poll_releases.yml

name: Poll branch releases
on:
  workflow_call:
    inputs:
      branch:
        description: 'App branch'
        type: string
        default: 'master'

    outputs:
      latestTag:
        description: 'Current release tag'
        value: '${{ jobs.check-latest.outputs.tag }}'
      updateRequired:
        description: 'New version found'
        value: ${{ jobs.check-latest.outputs.update }}
      upstreamVersion:
        description: 'Upstream version'
        value: '${{ jobs.check-latest.outputs.version }}'

jobs:
  check-latest:
    name: Check latest version
    runs-on: ubuntu-latest

    permissions:
      contents: write

    strategy:
      fail-fast: true
      matrix:
        arch: ["amd64"]
        include:
          - arch: amd64
            os: ubuntu-latest

    outputs:
      tag: 'v${{ steps.current.outputs.version }}'
      update: ${{ steps.check_tag.outputs.exists == 'false' }}
      version: '${{ steps.upstream.outputs.version }}'

    steps:
    - name: Get upstream version
      id: upstream
      run: |
        TAG=$(curl -sL --request GET \
          --url "https://api.github.com/repos/Jackett/Jackett/releases" \
          --header "Accept: application/vnd.github+json" \
          --header "Authorization: token ${{ github.token }}" \
          | jq -r 'first(.[]) | .tag_name')
        
        echo "version=${TAG//v}" >> $GITHUB_OUTPUT

    - name: Get current release
      id: current
      run: |
        TAG=$(curl -sL --request GET \
          --url "${{ github.api_url }}/repos/${{ github.repository }}/releases" \
          --header "Accept: application/vnd.github+json" \
          --header "Authorization: token ${{ github.token }}" \
          | jq -r 'first(.[]) | .tag_name')

        echo "version=${TAG//v}" >> $GITHUB_OUTPUT

    - name: Check if tag exists
      uses: mukunku/tag-exists-action@v1.6.0
      id: check_tag
      with:
        tag: 'v${{ steps.upstream.outputs.version }}'

    - uses: actions/checkout@v4
      if: steps.check_tag.outputs.exists == 'false'

    - name: Update Readme
      uses: MathieuSoysal/file-updater-for-release@v1.0.3
      if: steps.check_tag.outputs.exists == 'false'
      with:
        files: README.md
        version: '${{ steps.upstream.outputs.version }}'
        old-version: '${{ steps.current.outputs.version }}'
        with-checkout: false
    
    - name: Push changes
      uses: EndBug/add-and-commit@v9
      if: steps.check_tag.outputs.exists == 'false'
      with:
        committer_name: GitHub Actions
        committer_email: actions@github.com
        message: 'docs: Bump image version to ${{ steps.upstream.outputs.version }}'
        tag: 'v${{ steps.upstream.outputs.version }}'