code-coverage.yml

name: Code Coverage

on:
  pull_request:
    paths:
      - '**/*.rs'
      - '!LICENSE'
      - '!README.md'
      - '!**/*.md'

jobs:
  code-coverage:
    runs-on: ubuntu-latest
    if: ${{ github.event_name == 'pull_request' }}

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Cache Rust dependencies
        uses: actions/cache@v4
        with:
          # Directories to cache
          path: |
            ~/.cargo/registry
            ~/.cargo/bin
            target
          # Key based on OS and Cargo.lock hash
          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
          # Fallback keys
          restore-keys: |
            ${{ runner.os }}-cargo-

      - name: Set up Rust
        run: |
          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
          source $HOME/.cargo/env
          rustup default stable

      - name: Install cargo-tarpaulin if not cached
        run: |
          if ! command -v cargo-tarpaulin &> /dev/null; then
            echo "cargo-tarpaulin not found, installing..."
            cargo install cargo-tarpaulin
          else
            echo "cargo-tarpaulin is cached."
          fi

      - name: Install protoc (Protocol Buffers compiler)
        run: |
          sudo apt-get update
          sudo apt-get install -y protobuf-compiler

      - name: Install coveralls
        run: |
          curl -L https://coveralls.io/coveralls-linux.tar.gz | sudo tar -xz -C /usr/local/bin

      - name: Run code coverage using external script
          # Define repo level variable
        env:
          COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
          SKIP_CRATE: ${{ vars.SKIP_CRATE }}
        run: |
          chmod u+x scripts/run_coverage.sh
          ./scripts/run_coverage.sh