cmake_minimum_required(VERSION 3.16)

project(everest-core
    VERSION 2026.02.0
    DESCRIPTION "The open operating system for e-mobility charging stations"
	LANGUAGES CXX C
)

find_package(everest-cmake 0.5
    COMPONENTS bundling
    PATHS ../everest-cmake
    NO_DEFAULT_PATH
)
find_package(everest-cmake 0.5
    COMPONENTS bundling
)

if (NOT everest-cmake_FOUND)
    message(STATUS "Retrieving everest-cmake using FetchContent")
    include(FetchContent)
    FetchContent_Declare(
        everest-cmake
        GIT_REPOSITORY https://github.com/EVerest/everest-cmake.git
        GIT_TAG        main
    )
    FetchContent_MakeAvailable(everest-cmake)
    set(everest-cmake_DIR "${everest-cmake_SOURCE_DIR}")
    set(everest-cmake_FIND_COMPONENTS "bundling")
    include("${everest-cmake_SOURCE_DIR}/everest-cmake-config.cmake")
endif()

# make own cmake modules available
list(INSERT CMAKE_MODULE_PATH 0 "${CMAKE_CURRENT_SOURCE_DIR}/cmake")

# test whether linking with libatomic is required on some platforms
include(CheckAtomic)
if(HAVE_CXX_ATOMICS_WITH_LIB OR HAVE_CXX_ATOMICS64_WITH_LIB)
    set(ATOMIC_LIBS "atomic")
else()
    set(ATOMIC_LIBS "")
endif()

# test whether we are building on a musl based system.
# On these we need to increase the stack size as it is very low by default
option(USING_MUSL "Using musl" OFF)
find_program(LDD_EXECUTABLE ldd)
find_program(LS_EXECUTABLE ls)
if(LDD_EXECUTABLE AND LS_EXECUTABLE)
    # we use ls as a testing executable as it is very likely to exist on any system. ldd prints the dynamic linked libraries
    # of the given executable, if musl is used it will print it as a linked object
    execute_process(COMMAND ${LDD_EXECUTABLE} ${LS_EXECUTABLE} OUTPUT_VARIABLE LDD_LS_OUTPUT ERROR_QUIET)
    if(LDD_LS_OUTPUT MATCHES "musl")
        message(STATUS "MUSL detected, increasing stack size to 8MiB")
        set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-z,stack-size=8388608")
        set(USING_MUSL ON)
    endif()
else()
    if(NOT LDD_EXECUTABLE)
        message(WARNING "ldd not found, skipping musl detection")
    endif()
    if(NOT LS_EXECUTABLE)
        message(WARNING "ls not found, skipping musl detection")
    endif()
endif()

option(CREATE_SYMLINKS "Create symlinks to javascript modules and auxillary files - for development purposes" OFF)
option(CMAKE_RUN_CLANG_TIDY "Run clang-tidy" OFF)
option(ISO15118_2_GENERATE_AND_INSTALL_CERTIFICATES "Automatically generate and install certificates for development purposes" ON)
option(EVEREST_ENABLE_RUN_SCRIPT_GENERATION "Enables the generation of run scripts (convenience scripts for starting available configurations)" ON)
option(EVEREST_BUILD_DOCS "Build EVerest documentation" OFF)
option(EVEREST_SKIP_BUILD_API_DOC "Skip building the async API html doc for the EVerest API" OFF)
option(${PROJECT_NAME}_BUILD_TESTING "Build unit tests, used if included as dependency" OFF)
option(BUILD_TESTING "Build unit tests, used if standalone project" OFF)
option(EVEREST_ENABLE_COMPILE_WARNINGS "Enable compile warnings set in the EVEREST_COMPILE_OPTIONS flag" OFF)
option(EVEREST_ENABLE_GLOBAL_COMPILE_WARNINGS "Enable compile warnings set in the EVEREST_COMPILE_OPTIONS flag globally" OFF)
option(EVEREST_ENABLE_DEBUG_BUILD "Enable debug build" OFF)
option(EVEREST_BUILD_APPLICATIONS "Build applications like drivers for the EVerest stable API" ON)
option(EVEREST_LIBS_ONLY "Only build libraries, skip modules/applications/config" OFF)
option(EVEREST_IO_WITH_MQTT "Build MQTT (mosquitto) support in everest::io" ON)
set(EVEREST_INCLUDE_LIBS "" CACHE STRING "Semicolon-separated allowlist of libraries to build (empty = all)")
set(EVEREST_EXCLUDE_LIBS "" CACHE STRING "Semicolon-separated blocklist of libraries to skip")
# list of compile options that are passed to modules if EVEREST_ENABLE_COMPILE_WARNINGS=ON
# generated code has functions often not used
set(EVEREST_COMPILE_OPTIONS "-Wall;-Wno-unused-function" CACHE STRING "A list of compile options used for building modules")
if(EVEREST_ENABLE_GLOBAL_COMPILE_WARNINGS)
    add_compile_options(${EVEREST_COMPILE_OPTIONS})
endif()
if((${CMAKE_PROJECT_NAME} STREQUAL ${PROJECT_NAME} OR ${PROJECT_NAME}_BUILD_TESTING) AND BUILD_TESTING)
    set(EVEREST_CORE_BUILD_TESTING ON)
    set(everest-framework_BUILD_TESTING ON)
    set(ISO15118_BUILD_TESTING ON)
    set(ocpp_BUILD_TESTING ON)
    set(LIBEVSE_SECURITY_BUILD_TESTING ON)
    set(everest-evse_security_BUILD_TESTING ON)
    set(everest-sqlite_BUILD_TESTING ON)
    set(everest-timer_BUILD_TESTING ON)
    set(everest-log_BUILD_TESTING ON)
    set(IEEE2030_BUILD_TESTING ON)
endif()
# This is a flag for building development tests, but not necessarily to run them, for expample in case
# tests requires hardware.
option(BUILD_DEV_TESTS "Build dev tests" OFF)
ev_setup_cmake_variables_python_wheel()
option(${PROJECT_NAME}_INSTALL_EV_CLI_IN_PYTHON_VENV "Install ev-cli in python venv instead of using system" ON)
set(${PROJECT_NAME}_PYTHON_VENV_PATH "${CMAKE_BINARY_DIR}/venv" CACHE PATH "Path to python venv")

ev_setup_python_executable(
    USE_PYTHON_VENV ${${PROJECT_NAME}_USE_PYTHON_VENV}
    PYTHON_VENV_PATH ${${PROJECT_NAME}_PYTHON_VENV_PATH}
)

# Already include CTest here to allow it to find tests defined in subdirectories like lib and modules
if(EVEREST_CORE_BUILD_TESTING)
    include(CTest)

    if (NOT CMAKE_BUILD_TYPE)
        if(EVEREST_ENABLE_DEBUG_BUILD)
            set(CMAKE_BUILD_TYPE Debug CACHE STRING "Build type" FORCE)
        else()
            set(CMAKE_BUILD_TYPE MinSizeRel CACHE STRING "Build type" FORCE)
        endif()
    endif()
endif()

include(ev-define-dependency)
include(ev-lib-dependencies)

if(NOT EVEREST_LIBS_ONLY)
    include("module-dependencies.cmake")
endif()

# this policy allows us to continue using the removed FindBoost module for now
if(POLICY CMP0167)
    cmake_policy(SET CMP0167 OLD)
endif()

find_package(Boost
    COMPONENTS
        filesystem
        program_options
        thread
    REQUIRED
)

include(compatibility/boost)

set(everest-framework_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/lib/everest/framework)
set(everest-framework_BINARY_DIR ${CMAKE_BINARY_DIR}/lib/everest/framework)
set(EVEREST_SCHEMA_DIR ${everest-framework_SOURCE_DIR}/schemas)
set(everest-sqlite_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/lib/everest/sqlite)
if(NOT DEFINED EVEREST_ENABLE_PY_SUPPORT)
    set(EVEREST_ENABLE_PY_SUPPORT ON CACHE BOOL "Enable EVerest Python support" FORCE)
endif()

if(NOT DISABLE_EDM)
    # FIXME (aw): this implicit definition for child projects is hacky
    set(THIRD_PARTY_APP_DST "${CMAKE_INSTALL_LIBEXECDIR}/everest/3rd_party")

    # edm
    add_subdirectory(applications/dependency_manager)

    evc_setup_edm()

    if(EVEREST_DEPENDENCY_ENABLED_SDBUS_CPP AND NOT TARGET SDBusCpp::sdbus-c++)
        add_library(SDBusCpp::sdbus-c++ ALIAS sdbus-c++)
    endif()

    # ev-cli and everest-testing
    if(NOT EVEREST_LIBS_ONLY)
        add_subdirectory(applications/utils)
    endif()
else()
    if(NOT EVEREST_LIBS_ONLY)
        find_package(PalSigslot REQUIRED)
        find_package(libnfc-nci REQUIRED)
        find_package(pugixml REQUIRED)
        find_package(CURL 7.84.0 REQUIRED)
        find_package(ftxui 6 QUIET) # optional, if not available BringUp module will not be built
        find_package(sdbus-c++ REQUIRED)
    endif()

    find_package(ryml REQUIRED)
    find_package(nlohmann_json REQUIRED)
    find_package(fmt REQUIRED)
    find_package(date REQUIRED)
    find_package(OpenSSL 3 REQUIRED)
endif()

if(EVEREST_BUILD_DOCS)
    add_subdirectory(docs)
endif()

if(EVEREST_LIBS_ONLY)
    # ev-targets provides ev_register_library_target() used by some libraries
    include(ev-targets)
else()
    include(ev-project-bootstrap)

    ev_add_project()

    # create MF_ROOT_CA if not available
    if (ISO15118_2_GENERATE_AND_INSTALL_CERTIFICATES)
        file(TOUCH config/certs/ca/mf/MF_ROOT_CA.pem)
    endif()
endif()

add_subdirectory(lib)

if(NOT EVEREST_LIBS_ONLY)
    # config
    # FIXME (aw): this should be optional
    add_subdirectory(config)

    if(EVEREST_BUILD_APPLICATIONS)
      add_subdirectory(applications)
    endif()

    ev_install_project()
endif()

# configure clang-tidy if requested
if(CMAKE_RUN_CLANG_TIDY)
    message("Enabling clang-tidy")
    set(CMAKE_CXX_CLANG_TIDY clang-tidy)
endif()

# build doxygen documentation if doxygen is available
find_package(Doxygen)
if(DOXYGEN_FOUND)
    set( DOXYGEN_OUTPUT_DIRECTORY dist/docs )
    doxygen_add_docs(doxygen-${PROJECT_NAME} everest.js include lib src)
endif()

# testing
if(EVEREST_CORE_BUILD_TESTING AND NOT EVEREST_LIBS_ONLY)
    add_subdirectory(tests)
else()
    message("Not running unit tests")
endif()

if(NOT EVEREST_LIBS_ONLY)
    # convenience target for integration tests
    add_custom_target(install_everest_testing
        COMMAND
            if [ -z "${CPM_PACKAGE_everest-utils_SOURCE_DIR}" ] \;
            then echo "Could not determine location of everest-utils, please install everest-testing manually!" \;
            else echo "Found everest-utils at ${CPM_PACKAGE_everest-utils_SOURCE_DIR}" \;
                 ${Python3_EXECUTABLE} -m pip install -e "${CPM_PACKAGE_everest-utils_SOURCE_DIR}/everest-testing" \;
            fi\;
        DEPENDS
            everestpy_pip_install_dist
        COMMENT
            "Installing dependencies for testing EVerest"
    )
endif()