# github disables scheduled workflows if repo is stagnant 60d
name: weekly, if new yt-dlp version, build + push containers to docker

on:
  push:
    branches: ["master"]
  schedule:
    - cron: '0 0 * * 0'   # weekly
  workflow_dispatch:

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Get youdis version
        id: youdis
        run: |
          YOUDIS_VER=$(cat youdis-version.txt)
          if [ -z "$YOUDIS_VER" ]; then
            echo "youdis version empty" >&2
            exit 1
          fi
          echo "youdis-version=$YOUDIS_VER" >> $GITHUB_OUTPUT

      - name: Get latest yt-dlp version
        id: ytdlp
        run: |
          LATEST=$(curl -s https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest | jq -r .tag_name)
          if [ -z "$LATEST" ]; then
            echo "failed to fetch yt-dlp release" >&2
            exit 1
          fi
          echo "ytdlp-version=$LATEST" >> $GITHUB_OUTPUT

      - name: Get current yt-dlp version from latest container
        id: current_ytdlp
        run: |
          docker pull eulaly/youdis:latest || true
          if docker image inspect eulaly/youdis:latest >/dev/null 2>&1; then
            CURR=$(docker inspect --format='{{ index .Config.Labels "YTDLP_VERSION" }}' eulaly/youdis:latest)
          else
            CURR="none"
          fi
          echo "current-ytdlp=$CURR" >> $GITHUB_OUTPUT

      - name: Decide if build needed
        id: check_build
        run: |
          SHOULD_BUILD=false
          if [ "${{ steps.youdis.outputs.youdis-version }}" != "$(docker inspect --format='{{ index .Config.Labels "YOUDIS_VERSION" }}' eulaly/youdis:latest || echo none)" ]; then
            SHOULD_BUILD=true
          elif [ "${{ steps.ytdlp.outputs.ytdlp-version }}" != "${{ steps.current_ytdlp.outputs.current-ytdlp }}" ]; then
            SHOULD_BUILD=true
          fi
          echo "should_build=$SHOULD_BUILD" >> $GITHUB_OUTPUT

      - name: Login to Dockerhub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Build and push to Dockerhub
        if: ${{ steps.check_build.outputs.should_build == 'true' }}
        uses: docker/build-push-action@v5
        with:
          push: true
          tags: |
            eulaly/youdis:latest
            eulaly/youdis:ytldlp-${{ steps.ytdlp.outputs.ytdlp-version }}.youdis-${{ github.sha::7 }}
          labels: |
            YOUDIS_VERSION=${{ steps.youdis.outputs.youdis-version }}
            YTDLP_VERSION=${{ steps.ytdlp.outputs.ytdlp-version }}