name: Docker

on:
  push:
    branches: ['**']
    tags:
      - "v*"
    paths-ignore:
      - ".github/workflows/docs.yml"
      - "docs/**"
  pull_request:
    branches: ['**']
    paths-ignore:
      - ".github/workflows/docs.yml"
      - "docs/**"
  schedule:
    - cron: '0 0 * * *'
  workflow_dispatch:

concurrency:
  group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.head_ref || github.ref_name }}
  cancel-in-progress: true

permissions:
  contents: read

jobs:
  docker-prepare:
    name: Docker Prepare
    runs-on: ubuntu-latest
    outputs:
      meta-images: ${{ steps.meta-images.outputs.value }}
      image-tag: ${{ steps.meta-images.outputs.image-tag }}
    steps:
      - name: Build image metadata inputs
        id: meta-images
        env:
          GHCR_REPOSITORY: ${{ github.repository }}
          DOCKERHUB_USERNAME: ${{ vars.DOCKERHUB_USERNAME }}
          DOCKERHUB_REPOSITORY: ${{ vars.DOCKERHUB_REPOSITORY }}
          DEFAULT_REPOSITORY_NAME: ${{ github.event.repository.name }}
        run: |
          image_tag="sha-${GITHUB_SHA::7}"
          if [ -n "$DOCKERHUB_REPOSITORY" ]; then
            case "$DOCKERHUB_REPOSITORY" in
              */*)
                dockerhub_repository="$DOCKERHUB_REPOSITORY"
                ;;
              *)
                dockerhub_repository="$DOCKERHUB_USERNAME/$DOCKERHUB_REPOSITORY"
                ;;
            esac
          elif [ -n "$DOCKERHUB_USERNAME" ]; then
            dockerhub_repository="$DOCKERHUB_USERNAME/$DEFAULT_REPOSITORY_NAME"
          fi
          {
            echo "image-tag=$image_tag"
            echo 'value<<EOF'
            echo "ghcr.io/$GHCR_REPOSITORY"
            if [ -n "$dockerhub_repository" ]; then
              echo "docker.io/$dockerhub_repository"
            fi
            echo 'EOF'
          } >> "$GITHUB_OUTPUT"

  web-ui:
    name: Build Web UI
    runs-on: ubuntu-24.04
    outputs:
      artifact-id: ${{ steps.upload.outputs.artifact-id }}
      artifact-digest: ${{ steps.upload.outputs.artifact-digest }}
    env:
      CARGO_INCREMENTAL: "0"
      CARGO_TARGET_DIR: ${{ github.workspace }}/target/web-ui-cargo
      SYNCTV_WEB_CACHE_DIR: ${{ github.workspace }}/target/web-ui-cache
      SYNCTV_WEB_CONFIG: synctv-web-ui/web-ui.production.toml
      WEB_UI_EXPORT_DIR: ${{ github.workspace }}/synctv-web-ui/dist
    steps:
      - name: Checkout repository
        uses: actions/checkout@v5

      - name: Install Rust toolchain
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: nightly-2026-08-21

      - name: Install Flutter
        uses: subosito/flutter-action@1a449444c387b1966244ae4d4f8c696479add0b2 # v2
        with:
          channel: stable
          flutter-version: 3.44.8
          cache: true

      - name: Cache Web build inputs
        uses: actions/cache@v5
        with:
          path: |
            ~/.pub-cache
            target/web-ui-cache
          key: web-ui-${{ runner.os }}-${{ hashFiles('Cargo.lock', 'synctv-web-ui/build.rs', 'synctv-web-ui/src/build_support.rs', 'synctv-web-ui/web-ui.production.toml') }}
          restore-keys: |
            web-ui-${{ runner.os }}-

      - name: Cache Rust build artifacts
        uses: Swatinem/rust-cache@v2
        with:
          workspaces: ". -> target/web-ui-cargo"

      - name: Build Web distribution
        run: |
          cargo clean -p synctv-web-ui
          make web-ui-build
          test -f synctv-web-ui/dist/index.html

      - name: Upload Web distribution
        id: upload
        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
        with:
          name: synctv-web-ui
          path: synctv-web-ui/dist
          include-hidden-files: true
          if-no-files-found: error
          overwrite: true
          retention-days: 1

  docker-build:
    name: Docker Build
    needs:
      - docker-prepare
      - web-ui
    permissions:
      actions: read
      contents: read
      packages: write
      id-token: write
    uses: docker/github-builder/.github/workflows/build.yml@v1
    with:
      runner: |
        default=ubuntu-24.04
        linux/arm=ubuntu-24.04-arm
        linux/arm64=ubuntu-24.04-arm
      distribute: true
      platforms: linux/amd64,linux/arm64
      output: ${{ github.event_name == 'push' && 'image' || 'local' }}
      push: ${{ github.event_name == 'push' }}
      artifact-upload: false
      sign: ${{ github.event_name == 'push' && 'auto' || 'false' }}
      cache: true
      cache-mode: max
      cache-scope: synctv-image
      build-args: |
        SYNCTV_CARGO_BUILD_PROFILE=${{ github.event_name == 'pull_request' && 'dev' || 'release' }}
        SYNCTV_BUILD_FEATURES=k8s,mimalloc,openapi,web-ui
        SYNCTV_WEB_ARTIFACT_URL=https://api.github.com/repos/${{ github.repository }}/actions/artifacts/${{ needs.web-ui.outputs.artifact-id }}/zip
        SYNCTV_WEB_ARTIFACT_DIGEST=${{ needs.web-ui.outputs.artifact-digest }}
        CARGO_INCREMENTAL=0
        CARGO_TERM_COLOR=always
      set-meta-annotations: true
      set-meta-labels: true
      meta-images: ${{ needs.docker-prepare.outputs.meta-images }}
      meta-tags: |
        type=ref,event=branch
        type=ref,event=pr
        type=ref,event=tag
        type=semver,pattern={{version}}
        type=semver,pattern={{major}}.{{minor}}
        type=raw,value=${{ needs.docker-prepare.outputs.image-tag }}
    secrets:
      registry-auths: |
        - registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}
        ${{ vars.DOCKERHUB_USERNAME != '' && secrets.DOCKERHUB_PASSWORD != '' && format('- registry: docker.io
          username: {0}
          password: {1}', vars.DOCKERHUB_USERNAME, secrets.DOCKERHUB_PASSWORD) || '' }}

  publish-image-digest:
    name: Publish image digest
    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
    needs: docker-build
    runs-on: ubuntu-24.04
    permissions:
      contents: write
    steps:
      - name: Wait for component release
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          RELEASE_TAG: ${{ github.ref_name }}
        run: |
          for attempt in {1..60}; do
            if gh release view "$RELEASE_TAG" --repo "$GITHUB_REPOSITORY" >/dev/null 2>&1; then
              exit 0
            fi
            echo "Waiting for GitHub Release $RELEASE_TAG (attempt $attempt/60)."
            sleep 10
          done
          echo "Timed out waiting for GitHub Release $RELEASE_TAG." >&2
          exit 1

      - name: Upload image digest asset
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          IMAGE_DIGEST: ${{ needs.docker-build.outputs.digest }}
          RELEASE_TAG: ${{ github.ref_name }}
        run: |
          [[ "$IMAGE_DIGEST" =~ ^sha256:[0-9a-f]{64}$ ]] || {
            echo "Docker builder returned an invalid image digest: $IMAGE_DIGEST" >&2
            exit 1
          }
          printf '%s\n' "$IMAGE_DIGEST" > image-digest.txt
          gh release upload "$RELEASE_TAG" image-digest.txt \
            --repo "$GITHUB_REPOSITORY" \
            --clobber