# Copyright (c) 2021 Dominic Msters
# 
# This software is released under the MIT License.
# https://opensource.org/licenses/MIT

#################################### CMAKE #####################################
cmake_minimum_required(VERSION 3.13)
set(CMAKE_C_STANDARD 99)
set(CMAKE_C_STANDARD_REQUIRED ON)

#Include
include(FetchContent)

################################ Setting Defs ##################################
set(SETTING_PLATFORM_GLFW 1)
set(SETTING_PLATFORM_SDL 2)

# Game Settings
set(SETTING_GAME_POKER 1)
set(SETTING_GAME_DAWN 2)
set(SETTING_GAME_SANDBOX 3)

set(SETTING_GAME SETTING_GAME_SANDBOX)
set(SETTING_GAME_NAME "DawnGame")

################################## Targets #####################################
set(SETTING_TARGET_WIN32 1)
set(SETTING_TARGET_RG351 2)

set(SETTING_TARGET SETTING_TARGET_WIN32)

# Win32
if(${SETTING_TARGET} EQUAL ${SETTING_TARGET_WIN32})
  set(SETTING_PLATFORM SETTING_PLATFORM_GLFW)
  set(SETTING_PLATFORM_USE_GLAD 1)
  set(SETTING_ASSET_PREFIX "../assets/")
endif()

# RG351
if(${SETTING_TARGET} EQUAL ${SETTING_TARGET_RG351})
  set(SETTING_PLATFORM SETTING_PLATFORM_SDL)
  set(SETTING_PLATFORM_USE_GLAD 1)
  set(SETTING_ASSET_PREFIX "assets/")
endif()

# Configuring
configure_file(config.h.in config.h)
set(DEPS_DIR "${PROJECT_BINARY_DIR}/_deps/${SETTING_TARGET}")

#################################### PROJECT ###################################
project(${SETTING_GAME_NAME} VERSION 1.0)

##################################### SRCS #####################################
file(GLOB_RECURSE SOURCE_FILES ${CMAKE_SOURCE_DIR}/src/*.c)
file(GLOB_RECURSE HEADER_FILES ${CMAKE_SOURCE_DIR}/src/*.h)

# GLFW Sources
if(${SETTING_PLATFORM} EQUAL ${SETTING_PLATFORM_GLFW})
  file(GLOB_RECURSE SRC ${CMAKE_SOURCE_DIR}/platform/glfw/*.c)
  file(GLOB_RECURSE HDRS ${CMAKE_SOURCE_DIR}/platform/glfw/*.h)
  list(APPEND SOURCE_FILES ${SRC})
  list(APPEND HEADER_FILES ${HDRS})
endif()

# SDL Sources
if(${SETTING_PLATFORM} EQUAL ${SETTING_PLATFORM_SDL})
  file(GLOB_RECURSE SRC ${CMAKE_SOURCE_DIR}/platform/sdl/*.c)
  file(GLOB_RECURSE HDRS ${CMAKE_SOURCE_DIR}/platform/sdl/*.h)
  list(APPEND SOURCE_FILES ${SRC})
  list(APPEND HEADER_FILES ${HDRS})
endif()

#################################### ASSETS ####################################
set(SCRIPT_FILES scripts.js)
add_custom_command(
  OUTPUT ${SCRIPT_FILES}
  COMMAND npm run build
  DEPENDS ${SOURCE_FILES}
  WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)

file(COPY ${CMAKE_CURRENT_LIST_DIR}/assets DESTINATION ${CMAKE_CURRENT_BINARY_DIR})

##################################### LIBS #####################################
include_directories(${CMAKE_SOURCE_DIR}/lib/stb)

# RG351
if(${SETTING_TARGET} EQUAL ${SETTING_TARGET_RG351})
  include_directories(${CMAKE_SOURCE_DIR}/include/rg351)
  include_directories(${CMAKE_SOURCE_DIR}/include/rg351/SDL2)
endif()

include_directories(${CMAKE_CURRENT_BINARY_DIR})

################################## EXECUTABLE ##################################
add_executable(${PROJECT_NAME} ${HEADER_FILES} ${SOURCE_FILES} ${SCRIPT_FILES})

################################# STATIC LIBS ##################################
# Math
if(NOT WIN32)
  target_link_libraries(${PROJECT_NAME} m)
endif()

# GLAD
if(${SETTING_PLATFORM_USE_GLAD} EQUAL 1)
  add_subdirectory(${CMAKE_SOURCE_DIR}/lib/glad)
  target_link_libraries(${PROJECT_NAME} glad)
endif()

# GLFW
if(${SETTING_PLATFORM} EQUAL ${SETTING_PLATFORM_GLFW})
  if(NOT glfw3_FOUND)
    FetchContent_Declare(
      glfw
      GIT_REPOSITORY https://github.com/glfw/glfw
      GIT_TAG 3.3.4
    )
    FetchContent_MakeAvailable(glfw)
  endif()
  target_link_libraries(${PROJECT_NAME} glfw)
endif()

# SDL
if(${SETTING_PLATFORM} EQUAL ${SETTING_PLATFORM_SDL})
  find_package(SDL2 REQUIRED)
  include_directories(${SDL2_INCLUDE_DIRS})
  target_link_libraries(${PROJECT_NAME} ${SDL2_LIBRARIES})
endif()

# CGLM
if(NOT cglm_FOUND)
  FetchContent_Declare(
    cglm
    GIT_REPOSITORY https://github.com/recp/cglm
    GIT_TAG v0.8.3
  )
  FetchContent_MakeAvailable(cglm)
endif()
target_link_libraries(${PROJECT_NAME} cglm)

# Duktape
add_subdirectory(${CMAKE_SOURCE_DIR}/lib/duktape)
target_link_libraries(${PROJECT_NAME} duktape)

# OpenGL
find_package(OpenGL REQUIRED)

if(${SETTING_TARGET} EQUAL ${SETTING_TARGET_RG351})
  target_link_libraries(${PROJECT_NAME} OpenGL::OpenGL)
else()
  target_link_libraries(${PROJECT_NAME} OpenGL::GL)
endif()


# CMake
target_link_libraries(${PROJECT_NAME} ${CMAKE_DL_LIBS})