include_guard(GLOBAL)

if(${CMAKE_VERSION} VERSION_LESS "3.17.0")
  set(MYX_CMAKE_LIB_UNCRUSTIFY_DIR_BACKPORT "${CMAKE_CURRENT_LIST_DIR}")
endif()

find_program(UNCRUSTIFY_EXE NAMES uncrustify)

function(myx_uncrustify NAME)
  if(${CMAKE_VERSION} VERSION_LESS "3.17.0")
    set(CMAKE_CURRENT_FUNCTION_LIST_DIR ${MYX_CMAKE_LIB_UNCRUSTIFY_DIR_BACKPORT})
  endif()

  myx_skip_external_target(${NAME})

  set(options)
  set(oneValueArgs CONFIG)
  set(multiValueArgs)
  cmake_parse_arguments(ARG "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})

  if(NOT ARG_CONFIG)
    set(ARG_CONFIG "${PROJECT_SOURCE_DIR}/.uncrustify.cfg")
    if(NOT EXISTS ${ARG_CONFIG})
      set(ARG_CONFIG "${CMAKE_SOURCE_DIR}/.uncrustify.cfg")
    endif()
  endif()

  if(NOT EXISTS ${ARG_CONFIG})
    myx_message_notice("MyxCMake: uncrustify config is not found")
    return()
  endif()

  if(NOT UNCRUSTIFY_EXE)
    myx_message_notice("MyxCMake: uncrustify executable is not found")
    return()
  endif()

  if(NOT TARGET myx-uncrustify)
    add_custom_target(myx-uncrustify)
  endif()
  if(NOT TARGET myx-uncrustify-check)
    add_custom_target(myx-uncrustify-check)
  endif()
  if(NOT TARGET myx-uncrustify-append-comments)
    add_custom_target(myx-uncrustify-append-comments)
  endif()

  # Динамически сгенерированные файлы исключаются
  get_target_property(target_type ${NAME} TYPE)
  if(${target_type} STREQUAL "INTERFACE_LIBRARY")
    get_target_property(s ${NAME} INTERFACE_SOURCES)
  else()
    get_target_property(s ${NAME} SOURCES)
  endif()
  foreach(iter ${s})
    string(FIND ${iter} ${CMAKE_BINARY_DIR} pos)
    if(pos EQUAL -1)
      list(APPEND src ${iter})
    endif()
  endforeach()
  add_custom_command(OUTPUT ${PROJECT_BINARY_DIR}/uncrustify-${NAME}.cfg
                     COMMAND ${UNCRUSTIFY_EXE} --update-config-with-doc
                                               -c ${ARG_CONFIG}
                                               -o ${PROJECT_BINARY_DIR}/uncrustify-${NAME}.cfg)
                                             list(APPEND UNCRUSTIFY_OPTS -c ${PROJECT_BINARY_DIR}/uncrustify-${NAME}.cfg)
  # cmake-format: off
  add_custom_target(${NAME}-uncrustify-check
    DEPENDS ${PROJECT_BINARY_DIR}/uncrustify-${NAME}.cfg
    COMMAND ${UNCRUSTIFY_EXE} ${UNCRUSTIFY_OPTS} --check ${src})

  list(APPEND UNCRUSTIFY_OPTS --replace --no-backup)
  add_custom_target(${NAME}-uncrustify
    DEPENDS ${PROJECT_BINARY_DIR}/uncrustify-${NAME}.cfg
    COMMAND ${UNCRUSTIFY_EXE} ${UNCRUSTIFY_OPTS} --mtime ${src})

  add_custom_target(${NAME}-uncrustify-append-comments
    DEPENDS ${PROJECT_BINARY_DIR}/uncrustify-${NAME}.cfg
    COMMAND ${UNCRUSTIFY_EXE} ${UNCRUSTIFY_OPTS}
            --set cmt_insert_class_header=${CMAKE_CURRENT_FUNCTION_LIST_DIR}/classheader.txt
            --set cmt_insert_file_footer=${CMAKE_CURRENT_FUNCTION_LIST_DIR}/filefooter.txt
            --set cmt_insert_file_header=${CMAKE_CURRENT_FUNCTION_LIST_DIR}/fileheader.txt
            --set cmt_insert_func_header=${CMAKE_CURRENT_FUNCTION_LIST_DIR}/funcheader.txt
            --set cmt_insert_before_ctor_dtor=true --mtime ${src})
  # cmake-format: on

  add_dependencies(myx-uncrustify ${NAME}-uncrustify)
  add_dependencies(myx-uncrustify-check ${NAME}-uncrustify-check)
  add_dependencies(myx-uncrustify-append-comments ${NAME}-uncrustify-append-comments)
endfunction()