name: Build FFmpeg

on:
  push: []
  schedule:
    - cron: '0 12 * * *'

jobs:
  build_base:
    name: Build base image
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2
      - name: Pull latest
        run: docker pull btbn/ffmpeg-builder:base || true
      - name: Build and push base
        uses: docker/build-push-action@v1
        with:
          username: ${{ secrets.DOCKER_USER }}
          password: ${{ secrets.DOCKER_TOKEN }}
          always_pull: true
          cache_froms: btbn/ffmpeg-builder:base
          repository: btbn/ffmpeg-builder
          tags: base
          path: images/base
  build_target_bases:
    name: Build target base image
    needs: build_base
    runs-on: ubuntu-latest
    strategy:
      matrix:
        target: [win64]
    steps:
      - name: Checkout
        uses: actions/checkout@v2
      - name: Pull latest
        run: docker pull btbn/ffmpeg-builder:base-${{ matrix.target }} || true
      - name: Build and push target base
        uses: docker/build-push-action@v1
        with:
          username: ${{ secrets.DOCKER_USER }}
          password: ${{ secrets.DOCKER_TOKEN }}
          always_pull: true
          cache_froms: btbn/ffmpeg-builder:base-${{ matrix.target }}
          repository: btbn/ffmpeg-builder
          tags: base-${{ matrix.target }}
          path: images/base-${{ matrix.target }}
  build_targets:
    name: Build target-variant image
    needs: build_target_bases
    runs-on: ubuntu-latest
    strategy:
      matrix:
        target: [win64]
        variant: [gpl,lgpl,gpl-4.2,lgpl-4.2]
    steps:
      - name: Checkout
        uses: actions/checkout@v2
      - name: Generate Dockerfile
        run: ./generate.sh ${{ matrix.target }} ${{ matrix.variant }}
      - name: Pull latest
        run: docker pull btbn/ffmpeg-builder:${{ matrix.target }}-${{ matrix.variant }} || true
      - name: Build and push target base
        uses: docker/build-push-action@v1
        with:
          username: ${{ secrets.DOCKER_USER }}
          password: ${{ secrets.DOCKER_TOKEN }}
          always_pull: true
          cache_froms: btbn/ffmpeg-builder:${{ matrix.target }}-${{ matrix.variant }}
          repository: btbn/ffmpeg-builder
          tags: ${{ matrix.target }}-${{ matrix.variant }}
  build_ffmpeg:
    name: Build ffmpeg
    needs: build_targets
    runs-on: ubuntu-latest
    strategy:
      matrix:
        target: [win64]
        variant: [gpl,lgpl,gpl-4.2,lgpl-4.2]
    steps:
      - name: Checkout
        uses: actions/checkout@v2
      - name: Build ffmpeg
        run: ./build.sh ${{ matrix.target }} ${{ matrix.variant }}
      - name: Upload artifacts
        uses: actions/upload-artifact@v2
        with:
          name: ffmpeg
          path: artifacts/*
  publish_release:
    name: Publish release
    if: github.event_name == 'schedule'
    needs: build_ffmpeg
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2
      - name: Download artifacts
        uses: actions/download-artifact@v2
        with:
          name: ffmpeg
          path: artifacts
      - name: Create release
        run: |
          set -xe
          NAME="Auto-Build $(date +'%Y-%m-%d %H:%M')"
          TAGNAME="autobuild-$(date +'%Y-%m-%d-%H-%M')"
          hub release create $(for a in artifacts/*; do echo -a $a; done) -m "$NAME" -t "master" "$TAGNAME"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}