#
# OpenVR OSVR driver
#

# For our generated file
set(CMAKE_INCLUDE_CURRENT_DIR ON)

#
# Detect available C++ language, library, and compiler features
#
include(WriteCompilerDetectionHeader)
write_compiler_detection_header(
	FILE "osvr_compiler_detection.h"
	PREFIX OSVR
	COMPILERS GNU Clang AppleClang MSVC
	FEATURES cxx_override cxx_noexcept
)

include(CheckCXXSourceCompiles)
set(CMAKE_REQUIRED_DEFINITIONS ${CMAKE_CXX11_STANDARD_COMPILE_OPTION})
check_cxx_source_compiles("#include <memory>\nint main(int, char**) { std::unique_ptr<int> i = std::make_unique<int>(0); }" OSVR_HAS_STD_MAKE_UNIQUE)
configure_file(osvr_compiler_tests.h.in "${CMAKE_CURRENT_BINARY_DIR}/osvr_compiler_tests.h")

# Generate Version.h
include(GetGitRevisionDescription)
git_describe(GIT_REVISION_DESCRIPTION --tags --match v*)
if(GIT_REVISION_DESCRIPTION)
    string(REPLACE "v" ""
        GIT_REVISION_DESCRIPTION
        "${GIT_REVISION_DESCRIPTION}")
    set(STEAMVR_OSVR_VERSION "${GIT_REVISION_DESCRIPTION}")
    message(STATUS "Git reports version ${STEAMVR_OSVR_VERSION}")
else()
    message(STATUS "Could not get revision information from Git! Calling this just version ${STEAMVR_OSVR_VERSION}!")
endif()
configure_file(Version.h.in "${CMAKE_CURRENT_BINARY_DIR}/Version.h")


# Disable 'lib' prefix on POSIX systems
set(CMAKE_SHARED_LIBRARY_PREFIX "")
set(CMAKE_SHARED_MODULE_PREFIX "")

add_library(driver_osvr
	MODULE
	Logging.h
	OSVRDisplay.h
	OSVRDisplay.cpp
	OSVRTrackedDevice.cpp
	OSVRTrackedDevice.h
	OSVRTrackedHMD.cpp
	OSVRTrackedHMD.h
	OSVRTrackingReference.cpp
	OSVRTrackingReference.h
	PrettyPrint.cpp
	PrettyPrint.h
	ServerDriver_OSVR.cpp
	ServerDriver_OSVR.h
	Settings.h
	ValveStrCpy.h
	Version.h
	driver_osvr.cpp
	driver_osvr.h
	identity.h
	make_unique.h
	matrix_cast.h
	osvr_dll_export.h
	platform_fixes.h
)
#	WatchdogDriver_OSVR.cpp
#	WatchdogDriver_OSVR.h

target_link_libraries(driver_osvr
	PRIVATE
	osvr::osvrClientKitCpp
	eigen-headers
	util-headers
	JsonCpp::JsonCpp
	osvrDisplay_static
	osvrRenderManager::osvrRenderManager
)

if(WIN32)
	target_link_libraries(driver_osvr PRIVATE dxgi)
endif()

target_include_directories(driver_osvr
	SYSTEM PRIVATE
	${OPENVR_INCLUDE_DIRS}
	${CMAKE_SOURCE_DIR}/vendor/OSVR-Display
	${CMAKE_BINARY_DIR}/vendor/OSVR-Display)
set_property(TARGET driver_osvr PROPERTY CXX_STANDARD 11)
target_compile_features(driver_osvr PRIVATE cxx_override)
if(NOT OSVR_HAS_STD_MAKE_UNIQUE)
	target_link_libraries(driver_osvr PRIVATE make-unique-impl-header)
endif()

install(TARGETS driver_osvr
	DESTINATION "${DRIVER_INSTALL_DIR}")

# Tell SteamVR where to find our driver
file(TO_NATIVE_PATH "${CMAKE_INSTALL_FULL_LIBDIR}/openvr/osvr" DRIVER_ROOT_DIR)
string(REPLACE "\\" "\\\\" DRIVER_ROOT_DIR "${DRIVER_ROOT_DIR}")
install(CODE "execute_process(COMMAND \"${VRPATHREG}\" adddriver \"${DRIVER_ROOT_DIR}\")")

if(WIN32)
	include(CopyImportedTarget)
	list(APPEND targets osvr::osvrClientKit osvr::osvrClient osvr::osvrCommon osvr::osvrUtil)
	list(APPEND targets osvrRenderManager::osvrRenderManager)
	foreach(target IN LISTS targets)
		copy_imported_targets(${target}) # for use in build tree
		install_imported_target(${target} DESTINATION "${DRIVER_INSTALL_DIR}") # in installed directory
	endforeach()

	osvrrm_install_dependencies("${DRIVER_INSTALL_DIR}")
endif()

#
# Test program
#
#add_executable(test_hmd_driver test_hmd_driver.cpp)
#target_link_libraries(test_hmd_driver
#	PRIVATE
#	driver_osvr
#	osvr::osvrClientKitCpp
#	eigen-headers
#	JsonCpp::JsonCpp
#	util-headers
#	osvrRenderManager::osvrRenderManager)
#
#if(NOT OSVR_HAS_STD_MAKE_UNIQUE)
#	target_link_libraries(test_hmd_driver PRIVATE make-unique-impl-header)
#endif()
#target_include_directories(test_hmd_driver
#	SYSTEM PRIVATE
#	${OPENVR_INCLUDE_DIRS}
#	${CMAKE_SOURCE_DIR}/vendor/OSVR-Display
#	${CMAKE_BINARY_DIR}/vendor/OSVR-Display)
#set_property(TARGET test_hmd_driver PROPERTY CXX_STANDARD 11)
#target_compile_features(test_hmd_driver PRIVATE cxx_override)