CMAKE_MINIMUM_REQUIRED(VERSION 3.10)
IF(POLICY CMP0074)
	cmake_policy(SET CMP0074 NEW)
ENDIF()

#FindMySQL is located here so lets make it so CMake can find it
SET(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake/" ${CMAKE_MODULE_PATH})

#Our project name is EQEmu
PROJECT(EQEmu)

#Default build type is set to RelWithDebInfo for generators that honor that like makefiles
IF(NOT CMAKE_BUILD_TYPE)
	SET(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING "Choose the type of build." FORCE)
ENDIF(NOT CMAKE_BUILD_TYPE)

SET(CMAKE_PREFIX_PATH "${CMAKE_CURRENT_SOURCE_DIR}/dependencies" "${CMAKE_PREFIX_PATH}")

SET(CMAKE_CXX_STANDARD 14)
SET(CMAKE_CXX_STANDARD_REQUIRED ON)
SET(CMAKE_CXX_EXTENSIONS OFF)

IF(MSVC)
	ADD_DEFINITIONS(-D_CRT_SECURE_NO_WARNINGS)

	#crash logging currently only works on windows x86/x64
	OPTION(EQEMU_ENABLE_CRASH_LOGGING "Enable crash logging" ON)
	IF(EQEMU_ENABLE_CRASH_LOGGING)
		ADD_DEFINITIONS(-DCRASH_LOGGING)
	ENDIF(EQEMU_ENABLE_CRASH_LOGGING)

	OPTION(EQEMU_BUILD_MSVC_MP "Enable build with multiple processes." ON)
	IF(EQEMU_BUILD_MSVC_MP)
		SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP")
	ENDIF(EQEMU_BUILD_MSVC_MP)

	ADD_DEFINITIONS(-DNOMINMAX)
ELSE(MSVC)
	#Normally set by perl but we don't use the perl flags anymore so we set it.
	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)

#NPC Types Cache Behavior
OPTION(EQEMU_DEPOP_INVALIDATES_CACHE "#repop invalidates the npc_types cache (will cause a larger database hit on #repop but is more convienent)." ON)

#Bots are a compile time option so on/off
OPTION(EQEMU_ENABLE_BOTS "Enable Bots" OFF)

#Enable GM Command log system
OPTION(EQEMU_COMMANDS_LOGGING "Enable GM Command logs" ON)

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

IF(EQEMU_ENABLE_BOTS)
	ADD_DEFINITIONS(-DBOTS)
ENDIF(EQEMU_ENABLE_BOTS)

#What to build
OPTION(EQEMU_BUILD_SERVER "Build the game 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)

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

#Find everything we need
FIND_PACKAGE(MySQL REQUIRED)
FIND_PACKAGE(Boost REQUIRED)
FIND_PACKAGE(ZLIB)
FIND_PACKAGE(OpenSSL)
FIND_PACKAGE(Lua51)
FIND_PACKAGE(PerlLibs)
FIND_PACKAGE(Sodium)
FIND_PACKAGE(mbedTLS)

MESSAGE(STATUS "**************************************************")
MESSAGE(STATUS "* Library Detection                              *")
MESSAGE(STATUS "**************************************************")

IF(ZLIB_FOUND)
	MESSAGE(STATUS "* ZLIB:                                    FOUND *")
ELSE()
	MESSAGE(STATUS "* ZLIB:                                  MISSING *")
ENDIF()

IF(OpenSSL_FOUND)
	MESSAGE(STATUS "* OpenSSL:                                 FOUND *")
ELSE()
	MESSAGE(STATUS "* OpenSSL:                               MISSING *")
ENDIF()

IF(Lua51_FOUND)
	MESSAGE(STATUS "* Lua:                                     FOUND *")
ELSE()
	MESSAGE(STATUS "* Lua:                                   MISSING *")
ENDIF()

IF(PerlLibs_FOUND)
	MESSAGE(STATUS "* Perl:                                    FOUND *")
ELSE()
	MESSAGE(STATUS "* Perl:                                  MISSING *")
ENDIF()

IF(SODIUM_FOUND)
	MESSAGE(STATUS "* libsodium:                               FOUND *")
ELSE()
	MESSAGE(STATUS "* libsodium:                             MISSING *")
ENDIF()

IF(MBEDTLS_FOUND)
	MESSAGE(STATUS "* mbedTLS:                                 FOUND *")
ELSE()
	MESSAGE(STATUS "* mbedTLS:                               MISSING *")
ENDIF()

MESSAGE(STATUS "**************************************************")

SET(SERVER_LIBS common debug ${MySQL_LIBRARY_DEBUG} optimized ${MySQL_LIBRARY_RELEASE} ${Boost_LIBRARIES} uv_a fmt RecastNavigation::Detour)

IF(WIN32)
	SET(SERVER_LIBS ${SERVER_LIBS} "ws2_32" "psapi" "iphlpapi" "userenv")
ENDIF()

IF(UNIX)
	SET(SERVER_LIBS ${SERVER_LIBS} ${CMAKE_DL_LIBS} "z" "m" "pthread")
	IF(NOT DARWIN)
		SET(SERVER_LIBS ${SERVER_LIBS} "rt")
	ENDIF()
	SET(SERVER_LIBS ${SERVER_LIBS} "uuid")
ENDIF()

IF(ZLIB_FOUND)
	OPTION(EQEMU_BUILD_ZLIB "Build internal version of zlib." OFF)
	
	IF(EQEMU_BUILD_ZLIB)
		INCLUDE_DIRECTORIES(SYSTEM "${CMAKE_CURRENT_SOURCE_DIR}/submodules/zlibng")
		SET(SERVER_LIBS ${SERVER_LIBS} "zlibstatic")
	ELSE()
		INCLUDE_DIRECTORIES(SYSTEM "${ZLIB_INCLUDE_DIRS}")
		SET(SERVER_LIBS ${SERVER_LIBS} ${ZLIB_LIBRARY})
	ENDIF()
ELSE()
	INCLUDE_DIRECTORIES(SYSTEM "${CMAKE_CURRENT_SOURCE_DIR}/submodules/zlibng")
	SET(SERVER_LIBS ${SERVER_LIBS} "zlibstatic")
ENDIF()

IF(PerlLibs_FOUND)
	OPTION(EQEMU_BUILD_PERL "Build Perl parser." ON)
	IF(EQEMU_BUILD_PERL)
		INCLUDE_DIRECTORIES(SYSTEM "${PERL_INCLUDE_PATH}")
		SET(SERVER_LIBS ${SERVER_LIBS} "${PERL_LIBRARY}")
		ADD_DEFINITIONS(-DEMBPERL)
		ADD_DEFINITIONS(-DEMBPERL_PLUGIN)
	ENDIF(EQEMU_BUILD_PERL)
ENDIF()

IF(Lua51_FOUND)
	OPTION(EQEMU_BUILD_LUA "Build Lua parser." ON)
	
	IF(EQEMU_BUILD_LUA)
		INCLUDE_DIRECTORIES(SYSTEM "${LUA_INCLUDE_DIR}")
		INCLUDE_DIRECTORIES(SYSTEM "${CMAKE_CURRENT_SOURCE_DIR}/libs/luabind")
		SET(SERVER_LIBS ${SERVER_LIBS} "${LUA_LIBRARY}" luabind)
		ADD_DEFINITIONS(-DLUA_EQEMU)
		
		OPTION(EQEMU_SANITIZE_LUA_LIBS "Sanitize Lua Libraries (Remove OS and IO standard libraries from being able to run)." ON)
		IF(EQEMU_SANITIZE_LUA_LIBS)
			ADD_DEFINITIONS(-DSANITIZE_LUA_LIBS)
		ENDIF(EQEMU_SANITIZE_LUA_LIBS)
	ENDIF(EQEMU_BUILD_LUA)
ENDIF()

IF(OpenSSL_FOUND OR MBEDTLS_FOUND)
	OPTION(EQEMU_BUILD_LOGIN "Build the login server." ON)
	
	IF(OpenSSL_FOUND AND MBEDTLS_FOUND)
		SET(EQEMU_CRYPTO_LIB mbedTLS CACHE STRING "Crypto library to use:
			OpenSSL
			mbedTLS"
		)
		
		IF(EQEMU_CRYPTO_LIB STREQUAL "OpenSSL")
			INCLUDE_DIRECTORIES(SYSTEM "${OPENSSL_INCLUDE_DIR}")
			SET(SERVER_LIBS ${SERVER_LIBS} ${OPENSSL_LIBRARIES})
			ADD_DEFINITIONS(-DEQEMU_USE_OPENSSL)
		ELSEIF(EQEMU_CRYPTO_LIB STREQUAL "mbedTLS")
			INCLUDE_DIRECTORIES(SYSTEM "${MBEDTLS_INCLUDE_DIR}")
			SET(SERVER_LIBS ${SERVER_LIBS} ${MBEDTLS_LIBRARY} ${MBEDX509_LIBRARY} ${MBEDCRYPTO_LIBRARY})
			ADD_DEFINITIONS(-DEQEMU_USE_MBEDTLS)
		ELSE()
			MESSAGE(FATAL_ERROR "Unknown crypto library set, must be one of these: mbedTLS, OpenSSL")
		ENDIF()
		
	ELSEIF(OpenSSL_FOUND)
		INCLUDE_DIRECTORIES(SYSTEM "${OPENSSL_INCLUDE_DIR}")
		SET(SERVER_LIBS ${SERVER_LIBS} ${OPENSSL_LIBRARIES})
		ADD_DEFINITIONS(-DEQEMU_USE_OPENSSL)
	ELSEIF(MBEDTLS_FOUND)
		INCLUDE_DIRECTORIES(SYSTEM "${MBEDTLS_INCLUDE_DIR}")
		SET(SERVER_LIBS ${SERVER_LIBS} ${MBEDTLS_LIBRARY} ${MBEDX509_LIBRARY} ${MBEDCRYPTO_LIBRARY})
		ADD_DEFINITIONS(-DEQEMU_USE_MBEDTLS)
	ENDIF()
ENDIF()

IF(SODIUM_FOUND AND EQEMU_BUILD_LOGIN)
	OPTION(EQEMU_ENABLE_SECURITY "Use libsodium for stronger password hashing" ON)
	IF(EQEMU_ENABLE_SECURITY)
		INCLUDE_DIRECTORIES(SYSTEM "${SODIUM_INCLUDE_DIRS}")
		SET(SERVER_LIBS ${SERVER_LIBS} ${SODIUM_LIBRARIES})
		ADD_DEFINITIONS(-DENABLE_SECURITY)
	ENDIF()
ENDIF()

INCLUDE_DIRECTORIES(SYSTEM "${MySQL_INCLUDE_DIR}")
INCLUDE_DIRECTORIES(SYSTEM "${Boost_INCLUDE_DIRS}")
INCLUDE_DIRECTORIES(SYSTEM "${CMAKE_CURRENT_SOURCE_DIR}/submodules/glm")
INCLUDE_DIRECTORIES(SYSTEM "${CMAKE_CURRENT_SOURCE_DIR}/submodules/cereal/include")
INCLUDE_DIRECTORIES(SYSTEM "${CMAKE_CURRENT_SOURCE_DIR}/submodules/fmt/include")
INCLUDE_DIRECTORIES(SYSTEM "${CMAKE_CURRENT_SOURCE_DIR}/submodules/libuv/include" )
INCLUDE_DIRECTORIES(SYSTEM "${CMAKE_CURRENT_SOURCE_DIR}/submodules/recastnavigation/DebugUtils/Include")
INCLUDE_DIRECTORIES(SYSTEM "${CMAKE_CURRENT_SOURCE_DIR}/submodules/recastnavigation/Detour/Include")
INCLUDE_DIRECTORIES(SYSTEM "${CMAKE_CURRENT_SOURCE_DIR}/submodules/recastnavigation/DetourCrowd/Include")
INCLUDE_DIRECTORIES(SYSTEM "${CMAKE_CURRENT_SOURCE_DIR}/submodules/recastnavigation/DetourTileCache/Include")
INCLUDE_DIRECTORIES(SYSTEM "${CMAKE_CURRENT_SOURCE_DIR}/submodules/recastnavigation/Recast/Include")
INCLUDE_DIRECTORIES(SYSTEM "${CMAKE_CURRENT_SOURCE_DIR}/submodules/websocketpp")

IF(EQEMU_BUILD_SERVER OR EQEMU_BUILD_LOGIN OR EQEMU_BUILD_TESTS OR EQEMU_BUILD_HC)
	ADD_SUBDIRECTORY(common)
	ADD_SUBDIRECTORY(libs)
	ADD_SUBDIRECTORY(submodules/fmt)
	ADD_SUBDIRECTORY(submodules/libuv)
	
	IF(EQEMU_BUILD_ZLIB)
		SET(ZLIB_COMPAT ON CACHE BOOL "Compile with zlib compatible API")
		SET(ZLIB_ENABLE_TESTS OFF CACHE BOOL "Build test binaries")
		ADD_SUBDIRECTORY(submodules/zlibng)
	ENDIF()
	
	SET(RECASTNAVIGATION_DEMO OFF CACHE BOOL "Build demo")
	SET(RECASTNAVIGATION_TESTS OFF CACHE BOOL "Build tests")
	SET(RECASTNAVIGATION_EXAMPLES OFF CACHE BOOL "Build examples")
	ADD_SUBDIRECTORY(submodules/recastnavigation)
ENDIF(EQEMU_BUILD_SERVER OR EQEMU_BUILD_LOGIN OR EQEMU_BUILD_TESTS OR EQEMU_BUILD_HC)
IF(EQEMU_BUILD_SERVER)
	ADD_SUBDIRECTORY(shared_memory)
	ADD_SUBDIRECTORY(world)
	ADD_SUBDIRECTORY(zone)
	ADD_SUBDIRECTORY(ucs)
	ADD_SUBDIRECTORY(queryserv)
	ADD_SUBDIRECTORY(eqlaunch)
ENDIF(EQEMU_BUILD_SERVER)
IF(EQEMU_BUILD_LOGIN)
	ADD_SUBDIRECTORY(loginserver)
ENDIF(EQEMU_BUILD_LOGIN)

IF(EQEMU_BUILD_HC)
	ADD_SUBDIRECTORY(hc)
ENDIF(EQEMU_BUILD_HC)

IF(EQEMU_BUILD_TESTS)
	ADD_SUBDIRECTORY(tests)
ENDIF(EQEMU_BUILD_TESTS)

IF(EQEMU_BUILD_CLIENT_FILES)
	ADD_SUBDIRECTORY(client_files)
ENDIF(EQEMU_BUILD_CLIENT_FILES)