import bpy.types
from bpy.props import *
from nodeitems_utils import NodeItem
import arm.utils

nodes = []
category_items = {}

object_sockets = dict()
array_nodes = dict()

class ArmLogicTreeNode:
    @classmethod
    def poll(cls, ntree):
        return ntree.bl_idname == 'ArmLogicTreeType'

class ArmActionSocket(bpy.types.NodeSocket):
    bl_idname = 'ArmNodeSocketAction'
    bl_label = 'Action Socket'

    def draw(self, context, layout, node, text):
        layout.label(text=self.name)

    def draw_color(self, context, node):
        return (0.8, 0.3, 0.3, 1)

class ArmArraySocket(bpy.types.NodeSocket):
    bl_idname = 'ArmNodeSocketArray'
    bl_label = 'Array Socket'

    def draw(self, context, layout, node, text):
        layout.label(text=self.name)

    def draw_color(self, context, node):
        return (0.8, 0.4, 0.0, 1)

class ArmObjectSocket(bpy.types.NodeSocket):
    bl_idname = 'ArmNodeSocketObject'
    bl_label = 'Object Socket'
    default_value_get: PointerProperty(name='Object', type=bpy.types.Object)
    default_value: StringProperty(name='Object', default='') # TODO: deprecated, using PointerProperty now

    def get_default_value(self):
        if self.default_value_get == None:
            return ''
        if self.default_value_get.name not in bpy.data.objects:
            return self.default_value_get.name
        return arm.utils.asset_name(bpy.data.objects[self.default_value_get.name])

    def __init__(self):
        global object_sockets
        # Buckle up..
        # Match id strings to socket dict to retrieve socket in eyedropper operator
        object_sockets[str(id(self))] = self

    def draw(self, context, layout, node, text):
        if self.is_output:
            layout.label(text=self.name)
        elif self.is_linked:
            layout.label(text=self.name)
        else:
            row = layout.row(align=True)
            row.prop_search(self, 'default_value_get', bpy.context.scene, 'objects', icon='NONE', text='')
            op = row.operator('arm.node_eyedrop', text='', icon='EYEDROPPER', emboss=True)
            op.socket_index = str(id(self))

    def draw_color(self, context, node):
        return (0.15, 0.55, 0.75, 1)

class ArmNodeEyedropButton(bpy.types.Operator):
    '''Pick selected object'''
    bl_idname = 'arm.node_eyedrop'
    bl_label = 'Eyedrop'
    socket_index: StringProperty(name='Socket Index', default='')

    def execute(self, context):
        global object_sockets
        obj = bpy.context.active_object
        if obj != None:
            object_sockets[self.socket_index].default_value_get = obj
        return{'FINISHED'}

class ArmAnimActionSocket(bpy.types.NodeSocket):
    bl_idname = 'ArmNodeSocketAnimAction'
    bl_label = 'Action Socket'
    default_value_get: PointerProperty(name='Action', type=bpy.types.Action)
    default_value: StringProperty(name='Action', default='') # TODO: deprecated, using PointerProperty now

    def get_default_value(self):
        if self.default_value_get == None:
            return ''
        if self.default_value_get.name not in bpy.data.actions:
            return self.default_value_get.name
        name = arm.utils.asset_name(bpy.data.actions[self.default_value_get.name])
        return arm.utils.safestr(name)

    def draw(self, context, layout, node, text):
        if self.is_output:
            layout.label(text=self.name)
        elif self.is_linked:
            layout.label(text=self.name)
        else:
            layout.prop_search(self, 'default_value_get', bpy.data, 'actions', icon='NONE', text='')

    def draw_color(self, context, node):
        return (0.8, 0.8, 0.8, 1)

class ArmNodeAddInputButton(bpy.types.Operator):
    '''Add new input'''
    bl_idname = 'arm.node_add_input'
    bl_label = 'Add Input'
    node_index: StringProperty(name='Node Index', default='')
    socket_type: StringProperty(name='Socket Type', default='NodeSocketShader')
    name_format: StringProperty(name='Name Format', default='Input {0}')
    index_name_offset: IntProperty(name='Index Name Offset', default=0)

    def execute(self, context):
        global array_nodes
        inps = array_nodes[self.node_index].inputs
        inps.new(self.socket_type, self.name_format.format(str(len(inps) + self.index_name_offset)))
        return{'FINISHED'}

class ArmNodeAddInputValueButton(bpy.types.Operator):
    '''Add new input'''
    bl_idname = 'arm.node_add_input_value'
    bl_label = 'Add Input'
    node_index: StringProperty(name='Node Index', default='')
    socket_type: StringProperty(name='Socket Type', default='NodeSocketShader')

    def execute(self, context):
        global array_nodes
        inps = array_nodes[self.node_index].inputs
        inps.new(self.socket_type, 'Value')
        return{'FINISHED'}

class ArmNodeRemoveInputButton(bpy.types.Operator):
    '''Remove last input'''
    bl_idname = 'arm.node_remove_input'
    bl_label = 'Remove Input'
    node_index: StringProperty(name='Node Index', default='')

    def execute(self, context):
        global array_nodes
        node = array_nodes[self.node_index]
        inps = node.inputs
        min_inps = 0 if not hasattr(node, 'min_inputs') else node.min_inputs
        if len(inps) > min_inps:
            inps.remove(inps.values()[-1])
        return{'FINISHED'}

class ArmNodeRemoveInputValueButton(bpy.types.Operator):
    '''Remove last input'''
    bl_idname = 'arm.node_remove_input_value'
    bl_label = 'Remove Input'
    node_index: StringProperty(name='Node Index', default='')

    def execute(self, context):
        global array_nodes
        node = array_nodes[self.node_index]
        inps = node.inputs
        min_inps = 0 if not hasattr(node, 'min_inputs') else node.min_inputs
        if len(inps) > min_inps and inps[-1].name == 'Value':
            inps.remove(inps.values()[-1])
        return{'FINISHED'}

class ArmNodeAddOutputButton(bpy.types.Operator):
    '''Add new output'''
    bl_idname = 'arm.node_add_output'
    bl_label = 'Add Output'
    node_index: StringProperty(name='Node Index', default='')
    socket_type: StringProperty(name='Socket Type', default='NodeSocketShader')
    name_format: StringProperty(name='Name Format', default='Output {0}')
    index_name_offset: IntProperty(name='Index Name Offset', default=0)

    def execute(self, context):
        global array_nodes
        outs = array_nodes[self.node_index].outputs
        outs.new(self.socket_type, self.name_format.format(str(len(outs) + self.index_name_offset)))
        return{'FINISHED'}

class ArmNodeRemoveOutputButton(bpy.types.Operator):
    '''Remove last output'''
    bl_idname = 'arm.node_remove_output'
    bl_label = 'Remove Output'
    node_index: StringProperty(name='Node Index', default='')

    def execute(self, context):
        global array_nodes
        node = array_nodes[self.node_index]
        outs = node.outputs
        min_outs = 0 if not hasattr(node, 'min_outputs') else node.min_outputs
        if len(outs) > min_outs:
            outs.remove(outs.values()[-1])
        return{'FINISHED'}

class ArmNodeAddInputOutputButton(bpy.types.Operator):
    '''Add new input and output'''
    bl_idname = 'arm.node_add_input_output'
    bl_label = 'Add Input Output'
    node_index: StringProperty(name='Node Index', default='')
    in_socket_type: StringProperty(name='In Socket Type', default='NodeSocketShader')
    out_socket_type: StringProperty(name='Out Socket Type', default='NodeSocketShader')
    in_name_format: StringProperty(name='In Name Format', default='Input {0}')
    out_name_format: StringProperty(name='Out Name Format', default='Output {0}')
    in_index_name_offset: IntProperty(name='Index Name Offset', default=0)

    def execute(self, context):
        global array_nodes
        node = array_nodes[self.node_index]
        inps = node.inputs
        outs = node.outputs
        inps.new(self.in_socket_type, self.in_name_format.format(str(len(inps) + self.in_index_name_offset)))
        outs.new(self.out_socket_type, self.out_name_format.format(str(len(outs))))
        return{'FINISHED'}

class ArmNodeRemoveInputOutputButton(bpy.types.Operator):
    '''Remove last input and output'''
    bl_idname = 'arm.node_remove_input_output'
    bl_label = 'Remove Input Output'
    node_index: StringProperty(name='Node Index', default='')

    def execute(self, context):
        global array_nodes
        node = array_nodes[self.node_index]
        inps = node.inputs
        outs = node.outputs
        min_inps = 0 if not hasattr(node, 'min_inputs') else node.min_inputs
        min_outs = 0 if not hasattr(node, 'min_outputs') else node.min_outputs
        if len(inps) > min_inps:
            inps.remove(inps.values()[-1])
        if len(outs) > min_outs:
            outs.remove(outs.values()[-1])
        return{'FINISHED'}

def add_node(node_class, category):
    global nodes
    nodes.append(node_class)
    if category_items.get(category) == None:
        category_items[category] = []
    category_items[category].append(NodeItem(node_class.bl_idname))

bpy.utils.register_class(ArmActionSocket)
bpy.utils.register_class(ArmArraySocket)
bpy.utils.register_class(ArmObjectSocket)
bpy.utils.register_class(ArmNodeEyedropButton)
bpy.utils.register_class(ArmAnimActionSocket)
bpy.utils.register_class(ArmNodeAddInputButton)
bpy.utils.register_class(ArmNodeAddInputValueButton)
bpy.utils.register_class(ArmNodeRemoveInputButton)
bpy.utils.register_class(ArmNodeRemoveInputValueButton)
bpy.utils.register_class(ArmNodeAddOutputButton)
bpy.utils.register_class(ArmNodeRemoveOutputButton)
bpy.utils.register_class(ArmNodeAddInputOutputButton)
bpy.utils.register_class(ArmNodeRemoveInputOutputButton)
