cmake_minimum_required(VERSION 3.19 FATAL_ERROR)
project(BillySheet LANGUAGES CXX C)

#set(GLEW_USE_STATIC_LIBS ON)
find_package(OpenGL REQUIRED)
find_package(GLEW REQUIRED)

find_package(Boost REQUIRED COMPONENTS stacktrace_addr2line)

include_directories(${Boost_INCLUDE_DIR})

file(GLOB_RECURSE SOURCE_HEADERS
     include/*.h
     include/*.hpp
     external/ImFileDialog/*.h
)

file(GLOB_RECURSE SOURCE_FILES
     src/*.cpp
     external/ImFileDialog/ImFileDialog.cpp
)

set(SOURCES
    ${SOURCE_HEADERS}
    ${SOURCE_FILES})

find_program(CCACHE_FOUND ccache)
if (CCACHE_FOUND)
    message(STATUS "ccache found !")
    set_property(GLOBAL PROPERTY C_COMPILER_LAUNCHER ccache)
    set_property(GLOBAL PROPERTY C_LINKER_LAUNCHER ccache)
    set_property(GLOBAL PROPERTY CXX_COMPILER_LAUNCHER ccache)
    set_property(GLOBAL PROPERTY CXX_LINKER_LAUNCHER ccache)
else ()
    message(STATUS "ccache not found")
endif ()

option(BUILD_SHARED_LIBS "Build shared libraries" OFF)
option(GLFW_BUILD_EXAMPLES "Build the GLFW example programs" OFF)
option(GLFW_BUILD_TESTS "Build the GLFW test programs" OFF)
option(GLFW_BUILD_DOCS "Build the GLFW documentation" OFF)
option(GLFW_INSTALL "Generate installation target" OFF)
option(GLFW_VULKAN_STATIC "Assume the Vulkan loader is linked with the application" OFF)
add_subdirectory(external/glfw)

option(SPDLOG_ENABLE_PCH "Build static or shared library using precompiled header to speed up compilation time" ON)
option(SPDLOG_BUILD_WARNINGS "Enable compiler warnings" ON)
option(SPDLOG_PREVENT_CHILD_FD "Prevent from child processes to inherit log file descriptors" ON)
option(SPDLOG_NO_THREAD_ID "prevent spdlog from querying the thread id on each log call if thread id is not needed" ON)
option(SPDLOG_NO_TLS "prevent spdlog from using thread local storage" ON)
option(SPDLOG_NO_ATOMIC_LEVELS "prevent spdlog from using of std::atomic log levels (use only if your code never modifies log levels concurrently" ON)
add_subdirectory(external/spdlog)

set(JSON_BuildTests OFF CACHE INTERNAL "")
option(JSON_ImplicitConversions "Enable implicit conversions." OFF)
option(JSON_SystemInclude "Include as system headers (skip for clang-tidy)." ON)
add_subdirectory(external/json)

option(CATCH_INSTALL_DOCS "Install documentation alongside library" OFF)
option(CATCH_INSTALL_EXTRAS "Install extras alongside library" OFF)
add_subdirectory(external/catch2)


set(COMPILE_FLAGS
    -pipe
    -march=znver3 # change to native or your architecture.
    -mtune=znver3 # same as above
    -mrdseed # be careful about this, this is linked to the x86 architecture.
    -mrdrnd # same as above
    -Wall
    -Wextra
    -Wpedantic
    #	-Wpadded
    -pedantic
    -ffunction-sections
    -fdata-sections
    -fuse-ld=gold
    -funroll-loops
    -fdevirtualize-at-ltrans
    -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free
)
set(LINKER_OPTIONS
    -Wl,--sort-common,--as-needed,--gc-sections,--strip-all
    -fuse-ld=gold
    -fdevirtualize-at-ltrans
)

set(LINKER_FLAGS
    jemalloc
)

option(ENABLE_COVERAGE "Enabling coverage" OFF)

if (${ENABLE_COVERAGE})
    message(STATUS "Coverage enabled")
    list(APPEND COMPILE_FLAGS --coverage)
    list(APPEND LINKER_OPTIONS --coverage)
    list(APPEND LINKER_FLAGS gcov)
endif ()

add_subdirectory("Unit testing")

add_executable(BillySheet ${SOURCES})

target_include_directories(BillySheet PRIVATE include include/imgui external/ImFileDialog)

set_target_properties(BillySheet spdlog PROPERTIES
                      CXX_STANDARD 17
                      CXX_STANDARD_REQUIRED ON
                      CXX_EXTENSIONS OFF
                      INTERPROCEDURAL_OPTIMIZATION ON
                      # UNITY_BUILD ON
)

set_target_properties(spdlog PROPERTIES UNITY_BUILD ON)

set_target_properties(glfw PROPERTIES
                      C_STANDARD 11
                      C_STANDARD_REQUIRED ON
                      C_EXTENSIONS OFF
                      INTERPROCEDURAL_OPTIMIZATION ON
                      UNITY_BUILD ON
)

set_target_properties(spdlog PROPERTIES UNITY_BUILD ON)

target_compile_definitions(BillySheet PRIVATE
                           $<$<CONFIG:Debug>:_GLIBCXX_DEBUG>
                           $<$<CONFIG:Debug>:SPDLOG_ACTIVE_LEVEL=SPDLOG_LEVEL_DEBUG>
                           $<$<CONFIG:Release>:SPDLOG_ACTIVE_LEVEL=SPDLOG_LEVEL_ERROR>)

target_compile_definitions(spdlog PRIVATE
                           $<$<CONFIG:Debug>:_GLIBCXX_DEBUG>)

target_compile_definitions(glfw PRIVATE
                           $<$<CONFIG:Debug>:_GLIBCXX_DEBUG>)

target_compile_options(spdlog PRIVATE ${COMPILE_FLAGS})
target_compile_options(glfw PRIVATE ${COMPILE_FLAGS})
target_compile_options(BillySheet PRIVATE ${COMPILE_FLAGS})

target_link_options(spdlog PRIVATE ${LINKER_OPTIONS})
target_link_options(glfw PRIVATE ${LINKER_OPTIONS})
target_link_options(BillySheet PRIVATE ${LINKER_OPTIONS})

target_link_libraries(spdlog PRIVATE ${LINKER_FLAGS})
target_link_libraries(glfw PRIVATE ${LINKER_FLAGS})
target_link_libraries(BillySheet glfw spdlog::spdlog_header_only OpenGL::OpenGL GLEW::GLEW nlohmann_json::nlohmann_json ${Boost_LIBRARIES} ${LINKER_FLAGS})