cmake_minimum_required(VERSION 3.16)
project(MyOpenGLProject)

# Set C++ standard
set(CMAKE_CXX_STANDARD 17)

# Only build on Windows
if(WIN32)

    # Use FetchContent to download GLFW and ImGui
    include(FetchContent)

    FetchContent_Declare(
      glad
      GIT_REPOSITORY https://github.com/Dav1dde/glad.git
      GIT_TAG        v2.0.7  # Latest version at the time of writing
    )
    FetchContent_MakeAvailable(glad)

    # Download GLFW
    FetchContent_Declare(
      glfw
      GIT_REPOSITORY https://github.com/glfw/glfw.git
      GIT_TAG        3.4  # Latest stable version
    )
    FetchContent_MakeAvailable(glfw)

    # Download ImGui
    FetchContent_Declare(
      imgui
      GIT_REPOSITORY https://github.com/ocornut/imgui.git
      GIT_TAG        v1.91.1  # Latest stable version
    )

    FetchContent_MakeAvailable(imgui)
        # Set up ImGui backends for GLFW and OpenGL3
    set(IMGUI_BACKENDS "${imgui_SOURCE_DIR}/backends")
    set(IMGUI_SOURCES
        ${imgui_SOURCE_DIR}/imgui.cpp
        ${imgui_SOURCE_DIR}/imgui_demo.cpp
        ${imgui_SOURCE_DIR}/imgui_draw.cpp
        ${imgui_SOURCE_DIR}/imgui_tables.cpp
        ${imgui_SOURCE_DIR}/imgui_widgets.cpp
        ${IMGUI_BACKENDS}/imgui_impl_glfw.cpp
        ${IMGUI_BACKENDS}/imgui_impl_opengl3.cpp
    )
    
    set(glad_SOURCE_DIR src/vendor/glad)

    add_library(glad ${glad_SOURCE_DIR}/src/glad.c)
    target_include_directories(glad PUBLIC ${glad_SOURCE_DIR}/include)

    set (APP_SOURCES
        src/main.cpp
    )

    # Define your executable and include ImGui and backend sources
    add_executable(MyOpenGLApp WIN32 ${APP_SOURCES} ${IMGUI_SOURCES})

    # Include directories for ImGui, GLEW, and GLFW
    target_include_directories(MyOpenGLApp PRIVATE
        ${imgui_SOURCE_DIR}
        ${IMGUI_BACKENDS}
        ${glfw_SOURCE_DIR}/include
        ${glad_SOURCE_DIR}/include
    )

    # Link against Windows-specific libraries, GLEW, GLFW, and OpenGL
    target_link_libraries(MyOpenGLApp PRIVATE
        glfw
        glad
    )

    # Define GLEW_STATIC for static linking of GLEW
    # target_compile_definitions(MyOpenGLApp PRIVATE GLEW_STATIC)

else()
    message(FATAL_ERROR "This project is only supported on Windows.")
endif()