cmake_minimum_required(VERSION 3.25)
include(FetchContent)

set(BLT_GRAPHICS_VERSION 1.0.6)
set(BLT_GRAPHICS_TEST_VERSION 0.0.1)

project(BLT_WITH_GRAPHICS VERSION ${BLT_GRAPHICS_VERSION})

option(ENABLE_ADDRSAN "Enable the address sanitizer" OFF)
option(ENABLE_UBSAN "Enable the ub sanitizer" OFF)
option(ENABLE_TSAN "Enable the thread data race sanitizer" OFF)

#option(BUILD_GRAPHICS_TESTS "Build the BLT Graphics test set" OFF)
#option(BUILD_EXAMPLE_BASIC "Build the basic example" OFF)

set(CMAKE_CXX_STANDARD 17)

if (NOT TARGET BLT)
    add_subdirectory(libraries/BLT)
endif ()

if (EMSCRIPTEN)
    message("Using emscriptem linker and compile flags!")
    #add_definitions("-std=c++17")
    set(CMAKE_VERBOSE_MAKEFILE on)
else ()
    message("Not using emscripten! (linking GLFW)")
    set(GLFW_BUILD_DOCS OFF CACHE BOOL "" FORCE)
    set(GLFW_BUILD_TESTS OFF CACHE BOOL "" FORCE)
    set(GLFW_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)

    FetchContent_Declare(glfw3
            GIT_REPOSITORY https://github.com/glfw/glfw.git
            # Release 3.4
            GIT_TAG 7b6aead9fb88b3623e3b3725ebb42670cbe4c579
            FIND_PACKAGE_ARGS)
    FetchContent_MakeAvailable(glfw3)

    find_package(OpenGL REQUIRED)
endif ()

FetchContent_Declare(freetype
        GIT_REPOSITORY https://github.com/freetype/freetype.git
        GIT_TAG VER-2-13-3
        FIND_PACKAGE_ARGS)
FetchContent_Declare(imgui
        GIT_REPOSITORY https://github.com/ocornut/imgui.git
        GIT_TAG v1.91.4
        FIND_PACKAGE_ARGS)

FetchContent_MakeAvailable(freetype)
FetchContent_MakeAvailable(imgui)

set(IMGUI_SOURCE_FILES "${imgui_SOURCE_DIR}/imgui.cpp" "${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_SOURCE_DIR}/backends/imgui_impl_opengl3.cpp" "${imgui_SOURCE_DIR}/backends/imgui_impl_glfw.cpp")

include_directories("${imgui_SOURCE_DIR}")
include_directories(include/)

file(GLOB_RECURSE PROJECT_BUILD_FILES "${CMAKE_CURRENT_SOURCE_DIR}/src/*.cpp")

add_library(BLT_WITH_GRAPHICS ${PROJECT_BUILD_FILES} ${IMGUI_SOURCE_FILES})

target_link_libraries(BLT_WITH_GRAPHICS PUBLIC BLT)
target_link_libraries(BLT_WITH_GRAPHICS PUBLIC freetype)
target_include_directories(BLT_WITH_GRAPHICS PUBLIC include/)
target_include_directories(BLT_WITH_GRAPHICS PUBLIC "${imgui_SOURCE_DIR}")

if (${ENABLE_ADDRSAN} MATCHES ON)
    target_compile_options(${PROJECT_NAME} PRIVATE -fsanitize=address)
    target_link_options(${PROJECT_NAME} PRIVATE -fsanitize=address)
endif ()

if (${ENABLE_UBSAN} MATCHES ON)
    target_compile_options(${PROJECT_NAME} PRIVATE -fsanitize=undefined)
    target_link_options(${PROJECT_NAME} PRIVATE -fsanitize=undefined)
endif ()

if (${ENABLE_TSAN} MATCHES ON)
    target_compile_options(${PROJECT_NAME} PRIVATE -fsanitize=thread)
    target_link_options(${PROJECT_NAME} PRIVATE -fsanitize=thread)
endif ()

project(BLT_WITH_GRAPHICS)

if (EMSCRIPTEN)
    #list(APPEND BLT_LINK_FLAG_TARGETS BLT_WITH_GRAPHICS)
    if (${BUILD_GRAPHICS_TESTS})
        list(APPEND BLT_LINK_FLAG_TARGETS BLT_GRAPHICS_TESTS)
    endif ()
    #set_target_properties(FinalProject PROPERTIES LINK_FLAGS "-sMAX_WEBGL_VERSION=2 -sASSERTIONS=1 -pthread -sPTHREAD_POOL_SIZE=8 -s INITIAL_MEMORY=134217728 -sUSE_GLFW=3 --preload-file 'assets'")

    include(cmake/link_flags.cmake)
    #set_target_properties(${TARGETS} PROPERTIES LINK_FLAGS "-sMAX_WEBGL_VERSION=2 -sFULL_ES2=1 -sFULL_ES3 -sASSERTIONS=1 -sUSE_GLFW=3")
    #set_property(GLOBAL PROPERTY LINK_FLAGS "-sMAX_WEBGL_VERSION=2 -sFULL_ES2=1 -sFULL_ES3 -sASSERTIONS=1 -sUSE_GLFW=3")
    #set_target_properties(BLT_WITH_GRAPHICS PROPERTIES COMPILE_FLAGS "-pthread")
else ()
    target_link_libraries(BLT_WITH_GRAPHICS PUBLIC glfw)
    target_link_libraries(BLT_WITH_GRAPHICS PUBLIC OpenGL::GL)
endif ()

include(libraries/BLT/cmake/warnings.cmake)