name: Build and Publish Docker Images
run-name: Build & Publish by @${{ github.actor }}

on:
  push:
    branches: [ "main" ]
    paths:
      - 'backend/**'
      - 'platform/**'
      - 'core/**'
      - 'frontend/**'
      - 'config/docker/**'
      - 'docker-compose.yaml'
      - '.gitea/workflows/docker-publish.yaml'

env:
  # Interner Registry-Endpunkt: direkter HTTP-Zugriff, umgeht Pangolin-Tunnel komplett
  REGISTRY_INTERNAL: 10.0.0.22:3000
  IMAGE_PREFIX: mocode-software/meldestelle
  JAVA_VERSION: "25"
  GRADLE_VERSION: "9.3.1"
  KEYCLOAK_IMAGE_TAG: "26.5.5"
  # Workers auf 4 limitiert: verhindert OOM auf dem 16GB Runner (VM 102)
  GRADLE_OPTS: "-Dorg.gradle.parallel=true -Dorg.gradle.workers.max=4"
  JVM_OPTS_ARM64: "-XX:ActiveProcessorCount=8 -XX:+UseZGC -XX:+UseTransparentHugePages"

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      # max-parallel: 1 → sequenzielle Ausführung verhindert RAM-OOM auf Zora (16GB VM)
      max-parallel: 1
      matrix:
        include:
          - service: keycloak
            context: .
            dockerfile: config/docker/keycloak/Dockerfile
            image: keycloak
          - service: api-gateway
            context: .
            dockerfile: backend/infrastructure/gateway/Dockerfile
            image: api-gateway
          - service: ping-service
            context: .
            dockerfile: backend/services/ping/Dockerfile
            image: ping-service
          - service: web-app
            context: .
            dockerfile: config/docker/caddy/web-app/Dockerfile
            image: web-app

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Set up JDK ${{ env.JAVA_VERSION }}
        uses: actions/setup-java@v4
        with:
          java-version: ${{ env.JAVA_VERSION }}
          distribution: "temurin"
          cache: gradle

      - name: Setup Gradle Cache
        uses: actions/cache@v4
        with:
          path: |
            ~/.gradle/caches
            ~/.gradle/wrapper
          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
          restore-keys: |
            ${{ runner.os }}-gradle-

      # Verhindert mysteriöse Build-Fehler durch korrupte Node/Kotlin-Caches (nur web-app relevant)
      - name: Cleanup stale build caches
        if: matrix.service == 'web-app'
        run: |
          rm -rf frontend/shells/meldestelle-portal/build/js/node_modules/.cache || true
          rm -rf frontend/shells/meldestelle-portal/build/js/.yarn/cache || true
          rm -rf ~/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-compiler-embeddable || true

      - name: Build Frontend (Kotlin JS)
        if: matrix.service == 'web-app'
        run: |
          chmod +x gradlew
          ./gradlew :frontend:shells:meldestelle-portal:jsBrowserDistribution \
            -Pproduction=true \
            --max-workers=4 \
            -Dkotlin.daemon.jvm.options="-Xmx4g"

      # Pangolin-Bypass: Credentials direkt in config.json schreiben.
      # Kein "docker login" → kein Daemon-Ping → kein HTTPS-Fehler.
      # BuildKit liest ~/.docker/config.json und verwendet diese Credentials beim Push.
#      - name: Registry-Credentials konfigurieren (kein Daemon-Kontakt)
#        run: |
#          mkdir -p ~/.docker
#          AUTH=$(echo -n "${{ secrets.REGISTRY_USER }}:${{ secrets.REGISTRY_TOKEN }}" | base64 -w 0)
#          printf '{"auths":{"%s":{"auth":"%s"}}}\n' "${{ env.REGISTRY_INTERNAL }}" "${AUTH}" > ~/.docker/config.json
#          echo "✓ Credentials für ${{ env.REGISTRY_INTERNAL }} gespeichert"

      # NEU (sauber, nach daemon.json-Fix):
      - name: Login to Gitea Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY_INTERNAL }}
          username: ${{ secrets.REGISTRY_USER }}
          password: ${{ secrets.REGISTRY_TOKEN }}

      # BuildKit-Instanz mit HTTP-Unterstützung für die interne Registry konfigurieren.
      # KEIN sudo, KEIN systemctl, KEIN Neustart — rein konfigurativ.
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
        with:
          config-inline: |
            [registry."10.0.0.22:3000"]
              http = true
              insecure = true

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY_INTERNAL }}/${{ env.IMAGE_PREFIX }}/${{ matrix.image }}
          tags: |
            type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' }}
            type=sha,format=long

      - name: Build and push Docker image
        uses: docker/build-push-action@v6
        with:
          context: ${{ matrix.context }}
          file: ${{ matrix.dockerfile }}
          push: true
          platforms: linux/arm64
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          provenance: false
          sbom: false
          build-args: |
            DOCKER_BUILD_DATE=$(date -u +'%Y-%m-%dT%H:%M:%SZ')
            VERSION=${{ github.sha }}
            GRADLE_VERSION=${{ env.GRADLE_VERSION }}
            JAVA_VERSION=${{ env.JAVA_VERSION }}
            KEYCLOAK_IMAGE_TAG=${{ env.KEYCLOAK_IMAGE_TAG }}
            JVM_OPTS_APPEND=${{ env.JVM_OPTS_ARM64 }}