cmake_minimum_required(VERSION 3.20)
project(ClientAll LANGUAGES C CXX)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

if(MSVC)
    # Source files should be saved as UTF-8 with BOM; compile source and
    # execution charsets as UTF-8 instead of setting encodings in code.
    add_compile_options(/utf-8)
endif()

# Qt global config. Qt is intentionally not hard-coded here; configure it with
# CMake-recognized environment variables such as CMAKE_PREFIX_PATH or Qt5_DIR.
set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTOUIC ON)
set(CMAKE_AUTORCC ON)
find_package(Qt5 REQUIRED COMPONENTS Core Network Gui Widgets)

get_target_property(QT_QMAKE_EXECUTABLE Qt5::qmake IMPORTED_LOCATION)
get_filename_component(QT_BIN_DIR "${QT_QMAKE_EXECUTABLE}" DIRECTORY)
find_program(QT_LRELEASE_EXECUTABLE NAMES lrelease lrelease.exe HINTS "${QT_BIN_DIR}" REQUIRED)
find_program(QT_LUPDATE_EXECUTABLE NAMES lupdate lupdate.exe HINTS "${QT_BIN_DIR}" REQUIRED)

set(TRANSLATION_TS "${CMAKE_SOURCE_DIR}/i18n/update-client_zh_CN.ts")
set(TRANSLATION_QM "${CMAKE_SOURCE_DIR}/i18n/update-client_zh_CN.qm")
set(TRANSLATION_SCAN_DIRS
    "${CMAKE_SOURCE_DIR}/Common"
    "${CMAKE_SOURCE_DIR}/Bootstrap"
    "${CMAKE_SOURCE_DIR}/Launcher"
    "${CMAKE_SOURCE_DIR}/Updater"
    "${CMAKE_SOURCE_DIR}/MainApp"
)

add_custom_command(
    OUTPUT "${TRANSLATION_QM}"
    COMMAND "${QT_LRELEASE_EXECUTABLE}" "${TRANSLATION_TS}" -qm "${TRANSLATION_QM}"
    DEPENDS "${TRANSLATION_TS}"
    COMMENT "Compile Qt translation: update-client_zh_CN.qm"
    VERBATIM
)
add_custom_target(update_client_translations ALL
    DEPENDS "${TRANSLATION_QM}"
)

add_custom_target(update_client_lupdate
    COMMAND "${QT_LUPDATE_EXECUTABLE}"
        ${TRANSLATION_SCAN_DIRS}
        -extensions cpp,h
        -no-obsolete
        -ts "${TRANSLATION_TS}"
    WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
    COMMENT "Update Qt translation source: update-client_zh_CN.ts"
    VERBATIM
)

# Local-only third-party dependencies. The thirdparty directory is ignored by Git.
# Windows can use thirdparty/OpenSSL-Win64. Linux normally uses system OpenSSL.
set(THIRDPARTY_DIR "${CMAKE_SOURCE_DIR}/thirdparty" CACHE PATH "Local third-party dependency root")
if(WIN32)
    set(SIMCAE_OPENSSL_ROOT "${THIRDPARTY_DIR}/OpenSSL-Win64" CACHE PATH "OpenSSL Win64 root")
    if(NOT EXISTS "${SIMCAE_OPENSSL_ROOT}/include/openssl")
        message(FATAL_ERROR
            "OpenSSL not found: ${SIMCAE_OPENSSL_ROOT}\n"
            "Copy OpenSSL-Win64 to thirdparty/OpenSSL-Win64, or configure with "
            "-DSIMCAE_OPENSSL_ROOT=<OpenSSL-Win64 root>."
        )
    endif()
    set(OPENSSL_INC "${SIMCAE_OPENSSL_ROOT}/include")
    set(OPENSSL_LIB_DEBUG "${SIMCAE_OPENSSL_ROOT}/lib/VC/x64/MDd")
    set(OPENSSL_LIB_RELEASE "${SIMCAE_OPENSSL_ROOT}/lib/VC/x64/MD")
    foreach(OPENSSL_LIB_DIR IN ITEMS "${OPENSSL_LIB_DEBUG}" "${OPENSSL_LIB_RELEASE}")
        if(NOT EXISTS "${OPENSSL_LIB_DIR}")
            message(FATAL_ERROR "OpenSSL library directory not found: ${OPENSSL_LIB_DIR}")
        endif()
    endforeach()
    set(SIMCAE_OPENSSL_LINK_LIBRARIES
        $<$<CONFIG:Debug>:${OPENSSL_LIB_DEBUG}/libssl.lib>
        $<$<CONFIG:Debug>:${OPENSSL_LIB_DEBUG}/libcrypto.lib>
        $<$<NOT:$<CONFIG:Debug>>:${OPENSSL_LIB_RELEASE}/libssl.lib>
        $<$<NOT:$<CONFIG:Debug>>:${OPENSSL_LIB_RELEASE}/libcrypto.lib>
    )
else()
    find_package(OpenSSL REQUIRED)
    set(OPENSSL_INC "${OPENSSL_INCLUDE_DIR}")
    set(SIMCAE_OPENSSL_LINK_LIBRARIES OpenSSL::SSL OpenSSL::Crypto)
endif()

add_compile_definitions(HAVE_OPENSSL=1)

# 统一输出目录。Windows 保持历史 out/bin；Linux 单独输出，避免和 Windows DLL/PDB 混在一起。
if(UNIX AND NOT APPLE)
    set(SIMCAE_OUTPUT_ROOT ${CMAKE_SOURCE_DIR}/out/linux)
else()
    set(SIMCAE_OUTPUT_ROOT ${CMAKE_SOURCE_DIR}/out)
endif()
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${SIMCAE_OUTPUT_ROOT}/lib)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${SIMCAE_OUTPUT_ROOT}/bin)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${SIMCAE_OUTPUT_ROOT}/bin)

# Bootstrap 使用 Qt 实现跨平台更新交接，避免直接依赖 Win32 API。
add_subdirectory(Bootstrap)

# 先编译公共库
add_subdirectory(Common)

# 再编译三个业务程序
add_subdirectory(Launcher)
add_subdirectory(Updater)
add_subdirectory(MainApp)

# 默认启动项目
set_property(DIRECTORY ${CMAKE_SOURCE_DIR} PROPERTY VS_STARTUP_PROJECT Launcher)

# Copy config templates and static resources to output bin folder.
if(UNIX AND NOT APPLE AND EXISTS "${CMAKE_SOURCE_DIR}/config/app_config.linux.example.json")
    set(APP_CONFIG_SOURCE_FILE "${CMAKE_SOURCE_DIR}/config/app_config.linux.example.json")
else()
    set(APP_CONFIG_SOURCE_FILE "${CMAKE_SOURCE_DIR}/config/app_config.example.json")
endif()
set(CONFIG_SOURCE_DIR "${CMAKE_SOURCE_DIR}/config")
set(MANIFEST_PUBLIC_KEY_FILE "${CONFIG_SOURCE_DIR}/manifest_public_key.pem")
set(INI_TARGET_FOLDER "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}")

# app_config.json 包含运行时版本状态；如果存在旧 client.ini，则交给客户端首次启动迁移
file(MAKE_DIRECTORY "${INI_TARGET_FOLDER}")
file(MAKE_DIRECTORY "${INI_TARGET_FOLDER}/config")
if(NOT EXISTS "${INI_TARGET_FOLDER}/config/app_config.json" AND NOT EXISTS "${INI_TARGET_FOLDER}/client.ini")
    configure_file("${APP_CONFIG_SOURCE_FILE}" "${INI_TARGET_FOLDER}/config/app_config.json" COPYONLY)
endif()
foreach(RUNTIME_RESOURCE local_state.json version_policy.dat)
    if(EXISTS "${CONFIG_SOURCE_DIR}/${RUNTIME_RESOURCE}" AND NOT EXISTS "${INI_TARGET_FOLDER}/config/${RUNTIME_RESOURCE}")
        configure_file("${CONFIG_SOURCE_DIR}/${RUNTIME_RESOURCE}" "${INI_TARGET_FOLDER}/config/${RUNTIME_RESOURCE}" COPYONLY)
    endif()
endforeach()

# 编译阶段同步静态配置资源
add_custom_target(copy_client_resources ALL
    COMMAND ${CMAKE_COMMAND} -E make_directory ${INI_TARGET_FOLDER}
    COMMAND ${CMAKE_COMMAND} -E make_directory ${INI_TARGET_FOLDER}/config
    COMMAND ${CMAKE_COMMAND} -E copy_if_different ${MANIFEST_PUBLIC_KEY_FILE} ${INI_TARGET_FOLDER}/config/manifest_public_key.pem
    COMMAND ${CMAKE_COMMAND} -E copy_if_different ${MANIFEST_PUBLIC_KEY_FILE} ${INI_TARGET_FOLDER}/manifest_public_key.pem
    COMMENT "Copy client config directory and manifest public key to output bin folder"
)
add_dependencies(Launcher copy_client_resources)
add_dependencies(Updater copy_client_resources)
add_dependencies(MainApp copy_client_resources)
add_dependencies(Launcher update_client_translations)
add_dependencies(Updater update_client_translations)
add_dependencies(MainApp update_client_translations)
add_dependencies(Bootstrap update_client_translations)

# Install rules for packaging
if(EXISTS "${APP_CONFIG_SOURCE_FILE}")
    install(FILES "${APP_CONFIG_SOURCE_FILE}" DESTINATION bin/config RENAME app_config.json)
endif()
if(EXISTS "${MANIFEST_PUBLIC_KEY_FILE}")
    install(FILES "${MANIFEST_PUBLIC_KEY_FILE}" DESTINATION bin/config)
    install(FILES "${MANIFEST_PUBLIC_KEY_FILE}" DESTINATION bin)
endif()