name: Coverage

'on':
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]
  workflow_dispatch:
    inputs:
      fail_threshold:
        description: 'Minimum coverage percentage (0 to disable)'
        required: false
        default: '80'

jobs:
  rust-coverage:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Rust toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          toolchain: stable
          components: llvm-tools-preview

      - name: Install cargo-llvm-cov
        run: cargo install cargo-llvm-cov --locked

      - name: Generate coverage
        working-directory: ./red
        run: |
          # Determine threshold: use input for workflow_dispatch, otherwise default to 80
          if [ "${{ github.event_name }}" == "workflow_dispatch" ]; then
            THRESHOLD="${{ github.event.inputs.fail_threshold }}"
          else
            THRESHOLD="80"
          fi

          echo "========================================"
          echo "  Coverage threshold: ${THRESHOLD}%"
          echo "========================================"

          # Run coverage with threshold
          if [ "$THRESHOLD" != "0" ] && [ -n "$THRESHOLD" ]; then
            bash scripts/coverage.sh --fail-under "$THRESHOLD"
          else
            bash scripts/coverage.sh
          fi

      - name: Show coverage summary
        if: always()
        working-directory: ./red
        run: |
          echo ""
          echo "========================================"
          echo "        COVERAGE STATISTICS"
          echo "========================================"
          echo ""
          cargo llvm-cov report --ignore-filename-regex ".*/\.cargo/registry/.*|.*/rustc/.*|.*/target/.*"
          echo ""
          echo "========================================"

      - name: Upload lcov artifact
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: lcov.info
          path: red/coverage/lcov.info