name: CI Pipeline

on:
  push:
    branches:
      - main
    tags:
      - 'v*'
  pull_request:
    branches:
      - main

env:
  REGISTRY: ${{ vars.REGISTRY_URL }}
  IMAGE_NAME: enterprise-openldap

jobs:
  # Stage 1: Lint Dockerfile
  lint:
    runs-on: docker
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Lint Dockerfile with hadolint
        run: |
          docker run --rm -i hadolint/hadolint < Dockerfile || {
            echo "::warning::Dockerfile linting found issues (non-blocking)"
          }

  # Stage 2: Build image
  build:
    runs-on: docker
    needs: lint
    outputs:
      image_tag: ${{ steps.version.outputs.VERSION }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Determine version tag
        id: version
        run: |
          if [[ "$GITHUB_REF" == refs/tags/v* ]]; then
            VERSION="${GITHUB_REF#refs/tags/v}"
          else
            VERSION="$(echo "$GITHUB_SHA" | cut -c1-7)"
          fi
          echo "VERSION=$VERSION" >> $GITHUB_OUTPUT
          echo "Building version: $VERSION"

      - name: Build Docker image
        run: |
          docker build -t ${{ env.IMAGE_NAME }}:${{ steps.version.outputs.VERSION }} .
          docker tag ${{ env.IMAGE_NAME }}:${{ steps.version.outputs.VERSION }} ${{ env.IMAGE_NAME }}:test

      - name: Save image for subsequent jobs
        run: |
          mkdir -p /tmp/images
          docker save ${{ env.IMAGE_NAME }}:test -o /tmp/images/image.tar

      - name: Upload image artifact
        uses: actions/upload-artifact@v4
        with:
          name: docker-image
          path: /tmp/images/image.tar
          retention-days: 1

  # Stage 3: Integration tests
  test:
    runs-on: docker
    needs: build
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Download image artifact
        uses: actions/download-artifact@v4
        with:
          name: docker-image
          path: /tmp/images

      - name: Load Docker image
        run: |
          docker load -i /tmp/images/image.tar

      - name: Run integration tests
        run: |
          chmod +x tests/test-container.sh
          ./tests/test-container.sh
        env:
          IMAGE_NAME: ${{ env.IMAGE_NAME }}:test
          CONTAINER_NAME: openldap-ci-test

  # Stage 4: Security scan
  security-scan:
    runs-on: docker
    needs: build
    steps:
      - name: Download image artifact
        uses: actions/download-artifact@v4
        with:
          name: docker-image
          path: /tmp/images

      - name: Load Docker image
        run: |
          docker load -i /tmp/images/image.tar

      - name: Scan image with Trivy
        run: |
          docker run --rm \
            -v /var/run/docker.sock:/var/run/docker.sock \
            aquasec/trivy:latest image \
            --severity HIGH,CRITICAL \
            --exit-code 0 \
            --no-progress \
            ${{ env.IMAGE_NAME }}:test

      - name: Scan for critical vulnerabilities (blocking)
        run: |
          docker run --rm \
            -v /var/run/docker.sock:/var/run/docker.sock \
            aquasec/trivy:latest image \
            --severity CRITICAL \
            --exit-code 1 \
            --no-progress \
            --ignore-unfixed \
            ${{ env.IMAGE_NAME }}:test || {
              echo "::error::Critical vulnerabilities found!"
              exit 1
            }

  # Stage 5: Push to registry
  push:
    runs-on: docker
    needs: [test, security-scan]
    if: github.event_name != 'pull_request'
    outputs:
      version: ${{ steps.version.outputs.VERSION }}
      full_image: ${{ steps.version.outputs.FULL_IMAGE }}
    steps:
      - name: Download image artifact
        uses: actions/download-artifact@v4
        with:
          name: docker-image
          path: /tmp/images

      - name: Load Docker image
        run: |
          docker load -i /tmp/images/image.tar

      - name: Determine version and tags
        id: version
        run: |
          if [[ "$GITHUB_REF" == refs/tags/v* ]]; then
            VERSION="${GITHUB_REF#refs/tags/v}"
            # For releases, tag with version, major.minor, and latest
            MAJOR=$(echo $VERSION | cut -d. -f1)
            MINOR=$(echo $VERSION | cut -d. -f2)
            TAGS="${VERSION},${MAJOR}.${MINOR},latest"
          else
            VERSION="$(echo "$GITHUB_SHA" | cut -c1-7)"
            TAGS="${VERSION},latest"
          fi
          echo "VERSION=$VERSION" >> $GITHUB_OUTPUT
          echo "TAGS=$TAGS" >> $GITHUB_OUTPUT
          echo "FULL_IMAGE=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${VERSION}" >> $GITHUB_OUTPUT

      - name: Log in to Docker Registry
        run: |
          echo "${{ secrets.REGISTRY_PASSWORD }}" | docker login ${{ env.REGISTRY }} -u "${{ secrets.REGISTRY_USERNAME }}" --password-stdin

      - name: Tag and push images
        run: |
          IFS=',' read -ra TAGS <<< "${{ steps.version.outputs.TAGS }}"
          for TAG in "${TAGS[@]}"; do
            docker tag ${{ env.IMAGE_NAME }}:test ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:$TAG
            docker push ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:$TAG
            echo "Pushed: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:$TAG"
          done

      - name: Logout from registry
        if: always()
        run: docker logout ${{ env.REGISTRY }} || true

  # Stage 6: Update CD pipeline (trigger deployment)
  update-cd:
    runs-on: docker
    needs: push
    if: github.event_name != 'pull_request' && startsWith(github.ref, 'refs/tags/v')
    steps:
      - name: Trigger CD pipeline
        run: |
          echo "=============================================="
          echo "  Ready to update CD pipeline"
          echo "=============================================="
          echo "New version: ${{ needs.push.outputs.version }}"
          echo "Full image:  ${{ needs.push.outputs.full_image }}"
          echo ""
          echo "TODO: Add step to update version in CD repository"
          echo "This could be:"
          echo "  - Update docker-compose.yml in infra repo"
          echo "  - Update Helm values"
          echo "  - Trigger ArgoCD sync"
          echo "=============================================="