name: Rust CI
on:
  push:
    branches: [main]
    paths:
      - 'veza-stream-server/**'
  pull_request:
    branches: [main]
    paths:
      - 'veza-stream-server/**'

jobs:
  test-and-lint:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
      - uses: dtolnay/rust-toolchain@631a55b12751854ce901bb631d5902ceb48146f7 # stable
        with:
          components: clippy

      - name: Clippy lint
        run: cargo clippy -- -D warnings
        working-directory: veza-stream-server

      - name: Run tests
        run: cargo test --workspace --timeout 300
        working-directory: veza-stream-server

      - name: Install cargo-tarpaulin
        run: cargo install cargo-tarpaulin

      - name: Measure coverage
        run: cargo tarpaulin --out json --output-dir target/coverage --timeout 300 --skip-clean
        working-directory: veza-stream-server

      - name: Enforce coverage threshold (>= 50%)
        run: |
          COVERAGE=$(cat target/coverage/tarpaulin-report.json | python3 -c "import sys,json; print(f'{json.load(sys.stdin).get(\"coverage\", 0):.1f}')")
          echo "Rust coverage: ${COVERAGE}%"
          COV_INT=$(echo "$COVERAGE" | cut -d. -f1)
          if [ "$COV_INT" -lt 50 ]; then
            echo "::error::Rust coverage ${COVERAGE}% is below the 50% threshold"
            exit 1
          fi
          echo "::notice::Rust coverage ${COVERAGE}% meets the >= 50% threshold"
        working-directory: veza-stream-server

      - name: Upload coverage report
        uses: actions/upload-artifact@65c4c4a1ddee5b72f698fdd19549f0f0fb45cf08 # v4.6.0
        with:
          name: rust-coverage
          path: veza-stream-server/target/coverage/tarpaulin-report.json