import logging
import sys
from uuid import uuid4
import json

import bpy
import mathutils

from . import draw
from .libs import dump_anything

CORRESPONDANCE = {'Collection': 'collections', 'Mesh': 'meshes', 'Object': 'objects', 'Material': 'materials',
                  'Texture': 'textures', 'Scene': 'scenes', 'Light': 'lights', 'Camera': 'cameras', 'Action': 'actions', 'Armature': 'armatures', 'Grease Pencil': 'grease_pencils'}

SUPPORTED_TYPES = [ 'Armature', 'Material',
                   'Texture', 'Light', 'Camera', 'Mesh', 'Grease Pencil', 'Object', 'Action', 'Collection', 'Scene']

logger = logging.getLogger(__name__)
logging.basicConfig(level=logging.DEBUG)
# UTILITY FUNCTIONS
def revers(d):
    l = []
    for i in d:
        l.append(i)
    
    return l[::-1]

def refresh_window():
    import bpy

    bpy.ops.wm.redraw_timer(type='DRAW_WIN_SWAP', iterations=1)

def get_armature_edition_context(armature):
    
    override = {}
    # Set correct area
    for area in bpy.data.window_managers[0].windows[0].screen.areas :
        if area.type == 'VIEW_3D':
            override = bpy.context.copy()
            override['area'] = area
            break

    # Set correct armature settings
    override['window'] =  bpy.data.window_managers[0].windows[0]
    override['screen'] = bpy.data.window_managers[0].windows[0].screen
    override['mode'] = 'EDIT_ARMATURE'
    override['active_object'] = armature
    override['selected_objects'] = [armature]

    for o in bpy.data.objects:
        if o.data == armature:
            override['edit_object'] = o
    
            break

    return override

def get_selected_objects(scene):
    selected_objects = []
    for obj in scene.objects:
        if obj.select_get():
            selected_objects.append(obj.name)

    return selected_objects


def get_all_datablocks():
    datas = []
    for datatype in SUPPORTED_TYPES:
        for item in getattr(bpy.data, CORRESPONDANCE[datatype]):
            item.id = bpy.context.scene.session_settings.username
            datas.append("{}/{}".format(datatype, item.name))

    return datas

#    LOAD HELPERS


def load(key, value):
    target = resolve_bpy_path(key)
    target_type = key.split('/')[0]

    if value == "None":
        return

    if target_type == 'Object':
        load_object(target=target, data=value,
                    create=True)
    elif target_type == 'Mesh':
        load_mesh(target=target, data=value,
                  create=True)
    elif target_type == 'Collection':
        load_collection(target=target, data=value,
                        create=True)
    elif target_type == 'Material':
        load_material(target=target, data=value,
                      create=True)
    elif target_type == 'Grease Pencil':
        load_gpencil(target=target, data=value,
                     create=True)
    elif target_type == 'Scene':
        load_scene(target=target, data=value,
                   create=True)
    elif 'Light' in target_type:
        load_light(target=target, data=value,
                   create=True)
    elif target_type == 'Camera':
        load_default(target=target, data=value,
                     create=True, type=target_type)
    elif target_type == 'Armature':
        load_armature(target=target, data=value,
                     create=True)
    elif target_type == 'Client':
        load_client(key.split('/')[1], value)


def resolve_bpy_path(path):
    """
    Get bpy property value from path
    """
    item = None

    try:
        path = path.split('/')
        item = getattr(bpy.data, CORRESPONDANCE[path[0]])[path[1]]

    except:
        pass

    return item


def load_client(client=None, data=None):
    C = bpy.context
    D = bpy.data
    net_settings = C.scene.session_settings

    if client and data:
        if net_settings.enable_draw:
            draw.renderer.draw_client(data)
            draw.renderer.draw_client_selected_objects(data)


def load_armature(target=None, data=None, create=False):
    file = "cache_{}.json".format(data['name'])
    context = bpy.context

    if not target:
        target = bpy.data.armatures.new(data['name'])   
    
        dump_anything.load(target, data)

        with open(file, 'w') as fp:
            json.dump(data, fp)
            fp.close()    
        
        target.id = data['id']
    else:
        # Construct a correct execution context
        file = "cache_{}.json".format(target.name)

        with open(file, 'r') as fp:
            data = json.load(fp)

            if data:
                ob = None
                for o in bpy.data.objects:
                    if o.data == target:
                        ob = o
                if ob:
                    bpy.context.view_layer.objects.active = ob
                    bpy.ops.object.mode_set(mode='EDIT', toggle=False)
                    for eb in data['edit_bones']:
                        if eb in target.edit_bones.keys():
                            # Update the bone
                            pass
                        else:
                            # Add new edit bone and load it

                            target_new_b = target.edit_bones.new[eb]
                            dump_anything.load(target_new_b, data['bones'][eb])

                        logger.info(eb)

                    bpy.ops.object.mode_set(mode='OBJECT', toggle=False)
            fp.close()
            import os
            os.remove(file)


def load_mesh(target=None, data=None, create=False):
    import bmesh

    if not target or not target.is_editmode:
        # LOAD GEOMETRY
        mesh_buffer = bmesh.new()

        for i in data["vertices"]:
            mesh_buffer.verts.new(data["vertices"][i]["co"])

        mesh_buffer.verts.ensure_lookup_table()

        for i in data["edges"]:
            verts = mesh_buffer.verts
            v1 = data["edges"][i]["vertices"][0]
            v2 = data["edges"][i]["vertices"][1]
            mesh_buffer.edges.new([verts[v1], verts[v2]])

        for p in data["polygons"]:
            verts = []
            for v in data["polygons"][p]["vertices"]:
                verts.append(mesh_buffer.verts[v])

            if len(verts) > 0:
                f = mesh_buffer.faces.new(verts)
                f.material_index= data["polygons"][p]['material_index']
    

        if target is None and create:
            target = bpy.data.meshes.new(data["name"])

        mesh_buffer.to_mesh(target)
        
        # LOAD METADATA
        dump_anything.load(target, data)

        material_to_load = []
        material_to_load = revers(data["materials"])

        target.materials.clear()
        # SLots
        i = 0
        while len(material_to_load) > len(target.materials):
            target.materials.append(bpy.data.materials[material_to_load[i]])
            i+=1
           

        target.id = data['id']
    else:
        logger.debug("Mesh can't be loaded")


def load_object(target=None, data=None, create=False):
    try:
        if target is None and create:
            pointer = None

            # Object specific constructor...
            if data["data"] in bpy.data.meshes.keys():
                pointer = bpy.data.meshes[data["data"]]
            elif data["data"] in bpy.data.lights.keys():
                pointer = bpy.data.lights[data["data"]]
            elif data["data"] in bpy.data.cameras.keys():
                pointer = bpy.data.cameras[data["data"]]
            elif data["data"] in bpy.data.curves.keys():
                pointer = bpy.data.curves[data["data"]]
            elif data["data"] in bpy.data.armatures.keys():
                pointer = bpy.data.armatures[data["data"]]
            elif data["data"] in bpy.data.grease_pencils.keys():
                pointer = bpy.data.grease_pencils[data["data"]]

            target = bpy.data.objects.new(data["name"], pointer)

            

            # Load other meshes metadata
        dump_anything.load(target, data)

        target.matrix_world = mathutils.Matrix(data["matrix_world"])

        target.id = data['id']

        client = bpy.context.scene.session_settings.username

        if target.id == client:
            target.hide_select = False
        else:
            target.hide_select = True

    except Exception as e:
        logger.error("Object {} loading error: {} ".format(data["name"],e))


def load_collection(target=None, data=None, create=False):
    try:
        if target is None and create:
            target = bpy.data.collections.new(data["name"])

        # Load other meshes metadata
        # dump_anything.load(target, data)

        # link objects
        for object in data["objects"]:
            target.objects.link(bpy.data.objects[object])

        for object in target.objects.keys():
            if object not in data["objects"]:
                target.objects.unlink(bpy.data.objects[object])

        # Link childrens
        for collection in data["children"]:
            if collection not in target.children.keys():
                target.children.link(
                    bpy.data.collections[collection])

        target.id = data['id']
    except Exception as e:
        logger.error("Collection loading error: {}".format(e))


def load_scene(target=None, data=None, create=False):
    try:
        if target is None and create:
            target = bpy.data.scenes.new(data["name"])

        # Load other meshes metadata
        dump_anything.load(target, data)

        # Load master collection
        for object in data["collection"]["objects"]:
            if object not in target.collection.objects.keys():
                target.collection.objects.link(bpy.data.objects[object])

        for object in target.collection.objects.keys():
            if object not in data["collection"]["objects"]:
                target.collection.objects.unlink(bpy.data.objects[object])
        # load collections
        # TODO: Recursive link
        for collection in data["collection"]["children"]:
            if collection not in target.collection.children.keys():
                target.collection.children.link(
                    bpy.data.collections[collection])

        target.id = data['id']
        # Load annotation
        # if data["grease_pencil"]:
        #     target.grease_pencil = bpy.data.grease_pencils[data["grease_pencil"]["name"]]
    except:
        logger.error("Scene loading error")


def load_material(target=None, data=None, create=False):
    try:
        if target is None:
            target = bpy.data.materials.new(data["name"])

        # Load other meshes metadata
        dump_anything.load(target, data)

        # load nodes
        if data["node_tree"]:
            for node in data["node_tree"]["nodes"]:
                # fix None node tree error
                if target.node_tree is None:
                    target.use_nodes = True

                index = target.node_tree.nodes.find(node)

                if index is -1:
                    node_type = data["node_tree"]["nodes"][node]["bl_idname"]

                    target.node_tree.nodes.new(type=node_type)

                dump_anything.load(
                    target.node_tree.nodes[index], data["node_tree"]["nodes"][node])

                for input in data["node_tree"]["nodes"][node]["inputs"]:

                    try:
                        target.node_tree.nodes[index].inputs[input].default_value = data[
                            "node_tree"]["nodes"][node]["inputs"][input]["default_value"]
                    except:
                        pass

            # Load nodes links
            target.node_tree.links.clear()

            for link in data["node_tree"]["links"]:
                current_link = data["node_tree"]["links"][link]
                input_socket = target.node_tree.nodes[current_link['to_node']
                                                      ['name']].inputs[current_link['to_socket']['name']]
                output_socket = target.node_tree.nodes[current_link['from_node']
                                                       ['name']].outputs[current_link['from_socket']['name']]

                target.node_tree.links.new(input_socket, output_socket)

        target.id = data['id']

    except Exception as e:
        logger.error("Material loading error: {}".format(e))


def load_gpencil_layer(target=None, data=None, create=False):

    dump_anything.load(target, data)

    for frame in data["frames"]:
        try:
            tframe = target.frames[frame]
        except:
            tframe = target.frames.new(frame)
        dump_anything.load(tframe, data["frames"][frame])
        for stroke in data["frames"][frame]["strokes"]:
            try:
                tstroke = tframe.strokes[stroke]
            except:
                tstroke = tframe.strokes.new()
            dump_anything.load(
                tstroke, data["frames"][frame]["strokes"][stroke])

            for point in data["frames"][frame]["strokes"][stroke]["points"]:
                p = data["frames"][frame]["strokes"][stroke]["points"][point]
                try:
                    tpoint = tstroke.points[point]
                except:
                    tpoint = tstroke.points.add(1)
                    tpoint = tstroke.points[len(tstroke.points)-1]
                dump_anything.load(tpoint, p)


def load_gpencil(target=None, data=None, create=False):
    try:
        if target is None and create:
            target = bpy.data.grease_pencils.new(data["name"])

        if "layers" in data.keys():
            for layer in data["layers"]:
                if layer not in target.layers.keys():
                    gp_layer = target.layers.new(data["layers"][layer]["info"])
                else:
                    gp_layer = target.layers[layer]
                load_gpencil_layer(
                    target=gp_layer, data=data["layers"][layer], create=create)

        dump_anything.load(target, data)

        target.id = data['id']
    except:
        logger.error("default loading error")


def load_light(target=None, data=None, create=False, type=None):
    try:
        if target is None and create:
            target = bpy.data.lights.new(data["name"], data["type"])

        dump_anything.load(target, data)

        target.id = data['id']
    except Exception as e:
        logger.error("light loading error: {}".format(e))


def load_default(target=None, data=None, create=False, type=None):
    try:
        if target is None and create:
            target = getattr(bpy.data, CORRESPONDANCE[type]).new(data["name"])

        dump_anything.load(target, data)

        target.id = data['id']
    except Exception as e:
        logger.error("default loading error {}".format(e))

# DUMP HELPERS
def dump(key):
    target = resolve_bpy_path(key)
    target_type = key.split('/')[0]
    data = None

    if target_type == 'Material':
        data = dump_datablock_attibute(target, ['name', 'node_tree', 'id'], 7)
    elif target_type == 'Grease Pencil':
        data = dump_datablock_attibute(
            target, ['name', 'layers', 'materials', 'id'], 9)
    elif target_type == 'Camera':
        data = dump_datablock(target, 1)
    elif target_type == 'Light':
        data = dump_datablock(target, 1)
    elif target_type == 'Mesh':
        data = dump_datablock(target, 2)
        dump_datablock_attibute(
            target, ['name', 'polygons', 'edges', 'vertices', 'id'], 6,data)
        
    elif target_type == 'Object':
        data = dump_datablock(target, 1)
    elif target_type == 'Collection':
        data = dump_datablock(target, 4)
    elif target_type == 'Scene':
        data = dump_datablock_attibute(
            target, ['name', 'collection', 'id', 'camera', 'grease_pencil'], 4)
    # elif target_type == 'Armature':
    #     data = dump_datablock(target, 4)


    return data


def dump_datablock(datablock, depth):
    if datablock:
        dumper = dump_anything.Dumper()
        dumper.type_subset = dumper.match_subset_all
        dumper.depth = depth

        datablock_type = datablock.bl_rna.name
        key = "{}/{}".format(datablock_type, datablock.name)
        data = dumper.dump(datablock)

        return data


def dump_datablock_attibute(datablock, attributes, depth=1,dickt=None):
    if datablock:
        dumper = dump_anything.Dumper()
        dumper.type_subset = dumper.match_subset_all
        dumper.depth = depth

        datablock_type = datablock.bl_rna.name
        key = "{}/{}".format(datablock_type, datablock.name)

        data = {}
        
        if dickt:
            data = dickt
        for attr in attributes:
            try:
                data[attr] = dumper.dump(getattr(datablock, attr))
            except:
                pass

        return data


def init_client(key=None):
    client_dict = {}

    C = bpy.context
    Net = C.scene.session_settings
    client_dict['uuid'] = str(uuid4())
    client_dict['location'] = [[0, 0, 0], [0, 0, 0], [0, 0, 0], [0, 0, 0]]
    client_dict['color'] = [Net.client_color.r,
                            Net.client_color.g, Net.client_color.b, 1]

    client_dict['active_objects'] = get_selected_objects(C.view_layer)

    return client_dict