name: C
on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main

defaults:
  run:
    shell: bash
    working-directory: src

jobs:
  tests:
    runs-on: ${{matrix.os}}
    strategy:
      matrix:
        os:
          - ubuntu-latest
          - macos-latest
          - windows-latest
    steps:
      # Checkout repository and blst submodule.
      - uses: actions/checkout@v3
        with:
          submodules: recursive

      # Check formatting.
      # Only need to check this once.
      - name: Check formatting
        if: matrix.os == 'ubuntu-latest'
        run: |
          make format
          git diff --exit-code

      # Build and test with minimal preset.
      - name: Build (minimal)
        run: |
          export FIELD_ELEMENTS_PER_BLOB=4
          make clean && make test_c_kzg_4844
          unset FIELD_ELEMENTS_PER_BLOB
      - name: Save test binary (minimal)
        if: matrix.os == 'windows-latest'
        uses: actions/upload-artifact@v3
        with:
          name: test_minimal_${{matrix.os}}
          path: src/test_c_kzg_4844.exe
      - name: Test (minimal)
        run: make test

      # Build and test with mainnet preset.
      - name: Build (mainnet)
        run: |
          export FIELD_ELEMENTS_PER_BLOB=4096
          make clean && make test_c_kzg_4844
          unset FIELD_ELEMENTS_PER_BLOB
      - name: Save test binary (mainnet)
        if: matrix.os == 'windows-latest'
        uses: actions/upload-artifact@v3
        with:
          name: test_mainnet_${{matrix.os}}
          path: src/test_c_kzg_4844.exe
      - name: Test (mainnet)
        run: make test

      # Run sanitizers.
      # Doesn't work on Windows.
      - name: Clang Sanitizers
        if: matrix.os != 'windows-latest'
        run: make sanitize

      # Run static analyzer.
      # Doesn't work on Windows.
      - name: Clang Static Analyzer
        if: matrix.os != 'windows-latest'
        run: make analyze

      # Install LLVM for coverage report.
      # Already installed on macOS.
      # Doesn't work on Windows.
      - name: Install LLVM
        if: matrix.os == 'ubuntu-latest'
        uses: egor-tensin/setup-clang@v1

      # Generate the coverage report.
      # Doesn't work on Windows.
      - name: Generate coverage report
        if: matrix.os != 'windows-latest'
        run: make coverage

      # Upload the coverage report.
      # Didn't generate it for Windows.
      - name: Save coverage report
        if: matrix.os != 'windows-latest'
        uses: actions/upload-artifact@v3
        with:
          name: coverage
          path: src/coverage.html