name: CI

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]
  schedule:
    - cron: "0 6 * * 1"

jobs:
  build-and-scan:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v7
        with:
          fetch-depth: 0

      - name: Build Docker image
        run: |
          docker build -t adguard-cidre:ci . 2>&1 | tee build.log
          if grep -q "Building wheel for" build.log; then
            echo "::warning::A dependency was built from source — check Python/Alpine compatibility"
          fi

      - name: Smoke test (syntax check)
        run: |
          docker run --rm --entrypoint python adguard-cidre:ci -c "
          import ast
          with open('blocklist_scheduler.py') as f:
              source = f.read()
          try:
              ast.parse(source)
              print('OK: syntax is valid')
          except SyntaxError as e:
              print(f'::error::Syntax error: {e}')
              exit(1)
          "

      - name: Run unit tests
        run: |
          docker build --target test -t adguard-cidre:test .
          docker run --rm adguard-cidre:test pytest -v

      - name: Check deprecation warnings
        run: |
          docker run --rm --entrypoint python adguard-cidre:ci -W error::DeprecationWarning -c "import blocklist_scheduler" 2>&1 | tee deprecation.log || true
          if grep -qi "deprecat" deprecation.log; then
            echo "::warning::Deprecation warning detected, check logs"
          fi

      - name: Scan with Trivy (critical - blocking)
        run: |
          docker run --rm \
            -e DOCKER_HOST=tcp://dockerhost:2375 \
            --add-host=dockerhost:host-gateway \
            aquasec/trivy:0.74.0 image --exit-code 1 --severity CRITICAL adguard-cidre:ci

      - name: Scan with Trivy (high - informative)
        run: |
          docker run --rm \
            -e DOCKER_HOST=tcp://dockerhost:2375 \
            --add-host=dockerhost:host-gateway \
            aquasec/trivy:0.74.0 image --exit-code 0 --severity HIGH adguard-cidre:ci

      - name: Publish tagged image
        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
        run: |
          BEFORE="${{ github.event.before }}"
          if [ -n "$BEFORE" ] && [ "$BEFORE" != "0000000000000000000000000000000000000000" ] && git cat-file -e "$BEFORE" 2>/dev/null; then
            CHANGED=$(git diff --name-only "$BEFORE" "${{ github.sha }}")
          else
            CHANGED=$(git diff --name-only HEAD~1 HEAD)
          fi
          echo "Changed files:"
          echo "$CHANGED"

          if ! echo "$CHANGED" | grep -qE '^(Dockerfile|blocklist_scheduler\.py|VERSION)$'; then
            echo "No container-relevant file changed, skipping publish."
            exit 0
          fi

          if echo "$CHANGED" | grep -qE '^VERSION$'; then
            echo "VERSION was manually edited in this push, using it as-is."
          else
            echo "VERSION untouched but container files changed, auto-bumping the build number (Z)."
            OLD_VERSION=$(tr -d '[:space:]' < VERSION)
            IFS='.' read -r MAJOR MINOR PATCH <<< "$OLD_VERSION"
            NEW_VERSION="${MAJOR}.${MINOR}.$((PATCH + 1))"
            echo "$NEW_VERSION" > VERSION

            git config user.name "adguard-cidre-ci"
            git config user.email "ci@git.djeex.fr"
            git add VERSION
            git commit -m "Bump build version to $NEW_VERSION [skip ci]"

            git push "https://Djeex:${{ secrets.CI_PUSH_TOKEN }}@git.djeex.fr/Djeex/adguard-cidre.git" HEAD:main
          fi

          VERSION=$(tr -d '[:space:]' < VERSION)
          IFS='.' read -r MAJOR MINOR PATCH <<< "$VERSION"
          MINOR_TAG="${MAJOR}.${MINOR}"

          IMAGE=git.djeex.fr/djeex/adguard-cidre
          echo "${{ secrets.REGISTRY_TOKEN }}" | docker login git.djeex.fr -u Djeex --password-stdin

          # Retag the already-built, already-scanned image — never rebuild for publish,
          # so what ships is byte-for-byte what Trivy just scanned.
          docker tag adguard-cidre:ci "$IMAGE:latest"
          docker tag adguard-cidre:ci "$IMAGE:$MINOR_TAG"
          docker tag adguard-cidre:ci "$IMAGE:$VERSION"
          docker push "$IMAGE:latest"
          docker push "$IMAGE:$MINOR_TAG"
          docker push "$IMAGE:$VERSION"