name: Publish Docker Images

on:
  push:
    branches:
      - main
    paths:
      - "apps/server/**"
      - "apps/dashboard/**"
      - "apps/workflows/**"
      - "apps/private-location/**"
      - "apps/status-page/**"
      - "apps/checker/**"
      - "packages/**"
      - "docker-compose.yaml"
  workflow_dispatch:
    inputs:
      services:
        description: 'Services to build (comma-separated)'
        required: false
        default: 'server,dashboard,workflows,private-location,status-page,checker'
        type: string

concurrency:
  group: docker-${{ github.ref }}
  cancel-in-progress: true

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: openstatus

jobs:
  prepare:
    runs-on: ubuntu-latest
    outputs:
      services: ${{ steps.set-services.outputs.services }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6
        with:
          fetch-depth: 2

      - name: Determine services to build
        id: set-services
        run: |
          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
            # Convert comma-separated input to JSON array
            SERVICES=$(echo "${{ inputs.services }}" | tr ',' '\n' | jq -R . | jq -sc .)
          else
            # Detect changed files
            CHANGED=$(git diff --name-only HEAD~1 HEAD)
            SERVICES_LIST=()

            # packages/** changes affect all services
            if echo "$CHANGED" | grep -q '^packages/'; then
              SERVICES_LIST=("server" "dashboard" "workflows" "private-location" "status-page" "checker")
            else
              for svc in server dashboard workflows private-location status-page checker; do
                if echo "$CHANGED" | grep -q "^apps/$svc/"; then
                  SERVICES_LIST+=("$svc")
                fi
              done
            fi

            SERVICES=$(printf '%s\n' "${SERVICES_LIST[@]}" | jq -R . | jq -sc .)
          fi

          echo "services=$SERVICES" >> "$GITHUB_OUTPUT"
          echo "Building services: $SERVICES"

  build-and-push:
    runs-on: ubuntu-latest
    needs: [prepare]
    if: needs.prepare.outputs.services != '[]'
    timeout-minutes: 30
    permissions:
      contents: read
      id-token: write
      packages: write

    strategy:
      fail-fast: false
      matrix:
        service: ${{ fromJson(needs.prepare.outputs.services) }}
        include:
          - service: server
            context: .
            dockerfile: apps/server/Dockerfile
          - service: dashboard
            context: .
            dockerfile: apps/dashboard/Dockerfile
          - service: workflows
            context: .
            dockerfile: apps/workflows/Dockerfile
          - service: private-location
            context: apps/private-location
            dockerfile: apps/private-location/Dockerfile
          - service: status-page
            context: .
            dockerfile: apps/status-page/Dockerfile
          - service: checker
            context: apps/checker
            dockerfile: apps/checker/Dockerfile

    steps:
      - name: Checkout repository
        uses: actions/checkout@v6

      - name: Lowercase owner
        run: echo "OWNER_LC=${GITHUB_REPOSITORY_OWNER,,}" >> $GITHUB_ENV

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Log in to Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.OWNER_LC }}/${{ env.IMAGE_NAME }}-${{ matrix.service }}
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=sha,prefix=
            type=raw,value=latest,enable={{is_default_branch}}

      - name: Build and push Docker image
        id: build
        uses: docker/build-push-action@v6
        with:
          context: ${{ matrix.context }}
          file: ${{ matrix.dockerfile }}
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          platforms: linux/amd64,linux/arm64
          cache-from: type=gha
          cache-to: type=gha,mode=max
          provenance: false

      - name: Generate SBOM
        uses: anchore/sbom-action@v0
        with:
          image: ${{ env.REGISTRY }}/${{ env.OWNER_LC }}/${{ env.IMAGE_NAME }}-${{ matrix.service }}@${{ steps.build.outputs.digest }}
          format: spdx-json
          output-file: sbom-${{ matrix.service }}.spdx.json

      - name: Upload SBOM
        uses: actions/upload-artifact@v4
        with:
          name: sbom-${{ matrix.service }}
          path: sbom-${{ matrix.service }}.spdx.json
          retention-days: 30