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