cmake_minimum_required(VERSION 3.5)
project(arona_core)

function(retrieve_files out_files)
    set(source_list)

    # 递归查找文件夹下的 .h .hpp. ini 文件保存到 HEAD_FILES
    file(GLOB_RECURSE HEAD_FILES RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} CONFIGURE_DEPENDS *.h *.hpp *.ini) 

    # 递归查找文件夹下的 *.cpp *.c 文件保存到 SRC_FILES
    file(GLOB_RECURSE SRC_FILES RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} CONFIGURE_DEPENDS *.cpp *.c)

    # 将 HEDADER_FILES 和 SRC_FILES 保存到 ALL_FILES 变量
    set(ALL_FILES ${HEAD_FILES} ${SRC_FILES})

    set(RESULT "")

    # 对 ALL_FILES 变量里面的所有文件分类(保留资源管理器的目录结构)
    foreach(fileItem ${ALL_FILES})
        # Get the directory of the source file
        get_filename_component(PARENT_DIR "${fileItem}" DIRECTORY)

        # 用于检查平台的条件
        if(PARENT_DIR STREQUAL "windows")
            if(WIN32)
                set(RESULT "${RESULT};${fileItem}")
            else()
                continue()
            endif()
        elseif(PARENT_DIR STREQUAL "linux")
            if(UNIX AND NOT APPLE)
                set(RESULT "${RESULT};${fileItem}")
            else()
                continue()
            endif()
        elseif(PARENT_DIR STREQUAL "mac")
            if(APPLE)
                set(RESULT "${RESULT};${fileItem}")
            else()
                continue()
            endif()
        else()
            # 如果文件夹名称不是平台，则始终包含
            set(RESULT "${RESULT};${fileItem}")
        endif()
        
        # Remove common directory prefix to make the group
        string(REPLACE "${CMAKE_CURRENT_SOURCE_DIR}" "" GROUP "${PARENT_DIR}")
        # Make sure we are using windows slashes
        string(REPLACE "/" "\\" GROUP "${GROUP}")
        # Group into "Source Files" and "Header Files"
        set(GROUP "${GROUP}")
        source_group("${GROUP}" FILES "${fileItem}")
    endforeach()

    set(${out_files} ${RESULT} PARENT_SCOPE)
endfunction()

set(SHADER_CPP_GENERATED_CMAKE "${CMAKE_CURRENT_SOURCE_DIR}/cmake/GenerateShaderCPPFile.cmake" CACHE STRING "" FORCE)

function(compile_shader TARGET_NAME OUTPUT SHADER_INCLUDE_DIR)
    set(working_dir "${CMAKE_CURRENT_SOURCE_DIR}")
    set(GLSLANG_BIN $ENV{VULKAN_SDK}/Bin/glslangValidator.exe) # 设置glslangValidator的位置
    set(ALL_SHADER_FILE "")
    # get files in SHADER_INCLUDE_DIR
    file(GLOB_RECURSE ALL_SHADER_FILE "${SHADER_INCLUDE_DIR}/*.vert" "${SHADER_INCLUDE_DIR}/*.frag" "${SHADER_INCLUDE_DIR}/*.comp" "${SHADER_INCLUDE_DIR}/*.tesc" "${SHADER_INCLUDE_DIR}/*.tese" "${SHADER_INCLUDE_DIR}/*.geom")


    foreach(SHADER ${ALL_SHADER_FILE})  # 遍历每一个shader源文件
        get_filename_component(SHADER_NAME ${SHADER} NAME)  # 获取shader的名字
        string(REPLACE "." "_" HEADER_NAME ${SHADER_NAME})  # 在生成的.h文件中将文件名的'.'换成'_'
        string(TOUPPER ${HEADER_NAME} GLOBAL_SHADER_VAR)    # 将存储二进制内容的全局vector对象名改为全部大写
        set(SPV_FILE "${OUTPUT}/spv/${SHADER_NAME}.spv")    # 生成的.spv文件
        set(CPP_FILE "${OUTPUT}/cpp/${HEADER_NAME}.h")      # 生成的.h文件
        add_custom_command(
                OUTPUT ${SPV_FILE}
                COMMAND ${GLSLANG_BIN} -I${SHADER_INCLUDE_DIR} -V100 -o ${SPV_FILE} ${SHADER}
                DEPENDS ${SHADER}
                WORKING_DIRECTORY "${working_dir}")             # 添加编译命令，在项目生成时执行
        list(APPEND ALL_GENERATED_SPV_FILES ${SPV_FILE})
        add_custom_command(
                OUTPUT ${CPP_FILE}
                COMMAND ${CMAKE_COMMAND} -DPATH=${SPV_FILE} -DHEADER="${CPP_FILE}"
                -DGLOBAL="${GLOBAL_SHADER_VAR}" -P "${SHADER_CPP_GENERATED_CMAKE}"
                DEPENDS ${SPV_FILE}
                WORKING_DIRECTORY "${working_dir}")         # 添加执行将spv转换为h文件的cmake函数的命令
        list(APPEND ALL_GENERATED_CPP_FILES ${CPP_FILE})
    endforeach()
    add_custom_target(${TARGET_NAME}    # 将上述过程添加到一个生成目标中
            DEPENDS ${ALL_GENERATED_SPV_FILES} ${ALL_GENERATED_CPP_FILES} SOURCES ${SHADERS})
endfunction()


add_subdirectory(core)
add_subdirectory(third_party/imgui)
add_subdirectory(third_party/portaudio)
add_subdirectory(third_party/spdlog)
add_subdirectory(third_party/glfw)
add_subdirectory(third_party/mempool)
add_subdirectory(third_party/taskflow)

# setup portaudio
set(PA_USE_ASIO ON CACHE BOOL "" FORCE)
set(PA_BUILD_SHARED_LIBS ON CACHE BOOL "" FORCE)

if (WIN32)
    set(PA_USE_WMME OFF CACHE BOOL "" FORCE)
    set(PA_USE_WDMKS OFF CACHE BOOL "" FORCE)
    set(PA_USE_WDMKS_DEVICE_INFO OFF CACHE BOOL "" FORCE)
    set(PA_USE_DS OFF CACHE BOOL "" FORCE)
elseif(APPLE)
    set(PA_USE_COREAUDIO ON CACHE BOOL "" FORCE)
endif()

# setup spdlog
set(SPDLOG_BUILD_SHARED ON CACHE BOOL "" FORCE)
set(SPDLOG_BUILD_EXAMPLE OFF CACHE BOOL "" FORCE)
set(SPDLOG_BUILD_TESTS OFF CACHE BOOL "" FORCE)
set(SPDLOG_BUILD_BENCH OFF CACHE BOOL "" FORCE)
set(SPDLOG_FMT_EXTERNAL OFF CACHE BOOL "" FORCE)
set(SPDLOG_FMT_EXTERNAL_HO OFF CACHE BOOL "" FORCE)
set(SPDLOG_WCHAR_SUPPORT ON CACHE BOOL "" FORCE)
set(SPDLOG_ENABLE_PCH ON CACHE BOOL "" FORCE)
set(SPDLOG_USE_STD_FORMAT OFF CACHE BOOL "" FORCE)

# setup taskflow
set(TF_BUILD_TESTS OFF CACHE BOOL "" FORCE)
set(TF_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)

add_definitions(-DGLFW_INCLUDE_NONE)

# install
install(DIRECTORY ${CMAKE_SOURCE_DIR}/third_party/imgui/imgui/misc/fonts DESTINATION ${CMAKE_BINARY_DIR}/bin)