cmake_minimum_required(VERSION 3.25)

project(logmeow CXX)
set(CMAKE_C_COMPILER "clang")
set(CMAKE_CXX_COMPILER "clang++")

set(LINUX_GL_LIBS -lGL)
## ---------------------------------------------------------------------
## OPENGL ES
## ---------------------------------------------------------------------

## This assumes a GL ES library available in the system, e.g. libGLESv2.so
# set(FLAGS "${FLAGS} -DIMGUI_IMPL_OPENGL_ES2")
# set(LINUX_GL_LIBS -lGLESv2)
## If you're on a Raspberry Pi and want to use the legacy drivers,
## use the following instead:
# set(LINUX_GL_LIBS -L/opt/vc/lib -lbrcmGLESv2)

## ---------------------------------------------------------------------
## GENERIC BUILD FLAGS
## ---------------------------------------------------------------------

find_package(SDL2 REQUIRED)
find_package(Freetype 2 REQUIRED)
set(LIBS -lpcre2-8 -lpcre2-posix SDL2 imgui)
set(IMGUI_LIBS SDL2 Freetype::Freetype)

set(INCLUDES imgui imgui/backends imgui/misc/cpp imgui/freetype /usr/include/SDL2)
set(SOURCES main.cpp event_loop.cpp logcat_thread.cpp logcat_entry.cpp log.cpp config.cpp filters.cpp misc.cpp pcre2_wrapper.cpp
    group_panel.cpp windows/logs.cpp windows/settings.cpp windows/filters.cpp windows/main.cpp)
set(IMGUI_SOURCES imgui/imgui.cpp imgui/imgui_draw.cpp imgui/imgui_widgets.cpp imgui/imgui_tables.cpp
    imgui/misc/cpp/imgui_stdlib.cpp imgui/misc/freetype/imgui_freetype.cpp
    imgui/backends/imgui_impl_sdl.cpp imgui/backends/imgui_impl_opengl3.cpp)

if (CMAKE_BUILD_TYPE STREQUAL "Debug")
    set(SOURCES ${SOURCES} windows/debug.cpp)
    set(IMGUI_SOURCES ${IMGUI_SOURCES} imgui/imgui_demo.cpp)
    if ("${FLAGS}" STREQUAL "")
        set(FLAGS "-fsanitize=undefined,thread")
    endif()
endif()

set(FLAGS "${FLAGS} -DIMGUI_USER_CONFIG='\"../myimconfig.h\"'")
# https://t.me/NightShadowsHangout/670691
# https://t.me/NightShadowsHangout/688372
set(FLAGS "${FLAGS} -Werror -Wall -Wextra -Wshadow -Wpedantic -Wno-gnu-anonymous-struct -fPIC -Wconversion -Wno-unused-parameter -Wimplicit-fallthrough")
# https://sourceforge.net/p/valgrind/mailman/valgrind-users/thread/Ygze8PzaQAYWlKDj%40wildebeest.org/
set(FLAGS "${FLAGS} -gdwarf-4")

## ---------------------------------------------------------------------
## BUILD FLAGS PER PLATFORM
## ---------------------------------------------------------------------

if (LINUX)
    find_package(Fontconfig)
    set(LIBS ${LIBS} ${LINUX_GL_LIBS} -ldl)
    set(IMGUI_LIBS ${IMGUI_LIBS} ${LINUX_GL_LIBS} -ldl)
    if (Fontconfig_FOUND)
        set(FLAGS "${FLAGS} -DUSE_FONTCONFIG")
        set(LIBS ${LIBS} Fontconfig::Fontconfig)
        set(SOURCES ${SOURCES} fonts.cpp)
    endif()
elseif (APPLE)
    set(LIBS ${LIBS} -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo -L/usr/local/lib -L/opt/local/lib)
    set(INCLUDES ${INCLUDES} /usr/local/include /opt/local/include)
elseif (WIN32)
    set(LIBS ${LIBS} -lgdi32 -lopengl32 -limm32)
endif()

add_link_options(-fuse-ld=lld)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${FLAGS}")
set(CMAKE_CXX_STANDARD 20)

add_library(imgui STATIC ${IMGUI_SOURCES})
target_include_directories(imgui PRIVATE ${INCLUDES})
target_link_libraries(imgui PRIVATE ${IMGUI_LIBS})
# dear imgui has some fucky wucky with -Wconversion, hence -Wno-conversion
target_compile_options(imgui PRIVATE -Wno-conversion)

add_executable(${PROJECT_NAME} ${SOURCES})
target_include_directories(${PROJECT_NAME} PRIVATE ${INCLUDES})
target_link_libraries(${PROJECT_NAME} PRIVATE ${LIBS})