name: CI

on:
  push:
    branches: [ main, develop ]
  pull_request:
    branches: [ main, develop ]

jobs:
  build-and-test:
    name: Build and Test
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest]
        include:
          - os: ubuntu-latest
            cc: gcc
            cxx: g++

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

    - name: Setup Python
      uses: actions/setup-python@v4
      with:
        python-version: '3.x'

    - name: Install Meson and Ninja
      run: |
        python -m pip install --upgrade pip
        pip install meson ninja

    - name: Install dependencies (Ubuntu)
      if: matrix.os == 'ubuntu-latest'
      run: |
        sudo apt-get update
        sudo apt-get install -y libboost-system-dev libgtest-dev libgmock-dev build-essential

    - name: Setup build directory
      run: |
        meson setup builddir
      env:
        CC: ${{ matrix.cc }}
        CXX: ${{ matrix.cxx }}

    - name: Compile
      run: |
        meson compile -C builddir

    - name: Run tests
      run: |
        meson test -C builddir --verbose

    - name: Upload test results
      uses: actions/upload-artifact@v4
      if: always()
      with:
        name: test-results-${{ matrix.os }}
        path: builddir/meson-logs/

  coverage:
    name: Code Coverage
    runs-on: ubuntu-latest
    needs: build-and-test

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

    - name: Setup Python
      uses: actions/setup-python@v4
      with:
        python-version: '3.x'

    - name: Install Meson and Ninja
      run: |
        python -m pip install --upgrade pip
        pip install meson ninja

    - name: Install dependencies and coverage tools
      run: |
        sudo apt-get update
        sudo apt-get install -y libboost-system-dev libgtest-dev libgmock-dev build-essential lcov

    - name: Setup build directory with coverage
      run: |
        meson setup builddir -Db_coverage=true
      env:
        CC: gcc
        CXX: g++

    - name: Compile with coverage
      run: |
        meson compile -C builddir

    - name: Run tests with coverage
      run: |
        meson test -C builddir --verbose

    - name: Generate coverage report
      run: |
        # Create coverage directory
        mkdir -p coverage
        
        # Capture coverage data
        lcov --capture --directory builddir --output-file coverage/coverage.info --ignore-errors mismatch,mismatch,unused
        
        # Remove system headers and test files from coverage
        lcov --remove coverage/coverage.info '/usr/*' '*/test_*' '*/gtest/*' --output-file coverage/coverage_filtered.info --ignore-errors mismatch,mismatch,unused
        
        # Generate HTML report
        genhtml coverage/coverage_filtered.info --output-directory coverage/html 
        
        # Display coverage summary
        lcov --summary coverage/coverage_filtered.info --ignore-errors mismatch,mismatch,unused

    - name: Upload coverage reports to Codecov
      uses: codecov/codecov-action@v3
      with:
        file: coverage/coverage_filtered.info
        flags: unittests
        name: codecov-umbrella
        fail_ci_if_error: false

    - name: Upload coverage HTML report
      uses: actions/upload-artifact@v4
      with:
        name: coverage-report
        path: coverage/html/

    - name: Coverage Summary
      run: |
        echo "## Coverage Report" >> $GITHUB_STEP_SUMMARY
        echo "Coverage data has been uploaded to Codecov and HTML report is available as an artifact." >> $GITHUB_STEP_SUMMARY
        lcov --summary coverage/coverage_filtered.info >> $GITHUB_STEP_SUMMARY