---
# dance-lessons-coach Docker Push Workflow
# Separate workflow for Docker image building and pushing
# Can be triggered manually or by CI/CD workflow

name: Docker Push

on:
  # Manual trigger for testing or production
  workflow_dispatch:
    inputs:
      ref:
        description: 'Git reference (branch/tag)'
        required: false
        type: string
        default: ''

# Environment variables
env:
  GITEA_INTERNAL: "https://gitea.arcodange.lab/"
  GITEA_EXTERNAL: "https://gitea.arcodange.fr/"
  GITEA_ORG: "arcodange"
  GITEA_REPO: "dance-lessons-coach"
  CI_REGISTRY: "gitea.arcodange.lab"

jobs:
  docker-push:
    name: Docker Push
    runs-on: ubuntu-latest-ca
    
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.inputs.ref || github.ref }}

      - name: Login to Gitea Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.CI_REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.PACKAGES_TOKEN }}

      - name: Calculate dependency hash
        id: calc_hash
        run: |
          # Calculate dependency hash (same method as build-cache job)
          DEPS_HASH=$(sha256sum go.mod go.sum docker/Dockerfile.build | sha256sum | cut -d' ' -f1 | head -c 12)
          echo "Dependency hash: $DEPS_HASH"
          echo "deps_hash=$DEPS_HASH" >> $GITHUB_OUTPUT

      - name: Restore Swagger Docs Cache
        id: cache-swagger-restore
        uses: actions/cache/restore@v5
        with:
          path: |
            pkg/server/docs/docs.go
            pkg/server/docs/swagger.json
            pkg/server/docs/swagger.yaml
          key: swagger-docs-${{ hashFiles('cmd/server/main.go', 'pkg/greet/*.go', 'pkg/server/*.go', 'go.mod') }}
          restore-keys: |
            swagger-docs-

      - name: Generate Swagger Docs if needed
        if: steps.cache-swagger-restore.outputs.cache-hit != 'true'
        run: >
          docker run --rm 
          -v ${GITHUB_WORKSPACE}:/build 
          gitea.arcodange.lab/arcodange/dance-lessons-coach-build-cache:${{ steps.calc_hash.outputs.deps_hash }} 
          go generate ./pkg/server
      
      - name: Save Swagger Docs Cache
        if: steps.cache-swagger-restore.outputs.cache-hit != 'true'
        id: cache-swagger-save
        uses: actions/cache/save@v5
        with:
          path: |
            pkg/server/docs/docs.go
            pkg/server/docs/swagger.json
            pkg/server/docs/swagger.yaml
          key: ${{ steps.cache-swagger-restore.outputs.cache-primary-key }}

      - name: Build and push Docker image
        run: |
          source VERSION
          IMAGE_VERSION="$MAJOR.$MINOR.$PATCH${PRERELEASE:+-$PRERELEASE}"
          
          # Use the calculated dependency hash and set it as environment variable
          DEPS_HASH="${{ steps.calc_hash.outputs.deps_hash }}"
          echo "Using dependency hash: $DEPS_HASH"
          echo "DEPS_HASH=$DEPS_HASH" >> $GITHUB_ENV
          
          TAGS="$IMAGE_VERSION latest ${{ github.sha }}"
          echo "Building Docker image with tags: $TAGS"
          
          # Build the production image using inline version with prebuilt cache image
          # Fixed: Use $GITHUB_ENV variable in the inline Dockerfile
          docker build -t dance-lessons-coach -f - --build-arg DEPS_HASH . <<EOF
          # dance-lessons-coach Production Docker Image
          # Inline Dockerfile using prebuilt cache image
          
          # Use the build cache image as base
          ARG DEPS_HASH
          FROM gitea.arcodange.lab/arcodange/dance-lessons-coach-build-cache:${DEPS_HASH} AS builder
          
          # Copy source code to the correct working directory
          COPY . /workspace
          
          # Set working directory and build the binary
          WORKDIR /workspace
          RUN go build -o dance-lessons-coach ./cmd/server
          
          # Final minimal image
          FROM alpine:3.18
          
          WORKDIR /app
          
          # Install minimal dependencies
          RUN apk add --no-cache ca-certificates tzdata
          
          # Copy binary from builder
          COPY --from=builder /workspace/dance-lessons-coach /app/dance-lessons-coach
          
          # Copy configuration
          COPY config.yaml /app/config.yaml
          
          # Set permissions
          RUN chmod +x /app/dance-lessons-coach
          
          # Set timezone
          ENV TZ=UTC
          
          # Expose port
          EXPOSE 8080
          
          # Health check
          HEALTHCHECK --interval=30s --timeout=3s \
              CMD wget -q --spider http://localhost:8080/api/health || exit 1
          
          # Entry point
          ENTRYPOINT ["/app/dance-lessons-coach"]
          EOF
          
          for TAG in $TAGS; do
            IMAGE_NAME="${{ env.CI_REGISTRY }}/${{ env.GITEA_ORG }}/${{ env.GITEA_REPO }}:$TAG"
            echo "Tagging and pushing: $IMAGE_NAME"
            docker tag dance-lessons-coach "$IMAGE_NAME"
            docker push "$IMAGE_NAME"
          done

      - name: Show published images
        run: |
          source VERSION
          IMAGE_VERSION="$MAJOR.$MINOR.$PATCH${PRERELEASE:+-$PRERELEASE}"
          echo "📦 Published Docker images:"
          echo "  - ${{ env.CI_REGISTRY }}/${{ env.GITEA_ORG }}/${{ env.GITEA_REPO }}:$IMAGE_VERSION"
          echo "  - ${{ env.CI_REGISTRY }}/${{ env.GITEA_ORG }}/${{ env.GITEA_REPO }}:latest"
          echo "  - ${{ env.CI_REGISTRY }}/${{ env.GITEA_ORG }}/${{ env.GITEA_REPO }}:${{ github.sha }}"