cmake_minimum_required(VERSION 3.1.15)
project(OrbbecSDK VERSION 1.10.8 LANGUAGES C CXX)

# Determine host platform
include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/DetermineHostPlatform.cmake)

if(WIN32)
    set(ORBBEC_LIB_PREFIX "")
    set(ORBBEC_LIB_SUFFIX ".lib")
    set(ORBBEC_DLL_SUFFIX ".dll")
elseif(APPLE)
    set(ORBBEC_LIB_PREFIX "lib")
    set(ORBBEC_LIB_SUFFIX ".dylib")
    set(ORBBEC_DLL_SUFFIX ".dylib")
elseif(UNIX)
    set(ORBBEC_LIB_PREFIX "lib")
    set(ORBBEC_LIB_SUFFIX ".so")
    set(ORBBEC_DLL_SUFFIX ".so")
endif()

# OrbbecSDK library
set(OrbbecSDK_LIBS_DIR ${CMAKE_CURRENT_SOURCE_DIR}/lib/${HOST_PLATFORM})
set(OrbbecSDK_LIBRARY  ${OrbbecSDK_LIBS_DIR}/${ORBBEC_LIB_PREFIX}OrbbecSDK${ORBBEC_LIB_SUFFIX})
set(OrbbecSDK_DLL ${OrbbecSDK_LIBS_DIR}/${ORBBEC_LIB_PREFIX}OrbbecSDK${ORBBEC_DLL_SUFFIX})
set(OrbbecSDK_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/include/)
set(OrbbecSDK_LIBS ${OrbbecSDK_LIBRARY})
set(OrbbecSDK_FOUND TRUE)

add_library(OrbbecSDK::OrbbecSDK SHARED IMPORTED GLOBAL)
set_target_properties(OrbbecSDK::OrbbecSDK PROPERTIES
    IMPORTED_LOCATION ${OrbbecSDK_DLL}
    IMPORTED_IMPLIB ${OrbbecSDK_LIBRARY}
    INTERFACE_INCLUDE_DIRECTORIES ${OrbbecSDK_INCLUDE_DIRS}
)

# check if the project is being used directly or via add_subdirectory
if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR})  # project is used directly
    # Set the C++ standard to C++ 11 and C standard to C11
    set(CMAKE_CXX_STANDARD 11)
    set(CMAKE_C_STANDARD 11)

    # Options
    option(BUILD_EXAMPLES "Build examples" ON)
    option(INSTALL_LIBUDEV "Install libudev" OFF)

    # Compiler and Linker options
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC -O3")
    set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -fPIC -g")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC -O3")
    set(CMAKE_BUILD_TYPE "Release")
    set(CMAKE_INSTALL_PREFIX "${CMAKE_BINARY_DIR}/install")

    set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
    set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
    set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)

    if (CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
        add_compile_options(-Wall -Wextra -Wpedantic)
    endif ()

    # paths
    set(ORBBEC_EXAMPLES_DIR ${CMAKE_CURRENT_SOURCE_DIR}/examples/)
    set(ORBBEC_DOCS_DIR ${CMAKE_CURRENT_SOURCE_DIR}/doc/)
    set(ORBBEC_MISC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/misc/)
    set(ORBBEC_CONFIG_DIR ${ORBBEC_MISC_DIR}/config/)
    set(ORBBEC_SCRIPT_DIR ${ORBBEC_MISC_DIR}/scripts/)

    # Subdirectories
    if (BUILD_EXAMPLES)
        add_subdirectory(examples)
    endif ()

    # Installation of headers, configs, libs
    include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/InstallTargets.cmake)

    # Package configuration
    include(CMakePackageConfigHelpers)

    configure_package_config_file(
        "${CMAKE_CURRENT_SOURCE_DIR}/cmake/OrbbecSDKConfig.cmake.in"
        "${CMAKE_CURRENT_BINARY_DIR}/OrbbecSDKConfig.cmake"
        INSTALL_DESTINATION lib/
        PATH_VARS OrbbecSDK_INCLUDE_DIRS OrbbecSDK_LIBS_DIR
    )

    write_basic_package_version_file(
        "${CMAKE_CURRENT_BINARY_DIR}/OrbbecSDKConfigVersion.cmake"
        VERSION ${PROJECT_VERSION}
        COMPATIBILITY AnyNewerVersion
    )

    install(FILES
        "${CMAKE_CURRENT_BINARY_DIR}/OrbbecSDKConfig.cmake"
        "${CMAKE_CURRENT_BINARY_DIR}/OrbbecSDKConfigVersion.cmake"
        DESTINATION lib/
    )
    # OrbbecSDK.pc.in
    if((UNIX))
    configure_file(
        "${CMAKE_CURRENT_SOURCE_DIR}/OrbbecSDK.pc.in"
        "${CMAKE_CURRENT_BINARY_DIR}/OrbbecSDK.pc"
        @ONLY
    )
    install(FILES
        "${CMAKE_CURRENT_BINARY_DIR}/OrbbecSDK.pc"
        DESTINATION lib/pkgconfig/
    )
    endif()

    # Uninstall target
    include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/UninstallTarget.cmake)
endif()