name: Build FFmpeg

on:
  push:
    paths-ignore:
      - '**.md'
      - 'LICENSE'
  workflow_dispatch:
    inputs:
      doRelease:
        description: 'Publish new release'
        type: boolean
        default: false
        required: false
      buildOnly:
        description: 'Only build ffmpeg'
        type: boolean
        default: false
        required: false
  schedule:
    - cron: '0 12 * * *'

env:
  DOCKER_BUILDKIT: 1
  HAVE_CLEANUP_PAT: ${{ secrets.CLEANUP_PAT != '' }}

jobs:
  pre_check:
    name: Pre Checks
    if: ${{ github.event.inputs.buildOnly != 'true' }}
    runs-on: ubuntu-latest
    steps:
      - name: Repo Check
        run: |
          if [[ "$GITHUB_REPOSITORY" != "BtbN/FFmpeg-Builds" ]]; then
            echo "When forking this repository to make your own builds, you have to adjust this check."
            echo "When doing so make sure to randomize the scheduled cron time above, in order to spread out the various build times as much as possible."
            echo "This has been put in place due to the enormous amounts of traffic hundreds/thousands of parallel builds can cause on external infrastructure."
            exit 1
          fi
          exit 0
  build_base:
    name: Build base image
    if: ${{ github.event.inputs.buildOnly != 'true' }}
    needs: pre_check
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Install buildx
        uses: docker/setup-buildx-action@v2
        with:
          config: .github/buildkit.toml
      - name: Login to Docker
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ github.token }}
      - name: Image Name
        id: imagename
        run: |
          IMG="${GITHUB_REPOSITORY,,}/base"
          DLIMG="${GITHUB_REPOSITORY,,}/dl_cache"
          echo "name=ghcr.io/${IMG/ /-}" >> $GITHUB_OUTPUT
          echo "rawname=${IMG/ /-}" >> $GITHUB_OUTPUT
          echo "dlname=ghcr.io/${DLIMG/ /-}" >> $GITHUB_OUTPUT
          echo "dlrawname=${DLIMG/ /-}" >> $GITHUB_OUTPUT
      - name: Stop Commands
        run: T="$(echo -n ${{ github.token }} | sha256sum | head -c 64)" && echo -e "::add-mask::${T}\n::stop-commands::${T}"
      - name: Build target base image
        uses: docker/build-push-action@v3
        with:
          context: images/base
          pull: true
          push: true
          tags: ${{ steps.imagename.outputs.name }}:latest
          cache-to: type=registry,mode=max,ref=${{ steps.imagename.outputs.name }}:cache
          cache-from: type=registry,ref=${{ steps.imagename.outputs.name }}:cache
      - name: Generate download cache Dockerfile
        id: dl_cache
        run: |
          ./generate.sh dl only
          echo "dltagname=$(./util/get_dl_cache_tag.sh)" >> $GITHUB_OUTPUT
          cat Dockerfile.dl
      - name: Build download cache image
        uses: docker/build-push-action@v3
        with:
          context: .
          file: Dockerfile.dl
          pull: true
          push: true
          tags: ${{ steps.imagename.outputs.dlname }}:${{ steps.dl_cache.outputs.dltagname }}
          cache-to: type=registry,mode=max,ref=${{ steps.imagename.outputs.dlname }}:cache
          cache-from: type=registry,ref=${{ steps.imagename.outputs.dlname }}:cache
      - name: Cleanup
        if: ${{ env.HAVE_CLEANUP_PAT == 'true' }}
        continue-on-error: true
        uses: BtbN/delete-untagged-ghcr-action@main
        with:
          token: ${{ secrets.CLEANUP_PAT }}
          package_name: ${{ steps.imagename.outputs.rawname }}
          repository_owner: ${{ github.repository_owner }}
          repository: ${{ github.repository }}
          owner_type: user
          untagged_only: true
      - name: Cleanup Download Cache
        if: ${{ env.HAVE_CLEANUP_PAT == 'true' }}
        continue-on-error: true
        uses: BtbN/delete-untagged-ghcr-action@main
        with:
          token: ${{ secrets.CLEANUP_PAT }}
          package_name: ${{ steps.imagename.outputs.dlrawname }}
          repository_owner: ${{ github.repository_owner }}
          repository: ${{ github.repository }}
          owner_type: user
          untagged_only: false
          keep_latest: 20
  build_target_bases:
    name: Build target base image
    if: ${{ github.event.inputs.buildOnly != 'true' }}
    needs: build_base
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        target: [win64,linux64,linuxarm64]
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Install buildx
        uses: docker/setup-buildx-action@v2
        with:
          config: .github/buildkit.toml
      - name: Login to Docker
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ github.token }}
      - name: Image Name
        id: imagename
        run: |
          IMG="${GITHUB_REPOSITORY,,}/base-${{ matrix.target }}"
          echo "name=ghcr.io/${IMG/ /-}" >> $GITHUB_OUTPUT
          echo "rawname=${IMG/ /-}" >> $GITHUB_OUTPUT
          echo "gh_repo=${GITHUB_REPOSITORY,,}" >> $GITHUB_OUTPUT
      - name: Stop Commands
        run: T="$(echo -n ${{ github.token }} | sha256sum | head -c 64)" && echo -e "::add-mask::${T}\n::stop-commands::${T}"
      - name: Build target base image
        uses: docker/build-push-action@v3
        with:
          context: images/base-${{ matrix.target }}
          pull: true
          push: true
          tags: ${{ steps.imagename.outputs.name }}:latest
          cache-to: type=registry,mode=max,ref=${{ steps.imagename.outputs.name }}:cache
          cache-from: type=registry,ref=${{ steps.imagename.outputs.name }}:cache
          build-args: |
            GH_REPO=ghcr.io/${{ steps.imagename.outputs.gh_repo }}
      - name: Cleanup
        if: ${{ env.HAVE_CLEANUP_PAT == 'true' }}
        continue-on-error: true
        uses: BtbN/delete-untagged-ghcr-action@main
        with:
          token: ${{ secrets.CLEANUP_PAT }}
          package_name: ${{ steps.imagename.outputs.rawname }}
          repository_owner: ${{ github.repository_owner }}
          repository: ${{ github.repository }}
          owner_type: user
          untagged_only: true
  build_targets:
    name: Build target-variant image
    if: ${{ github.event.inputs.buildOnly != 'true' }}
    needs: build_target_bases
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        target: [win64,linux64,linuxarm64]
        variant: [gpl,lgpl,gpl 4.4,gpl 5.1,gpl 6.0,lgpl 4.4,lgpl 5.1,lgpl 6.0,gpl-shared,lgpl-shared,gpl-shared 4.4,gpl-shared 5.1,gpl-shared 6.0,lgpl-shared 4.4,lgpl-shared 5.1,lgpl-shared 6.0]
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Install buildx
        uses: docker/setup-buildx-action@v2
        with:
          config: .github/buildkit.toml
      - name: Login to Docker
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ github.token }}
      - name: Generate Dockerfile
        run: ./generate.sh ${{ matrix.target }} ${{ matrix.variant }}
      - name: Image Name
        id: imagename
        run: |
          IMG="${GITHUB_REPOSITORY,,}/${{ matrix.target }}-${{ matrix.variant }}"
          echo "name=ghcr.io/${IMG/ /-}" >> $GITHUB_OUTPUT
          echo "rawname=${IMG/ /-}" >> $GITHUB_OUTPUT
      - name: Stop Commands
        run: T="$(echo -n ${{ github.token }} | sha256sum | head -c 64)" && echo -e "::add-mask::${T}\n::stop-commands::${T}"
      - name: Build target base image
        uses: docker/build-push-action@v3
        with:
          context: .
          pull: true
          push: true
          tags: ${{ steps.imagename.outputs.name }}:latest
          cache-to: type=registry,mode=max,ref=${{ steps.imagename.outputs.name }}:cache
          cache-from: type=registry,ref=${{ steps.imagename.outputs.name }}:cache
      - name: Cleanup
        if: ${{ env.HAVE_CLEANUP_PAT == 'true' }}
        continue-on-error: true
        uses: BtbN/delete-untagged-ghcr-action@main
        with:
          token: ${{ secrets.CLEANUP_PAT }}
          package_name: ${{ steps.imagename.outputs.rawname }}
          repository_owner: ${{ github.repository_owner }}
          repository: ${{ github.repository }}
          owner_type: user
          untagged_only: true
  build_ffmpeg:
    name: Build ffmpeg
    if: ${{ ( github.event.inputs.buildOnly == 'true' && !cancelled() ) || success() }}
    needs: build_targets
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        target: [win64,linux64,linuxarm64]
        variant: [gpl,lgpl,gpl 4.4,gpl 5.1,gpl 6.0,lgpl 4.4,lgpl 5.1,lgpl 6.0,gpl-shared,lgpl-shared,gpl-shared 4.4,gpl-shared 5.1,gpl-shared 6.0,lgpl-shared 4.4,lgpl-shared 5.1,lgpl-shared 6.0]
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Login to Docker
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ github.token }}
      - name: Build ffmpeg
        run: |
          T="$(echo -n ${{ github.token }} | sha256sum | head -c 64)" && echo -e "::add-mask::${T}\n::stop-commands::${T}"
          ./build.sh ${{ matrix.target }} ${{ matrix.variant }}
      - name: Upload artifacts
        uses: actions/upload-artifact@v3
        with:
          name: ffmpeg
          path: artifacts/*
  publish_release:
    name: Publish release
    if: ${{ !cancelled() && ( github.event_name == 'schedule' || github.event.inputs.doRelease == 'true' ) && needs.build_ffmpeg.result == 'success' }}
    needs: build_ffmpeg
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Download artifacts
        uses: actions/download-artifact@v3
        with:
          name: ffmpeg
          path: artifacts
      - name: Create release
        id: create_release
        run: |
          set -xe
          shopt -s nullglob
          RELDATE="$(date +'%Y-%m-%d %H:%M')"
          NAME="Auto-Build $RELDATE"
          TAGNAME="autobuild-$(date +'%Y-%m-%d-%H-%M')"
          hub release create $(for a in artifacts/*.{zip,tar.xz}; do echo -a $a; done) -m "$NAME" -t "master" "$TAGNAME"
          echo "tag_name=${TAGNAME}" >> $GITHUB_OUTPUT
          echo "rel_date=${RELDATE}" >> $GITHUB_OUTPUT
        env:
          GITHUB_TOKEN: ${{ github.token }}
      - name: Update Latest
        run: |
          set -xe
          shopt -s nullglob
          mkdir latest_artifacts
          ./util/repack_latest.sh latest_artifacts artifacts/*.{zip,tar.xz}
          NAME="Latest Auto-Build (${{ steps.create_release.outputs.rel_date }})"
          TAGNAME="latest"
          hub release delete "$TAGNAME" || true
          git push --delete origin "$TAGNAME" || true
          sleep 15
          hub release create $(for a in latest_artifacts/*; do echo -a $a; done) -m "$NAME" -t "master" "$TAGNAME"
        env:
          GITHUB_TOKEN: ${{ github.token }}
      - name: Update Wiki
        run: ./util/update_wiki.sh artifacts ${{ steps.create_release.outputs.tag_name }}
        env:
          GITHUB_TOKEN: ${{ github.token }}
      - name: Prune old releases
        run: ./util/prunetags.sh
        env:
          GITHUB_TOKEN: ${{ github.token }}