cmake_minimum_required(VERSION 3.10)
project(NBEngine VERSION 0.1.0 LANGUAGES C CXX)

cmake_policy(SET CMP0135 NEW)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

function(toAbsolutePath SETVAR PATHS)
    set(PATHS ${PATHS} ${ARGN})
    set(RET_VAL "")
    foreach(FILE ${PATHS})
        get_filename_component(TMP
            ${FILE}
            REALPATH
        )
        list(
            APPEND
            RET_VAL
            ${TMP}
        )
    endforeach()
    set(${SETVAR} ${RET_VAL} PARENT_SCOPE)
endfunction()

if(CMAKE_BUILD_TYPE STREQUAL "Release")
    message(STATUS "Targeting Release build")
elseif(CMAKE_BUILD_TYPE STREQUAL "Debug")
    message(STATUS "Targeting Debug build")
    set(NB_LOGGING ON)
    set(NB_BUILD_TESTS ON)
    set(NB_BUILD_DOCS ON)
    add_compile_definitions(_NB_BUILD_DEBUG)
endif()

if(CMAKE_SYSTEM_NAME STREQUAL "Windows")
    message(STATUS "Building for Windows")
    set(NB_TARGET_WINDOWS ON)
elseif(CMAKE_SYSTEM_NAME STREQUAL "Linux")
    message(STATUS "Building for Linux")
    set(NB_TARGET_LINUX ON)
endif()

if(NB_BUILD_TESTS)
    message(STATUS "Building tests")
    enable_testing()
    include(FetchContent)
    FetchContent_Declare(
        gtest
        URL https://github.com/google/googletest/archive/refs/heads/main.zip
    )
    if (WIN32)
        set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
        FetchContent_MakeAvailable(gtest)
    endif()
    set(GTEST_COLOR ON)
    set(GLFW_BUILD_TESTS ON CACHE BOOL "" FORCE)
endif()

if (NB_LOGGING)
    message(STATUS "Building with automatic logging")
    add_compile_definitions(_NB_AUTOLOG)
endif()

if (NB_TARGET_WINDOWS)
    add_compile_definitions(_NB_TARGET_WINDOWS)
elseif (NB_TARGET_LINUX)
    add_compile_definitions(_NB_TARGET_LINUX)
endif()

# External Dep paths
set(GLFW_PATH ../glfw/)
set(GLAD_PATH ../glad/)
get_filename_component(GLFW_PATH ${GLFW_PATH} ABSOLUTE)
get_filename_component(GLAD_PATH ${GLAD_PATH} ABSOLUTE)

add_subdirectory(./engine)

# Toggle
set(NB_REBUILD_DOCS)

if (NB_BUILD_DOCS)
    add_subdirectory(./docs)
endif()
