cmake_minimum_required(VERSION 3.19)
project(soft_bus LANGUAGES CXX)

# ========== 基础设置 ==========
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_AUTORCC ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_POSITION_INDEPENDENT_CODE ON)

if(NOT CMAKE_VERBOSE_MAKEFILE)
  set(CMAKE_VERBOSE_MAKEFILE ON)
endif()

# ========== 查找 Qt6 ==========
find_package(Qt6 6.5 REQUIRED COMPONENTS Core Widgets SerialPort Charts)

# ========== 路径与平台 ==========
set(PROJECT_ROOT ${CMAKE_CURRENT_SOURCE_DIR})
set(ROCKSDB_DIR "${PROJECT_ROOT}/rocksdb")
set(ADS_DIR "${PROJECT_ROOT}/advanced_dock_system")

if("${CMAKE_SIZEOF_VOID_P}" STREQUAL "4")
    set(PlatformDir "x86")
else()
    set(PlatformDir "x64")
endif()

# ========== 是否构建 shared rocksdb（默认 false） ==========
option(BUILD_ROCKSDB_SHARED "Build RocksDB as shared library instead of static" OFF)

# ========== 明确 rocksdb 库路径（你已确认） ==========
# 你已使用 `find rocksdb -name "librocksdb.a"` 得到 rocksdb/librocksdb.a
if(WIN32)
  set(ROCKSDB_LIB "${ROCKSDB_DIR}/rocksdb.lib")
elseif(BUILD_ROCKSDB_SHARED)
  set(ROCKSDB_LIB "${ROCKSDB_DIR}/librocksdb.so")
else()
  set(ROCKSDB_LIB "${ROCKSDB_DIR}/librocksdb.a")
endif()

message(STATUS "Expect RocksDB lib at: ${ROCKSDB_LIB}")

# ========== 如果需要，从源码构建 RocksDB（声明 OUTPUT 以让 Ninja 在链接前执行） ==========
# 如果你不需要在 CMake 构建时自动触发 rocksdb 构建，可以注释掉下列 add_custom_command / add_custom_target。
# 这里假定 rocksdb 的 Makefile 支持 `make static_lib`
add_custom_command(
  OUTPUT ${ROCKSDB_LIB}
  COMMAND ${CMAKE_COMMAND} -E echo "Building RocksDB static library..."
  COMMAND make -C ${ROCKSDB_DIR} static_lib -j8
  WORKING_DIRECTORY ${ROCKSDB_DIR}
  COMMENT "Building RocksDB (static_lib)"
  VERBATIM
)

add_custom_target(BUILD_ROCKSDB_DEPENDS
  DEPENDS ${ROCKSDB_LIB}
)

# ========== ADS 子项目（若存在 CMakeLists） ==========
if(EXISTS "${ADS_DIR}/src/CMakeLists.txt")
    add_subdirectory(${ADS_DIR}/src)
else()
    message(STATUS "ADS CMakeLists not found at ${ADS_DIR}/src — assuming header-only or prebuilt.")
endif()

# ========== 源文件列表与可执行目标 ==========
qt_standard_project_setup()

set(SOFT_BUS_SOURCES
    main.cpp
    src/soft_bus_core/soft_bus_core.cpp
    src/soft_bus_core/soft_bus_core.h
    src/serial_manager/serial_manager.cpp
    src/serial_manager/serial_manager.h
    mainwindow.cpp
    mainwindow.h
    src/bus_tree/bus_tree.cpp
    src/bus_tree/bus_tree.h
    src/bus_tree/bus_tree.ui
    src/toolbar/toolbar.cpp
    src/toolbar/toolbar.h
    src/view_core/viewcore.cpp
    src/view_core/viewcore.h
    src/view_core/viewcore.ui
    src/view_serial/viewserial.cpp
    src/view_serial/viewserial.h
    src/view_serial/viewserial.ui
    src/view_serial/serialtree.ui
    src/my_dock_manager/mdockmanager.cpp
    src/my_dock_manager/mdockmanager.h
    resource.qrc
)

qt_add_executable(soft_bus
    WIN32 MACOSX_BUNDLE
    ${SOFT_BUS_SOURCES}
)

# soft_bus 依赖 rocksdb 构建（如果你希望手动管理 rocksdb 构建，可删除这行）
add_dependencies(soft_bus BUILD_ROCKSDB_DEPENDS)

# ========== 包含目录 ==========
target_include_directories(soft_bus PRIVATE
    ${ROCKSDB_DIR}/include
    ${PROJECT_ROOT}/src
    ${ADS_DIR}/src
)

# ========== 查找并链接系统与压缩库（RocksDB 依赖） ==========
find_package(ZLIB REQUIRED)
if(ZLIB_FOUND)
  message(STATUS "Found ZLIB: ${ZLIB_LIBRARY} (includes ${ZLIB_INCLUDE_DIR})")
endif()

find_package(Snappy QUIET)
if(Snappy_FOUND)
  message(STATUS "Found Snappy")
endif()

find_package(LZ4 QUIET)
if(TARGET LZ4::LZ4 OR LZ4_FOUND)
  message(STATUS "Found LZ4")
endif()

find_package(ZSTD QUIET)
if(TARGET ZSTD::ZSTD OR ZSTD_FOUND)
  message(STATUS "Found ZSTD")
endif()

find_package(BZip2 QUIET)
if(BZIP2_FOUND)
  message(STATUS "Found BZip2")
endif()

find_package(Threads REQUIRED)

# 收集额外压缩库（顺序重要：静态库之后列出依赖库）
set(EXTRA_COMPRESSION_LIBS "")
if(Snappy_FOUND)
    list(APPEND EXTRA_COMPRESSION_LIBS Snappy::snappy)
endif()

if(TARGET LZ4::LZ4)
    list(APPEND EXTRA_COMPRESSION_LIBS LZ4::LZ4)
elseif(LZ4_FOUND)
    list(APPEND EXTRA_COMPRESSION_LIBS lz4)
endif()

if(TARGET ZSTD::ZSTD)
    list(APPEND EXTRA_COMPRESSION_LIBS ZSTD::ZSTD)
elseif(ZSTD_FOUND)
    list(APPEND EXTRA_COMPRESSION_LIBS zstd)
endif()

if(BZIP2_FOUND)
    list(APPEND EXTRA_COMPRESSION_LIBS BZip2::BZip2)
endif()

# dl & threads
list(APPEND EXTRA_COMPRESSION_LIBS ${CMAKE_DL_LIBS} Threads::Threads)

message(STATUS "Extra compression/libs to link: ${EXTRA_COMPRESSION_LIBS}")

# ========== 链接库（先 rocksdb 静态库，然后其依赖库，最后 Qt 库） ==========
target_link_libraries(soft_bus
    PRIVATE
        ${ROCKSDB_LIB}
        ${EXTRA_COMPRESSION_LIBS}
        ZLIB::ZLIB
        Qt6::Core
        Qt6::Widgets
        Qt6::SerialPort
        Qt6::Charts
)

# 如果 ADS 提供 CMake 目标则优先链接
if(TARGET ads::qtadvanceddocking-qt6)
    target_link_libraries(soft_bus PRIVATE ads::qtadvanceddocking-qt6)
elseif(TARGET ads::qtadvanceddocking-qt5)
    target_link_libraries(soft_bus PRIVATE ads::qtadvanceddocking-qt5)
endif()

# ========== 编译选项 ==========
target_compile_definitions(soft_bus PRIVATE $<$<CONFIG:DEBUG>:DEBUG_BUILD>)
if(MSVC)
    target_compile_options(soft_bus PRIVATE /W4 /permissive-)
else()
    target_compile_options(soft_bus PRIVATE -Wall -Wextra -Wpedantic)
endif()

# ========== 安装/部署 ==========
include(GNUInstallDirs)

install(TARGETS soft_bus
    BUNDLE  DESTINATION .
    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
)

qt_generate_deploy_app_script(
    TARGET soft_bus
    OUTPUT_SCRIPT deploy_script
    NO_UNSUPPORTED_PLATFORM_ERROR
)
install(SCRIPT ${deploy_script})

# ========== rocksdb 清理目标（可选） ==========
add_custom_target(rocksdb_clean
    COMMAND ${CMAKE_COMMAND} -E echo "Cleaning RocksDB build artifacts..."
    COMMAND make -C ${ROCKSDB_DIR} clean
    WORKING_DIRECTORY ${ROCKSDB_DIR}
    COMMENT "rocksdb clean"
)

# ========== 配置摘要 ==========
message(STATUS "Project root: ${PROJECT_ROOT}")
message(STATUS "RocksDB dir: ${ROCKSDB_DIR}")
message(STATUS "Expect RocksDB lib at: ${ROCKSDB_LIB}")
message(STATUS "Extra compression libs: ${EXTRA_COMPRESSION_LIBS}")