name: Docker Build & Push

on:
  workflow_dispatch:
  push:
    branches-ignore: ["dependabot/**"]
    tags: ["v*"]
    paths:
      - "MesoAibe.Core/**"
      - "MesoAibe.Ingest/**"
      - "MesoAibe.Service/**"
      - "Dockerfile"
      - "nuget.config.template"
  pull_request:
    branches: [main]
    paths:
      - "MesoAibe.Core/**"
      - "MesoAibe.Ingest/**"
      - "MesoAibe.Service/**"
      - "Dockerfile"
      - "nuget.config.template"

# Pushende Laeufe (main/Tags/Feature-Branches) serialisieren sich pro Ref, damit kein
# spaeter fertig werdender aelterer Lauf ein neueres Image ueberschreibt. PR-Validierungen
# pushen nichts und duerfen sich gegenseitig abbrechen.
concurrency:
  group: docker-${{ github.ref }}
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}

permissions:
  contents: read
  packages: write

env:
  DOTNET_SKIP_FIRST_TIME_EXPERIENCE: true
  DOTNET_CLI_TELEMETRY_OPTOUT: true
  REGISTRY: ghcr.io
  IMAGE_NAME: mesoaibe

jobs:
  docker:
    # Dependabot-Laeufe haben nur einen lesenden GITHUB_TOKEN und sehen die Actions-Secrets
    # (GITHUBUSERNAME/-PASSWORD, DEVEXPRESS_LICENSE, AZCR_*) nicht - der Build wuerde ohnehin
    # am NuGet-Restore scheitern (branches-ignore filtert das bereits fuer push, hier zusaetzlich
    # fuer den Fall eines Dependabot-PRs).
    if: github.actor != 'dependabot[bot]'
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v7

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v4

      - name: Log in to GHCR
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v4.6.0
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      # Nur der stabile Kanal (main-Branch, v*-Tag) landet zusaetzlich in der ACR - Beta-Images
      # aus Feature-Branches bleiben auf GHCR.
      - name: Log in to Azure Container Registry
        if: github.event_name != 'pull_request' && (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/v'))
        uses: docker/login-action@v4.6.0
        with:
          registry: csscontainers.azurecr.io
          username: ${{ secrets.AZCR_USERNAME }}
          password: ${{ secrets.AZCR_PASSWORD }}

      - name: Kanal & Version ermitteln
        id: determine
        run: |
          if [[ "${{ github.ref }}" == refs/tags/v* ]]; then
            echo "channel=stable" >> "$GITHUB_OUTPUT"
            echo "version=${GITHUB_REF#refs/tags/v}" >> "$GITHUB_OUTPUT"
          elif [[ "${{ github.ref }}" == "refs/heads/main" ]]; then
            echo "channel=stable" >> "$GITHUB_OUTPUT"
            echo "version=$(date +%Y.%m.%d).${{ github.run_number }}" >> "$GITHUB_OUTPUT"
          else
            SLUG=$(echo "${{ github.ref_name }}" | tr '/' '-' | tr '[:upper:]' '[:lower:]' | sed 's/[^a-z0-9-]/-/g')
            echo "channel=beta" >> "$GITHUB_OUTPUT"
            echo "version=beta-$SLUG-$(date +%Y%m%d).${{ github.run_number }}" >> "$GITHUB_OUTPUT"
          fi

      - name: Image-Liste ermitteln
        id: images
        run: |
          {
            echo "list<<EOF"
            echo "${{ env.REGISTRY }}/${{ github.repository_owner }}/${{ env.IMAGE_NAME }}"
            if [[ "${{ github.event_name }}" != "pull_request" && ( "${{ github.ref }}" == "refs/heads/main" || "${{ github.ref }}" == refs/tags/v* ) ]]; then
              echo "csscontainers.azurecr.io/${{ env.IMAGE_NAME }}"
            fi
            echo "EOF"
          } >> "$GITHUB_OUTPUT"

      - name: Docker meta (stable)
        if: steps.determine.outputs.channel == 'stable'
        id: meta-stable
        uses: docker/metadata-action@v6
        with:
          images: ${{ steps.images.outputs.list }}
          tags: |
            type=raw,value=${{ steps.determine.outputs.version }}
            type=raw,value=latest
            type=sha,prefix=sha-,format=short
          labels: |
            org.opencontainers.image.title=MesoAibe.Service
            org.opencontainers.image.version=${{ steps.determine.outputs.version }}
            org.opencontainers.image.source=${{ github.repositoryUrl }}

      - name: Docker meta (beta)
        if: steps.determine.outputs.channel == 'beta'
        id: meta-beta
        uses: docker/metadata-action@v6
        with:
          images: ${{ steps.images.outputs.list }}
          tags: |
            type=raw,value=beta
            type=raw,value=${{ steps.determine.outputs.version }}
            type=sha,prefix=beta-sha-,format=short
          labels: |
            org.opencontainers.image.title=MesoAibe.Service
            org.opencontainers.image.version=${{ steps.determine.outputs.version }}
            org.opencontainers.image.source=${{ github.repositoryUrl }}
            io.css.channel=beta

      - name: Build (& Push)
        uses: docker/build-push-action@v7
        with:
          context: .
          file: ./Dockerfile
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.determine.outputs.channel == 'stable' && steps.meta-stable.outputs.tags || steps.meta-beta.outputs.tags }}
          labels: ${{ steps.determine.outputs.channel == 'stable' && steps.meta-stable.outputs.labels || steps.meta-beta.outputs.labels }}
          secrets: |
            GITHUBUSERNAME=${{ secrets.GITHUBUSERNAME }}
            GITHUBPASSWORD=${{ secrets.GITHUBPASSWORD }}
            DevExpress_License=${{ secrets.DEVEXPRESS_LICENSE }}
          build-args: |
            DOTNET_VERSION=10.0
          cache-from: type=gha
          cache-to: type=gha,mode=max
          provenance: false
          sbom: false