check-anki-release.yml

# Thanks to: 
# https://stackoverflow.com/questions/58465057/trigger-a-github-action-when-another-repository-creates-a-new-release

name: Check for new Anki release

on:
  schedule:
    # triggered at 12:00 every day
    - cron: 0 12 * * *
  workflow_dispatch:

jobs:
  check:
    runs-on: ubuntu-latest

    steps:

      - name: Download release version of last run
        id: download_last_release_version
        uses: dawidd6/action-download-artifact@v6
        with:
          name: anki-release-version
          workflow_conclusion: success
          workflow: build-and-publish-image.yml
          if_no_artifact_found: warn

      - name: Retrieve latest release version
        id: retrieve_latest_release_version
        run: |
          LATEST_RELEASE_VERSION=$(curl -s https://api.github.com/repos/ankitects/anki/releases/latest | jq -r '.tag_name')
          echo "latest_release_version=$LATEST_RELEASE_VERSION" >> $GITHUB_OUTPUT

      - name: Compare with last release version
        id: compare_release_version
        run: |
          LAST_RELEASE_VERSION=$(cat anki-release-version 2> /dev/null || echo "NOT FOUND")
          echo "Latest: ${{ steps.retrieve_latest_release_version.outputs.LATEST_RELEASE_VERSION }}"
          echo "Last: $LAST_RELEASE_VERSION"

          if [ "${{ steps.retrieve_latest_release_version.outputs.LATEST_RELEASE_VERSION }}" != "$LAST_RELEASE_VERSION" ]; then
            echo "release_version_changed=true" >> $GITHUB_OUTPUT
          else
            echo "release_version_changed=false" >> $GITHUB_OUTPUT
          fi

      - name: Trigger build and publish workflow
        if: steps.compare_release_version.outputs.release_version_changed == 'true'
        uses: benc-uk/workflow-dispatch@v1
        with:
          workflow: build-and-publish-image.yml