# FreeRDP: A Remote Desktop Protocol Implementation
# FreeRDP cmake build script
#
# Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

include(CMakeParseArguments)
include(CMakeDependentOption)

macro(define_channel_options)
  set(PREFIX "CHANNEL")

  cmake_parse_arguments(
    ${PREFIX} "" "NAME;TYPE;DESCRIPTION;SPECIFICATIONS;DEFAULT;CLIENT_DEFAULT;SERVER_DEFAULT" "" ${ARGN}
  )

  string(TOUPPER "CHANNEL_${CHANNEL_NAME}" CHANNEL_OPTION)
  string(TOUPPER "CHANNEL_${CHANNEL_NAME}_CLIENT" CHANNEL_CLIENT_OPTION)
  string(TOUPPER "CHANNEL_${CHANNEL_NAME}_SERVER" CHANNEL_SERVER_OPTION)
  string(TOUPPER "${CHANNEL_TYPE}" CHANNEL_TYPE)

  if(CHANNEL_DEFAULT)
    set(OPTION_DEFAULT ${CHANNEL_DEFAULT})
  elseif(CHANNEL_CLIENT_OPTION OR CHANNEL_SERVER_OPTION)
    set(OPTION_DEFAULT "ON")
  endif()

  set(CHANNEL_OPTION_DOC "Build ${CHANNEL_NAME} ${CHANNEL_TYPE} channel")
  set(CHANNEL_CLIENT_OPTION_DOC "Build ${CHANNEL_NAME} ${CHANNEL_TYPE} channel client")
  set(CHANNEL_SERVER_OPTION_DOC "Build ${CHANNEL_NAME} ${CHANNEL_TYPE} channel server")

  if("${CHANNEL_TYPE}" STREQUAL "DYNAMIC")
    cmake_dependent_option(${CHANNEL_OPTION} "${CHANNEL_OPTION_DOC}" ${CHANNEL_DEFAULT} "CHANNEL_DRDYNVC" OFF)
  else()
    option(${CHANNEL_OPTION} "${CHANNEL_OPTION_DOC}" ${CHANNEL_DEFAULT})
  endif()

  # If the channel was enabled before the client/server options will stay ensure
  # they are deleted if the channel is gone.
  if(NOT ${CHANNEL_OPTION})
    unset(${CHANNEL_CLIENT_OPTION} CACHE)
    unset(${CHANNEL_SERVER_OPTION} CACHE)
  endif()

  cmake_dependent_option(
    ${CHANNEL_CLIENT_OPTION} "${CHANNEL_CLIENT_OPTION_DOC}" ${CHANNEL_CLIENT_DEFAULT} "${CHANNEL_OPTION}" OFF
  )

  cmake_dependent_option(
    ${CHANNEL_SERVER_OPTION} "${CHANNEL_SERVER_OPTION_DOC}" ${CHANNEL_SERVER_DEFAULT} "${CHANNEL_OPTION}" OFF
  )
endmacro(define_channel_options)

macro(define_channel _channel_name)
  set(CHANNEL_NAME ${_channel_name})
  set(MODULE_NAME ${CHANNEL_NAME})
  string(TOUPPER "CHANNEL_${CHANNEL_NAME}" MODULE_PREFIX)
endmacro(define_channel)

macro(define_channel_client _channel_name)
  set(CHANNEL_NAME ${_channel_name})
  set(MODULE_NAME "${CHANNEL_NAME}-client")
  string(TOUPPER "CHANNEL_${CHANNEL_NAME}_CLIENT" MODULE_PREFIX)
endmacro(define_channel_client)

macro(define_channel_server _channel_name)
  set(CHANNEL_NAME ${_channel_name})
  set(MODULE_NAME "${CHANNEL_NAME}-server")
  string(TOUPPER "CHANNEL_${CHANNEL_NAME}_SERVER" MODULE_PREFIX)
endmacro(define_channel_server)

macro(define_channel_client_subsystem _channel_name _subsystem _type)
  set(CHANNEL_NAME ${_channel_name})
  set(CHANNEL_SUBSYSTEM ${_subsystem})
  string(LENGTH "${_type}" _type_length)
  string(TOUPPER "CHANNEL_${CHANNEL_NAME}_CLIENT" CHANNEL_PREFIX)
  if(_type_length GREATER 0)
    set(SUBSYSTEM_TYPE ${_type})
    set(MODULE_NAME "${CHANNEL_NAME}-client-${CHANNEL_SUBSYSTEM}-${SUBSYSTEM_TYPE}")
    string(TOUPPER "CHANNEL_${CHANNEL_NAME}_CLIENT_${CHANNEL_SUBSYSTEM}_${SUBSYSTEM_TYPE}" MODULE_PREFIX)
  else()
    set(MODULE_NAME "${CHANNEL_NAME}-client-${CHANNEL_SUBSYSTEM}")
    string(TOUPPER "CHANNEL_${CHANNEL_NAME}_CLIENT_${CHANNEL_SUBSYSTEM}" MODULE_PREFIX)
  endif()
endmacro(define_channel_client_subsystem)

macro(define_channel_server_subsystem _channel_name _subsystem _type)
  set(CHANNEL_NAME ${_channel_name})
  set(CHANNEL_SUBSYSTEM ${_subsystem})
  set(MODULE_NAME "${CHANNEL_NAME}-server-${CHANNEL_SUBSYSTEM}")
  string(TOUPPER "CHANNEL_${CHANNEL_NAME}_server_${CHANNEL_SUBSYSTEM}" MODULE_PREFIX)
endmacro(define_channel_server_subsystem)

macro(add_channel_client _channel_prefix _channel_name)
  if(${_channel_prefix}_CLIENT)
    add_subdirectory(client)
    if(${${_channel_prefix}_CLIENT_STATIC})
      set(CHANNEL_STATIC_CLIENT_MODULES ${CHANNEL_STATIC_CLIENT_MODULES} ${_channel_prefix} PARENT_SCOPE)
      set(${_channel_prefix}_CLIENT_NAME ${${_channel_prefix}_CLIENT_NAME} PARENT_SCOPE)
      set(${_channel_prefix}_CLIENT_CHANNEL ${${_channel_prefix}_CLIENT_CHANNEL} PARENT_SCOPE)
      set(${_channel_prefix}_CLIENT_ENTRY ${${_channel_prefix}_CLIENT_ENTRY} PARENT_SCOPE)
      set(CHANNEL_STATIC_CLIENT_ENTRIES ${CHANNEL_STATIC_CLIENT_ENTRIES} ${${_channel_prefix}_CLIENT_ENTRY}
          PARENT_SCOPE
      )
    endif()
  endif()
endmacro(add_channel_client)

macro(add_channel_server _channel_prefix _channel_name)
  if(${_channel_prefix}_SERVER)
    add_subdirectory(server)
    if(${${_channel_prefix}_SERVER_STATIC})
      set(CHANNEL_STATIC_SERVER_MODULES ${CHANNEL_STATIC_SERVER_MODULES} ${_channel_prefix} PARENT_SCOPE)
      set(${_channel_prefix}_SERVER_NAME ${${_channel_prefix}_SERVER_NAME} PARENT_SCOPE)
      set(${_channel_prefix}_SERVER_CHANNEL ${${_channel_prefix}_SERVER_CHANNEL} PARENT_SCOPE)
      set(${_channel_prefix}_SERVER_ENTRY ${${_channel_prefix}_SERVER_ENTRY} PARENT_SCOPE)
      set(CHANNEL_STATIC_SERVER_ENTRIES ${CHANNEL_STATIC_SERVER_ENTRIES} ${${_channel_prefix}_SERVER_ENTRY}
          PARENT_SCOPE
      )
    endif()
  endif()
endmacro(add_channel_server)

macro(add_channel_client_subsystem _channel_prefix _channel_name _subsystem _type)
  add_subdirectory(${_subsystem})
  set(_channel_module_name "${_channel_name}-client")
  string(LENGTH "${_type}" _type_length)
  if(_type_length GREATER 0)
    string(TOUPPER "CHANNEL_${_channel_name}_CLIENT_${_subsystem}_${_type}" _subsystem_prefix)
  else()
    string(TOUPPER "CHANNEL_${_channel_name}_CLIENT_${_subsystem}" _subsystem_prefix)
  endif()
  if(${${_subsystem_prefix}_STATIC})
    get_target_property(CHANNEL_SUBSYSTEMS ${_channel_module_name} SUBSYSTEMS)
    if(_type_length GREATER 0)
      set(SUBSYSTEMS ${SUBSYSTEMS} "${_subsystem}-${_type}")
    else()
      set(SUBSYSTEMS ${SUBSYSTEMS} ${_subsystem})
    endif()
    set_target_properties(${_channel_module_name} PROPERTIES SUBSYSTEMS "${SUBSYSTEMS}")
  endif()
endmacro(add_channel_client_subsystem)

macro(channel_install _targets _destination _export_target)
  if(NOT BUILD_SHARED_LIBS)
    foreach(_target_name IN ITEMS ${_targets})
      target_include_directories(${_target_name} INTERFACE $<INSTALL_INTERFACE:include>)
    endforeach()
    installwithrpath(TARGETS ${_targets} DESTINATION ${_destination} EXPORT ${_export_target})
  endif()
endmacro(channel_install)

macro(server_channel_install _targets _destination)
  channel_install(${_targets} ${_destination} "FreeRDP-ServerTargets")
endmacro(server_channel_install)

macro(client_channel_install _targets _destination)
  channel_install(${_targets} ${_destination} "FreeRDP-ClientTargets")
endmacro(client_channel_install)

macro(add_channel_client_library _module_prefix _module_name _channel_name _dynamic _entry)
  set(_lnk_dir ${${_module_prefix}_LINK_DIRS})
  if(NOT "${_lnk_dir}" STREQUAL "")
    link_directories(${_lnk_dir})
  endif()

  set(${_module_prefix}_STATIC ON PARENT_SCOPE)
  set(${_module_prefix}_NAME ${_module_name} PARENT_SCOPE)
  set(${_module_prefix}_CHANNEL ${_channel_name} PARENT_SCOPE)
  set(${_module_prefix}_ENTRY ${_entry} PARENT_SCOPE)

  add_library(${_module_name} OBJECT ${${_module_prefix}_SRCS})
  set_property(TARGET ${_module_name} PROPERTY FOLDER "Channels/${CHANNEL_NAME}/Client")

  if(${_module_prefix}_LIBS)
    target_link_libraries(${_module_name} PUBLIC ${${_module_prefix}_LIBS})
  endif()
  client_channel_install(${_module_name} ${FREERDP_ADDIN_PATH})
endmacro(add_channel_client_library)

macro(
  add_channel_client_subsystem_library
  _module_prefix
  _module_name
  _channel_name
  _type
  _dynamic
  _entry
)
  set(_lnk_dir ${${_module_prefix}_LINK_DIRS})
  if(NOT "${_lnk_dir}" STREQUAL "")
    link_directories(${_lnk_dir})
  endif()

  set(${_module_prefix}_STATIC ON PARENT_SCOPE)
  set(${_module_prefix}_NAME ${_module_name} PARENT_SCOPE)
  set(${_module_prefix}_TYPE ${_type} PARENT_SCOPE)

  add_library(${_module_name} OBJECT ${${_module_prefix}_SRCS})
  set_property(TARGET ${_module_name} PROPERTY FOLDER "Channels/${_channel_name}/Client/Subsystem/${CHANNEL_SUBSYSTEM}")

  if(${_module_prefix}_LIBS)
    target_link_libraries(${_module_name} PUBLIC ${${_module_prefix}_LIBS})
  endif()
  client_channel_install(${_module_name} ${FREERDP_ADDIN_PATH})
endmacro(add_channel_client_subsystem_library)

macro(add_channel_server_library _module_prefix _module_name _channel_name _dynamic _entry)
  set(_lnk_dir ${${_module_prefix}_LINK_DIRS})
  if(NOT "${_lnk_dir}" STREQUAL "")
    link_directories(${_lnk_dir})
  endif()

  set(${_module_prefix}_STATIC ON PARENT_SCOPE)
  set(${_module_prefix}_NAME ${_module_name} PARENT_SCOPE)
  set(${_module_prefix}_CHANNEL ${_channel_name} PARENT_SCOPE)
  set(${_module_prefix}_ENTRY ${_entry} PARENT_SCOPE)

  add_library(${_module_name} OBJECT ${${_module_prefix}_SRCS})
  set_property(TARGET ${_module_name} PROPERTY FOLDER "Channels/${CHANNEL_NAME}/Server")

  if(${_module_prefix}_LIBS)
    target_link_libraries(${_module_name} PUBLIC ${${_module_prefix}_LIBS})
  endif()
  server_channel_install(${_module_name} ${FREERDP_ADDIN_PATH})
endmacro(add_channel_server_library)

set(FILENAME "ChannelOptions.cmake")
file(GLOB FILEPATHS RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} "*/${FILENAME}")

# We need special treatment for drdynvc:
# It needs to be the first entry so that every
# dynamic channel has the dependent options available.
set(DRDYNVC_MATCH "")

foreach(FILEPATH ${FILEPATHS})
  if(${FILEPATH} MATCHES "^([^/]*)drdynvc/+${FILENAME}")
    set(DRDYNVC_MATCH ${FILEPATH})
  endif()
endforeach()

if(NOT "${DRDYNVC_MATCH}" STREQUAL "")
  list(REMOVE_ITEM FILEPATHS ${DRDYNVC_MATCH})
  list(APPEND FILEPATHS ${DRDYNVC_MATCH})
  list(REVERSE FILEPATHS) # list PREPEND is not available on old CMake3
endif()

foreach(FILEPATH ${FILEPATHS})
  if(${FILEPATH} MATCHES "^([^/]*)/+${FILENAME}")
    string(REGEX REPLACE "^([^/]*)/+${FILENAME}" "\\1" DIR ${FILEPATH})
    set(CHANNEL_OPTION)
    include(${FILEPATH})
    if(${CHANNEL_OPTION})
      set(CHANNEL_MESSAGE "Adding ${CHANNEL_TYPE} channel")
      if(${CHANNEL_CLIENT_OPTION})
        set(CHANNEL_MESSAGE "${CHANNEL_MESSAGE} client")
      endif()
      if(${CHANNEL_SERVER_OPTION})
        set(CHANNEL_MESSAGE "${CHANNEL_MESSAGE} server")
      endif()
      set(CHANNEL_MESSAGE "${CHANNEL_MESSAGE} \"${CHANNEL_NAME}\"")
      set(CHANNEL_MESSAGE "${CHANNEL_MESSAGE}: ${CHANNEL_DESCRIPTION}")
      message(STATUS "${CHANNEL_MESSAGE}")
      add_subdirectory(${DIR})
    endif()
  endif()
endforeach(FILEPATH)

if(WITH_CHANNELS)
  if(WITH_CLIENT_CHANNELS)
    add_subdirectory(client)
    set(FREERDP_CHANNELS_CLIENT_SRCS ${FREERDP_CHANNELS_CLIENT_SRCS} PARENT_SCOPE)
    set(FREERDP_CHANNELS_CLIENT_LIBS ${FREERDP_CHANNELS_CLIENT_LIBS} PARENT_SCOPE)
  endif()

  if(WITH_SERVER_CHANNELS)
    add_subdirectory(server)
    set(FREERDP_CHANNELS_SERVER_SRCS ${FREERDP_CHANNELS_SERVER_SRCS} PARENT_SCOPE)
    set(FREERDP_CHANNELS_SERVER_LIBS ${FREERDP_CHANNELS_SERVER_LIBS} PARENT_SCOPE)
  endif()
endif()
