |
+| 13 | Build the initial desktop GUI prototype with controls & basic actions. | 6 hours |
+| 14 | Connect the GUI to backend functionality for adding playlists, starting downloads, and showing progress updates. | 6 hours |
+| 15 | Add GUI settings for download mode, quality, save paths, and external tool configuration. | 5 hours |
+| 16 | Prepare GUI packaging and distribution for Windows and Linux. | 5 hours |
+| 17 | Write automated tests for config loading, downloader behavior, playlist updates, and cleanup edge cases. | 7 hours |
+| 18 | Write user documentation, usage examples, and release instructions for Windows and Linux. | 3 hours |
+
+## Total Time
+
+89 hours
@@ -0,0 +1,781 @@
+# YouTube Playlist Sync — Project Conversion Plan
+
+Repository:
+
+- [darkzoul5/YoutubePlaylistDownloader](https://github.com/darkzoul5/YoutubePlaylistDownloader?utm_source=chatgpt.com)
+
+---
+
+# Project Direction
+
+Convert the project from:
+
+```text
+Single-purpose YouTube playlist downloader
+```
+
+into:
+
+```text
+Persistent YouTube playlist synchronization client
+```
+
+The application becomes state-driven.
+
+---
+
+# Core Product Goals
+
+## Main Features
+
+- Sync playlists locally
+- Download missing items
+- Remove deleted playlist items
+- Keep exact playlist ordering
+- Support audio/video modes
+- Multiple playlists
+- Background auto-sync
+- GUI configuration
+- Queue management
+- Logs/history
+
+---
+
+# Explicit Non-Goals (Current Scope)
+
+Not planned right now:
+
+- Built-in media playback
+- Advanced naming templates
+- Drag-and-drop manual ordering
+- Private playlist sync
+- Channel subscriptions
+- Metadata editing
+
+Design the architecture so these can be added later.
+
+---
+
+# Recommended Stack
+
+## Core Language
+
+- Python 3.12+
+
+Reason:
+
+- Native yt-dlp ecosystem
+- Easier async/background work
+- Better packaging than many expect
+- Simpler iteration speed
+
+---
+
+# GUI
+
+## Recommended
+
+- PySide6
+
+Why:
+
+- Modern Qt ecosystem
+- Better long-term support
+- Cleaner than Tkinter
+- Easier dynamic playlist UI
+- Good threading support
+- Better styling
+
+Avoid:
+
+- Tkinter for this scale
+- Electron/Tauri unless you want a web stack
+
+---
+
+# Downloader Backend
+
+## Recommended
+
+- yt-dlp Python API
+
+Install:
+
+```bash
+pip install yt-dlp
+```
+
+Do NOT:
+
+- scrape YouTube manually
+- parse HTML yourself
+- depend on external unofficial APIs
+
+Use yt-dlp for:
+
+- metadata extraction
+- playlist scanning
+- downloading
+- postprocessing
+
+Use your own app for:
+
+- sync logic
+- ordering
+- deletion
+- scheduling
+- state tracking
+
+---
+
+# Media Processing
+
+## Recommended
+
+- ffmpeg
+
+Needed for:
+
+- audio extraction
+- remuxing
+- conversions
+- thumbnail embedding later
+
+Recommended approach:
+
+- auto-detect ffmpeg
+- optionally bundle with packaged app
+
+---
+
+# Database
+
+## Recommended
+
+- SQLite
+
+Reason:
+
+- Zero setup
+- Local-first architecture
+- Perfect for sync metadata
+- Easy migrations
+- Reliable
+
+SQLite is extremely important for this project.
+
+Do NOT rely only on:
+
+- filenames
+- folders
+- JSON
+
+---
+
+# Background Scheduling
+
+## Recommended
+
+- APScheduler
+
+Use for:
+
+- interval syncs
+- delayed jobs
+- retry jobs
+- startup sync
+
+---
+
+# Async/Concurrency
+
+## Recommended
+
+- asyncio
+
+Use for:
+
+- concurrent playlist syncs
+- GUI-safe task execution
+- download queue
+- cancellation
+- progress updates
+
+---
+
+# Logging
+
+## Recommended
+
+- loguru
+
+or:
+
+- standard logging module
+
+Need:
+
+- rotating logs
+- GUI log panel
+- error history
+- debug support
+
+---
+
+# Packaging
+
+## Recommended
+
+### During development
+
+```text
+venv + pip
+```
+
+### Release builds
+
+Choose one:
+
+| Tool        | Notes                           |
+| ----------- | ------------------------------- |
+| Nuitka      | Best performance and protection |
+| PyInstaller | Easier and common               |
+
+Nuitka is probably best long-term.
+
+---
+
+# Major Architectural Changes
+
+---
+
+# 1. Move to State-Based Sync Architecture
+
+Current downloader logic is likely:
+
+```text
+Playlist URL
+↓
+Download everything
+```
+
+Replace with:
+
+```text
+Remote Playlist State
+↓
+Stored Local State
+↓
+Filesystem State
+↓
+Diff Engine
+↓
+Sync Actions
+```
+
+This is the single most important change.
+
+---
+
+# 2. Introduce Playlist Metadata Database
+
+Create persistent tracking.
+
+Suggested tables:
+
+## playlists
+
+```sql
+CREATE TABLE playlists (
+    id TEXT PRIMARY KEY,
+    name TEXT,
+    url TEXT,
+    path TEXT,
+    mode TEXT,
+    auto_sync INTEGER,
+    sync_interval_minutes INTEGER,
+    last_sync TEXT
+);
+```
+
+## playlist\_items
+
+```sql
+CREATE TABLE playlist_items (
+    playlist_id TEXT,
+    video_id TEXT,
+    title TEXT,
+    playlist_index INTEGER,
+    local_filename TEXT,
+    downloaded INTEGER,
+    last_seen TEXT,
+    PRIMARY KEY (playlist_id, video_id)
+);
+```
+
+---
+
+# 3. Implement Playlist Scanner Layer
+
+Create dedicated metadata extraction.
+
+Suggested structure:
+
+```text
+core/
+ ├── scanner/
+ │    └── playlist_scanner.py
+```
+
+Responsibilities:
+
+- fetch playlist entries
+- extract video IDs
+- detect unavailable videos
+- return normalized playlist state
+
+Use:
+
+```python
+extract_info(download=False)
+```
+
+This allows playlist scanning without downloading.
+
+---
+
+# 4. Create Diff Engine
+
+The app should compare:
+
+```text
+Remote playlist
+vs
+Database state
+vs
+Filesystem state
+```
+
+Output actions:
+
+```text
+DOWNLOAD
+DELETE
+RENAME
+REORDER
+SKIP
+REPAIR
+```
+
+Suggested file:
+
+```text
+core/sync/diff_engine.py
+```
+
+This becomes the heart of the application.
+
+---
+
+# 5. Add Download Queue System
+
+Multi-playlist sync requires a queue.
+
+Suggested states:
+
+```text
+Queued
+Downloading
+Converting
+Completed
+Failed
+Skipped
+Cancelled
+```
+
+Suggested structure:
+
+```text
+core/download/
+ ├── queue_manager.py
+ ├── downloader.py
+ └── workers.py
+```
+
+---
+
+# 6. Implement Stable File Naming
+
+Recommended naming:
+
+```text
+0001 - Title.ext
+```
+
+Benefits:
+
+- native filesystem sorting
+- easy reorder support
+- easy repairs
+- user friendly
+
+Use:
+
+```python
+%(playlist_index)04d - %(title)s.%(ext)s
+```
+
+through yt-dlp.
+
+---
+
+# 7. Implement Safe Reordering
+
+Playlist ordering changes frequently.
+
+Never rename directly.
+
+Use:
+
+```text
+Temporary rename pass
+↓
+Final rename pass
+```
+
+Example:
+
+```text
+0001.mp3 → temp_a
+0002.mp3 → temp_b
+↓
+temp_a → 0002.mp3
+```
+
+Avoid collisions.
+
+---
+
+# 8. Implement Deletion Strategy
+
+Recommended:
+
+Instead of immediate delete:
+
+```text
+playlist/.recycle/
+```
+
+Move removed files there.
+
+Benefits:
+
+- safer
+- recoverable
+- easier debugging
+
+Optional:
+
+- auto-clean after X days
+
+---
+
+# 9. Redesign GUI Around Playlists
+
+Current downloader GUIs are usually task-oriented.
+
+You should move to:
+
+```text
+Playlist-oriented UI
+```
+
+Recommended sections:
+
+```text
+Sidebar
+ ├── Playlists
+ ├── Queue
+ ├── History
+ ├── Logs
+ └── Settings
+```
+
+---
+
+# 10. Support Infinite Playlist Entries
+
+Use dynamic UI generation.
+
+Example:
+
+```python
+class PlaylistConfig:
+    url: str
+    path: str
+    mode: str
+    auto_sync: bool
+```
+
+GUI should render from:
+
+```python
+list[PlaylistConfig]
+```
+
+Do NOT hardcode playlist pages.
+
+---
+
+# 11. Add Background Sync
+
+Start simple.
+
+## Phase 1
+
+- Timer-based sync
+- Tray icon
+- Run minimized
+
+## Phase 2
+
+- Background daemon/service
+- Headless mode
+- Autostart support
+
+---
+
+# 12. Add Progress/Event System
+
+Needed for GUI responsiveness.
+
+Recommended:
+
+```text
+event_bus.py
+```
+
+Events:
+
+```text
+DownloadStarted
+DownloadProgress
+SyncStarted
+SyncFinished
+FileDeleted
+PlaylistUpdated
+```
+
+This decouples GUI from backend.
+
+---
+
+# 13. Introduce Config Management
+
+Recommended:
+
+```text
+config.json
+```
+
+Only for:
+
+- app settings
+- UI preferences
+- non-relational settings
+
+Do NOT store sync state in JSON.
+
+---
+
+# Suggested Folder Structure
+
+```text
+app/
+ ├── core/
+ │    ├── scanner/
+ │    ├── sync/
+ │    ├── download/
+ │    ├── database/
+ │    ├── scheduler/
+ │    └── events/
+ │
+ ├── gui/
+ │    ├── pages/
+ │    ├── widgets/
+ │    ├── dialogs/
+ │    └── models/
+ │
+ ├── config/
+ ├── logs/
+ ├── data/
+ └── main.py
+```
+
+---
+
+# Suggested Sync Flow
+
+```text
+Load playlists
+↓
+Scheduler triggers sync
+↓
+Scanner fetches remote playlist
+↓
+Database state loaded
+↓
+Filesystem scanned
+↓
+Diff engine computes actions
+↓
+Queue downloads
+↓
+Reorder files
+↓
+Move removed files
+↓
+Update database
+↓
+Emit GUI events
+```
+
+---
+
+# Recommended MVP Conversion Order
+
+## Phase 1 — Backend Foundation
+
+Implement:
+
+- SQLite
+- playlist scanner
+- diff engine
+- download wrapper
+- basic sync logic
+
+No GUI redesign yet.
+
+---
+
+# Phase 2 — Stable Syncing
+
+Implement:
+
+- deletion handling
+- reorder handling
+- queue system
+- retry system
+- logs
+
+---
+
+# Phase 3 — GUI Rewrite
+
+Implement:
+
+- playlist manager UI
+- queue page
+- logs page
+- settings page
+- dynamic playlists
+
+---
+
+# Phase 4 — Automation
+
+Implement:
+
+- background sync
+- tray mode
+- startup sync
+- periodic sync
+
+---
+
+# Important Recommendations
+
+## Recommendation 1
+
+Treat:
+
+```text
+video_id
+```
+
+as the canonical identity.
+
+Never titles.
+
+---
+
+# Recommendation 2
+
+Do NOT rely on yt-dlp archive files alone.
+
+Your own DB should be the source of truth.
+
+---
+
+# Recommendation 3
+
+Keep download logic isolated.
+
+yt-dlp should be replaceable internally.
+
+---
+
+# Recommendation 4
+
+Do not overcomplicate the GUI early.
+
+Focus on sync correctness first.
+
+Sync reliability matters more than appearance.
+
+---
+
+# Recommendation 5
+
+Design everything around interruption recovery.
+
+The app should survive:
+
+- crashes
+- partial downloads
+- force closes
+- network failures
+- playlist changes mid-sync
+
+---
+
+# Recommendation 6
+
+Keep the application local-first.
+
+No account system. No cloud backend. No telemetry.
+
+That becomes a strong project identity.
+
+---
+
+# Final Recommended Identity
+
+Instead of:
+
+```text
+YouTube Downloader GUI
+```
+
+Position the project as:
+
+```text
+Local-first YouTube playlist synchronization client.
+```
+
+That identity is:
+
+- clearer
+- more unique
+- technically stronger
+- easier to expand later
@@ -1,55 +0,0 @@
-# Project Plan
-
-## Subject Area
-
- Tool for downloading and synchronizing YouTube playlists.
- Focuses on reliable batch downloading, format selection (audio and/or video), configurable quality and keeping local copies synced with playlist changes.
- Targets power users and archivists who need large-scale, repeatable playlist archiving and ongoing synchronization, with GUI interfaces.
-
-## Problem
-
- Users and power-users who manage large or frequently changing YouTube playlists lack a dependable, configurable tool that:
-  - correctly detects and downloads new videos while avoiding duplicates,
-  - and can be configured easily via file or GUI for repeatable workflows.
-
-## Users Definition
-
-Individuals who need to download a large number of videos or audio files from a YouTube playlist and keep it updated
-
-## Functionality Definition
-
- Can download:
-  - Video only
-  - Audio only
-  - Both video and audio
- Can update the playlist (download only newly added videos)
- Can delete videos that are no longer in the playlist
- Has configuration for:
-  - Quality
-  - Download type (audio, video)
-  - Save directory
-  - Use of aria2c
-  - aria2c-related settings
-  - GUI settings
-
-## GUI
-
- Has buttons for all features
- Allows adjusting all settings from the GUI
- Modern Design
-
-
-## Platform
-
- Desktop application
- Optional:
-  - Web App
-  - Android App
-
-## Languages
-
- Backend
-  - Python
- Frontend
-  - qt ?
-  - Tkinter?
@@ -3,17 +3,36 @@ requires = ["setuptools>=61.0", "wheel"]
 build-backend = "setuptools.build_meta"

 [project]
-name = "yt-playlist-downloader"
-version = "v1.1.4"
-description = "YouTube playlist downloader"
+name = "ytplst"
+version = "1.1.1"
+description = "YouTube playlist Sync Thing"
 readme = "README.md"
 authors = [ { name = "Dark_Zoul" } ]
 license = { file = "LICENSE" }
-keywords = ["youtube", "yt-dlp", "playlist", "downloader"]
+keywords = ["youtube", "yt-dlp", "playlist", "sync"]
+requires-python = ">=3.10"
+dependencies = [
+	"yt-dlp>=2026.3.17",
+]
+[project.optional-dependencies]
+gui = [
+    "PySide6"
+]
+dev = [
+    "pytest",
+    "ruff",
+    "black"
+]

 [project.urls]
-"Home" = "https://git.darkzoul.org/dark_zoul/youtube-playlist-downloader"
+Home = "https://github.com/darkzoul5/YoutubePlaylistSyncThing"
+
+[project.scripts]
+ytplst = "ytplst.main:main"
+
+[tool.setuptools]
+package-dir = {"" = "src"}

 [tool.setuptools.packages.find]
-where = ["."]
-include = ["ytplaylist*"]
+where = ["src"]
+include = ["ytplst*"]
@@ -1,4 +0,0 @@
-"""ytplaylist package exports"""
-from .cli import main
-
-__all__ = ["main"]
@@ -0,0 +1,10 @@
+"""
+App package: backend foundation for playlist sync (no GUI).
+
+This package is the new, state-driven backend. It is intentionally
+minimal at this stage and will be filled out iteratively.
+"""
+
+__all__ = [
+    "core",
+]
@@ -0,0 +1,104 @@
+from __future__ import annotations
+
+import argparse
+import asyncio
+from pathlib import Path
+
+from .config.settings import Settings
+from .core.database.db import Database
+from .core.sync.service import SyncService
+from .core.sync.executor import ActionExecutor
+from .core.events.event_bus import EventBus
+import re
+from .core.utils.yt import extract_playlist_id
+from .core.utils.deps import DependencyError
+
+
+def main(argv: list[str] | None = None) -> int:
+    parser = argparse.ArgumentParser(description="YouTube Playlist Sync — compute/apply actions")
+    parser.add_argument("--apply", action="store_true", help="Apply actions (otherwise compute-only)")
+    parser.add_argument("--db", type=Path, default=Path("app/data/app.db"), help="Path to SQLite database")
+    parser.add_argument("--playlist", type=int, default=None, help="Only run for a specific playlist index (0-based)")
+    parser.add_argument("--verbose", action="store_true", help="Print detailed events (rename/recycle/start)")
+    args = parser.parse_args(argv)
+
+    settings = Settings()
+    db = Database(args.db.resolve())
+    service = SyncService(db)
+    bus = EventBus()
+    executor = ActionExecutor(db, event_bus=bus)
+
+    seen_errors: set[str] = set()
+
+    ansi = re.compile(r"\x1b\[[0-9;]*m")
+
+    async def on_started(payload):
+        if args.verbose:
+            vid = payload.get("video_id")
+            target = payload.get("target")
+            print(f"START: {vid} → {target}")
+
+    async def on_completed(payload):
+        pid = payload.get("playlist_id")
+        vid = payload.get("video_id")
+        target = payload.get("target")
+        print(f"OK: {vid} → {target}")
+
+    async def on_failed(payload):
+        raw = str(payload.get("error", "failed"))
+        msg = ansi.sub("", raw)
+        # Print only once per unique message
+        if msg not in seen_errors:
+            seen_errors.add(msg)
+            # Friendly hint for missing ffmpeg
+            if "ffmpeg not found" in msg.lower():
+                print("ERROR: ffmpeg not found. Install ffmpeg or set 'ffmpeg_path' in config.")
+            else:
+                print(f"ERROR: {msg}")
+
+    # Subscribe to key events
+    bus.subscribe("DownloadStarted", on_started)
+    bus.subscribe("DownloadCompleted", on_completed)
+    bus.subscribe("DownloadFailed", on_failed)
+    if args.verbose:
+        async def on_rename(payload):
+            print(f"RENAME: {payload.get('video_id')} → {payload.get('to')}")
+        async def on_recycle(payload):
+            print(f"RECYCLE: {payload.get('video_id')} ← {payload.get('name')}")
+        bus.subscribe("RenameApplied", on_rename)
+        bus.subscribe("FileRecycled", on_recycle)
+
+    playlists = settings.playlists
+    if args.playlist is not None:
+        playlists = [playlists[args.playlist]] if 0 <= args.playlist < len(playlists) else []
+
+    for pl in playlists:
+        url = pl.get("url")
+        pid = extract_playlist_id(url) or (url or "")
+        try:
+            actions = service.sync_from_config(pl)
+        except ImportError as e:
+            msg = str(e)
+            if "yt_dlp" in msg or "yt-dlp" in msg:
+                print("yt-dlp Python package is required. Install with: pip install -U yt-dlp")
+                return 2
+            raise
+        counts: dict[str, int] = {}
+        for a in actions:
+            counts[a.type.name] = counts.get(a.type.name, 0) + 1
+        summary = ", ".join(f"{k}:{v}" for k, v in sorted(counts.items()))
+        print(f"Playlist {pid}: {len(actions)} actions → {summary}")
+        if args.apply and actions:
+            try:
+                asyncio.run(executor.execute(actions, pl))
+            except DependencyError as e:
+                print(f"ERROR: {e}")
+                return 2
+            db.set_playlist_last_sync(pid)
+            print(f"Applied actions for {pid}.")
+
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())
@@ -0,0 +1 @@
+"""Config loader for the new backend (separate from legacy)."""
@@ -0,0 +1,46 @@
+from __future__ import annotations
+
+import json
+from pathlib import Path
+from typing import Any, Dict, List, Optional
+
+
+DEFAULT_CONFIG: Dict[str, Any] = {
+    "playlists": [],
+    "download_mode": "audio",
+    "max_video_quality": "1080p",
+    "save_path": "./downloads",
+    "ffmpeg_path": "ffmpeg",
+}
+
+
+class Settings:
+    def __init__(self, config_path: Optional[Path] = None) -> None:
+        base_dir = Path("config")
+        base_dir.mkdir(parents=True, exist_ok=True)
+        self.path = (config_path or (base_dir / "yt-playlist-config.json")).resolve()
+        self.data: Dict[str, Any] = dict(DEFAULT_CONFIG)
+        if self.path.exists():
+            try:
+                self.data.update(json.loads(self.path.read_text(encoding="utf-8")))
+            except Exception:
+                # Leave defaults if invalid JSON; validation can be added later.
+                pass
+
+    @property
+    def playlists(self) -> List[Dict[str, Any]]:
+        global_defaults = {
+            "download_mode": self.data.get("download_mode", DEFAULT_CONFIG["download_mode"]),
+            "max_video_quality": self.data.get("max_video_quality", DEFAULT_CONFIG["max_video_quality"]),
+            "save_path": self.data.get("save_path", DEFAULT_CONFIG["save_path"]),
+            "ffmpeg_path": self.data.get("ffmpeg_path", DEFAULT_CONFIG["ffmpeg_path"]),
+        }
+
+        results: List[Dict[str, Any]] = []
+        for pl in list(self.data.get("playlists", [])):
+            if not isinstance(pl, dict):
+                continue
+            merged = dict(global_defaults)
+            merged.update(pl)
+            results.append(merged)
+        return results
@@ -0,0 +1,10 @@
+"""Core backend modules (scanner, sync, download, db, scheduler, events)."""
+
+__all__ = [
+    "scanner",
+    "sync",
+    "download",
+    "database",
+    "scheduler",
+    "events",
+]
@@ -0,0 +1 @@
+"""Database helpers (SQLite)."""
@@ -0,0 +1,101 @@
+from __future__ import annotations
+
+import sqlite3
+from pathlib import Path
+from typing import Iterable
+
+
+SCHEMA = """
+PRAGMA journal_mode=WAL;
+
+CREATE TABLE IF NOT EXISTS playlists (
+    id TEXT PRIMARY KEY,
+    name TEXT,
+    url TEXT,
+    path TEXT,
+    mode TEXT,
+    auto_sync INTEGER,
+    sync_interval_minutes INTEGER,
+    last_sync TEXT
+);
+
+CREATE TABLE IF NOT EXISTS playlist_items (
+    playlist_id TEXT,
+    video_id TEXT,
+    title TEXT,
+    playlist_index INTEGER,
+    local_filename TEXT,
+    downloaded INTEGER,
+    last_seen TEXT,
+    PRIMARY KEY (playlist_id, video_id)
+);
+"""
+
+
+class Database:
+    def __init__(self, db_path: Path) -> None:
+        self.path = db_path
+        self.path.parent.mkdir(parents=True, exist_ok=True)
+        self._conn = sqlite3.connect(self.path)
+        self._conn.row_factory = sqlite3.Row
+        self._migrate()
+
+    def _migrate(self) -> None:
+        with self._conn:
+            self._conn.executescript(SCHEMA)
+
+    def upsert_playlist_items(self, rows: Iterable[tuple]):
+        sql = (
+            "INSERT INTO playlist_items (playlist_id, video_id, title, playlist_index, local_filename, downloaded, last_seen) "
+            "VALUES (?, ?, ?, ?, ?, ?, datetime('now')) "
+            "ON CONFLICT(playlist_id, video_id) DO UPDATE SET "
+            "title=excluded.title, playlist_index=excluded.playlist_index, local_filename=excluded.local_filename, "
+            "downloaded=excluded.downloaded, last_seen=datetime('now')"
+        )
+        with self._conn:
+            self._conn.executemany(sql, rows)
+
+    def get_items_index(self, playlist_id: str) -> dict[str, sqlite3.Row]:
+        cur = self._conn.execute(
+            "SELECT * FROM playlist_items WHERE playlist_id = ?",
+            (playlist_id,),
+        )
+        return {row["video_id"]: row for row in cur.fetchall()}
+
+    def upsert_playlist(self, *, id: str, name: str | None, url: str, path: str, mode: str, auto_sync: int = 0, sync_interval_minutes: int = 0) -> None:
+        sql = (
+            "INSERT INTO playlists (id, name, url, path, mode, auto_sync, sync_interval_minutes, last_sync) "
+            "VALUES (?, ?, ?, ?, ?, ?, ?, NULL) "
+            "ON CONFLICT(id) DO UPDATE SET name=excluded.name, url=excluded.url, path=excluded.path, mode=excluded.mode, "
+            "auto_sync=excluded.auto_sync, sync_interval_minutes=excluded.sync_interval_minutes"
+        )
+        with self._conn:
+            self._conn.execute(sql, (id, name, url, path, mode, auto_sync, sync_interval_minutes))
+
+    def update_local_filename(self, playlist_id: str, video_id: str, local_filename: str | None) -> None:
+        with self._conn:
+            self._conn.execute(
+                "UPDATE playlist_items SET local_filename = ?, last_seen = datetime('now') WHERE playlist_id = ? AND video_id = ?",
+                (local_filename, playlist_id, video_id),
+            )
+
+    def mark_downloaded(self, playlist_id: str, video_id: str, downloaded: bool) -> None:
+        with self._conn:
+            self._conn.execute(
+                "UPDATE playlist_items SET downloaded = ?, last_seen = datetime('now') WHERE playlist_id = ? AND video_id = ?",
+                (1 if downloaded else 0, playlist_id, video_id),
+            )
+
+    def clear_file_state(self, playlist_id: str, video_id: str) -> None:
+        with self._conn:
+            self._conn.execute(
+                "UPDATE playlist_items SET local_filename = NULL, downloaded = 0, last_seen = datetime('now') WHERE playlist_id = ? AND video_id = ?",
+                (playlist_id, video_id),
+            )
+
+    def set_playlist_last_sync(self, playlist_id: str) -> None:
+        with self._conn:
+            self._conn.execute(
+                "UPDATE playlists SET last_sync = datetime('now') WHERE id = ?",
+                (playlist_id,),
+            )
@@ -0,0 +1,102 @@
+from __future__ import annotations
+
+from typing import Optional
+
+from .queue_manager import DownloadJob, JobState
+
+
+class Downloader:
+    """
+    Thin wrapper around yt-dlp usage. For MVP, this is a placeholder
+    where actual download logic will land (audio/video/both).
+    """
+
+    def __init__(self, yt_dlp_path: Optional[str] = None, ffmpeg_path: Optional[str] = None) -> None:
+        self.yt_dlp_path = yt_dlp_path
+        self.ffmpeg_path = ffmpeg_path
+
+    async def handle_job(self, job: DownloadJob):
+        try:
+            job.state = JobState.DOWNLOADING
+            await self._download(job)
+            # Optional local audio extraction when requested
+            if job.mode == "video" and job.audio_output_path is not None:
+                await self._extract_audio(job)
+                # Remove the video if requested (audio-only mode)
+                if not job.keep_video and job.output_path:
+                    try:
+                        job.output_path.unlink(missing_ok=True)
+                    except Exception:
+                        pass
+            job.state = JobState.COMPLETED
+        except Exception as exc:  # pragma: no cover - environment dependent
+            job.state = JobState.FAILED
+            job.error = str(exc)
+
+    async def _download(self, job: DownloadJob):
+        # Use yt-dlp Python API, executed in a worker thread
+        import asyncio
+
+        def run():
+            import yt_dlp  # type: ignore
+
+            class _QuietLogger:
+                def debug(self, msg):
+                    pass
+                def warning(self, msg):
+                    pass
+                def error(self, msg):
+                    # swallow inner repeats; errors are surfaced via exceptions
+                    pass
+                def info(self, msg):
+                    pass
+
+            outtmpl = str(job.output_path)
+
+            # All modes download a single muxed mp4 when possible.
+            # This avoids any ffmpeg-driven merging during the download step, satisfying:
+            #   - video: "original file, no processing"
+            #   - audio/both: extraction is done separately after download
+            ydl_opts = {
+                "format": "best[ext=mp4][acodec!=none][vcodec!=none]/best[ext=mp4]",
+                "outtmpl": outtmpl,
+                "noplaylist": True,
+                "quiet": True,
+                "no_warnings": True,
+                "logger": _QuietLogger(),
+            }
+
+            with yt_dlp.YoutubeDL(ydl_opts) as ydl:  # type: ignore[attr-defined]
+                ydl.download([job.url])
+
+        await asyncio.to_thread(run)
+
+    async def _extract_audio(self, job: DownloadJob):
+        import asyncio
+        from shutil import which
+
+        src = job.output_path
+        dst = job.audio_output_path
+        if not src or not dst:
+            return
+
+        def run():
+            ffmpeg_exe = job.ffmpeg_path or self.ffmpeg_path or which("ffmpeg") or "ffmpeg"
+            import subprocess
+            cmd = [
+                str(ffmpeg_exe),
+                "-y",
+                "-i",
+                str(src),
+                "-vn",
+                "-codec:a",
+                "libmp3lame",
+                "-q:a",
+                "0",
+                str(dst),
+            ]
+            subprocess.run(cmd, check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+
+        # Mark converting state only for local clarity; not published
+        job.state = JobState.CONVERTING
+        await asyncio.to_thread(run)
@@ -0,0 +1,60 @@
+from __future__ import annotations
+
+import asyncio
+from dataclasses import dataclass
+from enum import Enum
+from pathlib import Path
+from typing import Optional
+
+from ..models import PlaylistItem
+
+
+class JobState(str, Enum):
+    QUEUED = "Queued"
+    DOWNLOADING = "Downloading"
+    CONVERTING = "Converting"
+    COMPLETED = "Completed"
+    FAILED = "Failed"
+    SKIPPED = "Skipped"
+    CANCELLED = "Cancelled"
+
+
+@dataclass
+class DownloadJob:
+    item: PlaylistItem
+    output_path: Optional[Path] = None
+    url: Optional[str] = None
+    mode: str = "audio"  # audio|video
+    state: JobState = JobState.QUEUED
+    error: Optional[str] = None
+    ffmpeg_path: Optional[str] = None
+    audio_output_path: Optional[Path] = None  # when mode=video and we also want mp3
+    keep_video: bool = True
+
+
+class QueueManager:
+    def __init__(self, concurrency: int = 2) -> None:
+        self._queue: "asyncio.Queue[DownloadJob]" = asyncio.Queue()
+        self._concurrency = max(1, concurrency)
+        self._workers: list[asyncio.Task[None]] = []
+        self._stopped = asyncio.Event()
+
+    async def start(self, worker_coro):
+        async def runner(idx: int):
+            while not self._stopped.is_set():
+                job = await self._queue.get()
+                try:
+                    await worker_coro(job)
+                finally:
+                    self._queue.task_done()
+
+        self._workers = [asyncio.create_task(runner(i)) for i in range(self._concurrency)]
+
+    async def stop(self):
+        self._stopped.set()
+        for w in self._workers:
+            w.cancel()
+        self._workers.clear()
+
+    async def enqueue(self, job: DownloadJob):
+        await self._queue.put(job)
@@ -0,0 +1,17 @@
+from __future__ import annotations
+
+import asyncio
+from .downloader import Downloader
+from .queue_manager import DownloadJob, JobState
+
+
+async def default_worker(job: DownloadJob, *, max_retries: int = 2, delay_seconds: float = 1.5):
+    dl = Downloader(ffmpeg_path=job.ffmpeg_path)
+    attempt = 0
+    while attempt <= max_retries:
+        await dl.handle_job(job)
+        if job.state == JobState.COMPLETED:
+            return
+        attempt += 1
+        if attempt <= max_retries:
+            await asyncio.sleep(delay_seconds)
@@ -0,0 +1,21 @@
+from __future__ import annotations
+
+from collections import defaultdict
+from typing import Any, Awaitable, Callable, DefaultDict, Dict, List
+
+
+EventHandler = Callable[[Dict[str, Any]], Awaitable[None]]
+
+
+class EventBus:
+    """Simple async pub/sub event bus used by backend and (later) GUI."""
+
+    def __init__(self) -> None:
+        self._subs: DefaultDict[str, List[EventHandler]] = defaultdict(list)
+
+    def subscribe(self, event_name: str, handler: EventHandler) -> None:
+        self._subs[event_name].append(handler)
+
+    async def publish(self, event_name: str, payload: Dict[str, Any]) -> None:
+        for h in list(self._subs.get(event_name, [])):
+            await h(payload)
@@ -0,0 +1,56 @@
+from __future__ import annotations
+
+from dataclasses import dataclass
+from enum import Enum
+from pathlib import Path
+from typing import Optional
+
+
+class DownloadMode(str, Enum):
+    audio = "audio"
+    video = "video"
+    both = "both"
+
+
+@dataclass(frozen=True)
+class Playlist:
+    id: str
+    name: Optional[str]
+    url: str
+    path: Path
+    mode: DownloadMode = DownloadMode.audio
+    auto_sync: bool = False
+    sync_interval_minutes: int = 0
+
+
+@dataclass(frozen=True)
+class PlaylistItem:
+    playlist_id: str
+    video_id: str
+    title: str
+    playlist_index: int
+    local_filename: Optional[str] = None
+    downloaded: bool = False
+
+
+class SyncActionType(str, Enum):
+    DOWNLOAD = "DOWNLOAD"
+    DELETE = "DELETE"
+    RENAME = "RENAME"
+    REORDER = "REORDER"
+    SKIP = "SKIP"
+    REPAIR = "REPAIR"
+
+
+@dataclass(frozen=True)
+class SyncAction:
+    type: SyncActionType
+    item: Optional[PlaylistItem] = None
+    from_name: Optional[str] = None
+    to_name: Optional[str] = None
+
+
+@dataclass(frozen=True)
+class FilesystemEntry:
+    name: str
+    path: Path
@@ -0,0 +1,54 @@
+from __future__ import annotations
+
+from typing import List
+
+from ..models import PlaylistItem
+
+
+class PlaylistScanner:
+    """
+    Fetches remote playlist entries using yt-dlp (no downloads).
+
+    This class intentionally avoids strict dependencies at import time. If
+    yt_dlp is unavailable, call sites should handle the raised ImportError.
+    """
+
+    def __init__(self) -> None:
+        pass
+
+    def scan(self, playlist_url: str, playlist_id: str) -> List[PlaylistItem]:
+        try:
+            import yt_dlp  # type: ignore
+        except Exception as exc:  # pragma: no cover - environment dependent
+            raise ImportError("yt_dlp is required to scan playlists") from exc
+
+        ydl_opts = {
+            "extract_flat": True,
+            "skip_download": True,
+            "quiet": True,
+            "dump_single_json": True,
+        }
+
+        with yt_dlp.YoutubeDL(ydl_opts) as ydl:  # type: ignore[attr-defined]
+            info = ydl.extract_info(playlist_url, download=False)
+
+        entries = info.get("entries", []) if isinstance(info, dict) else []
+        items: List[PlaylistItem] = []
+        for idx, v in enumerate(entries, start=1):
+            if not v:
+                continue
+            title = v.get("title") or "[Unknown]"
+            if title in ("[Deleted video]", "[Private video]"):
+                continue
+            vid = v.get("id") or ""
+            if not vid:
+                continue
+            items.append(
+                PlaylistItem(
+                    playlist_id=playlist_id,
+                    video_id=vid,
+                    title=title,
+                    playlist_index=idx,
+                )
+            )
+        return items
@@ -0,0 +1,20 @@
+from __future__ import annotations
+
+from datetime import timedelta
+from typing import Awaitable, Callable
+
+
+class Scheduler:
+    """
+    Lightweight placeholder for background scheduling. This can later be
+    swapped for APScheduler without changing call sites.
+    """
+
+    def __init__(self) -> None:
+        self._jobs: list[tuple[timedelta, Callable[[], Awaitable[None]]]] = []
+
+    def every(self, interval: timedelta, coro_factory: Callable[[], Awaitable[None]]):
+        self._jobs.append((interval, coro_factory))
+        return self
+
+    # A full implementation will run an event loop and await jobs.
@@ -0,0 +1,62 @@
+from __future__ import annotations
+
+from typing import Iterable, List, Mapping, Sequence
+
+from ..models import FilesystemEntry, PlaylistItem, SyncAction, SyncActionType
+
+
+class DiffEngine:
+    """
+    Compares remote playlist items, database state, and filesystem to
+    produce a list of actions. Initial MVP computes DOWNLOAD/RENAME/REORDER
+    based on simple filename scheme "0001 - Title.ext".
+    """
+
+    def compute_actions(
+        self,
+        remote: Sequence[PlaylistItem],
+        db_index: Mapping[str, PlaylistItem],
+        fs_entries: Iterable[FilesystemEntry],
+        extension: str,
+    ) -> List[SyncAction]:
+        actions: List[SyncAction] = []
+
+        desired_names = {
+            item.video_id: f"{item.playlist_index:04d} - {item.title}{extension}"
+            for item in remote
+        }
+
+        fs_by_name = {e.name: e for e in fs_entries}
+
+        for item in remote:
+            desired_name = desired_names[item.video_id]
+            # If DB knows the current local filename and it already matches and exists -> nothing to do
+            if item.local_filename == desired_name and desired_name in fs_by_name:
+                continue
+
+            # If DB knows a different current filename and it exists -> plan a rename
+            if item.local_filename and item.local_filename in fs_by_name and item.local_filename != desired_name:
+                actions.append(
+                    SyncAction(
+                        SyncActionType.RENAME,
+                        item=item,
+                        from_name=item.local_filename,
+                        to_name=desired_name,
+                    )
+                )
+                continue
+
+            # If the desired file already exists on disk but DB doesn't reflect it -> skip (already correct)
+            if desired_name in fs_by_name:
+                actions.append(SyncAction(SyncActionType.SKIP, item=item, to_name=desired_name))
+                continue
+
+            # Otherwise, we need to download
+            actions.append(SyncAction(SyncActionType.DOWNLOAD, item=item, to_name=desired_name))
+
+        known_ids = {i.video_id for i in remote}
+        for vid, db_item in db_index.items():
+            if vid not in known_ids and db_item.local_filename:
+                actions.append(SyncAction(SyncActionType.DELETE, item=db_item, from_name=db_item.local_filename))
+
+        return actions
@@ -0,0 +1,242 @@
+from __future__ import annotations
+
+import asyncio
+import shutil
+from pathlib import Path
+from typing import Iterable, List
+
+from ..download.queue_manager import DownloadJob, QueueManager
+from ..download.workers import default_worker
+from ..models import SyncAction, SyncActionType
+from ..sync.reorder import safe_multi_rename
+from ..database.db import Database
+from ..utils.yt import extract_playlist_id
+from ..events.event_bus import EventBus
+from ..utils.deps import ensure_ffmpeg_available, ensure_yt_dlp_available
+
+
+class ActionExecutor:
+    def __init__(self, db: Database, concurrency: int = 2, event_bus: EventBus | None = None) -> None:
+        self.concurrency = max(1, concurrency)
+        self.db = db
+        self.bus = event_bus
+
+    async def execute(self, actions: Iterable[SyncAction], playlist_cfg: dict) -> None:
+        self._preflight_dependencies(actions, playlist_cfg)
+
+        save_path = Path(playlist_cfg.get("save_path", "./downloads")).resolve()
+        mode = playlist_cfg.get("download_mode", "audio")
+
+        # Prepare roots
+        audio_root = save_path / "audio"
+        video_root = save_path / "video"
+        audio_root.mkdir(parents=True, exist_ok=True)
+        video_root.mkdir(parents=True, exist_ok=True)
+
+        # First, handle renames safely in batch per extension
+        await self._apply_renames(actions, audio_root, video_root, playlist_cfg)
+
+        # Then, recycle deletions
+        self._apply_deletions(actions, audio_root, video_root, playlist_cfg)
+
+        # Finally, perform downloads concurrently
+        await self._apply_downloads(actions, mode, audio_root, video_root, playlist_cfg)
+
+    def _preflight_dependencies(self, actions: Iterable[SyncAction], playlist_cfg: dict) -> None:
+        """
+        Fail fast on core runtime dependencies before doing any filesystem work.
+
+        This keeps errors consistent regardless of entrypoint (CLI, bootstrap, tests, etc.).
+        """
+        needs_download = any(a.type == SyncActionType.DOWNLOAD for a in actions)
+        if not needs_download:
+            return
+
+        # yt-dlp is required for any download job (Python API usage)
+        ensure_yt_dlp_available()
+
+        # ffmpeg is only required when we will extract audio (audio/both modes)
+        needs_audio = any((a.to_name or "").lower().endswith(".mp3") for a in actions if a.type == SyncActionType.DOWNLOAD)
+        if needs_audio:
+            ffmpeg_hint = playlist_cfg.get("ffmpeg_path", "ffmpeg")
+            ensure_ffmpeg_available(str(ffmpeg_hint) if ffmpeg_hint is not None else None)
+
+    async def _apply_renames(self, actions: Iterable[SyncAction], audio_root: Path, video_root: Path, playlist_cfg: dict) -> None:
+        playlist_id = extract_playlist_id(playlist_cfg.get("url", "")) or playlist_cfg.get("url", "")
+        audio_renames = []
+        video_renames = []
+        applied: List[SyncAction] = []
+        for a in actions:
+            if a.type != SyncActionType.RENAME or not a.from_name or not a.to_name:
+                continue
+            if a.to_name.endswith(".mp3"):
+                audio_renames.append((audio_root / a.from_name, audio_root / a.to_name))
+            elif a.to_name.endswith(".mp4"):
+                video_renames.append((video_root / a.from_name, video_root / a.to_name))
+            applied.append(a)
+
+        if audio_renames:
+            safe_multi_rename(audio_renames)
+        if video_renames:
+            safe_multi_rename(video_renames)
+
+        # Update DB filenames after successful rename attempts
+        for a in applied:
+            if a.item and a.to_name:
+                try:
+                    self.db.update_local_filename(playlist_id, a.item.video_id, a.to_name)
+                except Exception:
+                    pass
+                if self.bus:
+                    await self.bus.publish("RenameApplied", {"playlist_id": playlist_id, "video_id": a.item.video_id, "to": a.to_name})
+
+    def _apply_deletions(self, actions: Iterable[SyncAction], audio_root: Path, video_root: Path, playlist_cfg: dict) -> None:
+        playlist_id = extract_playlist_id(playlist_cfg.get("url", "")) or playlist_cfg.get("url", "")
+        recycle_audio = audio_root.parent / ".recycle" / "audio"
+        recycle_video = video_root.parent / ".recycle" / "video"
+        recycle_audio.mkdir(parents=True, exist_ok=True)
+        recycle_video.mkdir(parents=True, exist_ok=True)
+
+        for a in actions:
+            if a.type != SyncActionType.DELETE or not a.from_name:
+                continue
+            if a.from_name.endswith(".mp3"):
+                src = audio_root / a.from_name
+                dst = recycle_audio / a.from_name
+            else:
+                src = video_root / a.from_name
+                dst = recycle_video / a.from_name
+            if src.exists():
+                try:
+                    if dst.exists():
+                        dst.unlink()
+                    shutil.move(str(src), str(dst))
+                except Exception:
+                    # fallback to delete if move fails
+                    try:
+                        src.unlink()
+                    except Exception:
+                        pass
+            # Update DB to clear file state
+            if a.item:
+                try:
+                    self.db.clear_file_state(playlist_id, a.item.video_id)
+                except Exception:
+                    pass
+                if self.bus:
+                    asyncio.create_task(self.bus.publish("FileRecycled", {"playlist_id": playlist_id, "video_id": a.item.video_id, "name": a.from_name}))
+
+    async def _apply_downloads(self, actions: Iterable[SyncAction], mode: str, audio_root: Path, video_root: Path, playlist_cfg: dict) -> None:
+        playlist_id = extract_playlist_id(playlist_cfg.get("url", "")) or playlist_cfg.get("url", "")
+        queue = QueueManager(concurrency=self.concurrency)
+
+        async def worker(job: DownloadJob):
+            if self.bus and job.item:
+                await self.bus.publish("DownloadStarted", {"playlist_id": playlist_id, "video_id": job.item.video_id, "target": str(job.output_path)})
+            await default_worker(job)
+
+        await queue.start(worker)
+        try:
+            jobs: List[DownloadJob] = []
+
+            # Collapse 'both' into single video download + local audio extraction
+            # Build per-video desired outputs
+            by_vid: dict[str, dict[str, str]] = {}
+            for a in actions:
+                if a.type != SyncActionType.DOWNLOAD or not a.item or not a.to_name:
+                    continue
+                d = by_vid.setdefault(a.item.video_id, {})
+                if a.to_name.endswith(".mp3"):
+                    d["audio"] = a.to_name
+                elif a.to_name.endswith(".mp4"):
+                    d["video"] = a.to_name
+
+            ffmpeg_cfg = str(playlist_cfg.get("ffmpeg_path", "ffmpeg")) if playlist_cfg.get("ffmpeg_path") is not None else None
+            temp_video_root = video_root / ".tmp"
+            temp_video_root.mkdir(parents=True, exist_ok=True)
+
+            for a in actions:
+                if a.type != SyncActionType.DOWNLOAD or not a.item or not a.to_name:
+                    continue
+                vid = a.item.video_id
+                targets = by_vid.get(vid, {})
+
+                # If both audio and video requested for this video id, enqueue only video job with audio_output_path
+                if targets.get("audio") and targets.get("video"):
+                    # only create job once, when encountering the video target
+                    if a.to_name.endswith(".mp4"):
+                        video_path = video_root / targets["video"]
+                        audio_path = audio_root / targets["audio"]
+                        for p in (video_path.parent, audio_path.parent):
+                            p.mkdir(parents=True, exist_ok=True)
+                        url = f"https://www.youtube.com/watch?v={vid}"
+                        job = DownloadJob(
+                            item=a.item,
+                            output_path=video_path,
+                            url=url,
+                            mode="video",
+                            ffmpeg_path=ffmpeg_cfg,
+                            audio_output_path=audio_path,
+                        )
+                        jobs.append(job)
+                        await queue.enqueue(job)
+                    # skip creating a separate audio job
+                    continue
+
+                # Normal single-output path
+                is_audio = a.to_name.endswith(".mp3")
+                url = f"https://www.youtube.com/watch?v={vid}"
+
+                if is_audio:
+                    # Audio-only: download video to temp, extract mp3, then delete video
+                    audio_path = audio_root / a.to_name
+                    audio_path.parent.mkdir(parents=True, exist_ok=True)
+                    # build temp video filename from audio base
+                    temp_base = a.to_name.rsplit(".", 1)[0] + ".mp4"
+                    video_temp = temp_video_root / temp_base
+                    job = DownloadJob(
+                        item=a.item,
+                        output_path=video_temp,
+                        url=url,
+                        mode="video",
+                        ffmpeg_path=ffmpeg_cfg,
+                        audio_output_path=audio_path,
+                        keep_video=False,
+                    )
+                    jobs.append(job)
+                    await queue.enqueue(job)
+                else:
+                    # Video-only
+                    video_path = video_root / a.to_name
+                    video_path.parent.mkdir(parents=True, exist_ok=True)
+                    job = DownloadJob(
+                        item=a.item,
+                        output_path=video_path,
+                        url=url,
+                        mode="video",
+                        ffmpeg_path=ffmpeg_cfg,
+                    )
+                    jobs.append(job)
+                    await queue.enqueue(job)
+        finally:
+            await queue._queue.join()  # wait for all jobs
+            await queue.stop()
+
+        # Persist DB updates for completed jobs
+        for job in locals().get("jobs", []):
+            if job.item and job.output_path:
+                try:
+                    if job.state.name == "COMPLETED":
+                        # Prefer audio filename if produced
+                        final_name = job.audio_output_path.name if job.audio_output_path is not None else job.output_path.name
+                        self.db.update_local_filename(playlist_id, job.item.video_id, final_name)
+                        self.db.mark_downloaded(playlist_id, job.item.video_id, True)
+                        if self.bus:
+                            await self.bus.publish("DownloadCompleted", {"playlist_id": playlist_id, "video_id": job.item.video_id, "target": str(job.audio_output_path or job.output_path)})
+                    else:
+                        # Ensure not marked as downloaded if failed
+                        self.db.mark_downloaded(playlist_id, job.item.video_id, False)
+                        if self.bus:
+                            await self.bus.publish("DownloadFailed", {"playlist_id": playlist_id, "video_id": job.item.video_id, "error": job.error or "unknown"})
+                except Exception:
+                    pass
@@ -0,0 +1,17 @@
+from __future__ import annotations
+
+from pathlib import Path
+from typing import Iterable, List, Sequence
+
+from ..models import FilesystemEntry
+
+
+def list_files(root: Path, extensions: Sequence[str]) -> List[FilesystemEntry]:
+    exts = {e.lower() for e in extensions}
+    results: List[FilesystemEntry] = []
+    if not root.exists():
+        return results
+    for p in root.glob("**/*"):
+        if p.is_file() and p.suffix.lower() in exts:
+            results.append(FilesystemEntry(name=p.name, path=p))
+    return results
@@ -0,0 +1,43 @@
+from __future__ import annotations
+
+from pathlib import Path
+from typing import Dict, Iterable, Tuple
+
+
+def safe_multi_rename(renames: Iterable[Tuple[Path, Path]]) -> None:
+    """
+    Apply multiple renames safely using a two-pass strategy to avoid
+    name collisions. Each item is a tuple (src_path, dst_path).
+    """
+    temp_suffix = ".renametemp"
+    planned = list(renames)
+    existing_dests = {dst for _, dst in planned}
+
+    # Pass 1: move all sources that would collide to temporary names
+    temps: Dict[Path, Path] = {}
+    for src, dst in planned:
+        if not src.exists():
+            continue
+        if src.name == dst.name:
+            continue
+        # If destination exists or another source will become destination, use temp
+        if dst.exists() or dst in existing_dests:
+            tmp = src.with_suffix(src.suffix + temp_suffix)
+            # Ensure unique temp
+            i = 0
+            while tmp.exists():
+                i += 1
+                tmp = src.with_name(src.name + f".{i}" + temp_suffix)
+            src.rename(tmp)
+            temps[tmp] = dst
+        else:
+            # direct rename safe
+            src.rename(dst)
+
+    # Pass 2: move all temp files to their final destinations
+    for tmp, dst in temps.items():
+        if not tmp.exists():
+            continue
+        if dst.exists():
+            dst.unlink()
+        tmp.rename(dst)
@@ -0,0 +1,137 @@
+from __future__ import annotations
+
+from dataclasses import asdict
+from pathlib import Path
+from typing import List
+
+from ..database.db import Database
+from ..models import PlaylistItem, SyncAction
+from ..scanner.playlist_scanner import PlaylistScanner
+from ..sync.diff_engine import DiffEngine
+from ..sync.filesystem import list_files
+from ..utils.naming import make_filename, sanitize_title
+from ..utils.yt import extract_playlist_id
+
+
+class SyncService:
+    def __init__(self, db: Database) -> None:
+        self.db = db
+        self.scanner = PlaylistScanner()
+        self.diff = DiffEngine()
+
+    def _mode_to_extensions(self, mode: str) -> list[str]:
+        if mode == "audio":
+            return [".mp3"]
+        if mode == "video":
+            return [".mp4"]
+        if mode == "both":
+            return [".mp3", ".mp4"]
+        return [".mp3"]
+
+    def sync_from_config(self, playlist_cfg: dict) -> List[SyncAction]:
+        url: str = playlist_cfg.get("url")
+        mode: str = playlist_cfg.get("download_mode", "audio")
+        save_path = Path(playlist_cfg.get("save_path", "./downloads")).resolve()
+        save_path.mkdir(parents=True, exist_ok=True)
+
+        playlist_id = extract_playlist_id(url) or url
+        # Ensure playlist row exists/updated
+        self.db.upsert_playlist(
+            id=playlist_id,
+            name=playlist_cfg.get("name"),
+            url=url,
+            path=str(save_path),
+            mode=mode,
+            auto_sync=int(bool(playlist_cfg.get("auto_sync", False))),
+            sync_interval_minutes=int(playlist_cfg.get("sync_interval_minutes", 0) or 0),
+        )
+        items = self.scanner.scan(url, playlist_id)
+
+        sanitized: List[PlaylistItem] = []
+        for it in items:
+            safe_title = sanitize_title(it.title, it.video_id)
+            sanitized.append(
+                PlaylistItem(
+                    playlist_id=it.playlist_id,
+                    video_id=it.video_id,
+                    title=safe_title,
+                    playlist_index=it.playlist_index,
+                    local_filename=None,
+                    downloaded=False,
+                )
+            )
+
+        rows = [
+            (
+                it.playlist_id,
+                it.video_id,
+                it.title,
+                it.playlist_index,
+                None,
+                0,
+            )
+            for it in sanitized
+        ]
+        self.db.upsert_playlist_items(rows)
+
+        db_index_rows = self.db.get_items_index(playlist_id)
+        db_index: dict[str, PlaylistItem] = {}
+        for vid, row in db_index_rows.items():
+            db_index[vid] = PlaylistItem(
+                playlist_id=row["playlist_id"],
+                video_id=row["video_id"],
+                title=row["title"],
+                playlist_index=row["playlist_index"],
+                local_filename=row["local_filename"],
+                downloaded=bool(row["downloaded"]),
+            )
+
+        # Augment remote items with DB-known filenames/download flags
+        augmented: List[PlaylistItem] = []
+        for it in sanitized:
+            known = db_index.get(it.video_id)
+            if known is None:
+                augmented.append(it)
+            else:
+                augmented.append(
+                    PlaylistItem(
+                        playlist_id=it.playlist_id,
+                        video_id=it.video_id,
+                        title=it.title,
+                        playlist_index=it.playlist_index,
+                        local_filename=known.local_filename,
+                        downloaded=known.downloaded,
+                    )
+                )
+
+        exts = self._mode_to_extensions(mode)
+        merged_actions: List[SyncAction] = []
+
+        # Compute per-extension actions against respective roots
+        for ext in exts:
+            if ext == ".mp3":
+                fs = list_files(save_path / "audio", [".mp3"])
+            elif ext == ".mp4":
+                fs = list_files(save_path / "video", [".mp4"])
+            else:
+                fs = list_files(save_path, [ext])
+            actions = self.diff.compute_actions(augmented, db_index, fs, ext)
+            merged_actions.extend(actions)
+
+        return merged_actions
+        for ext in exts:
+            mode_dir = "audio" if ext == ".mp3" else "video"
+            fs_root = (save_path / mode_dir)
+            fs_entries = list_files(fs_root, [ext])
+            actions = self.diff.compute_actions(sanitized, db_index, fs_entries, ext)
+            merged_actions.extend(actions)
+
+        return [
+            {
+                "type": a.type,
+                "video_id": a.item.video_id if a.item else None,
+                "from_name": a.from_name,
+                "to_name": a.to_name,
+            }
+            for a in merged_actions
+        ]
@@ -0,0 +1 @@
+"""Utility helpers for naming, parsing, etc."""
@@ -0,0 +1,93 @@
+from __future__ import annotations
+
+import os
+import subprocess
+import sys
+from dataclasses import dataclass
+from pathlib import Path
+from shutil import which
+from typing import Optional, Tuple
+
+
+class DependencyError(RuntimeError):
+    pass
+
+
+@dataclass(frozen=True)
+class DependencyStatus:
+    yt_dlp_ok: bool
+    yt_dlp_version: Optional[str]
+    ffmpeg_ok: bool
+    ffmpeg_path: Optional[str]
+    ffprobe_ok: bool
+    ffprobe_path: Optional[str]
+
+
+def get_yt_dlp_version() -> Optional[str]:
+    try:
+        import yt_dlp  # type: ignore
+
+        # yt-dlp exposes version in different places depending on install
+        return getattr(yt_dlp, "__version__", None) or getattr(getattr(yt_dlp, "version", None), "__version__", None)
+    except Exception:
+        return None
+
+
+def ensure_yt_dlp_available() -> str:
+    """
+    Ensures yt-dlp Python package is importable. Returns version string when known.
+    """
+    try:
+        import yt_dlp  # noqa: F401  # type: ignore
+    except Exception as exc:
+        raise DependencyError("yt-dlp Python package is required. Install with: pip install -U yt-dlp") from exc
+    return get_yt_dlp_version() or "unknown"
+
+
+def _resolve_tool_paths(tool_hint: Optional[str], exe_name: str) -> Tuple[Optional[str], Optional[str]]:
+    """
+    Returns (resolved_exe_path, resolved_dir_hint).
+    - If tool_hint is a file path, use it.
+    - If tool_hint is a directory, append exe_name.
+    - Otherwise, treat tool_hint as a command and fall back to PATH resolution.
+    """
+    if tool_hint:
+        hint_str = str(tool_hint).strip().strip('"').strip("'")
+        hint = Path(hint_str)
+        # Expand envvars (%FFMPEG%) etc.
+        expanded = Path(os.path.expandvars(str(hint)))
+        if expanded.is_dir():
+            cand = expanded / exe_name
+            if cand.exists():
+                return str(cand), str(expanded)
+        if expanded.exists():
+            return str(expanded), str(expanded.parent)
+
+    # PATH lookup
+    found = which(exe_name)
+    if found:
+        return found, str(Path(found).parent)
+    return None, None
+
+
+def ensure_ffmpeg_available(ffmpeg_hint: Optional[str]) -> Tuple[str, str]:
+    """
+    Ensures ffmpeg is runnable. Returns (ffmpeg_path, ffmpeg_path).
+
+    Note: ffprobe is intentionally not required. This project uses ffmpeg directly for
+    audio extraction, and yt-dlp can still function for muxed downloads without ffprobe.
+    """
+    ffmpeg_exe = "ffmpeg.exe" if sys.platform.startswith("win") else "ffmpeg"
+
+    ffmpeg_path, ffmpeg_dir = _resolve_tool_paths(ffmpeg_hint, ffmpeg_exe)
+    if not ffmpeg_path:
+        raise DependencyError("ffmpeg not found. Install ffmpeg or set 'ffmpeg_path' in config.")
+
+    # Smoke test (fast)
+    try:
+        subprocess.run([ffmpeg_path, "-version"], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+    except Exception as exc:
+        raise DependencyError("ffmpeg exists but is not runnable. Check permissions/architecture/path.") from exc
+
+    # Keep return shape stable for existing callers
+    return ffmpeg_path, ffmpeg_path
@@ -0,0 +1,16 @@
+from __future__ import annotations
+
+from dataclasses import dataclass
+
+
+ILLEGAL_CHARS = '<>:"/\\|?*'
+
+
+def sanitize_title(title: str, fallback: str) -> str:
+    table = str.maketrans({c: "-" for c in ILLEGAL_CHARS})
+    safe = (title or "").translate(table).strip()
+    return safe if safe else fallback
+
+
+def make_filename(index: int, title: str, ext: str, width: int = 4) -> str:
+    return f"{index:0{width}d} - {title}{ext}"
@@ -0,0 +1,14 @@
+from __future__ import annotations
+
+from urllib.parse import parse_qs, urlparse
+
+
+def extract_playlist_id(url: str) -> str | None:
+    try:
+        parsed = urlparse(url)
+        qs = parse_qs(parsed.query)
+        if "list" in qs and qs.get("list"):
+            return qs.get("list", [None])[0]
+        return None
+    except Exception:
+        return None
@@ -0,0 +1,57 @@
+from __future__ import annotations
+
+"""
+Entry point for the new backend (no GUI). For now, this only verifies
+that configuration and database setup work. Future iterations will wire
+up scanner, diff engine, queue, and scheduler.
+"""
+
+from pathlib import Path
+
+from .config.settings import Settings
+from .core.database.db import Database
+from .core.sync.service import SyncService
+from .core.sync.executor import ActionExecutor
+from .core.models import SyncActionType
+from .core.utils.yt import extract_playlist_id
+from .core.utils.deps import DependencyError
+
+
+def bootstrap(db_path: Path | None = None) -> None:
+    settings = Settings()
+    db = Database((db_path or Path("app/data/app.db")).resolve())
+    service = SyncService(db)
+    executor = ActionExecutor(db)
+
+    # Iterate configured playlists and compute actions (no execution yet)
+    for pl in settings.playlists:
+        try:
+            actions = service.sync_from_config(pl)
+            # Apply actions now
+            if actions:
+                print(f"Applying {len(actions)} actions for: {pl.get('url')}")
+                # Summarize before applying
+                counts = {}
+                for a in actions:
+                    counts[a.type] = counts.get(a.type, 0) + 1
+                summary = ", ".join(f"{k.name}:{v}" for k, v in counts.items())
+                print(f"Plan → {summary}")
+                # Execute
+                import asyncio
+                try:
+                    asyncio.run(executor.execute(actions, pl))
+                except DependencyError as e:
+                    print(f"ERROR: {e}")
+                    continue
+                # Post summary (no DB readback yet)
+                pid = extract_playlist_id(pl.get('url', '')) or pl.get('url', '')
+                db.set_playlist_last_sync(pid)
+                print("Applied actions.")
+            else:
+                print(f"No actions needed for: {pl.get('url')}")
+        except Exception as exc:  # keep bootstrap resilient during early dev
+            print(f"Failed to sync playlist {pl.get('url')}: {exc}")
+
+
+if __name__ == "__main__":
+    bootstrap()
@@ -1,46 +0,0 @@
-import argparse
-import logging
-import subprocess
-from .config import ConfigLoader, is_docker
-from .manager import PlaylistManager
-
-
-def configure_logging(debug: bool):
-    level = logging.DEBUG if debug else logging.INFO
-    fmt = "%(asctime)s %(levelname)s: %(message)s" if debug else "%(levelname)s: %(message)s"
-    logging.basicConfig(level=level, format=fmt)
-
-
-def update_yt_dlp(yt_dlp_path: str, debug: bool = False):
-    logger = logging.getLogger(__name__)
-    try:
-        if debug:
-            subprocess.run([yt_dlp_path, "-U"], check=True)
-        else:
-            subprocess.run([yt_dlp_path, "-U"], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.PIPE, text=True)
-        logger.info("yt-dlp is up to date.")
-    except subprocess.CalledProcessError:
-        logger.warning("Could not update yt-dlp: Internet unavailable or cannot reach update server")
-
-
-def main():
-    parser = argparse.ArgumentParser(prog="yt-playlist")
-    parser.add_argument("-c", "--config", default="yt-playlist-config.json", help="Path to config file")
-    parser.add_argument("-d", "--debug", action="store_true", help="Enable debug logging and show binary output")
-    parser.add_argument("-p", "--prune", dest="prune", action="store_true", help="Enable pruning: delete files not present in the playlist")
-    parser.add_argument("-y", "--yes", "--non-interactive", dest="yes", action="store_true", help="Run non-interactively (auto-confirm prompts, used with --prune)")
-    args = parser.parse_args()
-
-    configure_logging(args.debug)
-    logger = logging.getLogger(__name__)
-
-    cfg = ConfigLoader(args.config)
-    if not is_docker():
-        update_yt_dlp(cfg.yt_dlp_path, debug=args.debug)
-
-    manager = PlaylistManager(cfg, debug=args.debug)
-    # support non-interactive mode for CI
-    setattr(cfg, "non_interactive", bool(args.yes))
-    setattr(cfg, "prune", bool(args.prune))
-    logger.debug("Starting PlaylistManager with debug=%s", args.debug)
-    manager.run()
@@ -1,117 +0,0 @@
-import os
-import sys
-import json
-import shutil
-import platform
-from pathlib import Path
-
-
-def is_docker():
-    return os.path.exists("/.dockerenv") or os.getenv("RUNNING_IN_DOCKER") == "true"
-
-
-class ConfigLoader:
-    DEFAULT_CONFIG = {
-        "playlists": [
-            {
-                "url": "https://www.youtube.com/playlist?list=YOUR_PLAYLIST_ID_HERE",
-                "download_mode": "audio",
-                "max_video_quality": "1080p",
-                "save_path": "./downloads",
-                "archive": "archive.txt",
-            }
-        ],
-        "yt_dlp_path": "yt-dlp" if is_docker() else ("./bin/yt-dlp.exe" if platform.system() == "Windows" else "./bin/yt-dlp"),
-        "ffmpeg_path": "ffmpeg" if is_docker() else ("./bin/ffmpeg.exe" if platform.system() == "Windows" else "./bin/ffmpeg"),
-        "aria2c_path": "aria2c" if is_docker() else ("./bin/aria2c.exe" if platform.system() == "Windows" else "./bin/aria2c"),
-        "max_parallel_downloads": 10,
-        "aria2c_connections": 8,
-    }
-
-    def __init__(self, config_path=None):
-        config_dir = Path("./config")
-        config_dir.mkdir(parents=True, exist_ok=True)
-        if config_path is None:
-            config_path = config_dir / "yt-playlist-config.json"
-        else:
-            config_path = Path(config_path)
-            if not config_path.is_absolute():
-                config_path = config_dir / config_path
-        self.config_path = Path(config_path).resolve()
-        if not self.config_path.exists():
-            self._create_default_config()
-            print(
-                f"ℹ Default config created at '{self.config_path}'. Please edit it and rerun."
-            )
-            sys.exit(0)
-
-        with self.config_path.open("r", encoding="utf-8") as f:
-            self.data = json.load(f)
-
-        # Validate binaries
-        self._check_binary(self.yt_dlp_path, "yt-dlp")
-        self._check_binary(self.aria2c_path, "aria2c")
-        # Only require ffmpeg if download_mode is audio or both
-        if self.download_mode in ("audio", "both"):
-            self._check_binary(self.ffmpeg_path, "ffmpeg")
-
-    def _create_default_config(self):
-        with self.config_path.open("w", encoding="utf-8") as f:
-            json.dump(self.DEFAULT_CONFIG, f, indent=2)
-
-    def _check_binary(self, path_str, name):
-        if os.sep not in path_str and "/" not in path_str:
-            if shutil.which(path_str):
-                return
-            print(
-                f"⚠[ERROR] {name} not found in system PATH.\n"
-                f"  Configured path: '{path_str}'\n"
-                f"Please install or correct the path in yt-playlist-config.json ."
-            )
-            sys.exit(1)
-        else:
-            path = Path(path_str)
-            if not path.is_absolute():
-                script_dir = Path(__file__).resolve().parent.parent
-                path = (script_dir / path).resolve()
-            if path.is_file() or shutil.which(str(path)):
-                return
-            print(
-                f"⚠[ERROR] {name} not found.\n"
-                f"  Configured path: '{path_str}'\n"
-                f"  Resolved absolute path: '{path}'\n"
-                f"Please correct the yt-playlist-config.json path."
-            )
-            sys.exit(1)
-
-    @property
-    def playlists(self):
-        return self.data.get("playlists", [])
-
-    @property
-    def yt_dlp_path(self):
-        return self.data["yt_dlp_path"]
-
-    @property
-    def ffmpeg_path(self):
-        return self.data["ffmpeg_path"]
-
-    @property
-    def aria2c_path(self):
-        return self.data["aria2c_path"]
-
-    @property
-    def download_mode(self):
-        return self.data.get("download_mode", "audio")
-
-    @property
-    def max_video_quality(self):
-        return self.data.get("max_video_quality", "1080p")
-
-    @property
-    def max_parallel_downloads(self):
-        return self.data.get("max_parallel_downloads", 10)
-
-    @property
-    def aria2c_connections(self):
-        return self.data.get("aria2c_connections", 8)
@@ -1,390 +0,0 @@
-import json
-import shutil
-import subprocess
-import logging
-from pathlib import Path
-from urllib.parse import urlparse, parse_qs
-from concurrent.futures import ThreadPoolExecutor, as_completed
-
-
-class PlaylistDownloader:
-    illegal_chars = '<>:"/\\|?*'
-
-    def __init__(self, config, playlist: dict, index: int):
-        self.logger = logging.getLogger(__name__)
-        # allow caller to pass debug via playlist dict key or config extension later; default False
-        self.debug = bool(playlist.get("debug", False))
-
-        # If the manager (or config) defines debug, prefer that
-        if hasattr(config, "debug"):
-            self.debug = bool(config.debug)
-        # non-interactive mode for CI/automated runs
-        self.non_interactive = bool(getattr(config, "non_interactive", False))
-        # prune controls whether cleanup actually deletes files; default False
-        self.prune = bool(getattr(config, "prune", False))
-
-        self.url = playlist.get("url")
-        self.skip = False
-        if not self.url:
-            self.logger.error("Playlist #%d has invalid or empty URL: '%s' skipping", index + 1, self.url)
-            self.skip = True
-        else:
-            parsed = urlparse(self.url)
-            qs = parse_qs(parsed.query)
-            if "list" in qs and qs.get("list"):
-                self.skip = False
-            else:
-                if (
-                    "v" in qs
-                    or parsed.netloc.endswith("youtu.be")
-                    or parsed.path.startswith("/watch")
-                ):
-                    self.logger.warning("URL for playlist #%d looks like a video URL, not a playlist: '%s' — skipping", index + 1, self.url)
-                    self.skip = True
-                else:
-                    self.logger.warning("URL for playlist #%d does not contain a playlist id: '%s'. Attempting to fetch, but it may fail.", index + 1, self.url)
-                    self.skip = False
-
-        self.download_mode = playlist.get("download_mode", config.download_mode)
-        self.max_video_quality = playlist.get("max_video_quality", config.max_video_quality)
-
-        self.save_path = Path(playlist.get("save_path", "./music"))
-        self.save_path.mkdir(parents=True, exist_ok=True)
-
-        self.archive = Path(playlist.get("archive", "archive.txt"))
-        if not self.archive.is_absolute():
-            self.archive = self.save_path / self.archive
-        self.archive.touch(exist_ok=True)
-
-        self.yt_dlp = config.yt_dlp_path
-        self.ffmpeg = config.ffmpeg_path
-        self.aria2c = config.aria2c_path
-        self.max_parallel = config.max_parallel_downloads
-        self.aria2c_connections = config.aria2c_connections
-
-    def _run(self, args, label=None):
-        """Run subprocess respecting debug mode. In non-debug mode, suppress stdout and capture stderr for logging."""
-        if self.debug:
-            # allow full binary output to the console
-            return subprocess.run(args, check=True)
-        # non-debug: hide stdout and capture stderr for better logging
-        return subprocess.run(args, check=True, stdout=subprocess.DEVNULL, stderr=subprocess.PIPE, text=True)
-
-    def sanitize_title(self, title, fallback_id):
-        safe_title = title.translate(str.maketrans({c: "-" for c in self.illegal_chars})).strip()
-        return safe_title if safe_title else fallback_id
-
-    def get_file_path(self, track_index, title):
-        return self.save_path / f"{track_index:03d} - {title}.mp3"
-
-    def fetch_videos(self):
-        if getattr(self, "skip", False) or not self.url:
-            return []
-
-        try:
-            result = subprocess.run([self.yt_dlp, "-J", "--flat-playlist", self.url], capture_output=True, text=True, check=True)
-            data = json.loads(result.stdout)
-            entries = data.get("entries", [])
-        except subprocess.CalledProcessError as e:
-            stderr = (e.stderr or "").lower()
-            if any(k in stderr for k in ("private", "sign in", "login required", "403", "authorization failed")):
-                self.logger.warning("Playlist appears to be private or requires authentication: '%s'. Skipping.", self.url)
-                self.skip = True
-                return []
-            self.logger.error("Failed to fetch playlist '%s': %s", self.url, (e.stderr.strip() if e.stderr else str(e)))
-            self.skip = True
-            return []
-        except json.JSONDecodeError:
-            self.logger.error("Failed to parse yt-dlp output for URL: '%s'. Skipping.", self.url)
-            self.skip = True
-            return []
-
-        valid = []
-        for v in entries:
-            if not v:
-                continue
-            title = v.get("title", "")
-            if title in ("[Deleted video]", "[Private video]"):
-                self.logger.info("[SKIP] %s - %s", v.get("id"), title)
-                continue
-            valid.append(v)
-        return valid
-
-    def get_archive_ids(self):
-        ids = set()
-        with self.archive.open("r", encoding="utf-8") as f:
-            for line in f:
-                parts = line.strip().split()
-                if len(parts) >= 2:
-                    ids.add(parts[1])
-        return ids
-
-    def download_video(self, video, track_index):
-        title = video.get("title", "[Unknown]")
-        safe_title = self.sanitize_title(title, video["id"])
-        video_url = f"https://www.youtube.com/watch?v={video['id']}"
-
-        def build_video_format(max_quality):
-            mapping = {
-                "720p": "bestvideo[height<=720]+bestaudio/best[height<=720]",
-                "1080p": "bestvideo[height<=1080]+bestaudio/best[height<=1080]",
-                "1440p": "bestvideo[height<=1440]+bestaudio/best[height<=1440]",
-                "2160p": "bestvideo[height<=2160]+bestaudio/best[height<=2160]",
-                "best": "bestvideo+bestaudio/best",
-            }
-            return mapping.get(max_quality.lower(), mapping["1080p"])
-
-        cmds = []
-
-        if self.download_mode == "audio":
-            output_path = self.save_path / "audio" / f"{track_index:03d} - {safe_title}.mp3"
-            output_path.parent.mkdir(parents=True, exist_ok=True)
-            args = [
-                str(self.yt_dlp),
-                "-f",
-                "bestaudio",
-                "--extract-audio",
-                "--audio-format",
-                "mp3",
-                "--audio-quality",
-                "0",
-            ]
-            if not shutil.which(str(self.ffmpeg)):
-                args += ["--ffmpeg-location", str(self.ffmpeg)]
-            args += [
-                "--download-archive",
-                str(self.archive),
-                "-o",
-                str(output_path),
-                "--external-downloader",
-                str(self.aria2c),
-                "--external-downloader-args",
-                f"aria2c:-x {self.aria2c_connections} -s {self.aria2c_connections}",
-                video_url,
-            ]
-            cmds.append((args, f"{track_index:03d} - {title} (audio)"))
-
-        elif self.download_mode == "video":
-            output_path = self.save_path / "video" / f"{track_index:03d} - {safe_title}.mp4"
-            output_path.parent.mkdir(parents=True, exist_ok=True)
-            fmt = build_video_format(self.max_video_quality)
-            args = [
-                str(self.yt_dlp),
-                "-f",
-                fmt,
-                "--merge-output-format",
-                "mp4",
-            ]
-            if not shutil.which(str(self.ffmpeg)):
-                args += ["--ffmpeg-location", str(self.ffmpeg)]
-            args += [
-                "--download-archive",
-                str(self.archive),
-                "-o",
-                str(output_path),
-                "--external-downloader",
-                str(self.aria2c),
-                "--external-downloader-args",
-                f"aria2c:-x {self.aria2c_connections} -s {self.aria2c_connections}",
-                video_url,
-            ]
-            cmds.append((args, f"{track_index:03d} - {title} (video)"))
-
-        elif self.download_mode == "both":
-            # download video first
-            video_folder = self.save_path / "video"
-            video_folder.mkdir(parents=True, exist_ok=True)
-            video_output = video_folder / f"{track_index:03d} - {safe_title}.mp4"
-            fmt = build_video_format(self.max_video_quality)
-            video_args = [
-                str(self.yt_dlp),
-                "-f",
-                fmt,
-                "--merge-output-format",
-                "mp4",
-                "--download-archive",
-                str(self.archive),
-                "-o",
-                str(video_output),
-                "--external-downloader",
-                str(self.aria2c),
-                "--external-downloader-args",
-                f"aria2c:-x {self.aria2c_connections} -s {self.aria2c_connections}",
-                video_url,
-            ]
-            try:
-                self._run(video_args, label=f"{track_index:03d} - {title} (video)")
-            except subprocess.CalledProcessError as e:
-                err = (e.stderr or "").strip()
-                self.logger.error("Video download failed: %s — %s", title, err)
-                return False
-
-            # extract audio
-            audio_folder = self.save_path / "audio"
-            audio_folder.mkdir(parents=True, exist_ok=True)
-            audio_output = audio_folder / f"{track_index:03d} - {safe_title}.mp3"
-            ffmpeg_exe = str(self.ffmpeg)
-            if not (shutil.which(ffmpeg_exe) or Path(ffmpeg_exe).is_file()):
-                ffmpeg_exe = shutil.which("ffmpeg") or ffmpeg_exe
-
-            if ffmpeg_exe:
-                ffmpeg_cmd = [
-                    ffmpeg_exe,
-                    "-y",
-                    "-i",
-                    str(video_output),
-                    "-vn",
-                    "-codec:a",
-                    "libmp3lame",
-                    "-q:a",
-                    "0",
-                    str(audio_output),
-                ]
-                try:
-                    self._run(ffmpeg_cmd, label=f"extract audio {track_index:03d} - {title}")
-                except subprocess.CalledProcessError as e:
-                    self.logger.warning("ffmpeg failed to extract audio for %s: %s", title, (e.stderr or "").strip())
-            else:
-                self.logger.warning("ffmpeg not found; audio not extracted for %s.", title)
-
-            self.logger.info("Downloaded video and extracted audio for: %s - %s", f"{track_index:03d}", title)
-            return True
-
-        else:
-            self.logger.error("Invalid download_mode '%s', skipping", self.download_mode)
-            return False
-
-        # execute single or multiple commands
-        success = True
-        for args, label in cmds:
-            try:
-                self._run(args, label=label)
-                self.logger.info("Downloaded: %s", label)
-            except subprocess.CalledProcessError as e:
-                err_msg = (e.stderr.strip().splitlines()[-1] if e.stderr else "Unknown error")
-                self.logger.error("Download failed: %s — %s", label, err_msg)
-                success = False
-
-        return success
-
-    def renumber_all_tracks(self, playlist_entries):
-        self.logger.info("Renumbering files according to playlist order")
-        temp_suffix = ".renametemp"
-
-        final_map_audio = {}
-        final_map_video = {}
-
-        for idx, video in enumerate(playlist_entries, start=1):
-            title = video.get("title", "[Unknown]")
-            safe_title = self.sanitize_title(title, video["id"])
-
-            if self.download_mode in ("audio", "both"):
-                final_map_audio[safe_title] = f"{idx:03d} - {safe_title}.mp3"
-            if self.download_mode in ("video", "both"):
-                final_map_video[safe_title] = f"{idx:03d} - {safe_title}.mp4"
-
-        def rename_files(folder, mapping, ext):
-            folder.mkdir(parents=True, exist_ok=True)
-            for safe_title, correct_fname in mapping.items():
-                matches = list(folder.glob(f"*{ext}"))
-                for m in matches:
-                    if safe_title in m.name:
-                        if m.name != correct_fname:
-                            temp_path = m.with_suffix(m.suffix + temp_suffix)
-                            m.rename(temp_path)
-
-            for safe_title, correct_fname in mapping.items():
-                temp_match = list(folder.glob(f"*{ext}{temp_suffix}"))
-                for temp_path in temp_match:
-                    final_path = folder / correct_fname
-                    self.logger.info("Renaming '%s' → '%s'", temp_path.name, final_path.name)
-                    temp_path.rename(final_path)
-
-        if self.download_mode in ("audio", "both"):
-            rename_files(self.save_path / "audio", final_map_audio, ".mp3")
-        if self.download_mode in ("video", "both"):
-            rename_files(self.save_path / "video", final_map_video, ".mp4")
-
-        self.logger.info("Renumbering complete.")
-
-    def update(self):
-        playlist_id = self.url or self.save_path or "unknown playlist"
-        if getattr(self, "skip", False):
-            self.logger.warning("Skipping playlist '%s': URL missing in the config.", playlist_id)
-            return
-
-        self.logger.info("Updating playlist: %s", playlist_id)
-        playlist_entries = self.fetch_videos()
-        archive_ids = self.get_archive_ids()
-        new_videos = [v for v in playlist_entries if v["id"] not in archive_ids]
-
-        if not new_videos:
-            self.logger.info("No new items found.")
-        else:
-            self.logger.info("Found %d new item(s) to download.", len(new_videos))
-
-            idx_map = {v["id"]: i + 1 for i, v in enumerate(playlist_entries)}
-
-            with ThreadPoolExecutor(max_workers=self.max_parallel) as executor:
-                futures = [executor.submit(self.download_video, v, idx_map[v["id"]]) for v in new_videos]
-                for f in as_completed(futures):
-                    try:
-                        f.result()
-                    except subprocess.CalledProcessError as e:
-                        self.logger.error("Download failed: %s", e)
-
-        self.renumber_all_tracks(playlist_entries)
-        self.cleanup_removed_tracks(playlist_entries)
-
-    def cleanup_removed_tracks(self, playlist_entries):
-        self.logger.info("Checking for files not in the playlist")
-        valid_titles = set()
-        for video in playlist_entries:
-            title = video.get("title", "[Unknown]")
-            safe_title = self.sanitize_title(title, video["id"])
-            valid_titles.add(safe_title)
-
-        def clean_folder(folder, ext):
-            to_delete = []
-            folder.mkdir(parents=True, exist_ok=True)
-            for file in folder.glob(f"*{ext}"):
-                parts = file.name.split(" - ", 1)
-                if len(parts) == 2:
-                    safe_title_in_file = parts[1][: -len(ext)]
-                    if safe_title_in_file not in valid_titles:
-                        to_delete.append(file)
-
-            if not to_delete:
-                return
-
-            self.logger.warning("The following files in '%s' are not in the playlist and will be deleted:", folder)
-            for f in to_delete:
-                self.logger.warning("  %s", f.name)
-
-            if not self.prune:
-                self.logger.info("Prune disabled; no files will be deleted in '%s'.", folder)
-                return
-
-            try:
-                if self.non_interactive:
-                    confirm = "y"
-                else:
-                    confirm = input("Delete these files? [y/N]: ").strip().lower()
-            except EOFError:
-                confirm = "n"
-
-            if confirm == "y":
-                for f in to_delete:
-                    try:
-                        f.unlink()
-                        self.logger.info("Deleted: %s", f.name)
-                    except Exception as ex:
-                        self.logger.error("Failed to delete %s: %s", f.name, ex)
-                self.logger.info("Cleanup complete in '%s'.", folder)
-            else:
-                self.logger.info("Cleanup aborted in '%s'. No files were deleted.", folder)
-
-        if self.download_mode in ("audio", "both"):
-            clean_folder(self.save_path / "audio", ".mp3")
-        if self.download_mode in ("video", "both"):
-            clean_folder(self.save_path / "video", ".mp4")
@@ -1,27 +0,0 @@
-import time
-import logging
-
-from .downloader import PlaylistDownloader
-
-
-class PlaylistManager:
-    def __init__(self, config, debug: bool = False):
-        self.logger = logging.getLogger(__name__)
-        self.config = config
-        # store debug on config so PlaylistDownloader __init__ can pick it up
-        setattr(self.config, "debug", bool(debug))
-        self.playlists = [PlaylistDownloader(config, pl, idx) for idx, pl in enumerate(config.playlists)]
-
-    def run(self):
-        total_connections = self.config.max_parallel_downloads * self.config.aria2c_connections
-        if total_connections > 100:
-            self.logger.warning(
-                "Total connections (%d × %d = %d) may overload your network! Pausing 5 seconds...",
-                self.config.max_parallel_downloads,
-                self.config.aria2c_connections,
-                total_connections,
-            )
-            time.sleep(5)
-
-        for playlist in self.playlists:
-            playlist.update()
@@ -11,19 +11,13 @@ import sys
 import shutil
 import time
 from pathlib import Path
-
-from src.downloader import PlaylistDownloader
+from src.old.downloader import PlaylistDownloader
 from tests.dummy_config import DummyConfig
-
 # Make imports robust when running the script directly from different working directories.
-# Ensure the repository root and this tests folder are on sys.path so the script can import
-# both the package (`src`) and local test helpers (`tests.temp_config`).
+# Ensure the repository root is on sys.path so the script can import `src`.
 REPO_ROOT = Path(__file__).resolve().parents[1]
-TESTS_DIR = Path(__file__).resolve().parent
 if str(REPO_ROOT) not in sys.path:
    sys.path.insert(0, str(REPO_ROOT))
-if str(TESTS_DIR) not in sys.path:
-    sys.path.insert(0, str(TESTS_DIR))

 if not os.getenv("INTEGRATION_TEST"):
    print("Skipping full integration test (set INTEGRATION_TEST=1 to enable)")
@@ -1,5 +1,5 @@
 import logging
-from src.manager import PlaylistManager
+from src.old.manager import PlaylistManager
 from tests.dummy_config import DummyConfig


@@ -2,7 +2,7 @@ import logging
 import subprocess
 from types import SimpleNamespace

-import src.cli as cli_mod
+import src.old.cli as cli_mod


 class DummyCompleted(SimpleNamespace):
@@ -1,6 +1,6 @@
 import json

-from src.config import ConfigLoader
+from src.old.config import ConfigLoader


 def test_config_loader_reads_properties(tmp_path, monkeypatch):
@@ -1,7 +1,7 @@
 import subprocess
 import shutil

-from src.downloader import PlaylistDownloader
+from src.old.downloader import PlaylistDownloader
 from tests.dummy_config import DummyConfig


@@ -1,6 +1,6 @@
 from pathlib import Path

-from src.downloader import PlaylistDownloader
+from src.old.downloader import PlaylistDownloader
 from tests.dummy_config import DummyConfig


@@ -2,7 +2,7 @@ import json
 import subprocess
 from types import SimpleNamespace

-from src.downloader import PlaylistDownloader
+from src.old.downloader import PlaylistDownloader
 from tests.dummy_config import DummyConfig


@@ -1,6 +1,6 @@
 import logging
 from tests.dummy_config import DummyConfig
-from src.manager import PlaylistManager
+from src.old.manager import PlaylistManager


 def test_manager_warns_and_sleeps(monkeypatch, caplog):
@@ -1,5 +1,5 @@
 import logging
-from src.manager import PlaylistManager
+from src.old.manager import PlaylistManager
 from tests.dummy_config import DummyConfig


@@ -1,6 +1,6 @@
 from pathlib import Path

-from src.downloader import PlaylistDownloader
+from src.old.downloader import PlaylistDownloader
 from tests.dummy_config import DummyConfig


@@ -1,17 +0,0 @@
-from ytplaylist import main
-
-
-if __name__ == "__main__":
-    # Keep working directory consistent with original script behaviour
-    import os
-    import sys
-
-    os.chdir(os.path.dirname(os.path.abspath(sys.argv[0])))
-    # Ensure UTF-8 on Windows
-    if sys.platform.startswith("win"):
-        try:
-            sys.stdout.reconfigure(encoding="utf-8")  # type: ignore
-        except Exception:
-            pass
-
-    main()
Author	SHA1	Message	Date
dark_zoul	0cd693d07a	fix: fixed config file	2026-05-15 23:01:26 +03:00
dark_zoul	bf57bd77e6	fix download modes	2026-05-15 22:57:40 +03:00
dark_zoul	da8bf1786c	fix	2026-05-15 21:43:33 +03:00
dark_zoul	e4e342adf5	feat: add “fail fast” dependency check	2026-05-15 20:07:53 +03:00
dark_zoul	1ea4352737	feat: change how modes work	2026-05-15 19:19:08 +03:00
dark_zoul	812664051f	feat(sync): change ‘both’ mode to one video download +audio extraction; update DB and events accordingly	2026-05-15 18:56:08 +03:00
dark_zoul	53b7303049	readme: remove old config option	2026-05-15 18:22:09 +03:00
dark_zoul	7715d53bba	fix(backend): CLI now prints a clear hint when yt-dlp is missing and exits with code 2	2026-05-15 18:17:11 +03:00
dark_zoul	f886ebcd12	remove old settings from config example	2026-05-15 18:16:22 +03:00
dark_zoul	3faf76e097	remove old main.py; fix typo; move dockerignore	2026-05-15 17:43:55 +03:00
dark_zoul	dc3403eb9e	remove old files	2026-05-15 17:40:23 +03:00
dark_zoul	ea41c3c67f	refactor readme	2026-05-15 17:38:36 +03:00
dark_zoul	1f636fe9d2	update readme	2026-05-15 17:31:48 +03:00
dark_zoul	c736957e3c	add /app/data folder to gitignore	2026-05-15 17:28:01 +03:00
dark_zoul	cca8fad387	feat(backend): wire playlist upsert in SyncService before scanning; publish events and persist DB on rename/delete/download; worker: retry failed downloads with simple backoff; add compute/apply CLI with per-playlist summary; record last_sync after applying actions	2026-05-15 17:26:31 +03:00
dark_zoul	234e616cee	db: add playlist upsert and last_sync setter	2026-05-15 17:21:13 +03:00
dark_zoul	e54af9f2be	db: add helpers to update filename, downloaded flag, clear state, and record last_sync	2026-05-15 17:17:42 +03:00
dark_zoul	e112a7eeb7	feat(sync): persist DB updates on rename/delete/download in ActionExecutor	2026-05-15 17:17:18 +03:00
dark_zoul	fa0f9a02ce	feat(main): execute computed actions and print per-pass summary	2026-05-15 17:17:03 +03:00
dark_zoul	7e22aae1a0	feat(backend): Complete SyncService action computation; Refine DiffEngine rename/skip logic	2026-05-15 17:13:31 +03:00
dark_zoul	08e1e322f1	remove license	2026-05-15 16:30:15 +03:00
dark_zoul	e5ad786bcf	feat(backend): Implemented executor, safe renames, recycle deletes, and real yt-dlp downloads. Extended service to compute actions for audio, video, and both.	2026-05-15 14:32:48 +03:00
dark_zoul	abd3c2ed62	feat(backend): scaffold state-based sync foundation (no GUI) Add core scanner, diff engine, SQLite DB, queue, events, scheduler, utils Wire settings + bootstrap to compute actions;	2026-05-15 11:48:36 +03:00
dark_zoul	6d8649ac2d	refactor: move docker files to /docker folder; remove old buid workflow;	2026-05-15 11:34:43 +03:00
dark_zoul	658def3d58	fix: add missing fields to pyproject.toml	2026-05-15 11:27:09 +03:00
dark_zoul	0ab96e4399	start work on project refactor; create file structure move old code to /src/old	2026-05-15 10:52:10 +03:00
dark_zoul	0cea4cfcb8	fix plan	2026-05-15 10:06:59 +03:00
dark_zoul	04a7367d19	chore: move all plans to plans folder; add app conversion plan	2026-05-15 09:52:09 +03:00
darkzoul5	760b6c2f94	ci: add python packages to dependabot	2026-05-15 09:42:05 +03:00
darkzoul5	d7a05c5f52	Merge pull request #8 from darkzoul5/dependabot/github_actions/softprops/action-gh-release-3 Bump softprops/action-gh-release from 2 to 3	2026-05-07 23:15:29 +03:00
dependabot[bot]	93522423ae	Bump softprops/action-gh-release from 2 to 3 Bumps [softprops/action-gh-release](https://github.com/softprops/action-gh-release) from 2 to 3. - [Release notes](https://github.com/softprops/action-gh-release/releases) - [Changelog](https://github.com/softprops/action-gh-release/blob/master/CHANGELOG.md) - [Commits](https://github.com/softprops/action-gh-release/compare/v2...v3) --- updated-dependencies: - dependency-name: softprops/action-gh-release dependency-version: '3' dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com>	2026-04-18 17:12:33 +00:00
Mihail Volohov	e52dbdcb2e	Merge pull request #7 from darkzoul5/dependabot/github_actions/actions/download-artifact-8 Bump actions/download-artifact from 5 to 8	2026-04-15 20:04:51 +03:00
dependabot[bot]	543dd39618	Bump actions/download-artifact from 5 to 8 Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 5 to 8. - [Release notes](https://github.com/actions/download-artifact/releases) - [Commits](https://github.com/actions/download-artifact/compare/v5...v8) --- updated-dependencies: - dependency-name: actions/download-artifact dependency-version: '8' dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com>	2026-04-11 17:12:29 +00:00
dark_zoul	a841fb4fd8	Update base image to Python 3.13-alpine	2026-04-11 19:42:53 +03:00
Mihail Volohov	2b843ab322	Merge pull request #3 from darkzoul5/dependabot/github_actions/actions/checkout-6 Bump actions/checkout from 4 to 6	2026-04-11 18:10:34 +03:00
dependabot[bot]	ef57b2e79e	Bump actions/checkout from 4 to 6 Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 6. - [Release notes](https://github.com/actions/checkout/releases) - [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md) - [Commits](https://github.com/actions/checkout/compare/v4...v6) --- updated-dependencies: - dependency-name: actions/checkout dependency-version: '6' dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com>	2026-04-11 15:09:43 +00:00
Mihail Volohov	e8d955ab08	Merge pull request #2 from darkzoul5/dependabot/github_actions/actions/cache-5 Bump actions/cache from 4 to 5	2026-04-11 18:09:12 +03:00
Mihail Volohov	c0b919953d	Merge pull request #4 from darkzoul5/dependabot/github_actions/actions/setup-python-6 Bump actions/setup-python from 5 to 6	2026-04-11 18:09:00 +03:00
Mihail Volohov	5ab5dcbaf1	Merge pull request #5 from darkzoul5/dependabot/github_actions/docker/login-action-4 Bump docker/login-action from 3 to 4	2026-04-11 18:08:49 +03:00
Mihail Volohov	df6b1655cd	Merge pull request #6 from darkzoul5/dependabot/github_actions/actions/upload-artifact-7 Bump actions/upload-artifact from 6 to 7	2026-04-11 18:08:11 +03:00
dependabot[bot]	e4f0d0c97a	Bump actions/upload-artifact from 6 to 7 Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 6 to 7. - [Release notes](https://github.com/actions/upload-artifact/releases) - [Commits](https://github.com/actions/upload-artifact/compare/v6...v7) --- updated-dependencies: - dependency-name: actions/upload-artifact dependency-version: '7' dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com>	2026-04-11 15:06:58 +00:00
dependabot[bot]	22ad7af3e8	Bump docker/login-action from 3 to 4 Bumps [docker/login-action](https://github.com/docker/login-action) from 3 to 4. - [Release notes](https://github.com/docker/login-action/releases) - [Commits](https://github.com/docker/login-action/compare/v3...v4) --- updated-dependencies: - dependency-name: docker/login-action dependency-version: '4' dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com>	2026-04-11 15:06:53 +00:00
dependabot[bot]	e53b91f0e6	Bump actions/setup-python from 5 to 6 Bumps [actions/setup-python](https://github.com/actions/setup-python) from 5 to 6. - [Release notes](https://github.com/actions/setup-python/releases) - [Commits](https://github.com/actions/setup-python/compare/v5...v6) --- updated-dependencies: - dependency-name: actions/setup-python dependency-version: '6' dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com>	2026-04-11 15:06:50 +00:00
dependabot[bot]	da6e939c1d	Bump actions/cache from 4 to 5 Bumps [actions/cache](https://github.com/actions/cache) from 4 to 5. - [Release notes](https://github.com/actions/cache/releases) - [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md) - [Commits](https://github.com/actions/cache/compare/v4...v5) --- updated-dependencies: - dependency-name: actions/cache dependency-version: '5' dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com>	2026-04-11 15:06:43 +00:00
dark_zoul	a5ffa38785	chore: add dependabot configuration for GitHub Actions updates	2026-04-11 18:05:58 +03:00
dark_zoul	40c2839ffc	chore: update create-pull-request action to v8	2026-04-11 18:03:35 +03:00
dark_zoul	0c8de9aebb	Merge branch 'main' of https://github.com/darkzoul5/YoutubePlaylistDownloader	2026-04-11 18:02:04 +03:00
dark_zoul	eeb01117c3	AI: Add dependency updates workflow for automated aria2 version refresh	2026-04-11 18:01:51 +03:00
dark_zoul	25c833435f	Add project schedule	2026-04-07 10:38:47 +03:00
dark_zoul	8106fa1f04	Refactor GUI plan formatting	2026-03-20 19:28:30 +02:00
dark_zoul	b6afbb33c1	Refine project and GUI plans	2026-03-20 19:25:01 +02:00
dark_zoul	2e1ebe1eea	Update README for accuracy in usage instructions. fix typos	2026-03-20 19:12:07 +02:00
dark_zoul	ce777a59b3	Add permissions section to unit tests workflow	2026-03-19 22:09:13 +02:00
dark_zoul	10ac547458	Add concurrency settings to unit tests workflow	2026-03-19 22:08:49 +02:00
dark_zoul	77108cb1a8	Restrict branch triggers in unit tests workflow to only 'main'	2026-03-19 22:06:57 +02:00
dark_zoul	a81f69280f	move import statements in integration test to top	2026-03-18 19:59:15 +02:00
dark_zoul	148322cfb7	Fix build badge link in README to point to the correct workflow	2026-03-18 19:57:07 +02:00
dark_zoul	46a31fa0f7	Refactor import handling in integration test to simplify sys.path management	2026-03-18 19:56:07 +02:00
dark_zoul	e3559118c1	update pyproject.toml	2026-03-18 19:54:13 +02:00
dark_zoul	33f8a4e72f	Fix build process to include src folder for internal imports and adjust Dockerfile to copy src correctly	2026-03-18 19:50:17 +02:00
dark_zoul	1a1225459e	fix Windows and Linux build processes by including all submodules and data in the PyInstaller package, and ensure necessary files are copied for Docker context.	2026-03-18 19:44:55 +02:00
dark_zoul	1b7e2a70dd	Remove old build workflow and update README with new workflow link	2026-03-18 19:35:09 +02:00
				`@@ -0,0 +1 @@`
				`"""Config loader for the new backend (separate from legacy)."""`
				`@@ -0,0 +1 @@`
				`"""Utility helpers for naming, parsing, etc."""`