cmake_minimum_required(VERSION 3.2 FATAL_ERROR)
project(ChatlabGame)

# Add .lib files
link_directories(${CMAKE_SOURCE_DIR}/lib)

# Configure assets header file
configure_file(src/helpers/RootDir.h.in src/helpers/RootDir.h)
include_directories(${CMAKE_BINARY_DIR}/src)

# Define source files
file(GLOB_RECURSE SOURCES RELATIVE ${CMAKE_SOURCE_DIR} "src/*.cpp")
file(GLOB_RECURSE HEADERS RELATIVE ${CMAKE_SOURCE_DIR} "src/*.h")

# Define the executable
add_executable(${PROJECT_NAME} ${HEADERS} ${SOURCES})

include_directories(
        "${CMAKE_SOURCE_DIR}/src"
        "${CMAKE_SOURCE_DIR}/lib"
)

# We need a CMAKE_DIR with some code to find external dependencies
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/lib/")

# glfw
add_subdirectory(lib/glfw EXCLUDE_FROM_ALL)

# glew
add_subdirectory(lib/glew EXCLUDE_FROM_ALL)
target_include_directories(${PROJECT_NAME} PRIVATE
        ${CMAKE_SOURCE_DIR}/lib/glew/include
        )
FIND_PACKAGE(GLEW)

# Put all libraries into a variable
set(LIBS glfw GL GLEW)

# Define the include DIRs
include_directories(
        "${CMAKE_SOURCE_DIR}/src"
        "${CMAKE_SOURCE_DIR}/include"
)

# Define the link libraries
target_link_libraries(${PROJECT_NAME} ${LIBS})

set_property(TARGET ${PROJECT_NAME} PROPERTY CXX_STANDARD 20)


# Create virtual folders to make it look nicer in VS
if (MSVC_IDE)
    # Macro to preserve source files hierarchy in the IDE
    macro(GroupSources curdir)
        file(GLOB children RELATIVE ${PROJECT_SOURCE_DIR}/${curdir} ${PROJECT_SOURCE_DIR}/${curdir}/*)

        foreach (child ${children})
            if (IS_DIRECTORY ${PROJECT_SOURCE_DIR}/${curdir}/${child})
                GroupSources(${curdir}/${child})
            else ()
                string(REPLACE "/" "\\" groupname ${curdir})
                string(REPLACE "src" "Sources" groupname ${groupname})
                source_group(${groupname} FILES ${PROJECT_SOURCE_DIR}/${curdir}/${child})
            endif ()
        endforeach ()
    endmacro()

    # Run macro
    GroupSources(src)
endif ()

# Copy dlls
if (WIN32)
    add_custom_command(TARGET ${PROJECT_NAME} POST_BUILD
            COMMAND ${CMAKE_COMMAND} -E copy_directory
            "${PROJECT_SOURCE_DIR}/dlls"
            $<TARGET_FILE_DIR:${PROJECT_NAME}>)
endif ()