cmake_minimum_required(VERSION 3.28)
project(FluidSimCpp VERSION 0.1.0 LANGUAGES CXX)

option(FLUIDSIM_BUILD_DESKTOP "Build the SFML windowed simulator with keyboard controls and audio" ON)

add_library(fluidsim_core
    src/engine.cpp
    src/crankcase.cpp
    src/two_stroke_cylinder.cpp
    src/two_stroke_scenario.cpp
    src/helmholtz_scenario.cpp
    src/pulse_test_scenario.cpp
    src/audio_processing.cpp
    src/outdoor_exhaust_reverb.cpp
    src/mechanical_sound_processor.cpp
    src/scenario.cpp
    src/solver.cpp
    src/vehicle.cpp
    src/simulation_ring_buffer.cpp
)
target_include_directories(fluidsim_core PUBLIC include)
target_compile_features(fluidsim_core PUBLIC cxx_std_20)

add_executable(fluidsim_cpp src/main.cpp)
target_link_libraries(fluidsim_cpp PRIVATE fluidsim_core)

add_executable(fluidsim_parity_trace tools/parity_trace.cpp)
target_link_libraries(fluidsim_parity_trace PRIVATE fluidsim_core)

if(FLUIDSIM_BUILD_DESKTOP)
    find_package(SFML 3.0.2 COMPONENTS Graphics Audio QUIET)
    if(NOT SFML_FOUND)
        include(FetchContent)
        set(SFML_BUILD_AUDIO ON CACHE BOOL "" FORCE)
        set(SFML_BUILD_GRAPHICS ON CACHE BOOL "" FORCE)
        set(SFML_BUILD_WINDOW ON CACHE BOOL "" FORCE)
        set(SFML_BUILD_NETWORK OFF CACHE BOOL "" FORCE)
        set(SFML_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
        set(SFML_BUILD_TEST_SUITE OFF CACHE BOOL "" FORCE)
        set(BUILD_SHARED_LIBS OFF CACHE BOOL "" FORCE)
        FetchContent_Declare(SFML
            GIT_REPOSITORY https://github.com/SFML/SFML.git
            GIT_TAG 3.0.2
            GIT_SHALLOW TRUE
            EXCLUDE_FROM_ALL
            SYSTEM
        )
        FetchContent_MakeAvailable(SFML)
    endif()
    add_executable(fluidsim_desktop src/desktop_main.cpp src/audio_output_stream.cpp src/sound_engine.cpp)
    target_link_libraries(fluidsim_desktop PRIVATE fluidsim_core SFML::Graphics SFML::Audio)
    if(MSVC)
        target_compile_options(fluidsim_desktop PRIVATE /W4 /permissive-)
    else()
        target_compile_options(fluidsim_desktop PRIVATE -Wall -Wextra -Wpedantic)
    endif()
    file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/../fonts" DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")
endif()

if(MSVC)
    target_compile_options(fluidsim_core PRIVATE /W4 /permissive-)
    target_compile_options(fluidsim_cpp PRIVATE /W4 /permissive-)
    target_compile_options(fluidsim_parity_trace PRIVATE /W4 /permissive-)
else()
    target_compile_options(fluidsim_core PRIVATE -Wall -Wextra -Wpedantic)
    target_compile_options(fluidsim_cpp PRIVATE -Wall -Wextra -Wpedantic)
    target_compile_options(fluidsim_parity_trace PRIVATE -Wall -Wextra -Wpedantic)
endif()

include(CTest)
if(BUILD_TESTING)
    add_executable(fluidsim_physics_tests tests/physics_tests.cpp)
    target_link_libraries(fluidsim_physics_tests PRIVATE fluidsim_core)
    add_test(NAME fluidsim_physics_tests COMMAND fluidsim_physics_tests)
endif()