cmake_minimum_required(VERSION 4.0)
project(sdl_project)
set(CMAKE_C_STANDARD 23)

# Include the command that downloads libraries
include(FetchContent)

# define a function for adding git dependencies
function(include_dependency libName gitURL gitTag)
    FetchContent_Declare(${libName}
            GIT_REPOSITORY ${gitURL}
            GIT_TAG        ${gitTag}
            GIT_SHALLOW    TRUE
            GIT_PROGRESS   TRUE
    )
    FetchContent_MakeAvailable(${libName})
endfunction()

# add SDL2 support
find_package(SDL2 QUIET)
if (NOT SDL2_FOUND)
    message(STATUS "Getting SDL2 from Github")
    include_dependency(SDL2 https://github.com/libsdl-org/SDL.git release-2.30.8)
else()
    message(STATUS "Using local SDL2")
endif()

# add SDL2_image support
find_package(SDL2_image QUIET)
if (NOT SDL2_image_FOUND)
    message(STATUS "Getting SDL2_image from Github")
    include_dependency(SDL2_image https://github.com/libsdl-org/SDL_image.git release-2.8.2)
else()
    message(STATUS "Using local SDL2_image")
endif()

## add SDL2_gfx support (NO find_package, fetch and add it manually)
#find_package(SDL2_gfx QUIET)
#if (NOT SDL2_gfx)
#    message(STATUS "Getting SDL2_gfx from Github")
#    include_dependency(SDL2_gfx https://github.com/giroletm/SDL2_gfx.git release-1.0.4)
#else()
#    message(STATUS "Using local SDL2_gfx")
#endif()

# SDL2_gfx (DO NOT use the function for this one)
FetchContent_Declare(
        SDL2_gfx
        GIT_REPOSITORY https://github.com/giroletm/SDL2_gfx.git
        GIT_TAG master
)
FetchContent_MakeAvailable(SDL2_gfx)
message(STATUS "sdl2_gfx_SOURCE_DIR is: ${sdl2_gfx_SOURCE_DIR}")
add_library(SDL2_gfx STATIC
        ${sdl2_gfx_SOURCE_DIR}/SDL2_gfxPrimitives.c
        ${sdl2_gfx_SOURCE_DIR}/SDL2_rotozoom.c
)

target_include_directories(SDL2_gfx PUBLIC ${sdl2_gfx_SOURCE_DIR}/sdl2_gfx-src)
target_link_libraries(SDL2_gfx PUBLIC SDL2::SDL2)

# add SDL2_ttf support
#set(SDL2TTF_VENDORED ON)
#find_package(SDL2_ttf QUIET)
#if (NOT SDL2_ttf_FOUND)
#    message(STATUS "Getting SDL2_ttf from Github")
#    include_dependency(SDL2_ttf https://github.com/libsdl-org/SDL_ttf.git release-2.22.0)
#else()
#    message(STATUS "Using local SDL2_ttf")
#endif()

add_executable(${PROJECT_NAME} scripts/main.c
        scripts/array.c
        scripts/vector.c
        scripts/matrix.c
        scripts/mesh.c
        scripts/triangle.c
        scripts/light.c
        scripts/texture.c
        scripts/swap.c
        scripts/upng.c
        scripts/display.c
)

# Target include directories for non-gfx libs
target_include_directories(
        ${PROJECT_NAME}
        PUBLIC
        ${SDL2_INCLUDE_DIRS}
        ${SDL2_IMAGE_INCLUDE_DIRS}
#        ${SDL2_TTF_INCLUDE_DIRS}
        ${sdl2_gfx_SOURCE_DIR}    # Add SDL2_gfx headers directory
)

# link all libraries to the project
target_link_libraries(
        ${PROJECT_NAME}
        PRIVATE
        SDL2::SDL2
        SDL2::SDL2main
        SDL2_image::SDL2_image
#        SDL2_ttf::SDL2_ttf
        SDL2_gfx                 # Link in the SDL2_gfx library we added
)

if (WIN32)
    add_custom_command(
            TARGET ${PROJECT_NAME} POST_BUILD
            COMMAND "${CMAKE_COMMAND}" -E copy_if_different "$<TARGET_FILE:SDL2::SDL2>" "$<TARGET_FILE_DIR:sdl_project>"
            COMMAND "${CMAKE_COMMAND}" -E copy_if_different "$<TARGET_FILE:SDL2_image::SDL2_image>" "$<TARGET_FILE_DIR:sdl_project>"
            #COMMAND "${CMAKE_COMMAND}" -E copy_if_different "$<TARGET_FILE:SDL2_ttf::SDL2_ttf>" "$<TARGET_FILE_DIR:sdl_project>"
            VERBATIM
    )
endif()