import asyncio
import logging
import os
import queue
import random
import string
import subprocess
import time
from operator import itemgetter
from pathlib import Path

import bpy
import mathutils
from bpy_extras.io_utils import ExportHelper

from . import environment, presence, ui, utils
from .libs import umsgpack
from .libs.replication.data import ReplicatedDataFactory
from .libs.replication.interface import Client
from . import bl_types

logger = logging.getLogger(__name__)

client = None

context = None





# def upload_client_instance_position():
#     username = bpy.context.window_manager.session.username
#     if client:

#         key = "Client/{}".format(username)

#         current_coords = presence.get_client_view_rect()
#         client_list = client.get(key)

#         if current_coords and client_list:
#             if current_coords != client_list[0][1]['location']:
#                 client_list[0][1]['location'] = current_coords
#                 client.set(key, client_list[0][1])


# def update_client_selected_object(context):
    # session = bpy.context.window_manager.session
    # username = bpy.context.window_manager.session.username
    # client_key = "Client/{}".format(username)
    # client_data = client.get(client_key)

    # selected_objects = utils.get_selected_objects(context.scene)
    # if len(selected_objects) > 0 and len(client_data) > 0:

    #     for obj in selected_objects:
    #         # if obj not in client_data[0][1]['active_objects']:
    #         client_data[0][1]['active_objects'] = selected_objects

    #         client.set(client_key, client_data[0][1])
    #         break

    # elif client_data and client_data[0][1]['active_objects']:
    #     client_data[0][1]['active_objects'] = []
    #     client.set(client_key, client_data[0][1])

def add_datablock(datablock):
    global client
    child=None

    if hasattr(datablock,"data"):
        child = add_datablock(datablock.data)
    
    if datablock.uuid and client.exist(datablock.uuid) :
        return datablock.uuid
    else:
        new_uuid = client.add(datablock,childs=child)
        datablock.uuid = new_uuid
        return new_uuid
    
        
        

# TODO: cleanup
def init_supported_datablocks(supported_types_id):
    global client

    for type_id in supported_types_id:
        if hasattr(bpy.data,type_id):
            for item in getattr(bpy.data,type_id):
                add_datablock(item)


# def default_tick():
#     upload_client_instance_position()

#     return .1


# def register_ticks():
#     # REGISTER Updaters
#     bpy.app.timers.register(default_tick)
#     bpy.app.timers.register(execute_queued_functions)


# def unregister_ticks():
    # REGISTER Updaters
    # try:
    #     bpy.app.timers.unregister(default_tick)
    #     bpy.app.timers.unregister(execute_queued_functions)
    # except:
    #     pass


# OPERATORS
class SessionStartOperator(bpy.types.Operator):
    bl_idname = "session.start"
    bl_label = "start"
    bl_description = "connect to a net server"
    bl_options = {"REGISTER"}

    host: bpy.props.BoolProperty(default=False)


    @classmethod
    def poll(cls, context):
        return True

    def execute(self, context):
        global execution_queue, client
        settings = context.window_manager.session
        # save config
        settings.save(context)
        
        # Scene setup
        if settings.start_empty:
            utils.clean_scene()

        bpy_factory = ReplicatedDataFactory()
        supported_bl_types = []

        # init the factory with supported types
        for type in bl_types.types_to_register():
            _type = getattr(bl_types,type)
            supported_bl_types.append(_type.bl_id)
            bpy_factory.register_type(_type.bl_class,_type.bl_rep_class)
        
        client = Client(factory=bpy_factory)


        if self.host:
            client.host(
                id=settings.username,
                address=settings.ip,
                port=settings.port
            )
            
            if settings.init_scene:
                init_supported_datablocks(supported_bl_types)
        else:
            client.connect(
                id=settings.username,
                address=settings.ip,
                port=settings.port
            )
        
        usr = presence.User(
            username=settings.username,
            color=list(settings.client_color),
        )
        client.add(usr)
        
        # settings.is_running = True
        # bpy.ops.session.refresh()
        #register_ticks()

        # Launch drawing module
        if settings.enable_presence:
            presence.renderer.run()

        return {"FINISHED"}


class SessionStopOperator(bpy.types.Operator):
    bl_idname = "session.stop"
    bl_label = "close"
    bl_description = "stop net service"
    bl_options = {"REGISTER"}

    @classmethod
    def poll(cls, context):
        return True

    def execute(self, context):
        global client

        assert(client)
        
        client.disconnect()

            # del client_instance


            # unregister_ticks()
            # presence.renderer.stop()

        return {"FINISHED"}


class SessionPropertyAddOperator(bpy.types.Operator):
    bl_idname = "session.add_prop"
    bl_label = "add"
    bl_description = "broadcast a property to connected client_instances"
    bl_options = {"REGISTER"}

    property_path: bpy.props.StringProperty(default="None")
    depth: bpy.props.IntProperty(default=1)

    @classmethod
    def poll(cls, context):
        return True

    def execute(self, context):
        global client

        client.add(self.property_path)

        return {"FINISHED"}


class SessionPropertyRemoveOperator(bpy.types.Operator):
    bl_idname = "session.remove_prop"
    bl_label = "remove"
    bl_description = "broadcast a property to connected client_instances"
    bl_options = {"REGISTER"}

    property_path: bpy.props.StringProperty(default="None")

    @classmethod
    def poll(cls, context):
        return True

    def execute(self, context):
        global client
        try:
            del client.property_map[self.property_path]

            return {"FINISHED"}
        except:
            return {"CANCELED"}


class SessionPropertyRightOperator(bpy.types.Operator):
    bl_idname = "session.right"
    bl_label = "Change owner to"
    bl_description = "stop net service"
    bl_options = {"REGISTER"}

    key: bpy.props.StringProperty(default="None")

    @classmethod
    def poll(cls, context):
        return True

    def invoke(self, context, event):
        wm = context.window_manager
        return wm.invoke_props_dialog(self)

    def draw(self, context):
        layout = self.layout
        settings = context.window_manager.session

        col = layout.column()
        col.prop(settings, "clients")

    def execute(self, context):
        settings = context.window_manager.session

        if settings.is_admin:
            val = client.get(self.key)
            val[0][1]['id'] = settings.clients

            client.set(key=self.key, value=val[0][1], override=True)
            item = utils.resolve_bpy_path(self.key)
            if item:
                item.id = settings.clients
                logger.info("Updating {} rights to {}".format(
                    self.key, settings.clients))
        else:
            print("Not admin")

        return {"FINISHED"}


class SessionSnapUserOperator(bpy.types.Operator):
    bl_idname = "session.snapview"
    bl_label = "draw client_instances"
    bl_description = "Description that shows in blender tooltips"
    bl_options = {"REGISTER"}

    target_client = bpy.props.StringProperty()

    @classmethod
    def poll(cls, context):
        return True

    def execute(self, context):
        area, region, rv3d = presence.view3d_find()

        target_client = client.get(
            "Client/{}".format(self.target_client))
        if target_client:
            rv3d.view_location = target_client[0][1]['location'][0]
            rv3d.view_distance = 30.0

            return {"FINISHED"}

        return {"CANCELLED"}

        pass


class SessionDumpDatabase(bpy.types.Operator, ExportHelper):
    bl_idname = "session.dump"
    bl_label = "dump json data"
    bl_description = "dump session stored data to a json file"
    bl_options = {"REGISTER"}

    # ExportHelper mixin class uses this
    filename_ext = ".json"

    filter_glob: bpy.props.StringProperty(
        default="*.json",
        options={'HIDDEN'},
        maxlen=255,  # Max internal buffer length, longer would be clamped.
    )

    @classmethod
    def poll(cls, context):
        return True

    def execute(self, context):
        print(self.filepath)
        if client and client.state() == 3:
            client.dump(self.filepath)
            return {"FINISHED"}

        return {"CANCELLED"}

        pass


class SessionSaveConfig(bpy.types.Operator):
    bl_idname = "session.save"
    bl_label = "Save session configuration"
    bl_description = "Save session configuration"
    bl_options = {"REGISTER"}

    @classmethod
    def poll(cls, context):
        return True

    def execute(self, context):
        context.window_manager.session.save()


classes = (
    SessionStartOperator,
    SessionPropertyAddOperator,
    SessionStopOperator,
    SessionPropertyRemoveOperator,
    SessionSnapUserOperator,
    SessionPropertyRightOperator,
    SessionDumpDatabase,
    SessionSaveConfig,
)

def register():
    from bpy.utils import register_class
    for cls in classes:
        register_class(cls)

    presence.register()


def unregister():
    global client

    presence.unregister()

    if client and client.state == 2:
        client.disconnect()
        client = None

    from bpy.utils import unregister_class
    for cls in reversed(classes):
        unregister_class(cls)


if __name__ == "__main__":
    register()