add_subdirectory("third/language")

# Get a list of ALL files and directories within the current directory
file(GLOB MODULES_FOLDERS RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} "*")
remove_item_from_list(MODULES_FOLDERS "CMakeFiles")

# If using Windows, add the MODULE_COMPILE define
if(WIN32)
  add_definitions(-DMODULE_COMPILE)
endif(WIN32)

# Iterate through the directories
foreach(MODULE_FOLDER ${MODULES_FOLDERS})
  if(IS_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/${MODULE_FOLDER}")
    # Get a list of all .cpp files in this directory
    file(GLOB MODULES_SRCS RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} "${MODULE_FOLDER}/*.cpp")
    sort_list(MODULES_SRCS)

    # Set all the files to use C++ as well as set their compile flags (use the module-specific compile flags, though)
    set_source_files_properties(${MODULES_SRCS} PROPERTIES LANGUAGE CXX COMPILE_FLAGS "${CXXFLAGS}")

    # Create an empty list to store extra include directories
    set(EXTRA_INCLUDES)

    # Get the length of the folder name
    string(LENGTH ${MODULE_FOLDER} FOLDER_LEN)
    # Add one (the /)
    math(EXPR FOLDER_LEN "${FOLDER_LEN} + 1")

    # Iterate through all the source files
    foreach(SRC ${MODULES_SRCS})
      # Get the length of the new source file
      string(LENGTH ${SRC} SRC_LEN)
      # Set FILE_LEN to the length of the source file minus folder length
      math(EXPR FILE_LEN "${SRC_LEN} - ${FOLDER_LEN}")
      # Get the real name of the source file now
      string(SUBSTRING ${SRC} ${FOLDER_LEN} ${FILE_LEN} SRC_REALNAME)
      # Convert the real source file extension to have a .so extension
      string(REGEX REPLACE "\\.cpp$" ".so" SO ${SRC_REALNAME})
      # Reset skip_depends
      set(SKIP_DEPENDS)
      # Temporary variable for the current source's include directories
      set(TEMP_INCLUDES)
      # Calculate the header file dependencies for the given source file
      calculate_depends(${SRC} SKIP_DEPENDS TEMP_INCLUDES)
      # If there were some extra include directories, add them to the list
      if(TEMP_INCLUDES)
        append_to_list(EXTRA_INCLUDES ${TEMP_INCLUDES})
      endif(TEMP_INCLUDES)
      # Reset linker flags
      set(TEMP_LDFLAGS)
      # Reset extra dependencies
      set(TEMP_DEPENDENCIES)
      # Reset skip_libraries
      set(SKIP_LIBRARIES)
      # Calculate the library dependencies for the given source file
      calculate_libraries(${SRC} SKIP_LIBRARIES TEMP_LDFLAGS TEMP_DEPENDENCIES)
      if(NOT SKIP_DEPENDS AND NOT SKIP_LIBRARIES)
        # Reset has_function
        set(HAS_FUNCTION)
        # Check the function dependencies for the given source file
        check_functions(${SRC} HAS_FUNCTION)
        # Only continue if this module has all of the required functions
        if(HAS_FUNCTION)
          # For Visual Studio only, include win32_memory static library, required to override Visual Studio's overrides of the new/delete operators
          if(MSVC)
            set(WIN32_MEMORY win32_memory)
          else(MSVC)
            set(WIN32_MEMORY)
          endif(MSVC)
          # Generate the module and set it's linker flags, also set it to depend on the main Anope executable to be built beforehand
          add_library(${SO} MODULE ${SRC})
          # Windows requires this because it's weird
          if(WIN32)
            set(WIN32_NO_LIBS "/nodefaultlib:\"libcmt.lib\"")
          else(WIN32)
            set(WIN32_NO_LIBS)
          endif(WIN32)
          set_target_properties(${SO} PROPERTIES LINKER_LANGUAGE CXX PREFIX "" SUFFIX "" LINK_FLAGS "${TEMP_LDFLAGS} ${WIN32_NO_LIBS}")
          add_dependencies(${SO} ${PROGRAM_NAME})
          if(GETTEXT_FOUND)
            add_dependencies(${SO} module_language)
          endif(GETTEXT_FOUND)
          # For Windows only, have the module link to the export library of Anope as well as wsock32 and Ws2_32 libraries (most of the modules probably don't need this, but this is to be on the safe side), also set it's version
          if(WIN32)
            target_link_libraries(${SO} ${PROGRAM_NAME} wsock32 Ws2_32 ${WIN32_MEMORY} ${TEMP_DEPENDENCIES})
            set_target_properties(${PROGRAM_NAME} PROPERTIES VERSION "${VERSION_DOTTED}")
          else(WIN32)
            target_link_libraries(${SO} ${PROGRAM_NAME} ${TEMP_DEPENDENCIES})
          endif(WIN32)
          # Set the module to be installed to the module directory under the data directory
          install(TARGETS ${SO}
            DESTINATION ${LIB_DIR}/modules
          )
        endif(HAS_FUNCTION)
      else(NOT SKIP_DEPENDS AND NOT SKIP_LIBRARIES)
        message("  This is not a fatal error - ${SRC} will not be built.")
      endif(NOT SKIP_DEPENDS AND NOT SKIP_LIBRARIES)
    endforeach(SRC)

    # Get a list of ALL files and directories within this modules directory
    file(GLOB SUBMODULE_DIRS RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} "${MODULE_FOLDER}/*")
    remove_item_from_list(SUBMODULE_DIRS "CMakeFiles")
    remove_item_from_list(SUBMODULE_DIRS "third/language")

    foreach(SUBDIR ${SUBMODULE_DIRS})
      if(IS_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/${SUBDIR}")
        file(GLOB_RECURSE MODULES_SUBDIR_SRCS RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} "${SUBDIR}/*.cpp")
        sort_list(MODULES_SUBDIR_SRCS)

        # Set all the files to use C++ as well as set their compile flags (use the module-specific compile flags, though)
        set_source_files_properties(${MODULES_SUBDIR_SRCS} PROPERTIES LANGUAGE CXX COMPILE_FLAGS "${CXXFLAGS}")

        # Get the length of this subdir
        string(LENGTH ${SUBDIR} SUBDIR_LEN)
        # Calculate the length of the folder
        math(EXPR FILE_LEN "${SUBDIR_LEN} - ${FOLDER_LEN}")
        # Extract this subfolders name to use to generate the .so file
        string(SUBSTRING ${SUBDIR} ${FOLDER_LEN} ${FILE_LEN} SUBDIR_REALNAME)
        # Add .so to the end of the directory name, this will be the module's name
        set(SO "${SUBDIR_REALNAME}.so")

        # Temporary linker flags for this subdirectory
        set(SUBDIR_LDFLAGS "${LDFLAGS}")
        # Temporary extra dependencies for this subdirectory
        set(SUBDIR_EXTRA_DEPENDS)
        # Reset skip_depends
        set(SKIP_DEPENDS)
        # Reset skip_libraries
        set(SKIP_LIBRARIES)
        # Reset has_function
        set(HAS_FUNCTION TRUE)

        # Iterate through the source files in the subdirectory
        foreach(SRC ${MODULES_SUBDIR_SRCS})
          if(NOT SKIP_DEPENDS AND NOT SKIP_LIBRARIES AND HAS_FUNCTION)
            # Temporary variable for the current source's include directories
            set(TEMP_INCLUDES)
            # Calculate the header file dependencies for the given source file
            calculate_depends(${SRC} SKIP_DEPENDS TEMP_INCLUDES)
            # If there were some extra include directories, add them to the list
            if(TEMP_INCLUDES)
              append_to_list(EXTRA_INCLUDES ${TEMP_INCLUDES})
            endif(TEMP_INCLUDES)
            # Reset linker flags
            set(TEMP_LDFLAGS)
            # Reset extra dependencies
            set(TEMP_DEPENDENCIES)
            # Calculate the library dependencies for the given source file
            calculate_libraries(${SRC} SKIP_LIBRARIES TEMP_LDFLAGS TEMP_DEPENDENCIES)
            # Check the function dependencies for the given source file
            check_functions(${SRC} HAS_FUNCTION)

            # Append this source file's linker flags to the subdirectoy's linker flags, if there are any to append
            if(TEMP_DEPENDENCIES)
              append_to_list(SUBDIR_EXTRA_DEPENDS ${TEMP_DEPDENCIES})
            endif(TEMP_DEPENDENCIES)
          endif(NOT SKIP_DEPENDS AND NOT SKIP_LIBRARIES AND HAS_FUNCTION)
        endforeach(SRC)

        # Continue if library and function requirements are met
        if(NOT SKIP_DEPENDS AND NOT SKIP_LIBRARIES AND HAS_FUNCTION)
          # Remove duplicates from the linker flags
          if(SUBDIR_LDFLAGS)
            remove_list_duplicates(SUBDIR_LDFLAGS)
          endif(SUBDIR_LDFLAGS)
          # Remove duplicates from the extra dependencies
          if(SUBDIR_EXTRA_DEPENDS)
            remove_list_duplicates(SUBDIR_EXTRA_DEPENDS)
          endif(SUBDIR_EXTRA_DEPENDS)

          # For Visual Studio only, include win32_memory static library, required to override Visual Studio's overrides of the new/delete operators
          if(MSVC)
            set(WIN32_MEMORY win32_memory)
          else(MSVC)
            set(WIN32_MEMORY)
          endif(MSVC)

          # Generate the module and set it's linker flags, also set it to depend on the main Anope executable to be built beforehand
          add_library(${SO} MODULE ${MODULES_SUBDIR_SRCS})
          set_target_properties(${SO} PROPERTIES LINKER_LANGUAGE CXX PREFIX "" SUFFIX "" LINK_FLAGS "${SUBDIR_LDFLAGS}")
          add_dependencies(${SO} ${PROGRAM_NAME})
          if(GETTEXT_FOUND)
            add_dependencies(${SO} module_language)
          endif(GETTEXT_FOUND)
          # For Windows only, have the module link to the export library of Anope as well as wsock32 and Ws2_32 libraries (most of the modules probably don't need this, but this is to be on the safe side), also set it's version
          if(WIN32)
             target_link_libraries(${SO} ${PROGRAM_NAME} wsock32 Ws2_32 ${WIN32_MEMORY} ${SUBDIR_EXTRA_DEPENDS})
             set_target_properties(${PROGRAM_NAME} PROPERTIES VERSION "${VERSION_DOTTED}")
          endif(WIN32)
          # Set the module to be installed to the module directory under the data directory
          install(TARGETS ${SO}
            DESTINATION ${LIB_DIR}/modules
          )
         else(NOT SKIP_DEPENDS AND NOT SKIP_LIBRARIES AND HAS_FUNCTION)
          message("  This is not a fatal error - ${SUBDIR} will not be built.")
        endif(NOT SKIP_DEPENDS AND NOT SKIP_LIBRARIES AND HAS_FUNCTION)

	# Run the directories CMakeLists.txt if there is one
        if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${SUBDIR}/CMakeLists.txt")
          add_subdirectory("${CMAKE_CURRENT_SOURCE_DIR}/${SUBDIR}")
        endif(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${SUBDIR}/CMakeLists.txt")
      endif(IS_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/${SUBDIR}")
    endforeach(SUBDIR)
  endif(IS_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/${MODULE_FOLDER}")
endforeach(MODULE_FOLDER)

# If there were extra include directories, remove the duplicates and add the directories to the include path
if(EXTRA_INCLUDES)
  remove_list_duplicates(EXTRA_INCLUDES)
  include_directories(${EXTRA_INCLUDES})
endif(EXTRA_INCLUDES)