#TODO: This file is a modified copy of the old gui/Platform.py
"""
Copyright 2008, 2009 Free Software Foundation, Inc.
This file is part of GNU Radio

SPDX-License-Identifier: GPL-2.0-or-later

"""


import sys
import os
from collections import ChainMap

from .Config import Config
from .components.canvas.flowgraph import Flowgraph
from .components.canvas.block import Block
from .components.canvas.port import Port
from .components.canvas.connection import Connection
from ..core.platform import Platform as CorePlatform


class Platform(CorePlatform):

    def __init__(self, *args, **kwargs):
        CorePlatform.__init__(self, *args, **kwargs)

        # Ensure conf directories
        gui_prefs_file = self.config.gui_prefs_file
        if not os.path.exists(os.path.dirname(gui_prefs_file)):
            os.mkdir(os.path.dirname(gui_prefs_file))

        self._move_old_pref_file()

    def get_prefs_file(self):
        return self.config.gui_prefs_file

    def _move_old_pref_file(self):
        gui_prefs_file = self.config.gui_prefs_file
        old_gui_prefs_file = os.environ.get(
            'GRC_PREFS_PATH', os.path.expanduser('~/.grc'))
        if gui_prefs_file == old_gui_prefs_file:
            return  # prefs file overridden with env var
        if os.path.exists(old_gui_prefs_file) and not os.path.exists(gui_prefs_file):
            try:
                import shutil
                shutil.move(old_gui_prefs_file, gui_prefs_file)
            except Exception as e:
                print(e, file=sys.stderr)

    ##############################################
    # Factories
    ##############################################
    Config = Config
    FlowGraph = Flowgraph
    Connection = Connection

    def new_block_class(self, **data):
        cls = CorePlatform.new_block_class(self, **data)
        return Block.make_cls_with_base(cls)

    block_classes_build_in = {key: Block.make_cls_with_base(cls)
                              for key, cls in CorePlatform.block_classes_build_in.items()}
    block_classes = ChainMap({}, block_classes_build_in)

    port_classes = {key: Port.make_cls_with_base(cls)
                    for key, cls in CorePlatform.port_classes.items()}
    #param_classes = {key: Param.make_cls_with_base(cls)
    #                 for key, cls in CorePlatform.param_classes.items()}