# ==============================================================================
# 宏定义：CREATE_LIBRARY_FROM_DIRS
# 参数 1: TARGET_NAME   - 要生成的库的名称
# 参数 2: LIB_TYPE      - 库类型（STATIC 或 SHARED）
# 参数 3: SOURCE_DIRS   - 需要扫描源码的目录列表（分号分隔的字符串）
# 参数 4: EXCLUDE_FILES - 需要额外过滤的文件名列表（分号分隔的字符串，支持正则）
# ==============================================================================
macro(create_library_from_dirs TARGET_NAME LIB_TYPE SOURCE_DIRS EXCLUDE_FILES)
    set(ALL_SOURCES "")
    add_library(${TARGET_NAME} ${LIB_TYPE} "")
    # 1. 遍历传入的每一个目录
    foreach(DIR ${SOURCE_DIRS})
        # 统一处理相对路径和绝对路径
        if(NOT IS_ABSOLUTE "${DIR}")
            set(DIR "${CMAKE_CURRENT_SOURCE_DIR}/${DIR}")
        endif()

        # 检查目录是否存在，防止写错路径导致报错
        if(EXISTS "${DIR}")
            # 2. 收集当前目录下所有的 .c, .s, .S 文件
            file(GLOB ALL_FILES
                    "${DIR}/*.c"
                    "${DIR}/*.s"
                    "${DIR}/*.S"
            )
            target_include_directories(${TARGET_NAME} PUBLIC ${DIR})
            message(STATUS "[${TARGET_NAME}] INCLUDE ${DIR}")


            foreach(FILE_PATH ${ALL_FILES})
                # 获取纯文件名（例如：Compiler_GNUC.c），方便精准匹配
                get_filename_component(FILE_NAME "${FILE_PATH}" NAME)

                # 检查是否匹配自定义的排除列表
                set(SHOULD_EXCLUDE FALSE)
                foreach(EX_PATTERN ${EXCLUDE_FILES})
                    # 支持完整文件名匹配或正则表达式匹配
                    if("${FILE_NAME}" STREQUAL "${EX_PATTERN}" OR "${FILE_NAME}" MATCHES "${EX_PATTERN}")
                        set(SHOULD_EXCLUDE TRUE)
                        break()
                    endif()
                endforeach()

                # 4. 执行过滤判断
                if(FILE_PATH MATCHES "\\.t\\.c$")
                    # 过滤单元测试文件
                    list(APPEND UNIT_TEST_SOURCES ${FILE_PATH})
                elseif(SHOULD_EXCLUDE)
                    # 过滤用户指定的特定文件
                    message(STATUS "[${TARGET_NAME}] EXCLUDED specific file: ${FILE_NAME} from target ${TARGET_NAME}")
                else()
                    # 留下的才是有效的库源码
                    list(APPEND ALL_SOURCES ${FILE_PATH})
                endif()
            endforeach()
        else()
            message(WARNING "[${TARGET_NAME}] Directory does not exist: ${DIR}")
        endif()
    endforeach()

    # 4. 确保找到了有效的源代码再创建库
    list(LENGTH ALL_SOURCES SOURCE_COUNT)
    if(SOURCE_COUNT GREATER 0)
#        add_library(${TARGET_NAME} ${LIB_TYPE} ${ALL_SOURCES})
        target_sources(${TARGET_NAME} PUBLIC ${ALL_SOURCES})
        message(STATUS "[${TARGET_NAME}] Created ${LIB_TYPE} library '${TARGET_NAME}' with ${SOURCE_COUNT} source files.")
        foreach (item IN LISTS ALL_SOURCES)
            message(STATUS "[${TARGET_NAME}] SOURCE: ${item}")
        endforeach ()
    else()
        message(FATAL_ERROR "No valid source files found for target: ${TARGET_NAME}")
    endif()

    list(LENGTH UNIT_TEST_SOURCES UNIT_TEST_COUNT)
    if(UNIT_TEST_COUNT GREATER 0)
        foreach (item IN LISTS UNIT_TEST_SOURCES)
            get_filename_component(TestUnit ${item} NAME_WLE)
            message(STATUS "[${TARGET_NAME}] TEST: ${TestUnit} - ${item}")
            add_executable(${TestUnit} ${item})
            target_link_libraries(${TestUnit} PUBLIC ${TARGET_NAME})
        endforeach ()
    endif ()
endmacro()