cmake_minimum_required(VERSION 3.25)

option(APPLICATION_NAME "Application name" "Antkeeper")
option(APPLICATION_VERSION "Application version string" "0.0.0")
option(APPLICATION_AUTHOR "Application author" "C. J. Howard")

# Slugify application name
string(TOLOWER ${APPLICATION_NAME} APPLICATION_SLUG)
string(REPLACE " " "-" APPLICATION_SLUG ${APPLICATION_SLUG})

project(${APPLICATION_SLUG} VERSION ${APPLICATION_VERSION} LANGUAGES CXX)

set(APPLICATION_VERSION_MAJOR ${PROJECT_VERSION_MAJOR})
set(APPLICATION_VERSION_MINOR ${PROJECT_VERSION_MINOR})
set(APPLICATION_VERSION_PATCH ${PROJECT_VERSION_PATCH})

# Find dependency packages
find_package(dr_wav REQUIRED CONFIG)
find_package(stb REQUIRED CONFIG)
find_package(tinyexr REQUIRED CONFIG)
find_package(glad REQUIRED CONFIG)
find_package(EnTT REQUIRED CONFIG)
find_package(OpenGL REQUIRED)
find_package(SDL2 REQUIRED CONFIG)
find_package(OpenAL REQUIRED CONFIG)
find_library(physfs REQUIRED NAMES physfs-static PATHS "${CMAKE_PREFIX_PATH}/lib")
find_package(freetype REQUIRED CONFIG)

# Determine dependencies
set(STATIC_LIBS
	dr_wav
	stb
	tinyexr
	glad
	SDL2::SDL2-static
	SDL2::SDL2main
	OpenAL::OpenAL
	${physfs}
	freetype)
set(SHARED_LIBS
	${OPENGL_gl_LIBRARY})

# Generate configuration header file
configure_file(${PROJECT_SOURCE_DIR}/src/engine/config.hpp.in ${PROJECT_BINARY_DIR}/src/engine/config.hpp)

# Collect source files
file(GLOB_RECURSE SOURCE_FILES
	${PROJECT_SOURCE_DIR}/src/*.cpp)

# Remove platform-specific source files
set(EXCLUDE_DIR "${PROJECT_SOURCE_DIR}/src/game/platform/")
foreach(TMP_PATH ${SOURCE_FILES})
	string(FIND ${TMP_PATH} ${EXCLUDE_DIR} EXCLUDE_DIR_FOUND)
	if (NOT ${EXCLUDE_DIR_FOUND} EQUAL -1)
		list(REMOVE_ITEM SOURCE_FILES ${TMP_PATH})
	endif ()
endforeach(TMP_PATH)

if(MSVC)
	# Add platform-specific source files
	list(APPEND SOURCE_FILES "${PROJECT_SOURCE_DIR}/src/game/platform/windows/nvidia.cpp")
	
	# Generate Windows icon resource file
	set(ICON_FILE "${PROJECT_SOURCE_DIR}/../antkeeper-data/src/icons/antkeeper.ico")
	if(EXISTS "${ICON_FILE}")
		configure_file(${PROJECT_SOURCE_DIR}/src/game/platform/windows/icon.rc.in ${PROJECT_BINARY_DIR}/src/game/platform/windows/icon.rc)
		list(APPEND SOURCE_FILES "${PROJECT_BINARY_DIR}/src/game/platform/windows/icon.rc")
	endif()
	
	# Generate Windows version-information resource file
	configure_file(${PROJECT_SOURCE_DIR}/src/game/platform/windows/version.rc.in ${PROJECT_BINARY_DIR}/src/game/platform/windows/version.rc)
	list(APPEND SOURCE_FILES "${PROJECT_BINARY_DIR}/src/game/platform/windows/version.rc")
	
	# Make executable DPI-aware on Windows
	list(APPEND SOURCE_FILES "${PROJECT_SOURCE_DIR}/src/game/platform/windows/dpi-aware.manifest")
endif()

# Add executable target
set(EXECUTABLE_TARGET ${APPLICATION_SLUG}-executable)
add_executable(${EXECUTABLE_TARGET} ${SOURCE_FILES})
set_target_properties(${EXECUTABLE_TARGET} PROPERTIES
	OUTPUT_NAME ${APPLICATION_SLUG}
	COMPILE_WARNING_AS_ERROR ON
	CXX_STANDARD 23
	CXX_STANDARD_REQUIRED ON
	CXX_EXTENSIONS OFF)

target_compile_definitions(${EXECUTABLE_TARGET} PRIVATE _SILENCE_CXX17_CODECVT_HEADER_DEPRECATION_WARNING)
if(MSVC)
	target_compile_options(${EXECUTABLE_TARGET} PRIVATE /W3)
	set_target_properties(${EXECUTABLE_TARGET} PROPERTIES
		LINK_FLAGS_DEBUG "/SUBSYSTEM:CONSOLE"
		LINK_FLAGS_RELEASE "/SUBSYSTEM:WINDOWS /ENTRY:\"mainCRTStartup\""
		MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
else()
	target_compile_options(${EXECUTABLE_TARGET} PRIVATE -Wall -Wextra -Wpedantic)
endif()

# Add compile definitions
if(CMAKE_BUILD_TYPE STREQUAL "Debug")
	target_compile_definitions(${EXECUTABLE_TARGET} PRIVATE DEBUG)
else()
	target_compile_definitions(${EXECUTABLE_TARGET} PRIVATE NDEBUG)
endif()

# Set include directories
target_include_directories(${EXECUTABLE_TARGET} PUBLIC
	${PROJECT_SOURCE_DIR}/src
	${PROJECT_BINARY_DIR}/src)

# Link to dependencies
target_link_libraries(${EXECUTABLE_TARGET} ${STATIC_LIBS} ${SHARED_LIBS})

# Install executable
if(PACKAGE_PLATFORM MATCHES "linux")
	install(TARGETS ${EXECUTABLE_TARGET} DESTINATION bin)
elseif(PACKAGE_PLATFORM MATCHES "win")
	install(TARGETS ${EXECUTABLE_TARGET} DESTINATION .)
endif()