CMAKE_MINIMUM_REQUIRED(VERSION 3.17.0)

IF(DEFINED ENV{VCPKG_ROOT} AND NOT DEFINED CMAKE_TOOLCHAIN_FILE)
	MESSAGE(STATUS "Using vcpkg env variable")
	SET(CMAKE_TOOLCHAIN_FILE "$ENV{VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake" CACHE STRING "")
ELSEIF(NOT DEFINED CMAKE_TOOLCHAIN_FILE)
	MESSAGE(STATUS "Using vcpkg submodule")
	SET(CMAKE_TOOLCHAIN_FILE "${CMAKE_CURRENT_SOURCE_DIR}/submodules/vcpkg/scripts/buildsystems/vcpkg.cmake" CACHE STRING "")
ENDIF()

SET(CMAKE_CXX_STANDARD 20)
SET(CMAKE_CXX_STANDARD_REQUIRED ON)
SET(CMAKE_CXX_EXTENSIONS OFF)

PROJECT(EQEmu)

IF(NOT CMAKE_BUILD_TYPE)
	SET(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING "Choose the type of build." FORCE)
ENDIF(NOT CMAKE_BUILD_TYPE)

OPTION(EQEMU_BUILD_PCH "Build with precompiled headers (Windows)" ON)

# Requires libgoogle-perftools-dev google-perftools packages for linux (debian)
IF(EQEMU_ADD_PROFILER)
	SET(CMAKE_EXE_LINKER_FLAGS "-Wl,--no-as-needed,-lprofiler,--as-needed")
ENDIF(EQEMU_ADD_PROFILER)

IF(USE_MAP_MMFS)
	ADD_DEFINITIONS(-DUSE_MAP_MMFS)
ENDIF (USE_MAP_MMFS)

IF(MSVC)
	add_compile_options(/bigobj)
	ADD_DEFINITIONS(-D_CRT_SECURE_NO_WARNINGS)
	ADD_DEFINITIONS(-DNOMINMAX)
	ADD_DEFINITIONS(-DCRASH_LOGGING)
	ADD_DEFINITIONS(-D_HAS_AUTO_PTR_ETC) # for Luabind on C++17

	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP")

	OPTION(EQEMU_DISABLE_MSVC_WARNINGS "Disable MSVC compile warnings." ON)
	IF(EQEMU_DISABLE_MSVC_WARNINGS)
		ADD_DEFINITIONS( "/W0 /D_CRT_SECURE_NO_WARNINGS /wd4005 /wd4996 /nologo /Os")
	ENDIF(EQEMU_DISABLE_MSVC_WARNINGS)
ELSE(MSVC)
	ADD_DEFINITIONS(-DHAS_UNION_SEMUN)
ENDIF(MSVC)

#FreeBSD support
IF(UNIX)
	IF(CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
		ADD_DEFINITIONS(-DFREEBSD)
		ADD_DEFINITIONS(-D_GLIBCXX_USE_C99)
		SET(FREEBSD TRUE)
	ENDIF(CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
	IF(CMAKE_SYSTEM_NAME MATCHES "Darwin")
		ADD_DEFINITIONS(-DDARWIN)
		SET(DARWIN TRUE)
	ENDIF(CMAKE_SYSTEM_NAME MATCHES "Darwin")
ENDIF(UNIX)

find_package(PkgConfig)
find_package(Boost REQUIRED COMPONENTS dynamic_bitset foreach tuple)
find_package(cereal CONFIG REQUIRED)
find_package(fmt CONFIG REQUIRED)
find_package(glm CONFIG REQUIRED)
find_package(unofficial-libmariadb CONFIG REQUIRED)
find_package(libuv CONFIG REQUIRED)
find_package(OpenSSL REQUIRED)
find_package(recastnavigation CONFIG REQUIRED)
find_package(zlib-ng CONFIG REQUIRED)
pkg_check_modules(luajit REQUIRED luajit)
find_package(PerlLibs)

MESSAGE(STATUS "**************************************************")
MESSAGE(STATUS "* Library Detection                              *")
MESSAGE(STATUS "**************************************************")
MESSAGE(STATUS "PERL_INCLUDE_PATH: ${PERL_INCLUDE_PATH}")
MESSAGE(STATUS "PERL_LIBRARY: ${PERL_LIBRARY}")
MESSAGE(STATUS "PERL_INCLUDE_DIR: ${PERL_INCLUDE_DIR}")
MESSAGE(STATUS "PERL_INCLUDE_DIRS: ${PERL_INCLUDE_DIRS}")
MESSAGE(STATUS "PERL_LIBRARIES: ${PERL_LIBRARIES}")
MESSAGE(STATUS "PERL_VERSION: ${PERL_VERSION}")
MESSAGE(STATUS "**************************************************")

SET(EQEMU_LOG_LEVEL 0)
IF(EQEMU_ENABLE_LOG_TRACE)
	MATH(EXPR EQEMU_LOG_LEVEL "${EQEMU_LOG_LEVEL} + 1")
ENDIF(EQEMU_ENABLE_LOG_TRACE)

IF(EQEMU_ENABLE_LOG_DEBUG)
	MATH(EXPR EQEMU_LOG_LEVEL "${EQEMU_LOG_LEVEL} + 2")
ENDIF(EQEMU_ENABLE_LOG_DEBUG)

IF(EQEMU_ENABLE_LOG_INFO)
	MATH(EXPR EQEMU_LOG_LEVEL "${EQEMU_LOG_LEVEL} + 4")
ENDIF(EQEMU_ENABLE_LOG_INFO)

IF(EQEMU_ENABLE_LOG_WARN)
	MATH(EXPR EQEMU_LOG_LEVEL "${EQEMU_LOG_LEVEL} + 8")
ENDIF(EQEMU_ENABLE_LOG_WARN)

IF(EQEMU_ENABLE_LOG_ERROR)
	MATH(EXPR EQEMU_LOG_LEVEL "${EQEMU_LOG_LEVEL} + 16")
ENDIF(EQEMU_ENABLE_LOG_ERROR)

IF(EQEMU_ENABLE_LOG_FATAL)
	MATH(EXPR EQEMU_LOG_LEVEL "${EQEMU_LOG_LEVEL} + 32")
ENDIF(EQEMU_ENABLE_LOG_FATAL)
ADD_DEFINITIONS(-DEQEMU_LOG_LEVEL=${EQEMU_LOG_LEVEL})

ADD_DEFINITIONS(-DGLM_FORCE_RADIANS)
ADD_DEFINITIONS(-DGLM_FORCE_CTOR_INIT)
ADD_DEFINITIONS(-DGLM_ENABLE_EXPERIMENTAL)

#options
OPTION(EQEMU_COMMANDS_LOGGING "Enable GM Command logs" ON)
OPTION(EQEMU_BUILD_SERVER "Build the game server." ON)
OPTION(EQEMU_BUILD_LOGIN "Build the login server." ON)
OPTION(EQEMU_BUILD_HC "Build the headless client." OFF)
OPTION(EQEMU_BUILD_TESTS "Build utility tests." OFF)
OPTION(EQEMU_BUILD_CLIENT_FILES "Build Client Import/Export Data Programs." ON)
OPTION(EQEMU_PREFER_LUA "Build with normal Lua even if LuaJIT is found." OFF)

#PRNG options
OPTION(EQEMU_ADDITIVE_LFIB_PRNG "Use Additive LFib for PRNG." OFF)
MARK_AS_ADVANCED(EQEMU_ADDITIVE_LFIB_PRNG)
OPTION(EQEMU_BIASED_INT_DIST "Use biased int dist instead of uniform." OFF)
MARK_AS_ADVANCED(EQEMU_BIASED_INT_DIST)
SET(EQEMU_CUSTOM_PRNG_ENGINE "" CACHE STRING "Custom random engine. (ex. std::default_random_engine)")
MARK_AS_ADVANCED(EQEMU_CUSTOM_PRNG_ENGINE)

IF(CMAKE_COMPILER_IS_GNUCXX)
	OPTION(EQEMU_SFMT19937 "Use GCC's extention for SIMD Fast MT19937." OFF)
	MARK_AS_ADVANCED(EQEMU_SFMT19937)
ENDIF()

IF(EQEMU_ADDITIVE_LFIB_PRNG)
	ADD_DEFINITIONS(-DUSE_ADDITIVE_LFIB_PRNG)
	IF(EQEMU_SFMT19937)
		MESSAGE(STATUS "SFMT19937 and ADDITITVE_LFIB_PRNG both set, SFMT19937 ignored.")
		SET(EQEMU_SFMT19937 OFF)
	ENDIF()
	IF(NOT EQEMU_CUSTOM_PRNG_ENGINE STREQUAL "")
		MESSAGE(STATUS "CUSTOM_PRNG_ENGINE and ADDITITVE_LFIB_PRNG both set, CUSTOM_PRNG_ENGINE ignored.")
		SET(EQEMU_CUSTOM_PRNG_ENGINE "")
	ENDIF()
ENDIF()

IF(EQEMU_SFMT19937)
	ADD_DEFINITIONS(-DUSE_SFMT19937)
	IF(NOT EQEMU_CUSTOM_PRNG_ENGINE STREQUAL "")
		MESSAGE(STATUS "CUSTOM_PRNG_ENGINE and SFMT19937 both set, CUSTOM_PRNG_ENGINE ignored.")
		SET(EQEMU_CUSTOM_PRNG_ENGINE "")
	ENDIF()
ENDIF()

IF(NOT EQEMU_CUSTOM_PRNG_ENGINE STREQUAL "")
	ADD_DEFINITIONS(-DUSE_CUSTOM_PRNG_ENGINE=${EQEMU_CUSTOM_PRNG_ENGINE})
ENDIF()

IF(EQEMU_BIASED_INT_DIST)
	ADD_DEFINITIONS(-DBIASED_INT_DIST)
ENDIF()

IF(EQEMU_COMMANDS_LOGGING)
	ADD_DEFINITIONS(-DCOMMANDS_LOGGING)
ENDIF(EQEMU_COMMANDS_LOGGING)

IF(PerlLibs_FOUND)
	SET(PERL_LIBRARY_TYPE "    Perl")
	SET(PERL_LIBRARY_ENABLED ON)
	SET(PERL_LIBRARY_LIBS ${PERL_LIBRARY})
	SET(PERL_LIBRARY_INCLUDE ${PERL_INCLUDE_PATH})
ELSE()
	SET(PERL_LIBRARY_TYPE "Disabled")
	SET(PERL_LIBRARY_ENABLED OFF)
ENDIF()

MESSAGE(STATUS "")
MESSAGE(STATUS "**************************************************")
MESSAGE(STATUS "* Library Usage                                  *")
MESSAGE(STATUS "**************************************************")
MESSAGE(STATUS "* Perl:                                 ${PERL_LIBRARY_TYPE} *")
MESSAGE(STATUS "**************************************************")

# silence obnoxious deprecation message
ADD_DEFINITIONS(-DBOOST_BIND_GLOBAL_PLACEHOLDERS)

IF(EQEMU_BUILD_SERVER OR EQEMU_BUILD_LOGIN OR EQEMU_BUILD_TESTS OR EQEMU_BUILD_HC)
	ADD_SUBDIRECTORY(common)
ENDIF(EQEMU_BUILD_SERVER OR EQEMU_BUILD_LOGIN OR EQEMU_BUILD_TESTS OR EQEMU_BUILD_HC)