cmake_minimum_required(VERSION 3.26)
project(VoxelEngine)

option(VOXELENGINE_BUILD_APPDIR "" OFF)
option(VOXELENGINE_BUILD_TESTS "" OFF)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

if(CMAKE_SYSTEM_NAME STREQUAL "Windows")
    # We use two types linking: for clang build is static (vcpkg triplet
    # x64-windows-static) and for msvc build is dynamic linking (vcpkg triplet
    # x64-windows) By default CMAKE_MSVC_RUNTIME_LIBRARY set by
    # MultiThreaded$<$<CONFIG:Debug>:Debug>DLL
    if(VCPKG_TARGET_TRIPLET MATCHES "static")
        set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
    endif()
endif()

add_subdirectory(src)
add_executable(${PROJECT_NAME} src/main.cpp)
target_include_directories(${PROJECT_NAME}
                           PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/src)

if(VOXELENGINE_BUILD_APPDIR)
    include(${CMAKE_CURRENT_SOURCE_DIR}/dev/cmake/BuildAppdir.cmake)
endif()

if(MSVC)
    if(NOT CMAKE_BUILD_TYPE)
        set(CMAKE_BUILD_TYPE
            Release
            CACHE STRING "Build type" FORCE)
    endif()
    if((CMAKE_BUILD_TYPE EQUAL "Release") OR (CMAKE_BUILD_TYPE EQUAL
                                              "RelWithDebInfo"))
        target_compile_options(${PROJECT_NAME} PRIVATE /W4 /MT /O2)
    else()
        target_compile_options(${PROJECT_NAME} PRIVATE /W4)
    endif()
    set(CMAKE_CXX_FLAGS
        "${CMAKE_CXX_FLAGS} /source-charset:UTF-8 /D_DISABLE_CONSTEXPR_MUTEX_CONSTRUCTOR"
    )
else()
    target_compile_options(
        ${PROJECT_NAME}
        PRIVATE -Wall
                -Wextra
                # additional warnings
                -Wformat-nonliteral
                -Wcast-align
                -Wpointer-arith
                -Wundef
                -Wwrite-strings
                -Wno-unused-parameter)
    if(CMAKE_BUILD_TYPE MATCHES "Debug")
        target_compile_options(${PROJECT_NAME} PRIVATE -Og)
    endif()
    if(WIN32)
        set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static")
    endif()
endif()

if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -no-pie -lstdc++fs")
endif()

if(WIN32)
    target_link_libraries(${PROJECT_NAME} VoxelEngineSrc winmm)
endif()

target_link_libraries(${PROJECT_NAME} VoxelEngineSrc ${CMAKE_DL_LIBS})

# Deploy res to build dir
add_custom_command(
    TARGET ${PROJECT_NAME}
    POST_BUILD
    COMMAND
        ${CMAKE_COMMAND} -E copy_directory_if_different
        ${CMAKE_CURRENT_SOURCE_DIR}/res $<TARGET_FILE_DIR:${PROJECT_NAME}>/res)

if(VOXELENGINE_BUILD_TESTS)
    enable_testing()
    add_subdirectory(test)
endif()

add_subdirectory(vctest)
