name: Check and Update yt-dlp and spotdl versions

on:
  schedule:
    - cron: '0 12 * * *'
  workflow_dispatch:

jobs:
  check-versions:
    runs-on: ubuntu-latest
    outputs:
      updated_flag: ${{ steps.check_flags.outputs.updated_flag }}

    steps:
    - name: Checkout code
      uses: actions/checkout@v4
      with:
        token: ${{ secrets.PAT }}

    - name: Set up Python
      uses: actions/setup-python@v5
      with:
        python-version: '3.12'

    - name: Get latest yt-dlp and spotdl versions
      id: get_latest_versions
      run: |
        pip install yt-dlp spotdl
        latest_ytdlp=$(yt-dlp --version)
        latest_spotdl=$(spotdl --version)
        echo "Latest yt-dlp version: $latest_ytdlp"
        echo "Latest spotdl version: $latest_spotdl"
        echo "latest_ytdlp=$latest_ytdlp" >> $GITHUB_ENV
        echo "latest_spotdl=$latest_spotdl" >> $GITHUB_ENV

    - name: Extract versions from requirements.txt
      id: extract_versions
      run: |
        current_ytdlp=$(grep -oP "(?<=yt_dlp\[default\]==)\d+(\.\d+)+" requirements.txt || echo "0.0")
        current_spotdl=$(grep -oP "(?<=spotdl==)\d+(\.\d+)+" requirements.txt || echo "0.0")
        echo "Version in requirements.txt - yt-dlp: $current_ytdlp, spotdl: $current_spotdl"
        echo "current_ytdlp=$current_ytdlp" >> $GITHUB_ENV
        echo "current_spotdl=$current_spotdl" >> $GITHUB_ENV

    - name: Update yt-dlp in requirements.txt if new version available
      id: update_ytdlp
      run: |
        if [ "${{ env.latest_ytdlp }}" != "${{ env.current_ytdlp }}" ]; then
          sed -i "s/^yt_dlp.*/yt_dlp[default]==${{ env.latest_ytdlp }}/" requirements.txt
          git config --global user.email "updater@spotspot"
          git config --global user.name "AutoUpdater"
          git commit -m "Update yt-dlp to ${{ env.latest_ytdlp }}" requirements.txt
          git push
          echo "updated_flag=true" >> $GITHUB_OUTPUT
          echo "yt_dlp_updated_flag=true" >> $GITHUB_ENV
        else
          echo "yt_dlp_updated_flag=false" >> $GITHUB_ENV
        fi

    - name: Update spotdl in requirements.txt if new version available
      id: update_spotdl
      run: |
        if [ "${{ env.latest_spotdl }}" != "${{ env.current_spotdl }}" ]; then
          sed -i "s/^spotdl.*/spotdl==${{ env.latest_spotdl }}/" requirements.txt
          git config --global user.email "updater@spotspot"
          git config --global user.name "AutoUpdater"
          git commit -m "Update spotdl to ${{ env.latest_spotdl }}" requirements.txt
          git push
          echo "spotdl_updated_flag=true" >> $GITHUB_ENV
        else
          echo "spotdl_updated_flag=false" >> $GITHUB_ENV
        fi

    - name: Check if release is needed
      id: check_flags
      run: |
        if [ "${{ env.yt_dlp_updated_flag }}" == "true" ] || [ "${{ env.spotdl_updated_flag }}" == "true" ]; then
          echo "updated_flag=true" >> $GITHUB_OUTPUT
        else
          echo "updated_flag=false" >> $GITHUB_OUTPUT
        fi

  generate-release:
    runs-on: ubuntu-latest
    needs: check-versions
    if: ${{ needs.check-versions.outputs.updated_flag == 'true' }}

    env:
      GH_TOKEN: ${{ secrets.PAT }}

    steps:    
    - name: Checkout code
      uses: actions/checkout@v4
      with:
        token: ${{ secrets.PAT }}

    - name: Pull latest changes
      run: git pull origin main
    
    - name: Fetch and list tags
      run: |
        git fetch --tags
        echo "Tags:"
        git tag --list

    - name: Increment release
      id: increment_release
      run: |
        latest_tag=$(git tag --list | grep -v 'testing' | sed 's/^v//' | sort -V | tail -n 1 || echo "0.0.0")
        major=$(echo $latest_tag | cut -d. -f1)
        minor=$(echo $latest_tag | cut -d. -f2)
        patch=$(echo $latest_tag | cut -d. -f3)
        new_patch=$((patch + 1))
        new_tag="v${major}.${minor}.${new_patch}"

        echo "CURRENT_RELEASE=$latest_tag" >> $GITHUB_ENV
        echo "NEW_RELEASE=$new_tag" >> $GITHUB_ENV
        echo "Current release: $latest_tag"
        echo "New release: $new_tag"

    - name: Create new Git tag
      run: |
        git config --global user.name 'github-actions[bot]'
        git config --global user.email 'github-actions[bot]@users.noreply.github.com'
        git tag -a ${{ env.NEW_RELEASE }} -m "Release version ${{ env.NEW_RELEASE }}"
        git push origin ${{ env.NEW_RELEASE }}

    - name: Create release
      run: |
        gh release create "${{ env.NEW_RELEASE }}" \
            --repo="${GITHUB_REPOSITORY}" \
            --title="${{ env.NEW_RELEASE }}" \
            --generate-notes