cmake_minimum_required(VERSION 3.18)

set(CMAKE_CXX_STANDARD 23)
include_guard(GLOBAL)

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR arm)

set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC OFF)

# set(TARGET_SYSROOT /home/nikita/rpi/rpi-sysroot)
# set(TARGET_SYSROOT /home/nikita/rpi/rpi_zero-sysroot)
set(TARGET_SYSROOT /home/nikita/rpi/radxa-sysroot)
set(CMAKE_SYSROOT ${TARGET_SYSROOT})
message("CMAKE_SYSROOT: ${CMAKE_SYSROOT}")
set(CMAKE_LIBRARY_PATH ${CMAKE_SYSROOT}/usr/lib/aarch64-linux-gnu)

# arch:
set(ENV{PKG_CONFIG_PATH} $PKG_CONFIG_PATH:/usr/lib/aarch64-linux-gnu/pkgconfig)
# gentoo:
# set(ENV{PKG_CONFIG_PATH} $PKG_CONFIG_PATH:/usr/lib/aarch64-rpi5-linux-gnu/pkgconfig)
set(ENV{PKG_CONFIG_LIBDIR} /usr/lib/pkgconfig:/usr/share/pkgconfig/:${CMAKE_SYSROOT}/usr/lib/aarch64-linux-gnu/pkgconfig:${CMAKE_SYSROOT}/usr/lib/pkgconfig)
set(ENV{PKG_CONFIG_SYSROOT_DIR} ${CMAKE_SYSROOT})

set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -I${CMAKE_SYSROOT}/usr/include")
set(CMAKE_CXX_FLAGS "${CMAKE_C_FLAGS}")


# NOTE: /aarch64-none-linux-gnu/bin/ld: cannot find -lm: No such file or directory
# DOESN'T WORK sudo apt install build-essential

# NOTE: in case of header issues during inno-maker driver compilation - try to
# reinstall linux-headers-<your exact running kernel version here>, like this
# sudo apt install linux-headers-6.6.74+rpt-rpi-v8 --reinstall

# NOTE: on your rpi you'll need to install
# libcamera-dev, libcamera-ipa (TODO: check if ipa is needed)
# libqt6gui6
# libqt6quickcontrols2-6
# qt6-declarative-dev*
# qt6-websockets-dev
# pigpio-tools
# fakeroot
# libqt6httpserver6
# libqt6serialport6 (if you want to control your 3d printer from rpi)
# libtbb-dev (or just comment out source code related to execution policies)
# libpistache-dev - TODO: remove this dep, orpheus uses qt http server
# don't forget to rsync local copy of rpi fs with real rpi fs
# NOTE: to be able to run orpheus remotely from QtCreator, run this on your RPI:
# $ sudo chown -R user:adm /usr/local/bin/

# NOTE: to use rotary encoder you'll need WiringPi which is not in rpi repos, so
# $ sudo apt install git
# $ git clone https://github.com/WiringPi/WiringPi.git
# check README.md for installation instructions.
# $ sudo apt install fakeroot
# $ cd WiringPi
# $ ./build debian
# $ mv debian-template/*.deb .
# $ sudo apt install ./*.deb
# You may get this while installing .deb package, but it's ok:
# N: Download is performed unsandboxed as root as file
# '/home/user/git/third_party/WiringPi/wiringpi_3.12_arm64.deb' couldn't be
# accessed by user '_apt'. - pkgAcquire::Run (13: Permission denied)
# run rsyng and cmake again

# NOTE: I've added ld symlink on host to be able to run moc
# arch:
# sudo ln -s /usr/aarch64-linux-gnu/lib/ld-linux-aarch64.so.1 /lib/ld-linux-aarch64.so.1
# gentoo:
# sudo ln -s /usr/aarch64-rpi5-linux-gnu/lib/ld-linux-aarch64.so.1 /lib/ld-linux-aarch64.so.1
#
# TODO: check how to add this env var to cmake, it's needed to run moc,
# otherwise you'll get the following error
#
# ...../rpi-sysroot/usr/lib/qt6/libexec/moc: error while loading shared libraries:
# libpcre2-16.so.0: cannot open shared object file: No such file or directory
#
# export this path for qtcreator:
# LD_LIBRARY_PATH=/home/nikita/rpi/rpi-sysroot/usr/lib/aarch64-linux-gnu/:$LD_LIBRARY_PATH
set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT}/usr)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
set(CMAKE_BUILD_RPATH ${CMAKE_SYSROOT})

find_package(PkgConfig REQUIRED)
pkg_check_modules(LIBCAMERA REQUIRED IMPORTED_TARGET libcamera)
find_library(LIBCAMERA_LIBRARY libcamera.so REQUIRED)
find_library(LIBCAMERA_BASE_LIBRARY libcamera-base.so REQUIRED)
message(STATUS ${CAMERA_INCLUDE_DIRS})
message(STATUS ${LIBCAMERA_LIBRARY})
message(STATUS ${LIBCAMERA_BASE_LIBRARY})
pkg_check_modules(CAMERA REQUIRED libcamera)
set(LIBCAMERA_LIBRARIES "${LIBCAMERA_LIBRARY}" "${LIBCAMERA_BASE_LIBRARY}")
project(orpheus LANGUAGES CXX)
find_package(OpenMP)
if (OPENMP_FOUND)
    message("found openmp")
    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
    set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
    set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${OpenMP_EXE_LINKER_FLAGS}")
endif()

set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_STANDARD 23)
set(CMAKE_CXX20_STANDARD_COMPILE_OPTION "-std:c++latest")
set(CMAKE_CXX20_EXTENSION_COMPILE_OPTION "-std:c++latest")

find_package(Qt6 6.4 REQUIRED COMPONENTS Gui Quick HttpServer SerialPort)

find_package(TBB REQUIRED)

qt_standard_project_setup(REQUIRES 6.4)

include_directories("${CAMERA_INCLUDE_DIRS}" src)

# libpistache
# pkg_check_modules(Pistache REQUIRED IMPORTED_TARGET libpistache)

# add_executable(${PROJECT_NAME}
file(GLOB_RECURSE SOURCES src/*.h src/*.cpp src/*.c src/*.qrc)
message("sources: ${SOURCES}")
qt_add_executable(apporpheus ${SOURCES})
target_link_libraries(app${PROJECT_NAME}
    PRIVATE
    "${LIBCAMERA_LIBRARIES}"
    # PkgConfig::Pistache
    Qt6::Gui
    Qt6::HttpServer
    Qt6::SerialPort
    wiringPi
    TBB::tbb
)

include(GNUInstallDirs)
install(TARGETS app${PROJECT_NAME}
    BUNDLE DESTINATION .
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
)

if ("${CMAKE_BUILD_TYPE}" MATCHES "Release")
    message("it's Release")
    # add_compile_options(-Ofast -fno-unroll-loops -Wall)
    add_compile_options(-Ofast -Wall)
    # add_compile_options(-Wall -Wextra -Wpedantic)
    # add_compile_options(-O3 -Wall)
else()
    message("it's not Release")
endif()