name: CMake Build

on:
  workflow_dispatch:
    inputs:
      install_prefix:
        description: 'CMake install prefix (relative to workspace)'
        default: 'install'
        required: true
      build_type:
        description: 'CMake build type'
        default: 'Release'
        required: true
      run_install_only:
        description: 'Run only install step'
        default: 'false'
        required: true

  push:
    branches:
      - cmake
      - test_dev

  pull_request:
    branches:
      - cmake
      - test_dev

env:
  BUILD_TYPE: Release
  INSTALL_PREFIX: ${{ github.workspace }}/install
  RUN_INSTALL_ONLY: false

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

      - name: Set up dependencies
        run: |
          sudo apt update
          sudo apt install -y \
            cmake \
            build-essential \
            gfortran \
            mpich \
            libmpich-dev \
            libopenblas-dev \
            liblapack-dev

      - name: Check MPI installation
        run: |
          mpicc --version
          mpifort --version
          which mpicc
          which mpifort

      - name: Configure and Build
        if: ${{ env.RUN_INSTALL_ONLY != 'true' }}
        run: |
          # Export MPI compilers
          export CC=mpicc
          export CXX=mpicxx
          export FC=mpifort
          export F77=mpifort

          # Configure CMake
          cmake -S . -B build \
            -DCMAKE_BUILD_TYPE=$BUILD_TYPE \
            -DCMAKE_INSTALL_PREFIX=$INSTALL_PREFIX \
            -DCMAKE_Fortran_COMPILER=$FC \
            -DCMAKE_C_COMPILER=$CC \
            -DMPI_C_COMPILER=$CC \
            -DMPI_Fortran_COMPILER=$FC \
            -DMPI_Fortran_INCLUDE_DIR=$MPI_Fortran_INCLUDE_DIR

          # Build
          cmake --build build -- -j$(nproc)