import bpy
from ..core import common
from ..core.register import register_wrap
from ..functions.translations import t
from typing import List, Tuple

@register_wrap
class AutoVisemeButton(bpy.types.Operator):
    bl_idname = 'avatar_toolkit.create_visemes'
    bl_label = t('AutoVisemeButton.label')
    bl_description = t('AutoVisemeButton.desc')
    bl_options = {'REGISTER', 'UNDO'}

    @classmethod
    def poll(cls, context: bpy.types.Context) -> bool:
        return context.active_object and context.active_object.type == 'MESH'

    def execute(self, context: bpy.types.Context) -> set:
        print("Starting viseme creation...")
        mesh = context.active_object
        if not mesh or not common.has_shapekeys(mesh):
            self.report({'ERROR'}, t('AutoVisemeButton.error.noShapekeys'))
            return {'CANCELLED'}

        shape_a = context.scene.mouth_a
        shape_o = context.scene.mouth_o
        shape_ch = context.scene.mouth_ch

        print(f"Selected shapes: A={shape_a}, O={shape_o}, CH={shape_ch}")

        if shape_a == "Basis" or shape_o == "Basis" or shape_ch == "Basis":
            self.report({'ERROR'}, t('AutoVisemeButton.error.selectShapekeys'))
            return {'CANCELLED'}

        # Create visemes
        visemes: List[Tuple[str, List[Tuple[str, float]]]] = [
            ('vrc.v_aa', [(shape_a, 0.9998)]),
            ('vrc.v_ch', [(shape_ch, 0.9996)]),
            ('vrc.v_dd', [(shape_a, 0.3), (shape_ch, 0.7)]),
            ('vrc.v_e', [(shape_a, 0.5), (shape_ch, 0.2)]),
            ('vrc.v_ff', [(shape_a, 0.2), (shape_ch, 0.4)]),
            ('vrc.v_ih', [(shape_ch, 0.7), (shape_o, 0.3)]),
            ('vrc.v_kk', [(shape_a, 0.7), (shape_ch, 0.4)]),
            ('vrc.v_nn', [(shape_a, 0.2), (shape_ch, 0.7)]),
            ('vrc.v_oh', [(shape_a, 0.2), (shape_o, 0.8)]),
            ('vrc.v_ou', [(shape_o, 0.9994)]),
            ('vrc.v_pp', [(shape_a, 0.0004), (shape_o, 0.0004)]),
            ('vrc.v_rr', [(shape_ch, 0.5), (shape_o, 0.3)]),
            ('vrc.v_sil', [(shape_a, 0.0002), (shape_ch, 0.0002)]),
            ('vrc.v_ss', [(shape_ch, 0.8)]),
            ('vrc.v_th', [(shape_a, 0.4), (shape_o, 0.15)])
        ]

        for viseme_name, shape_mix in visemes:
            print(f"Creating viseme: {viseme_name}")
            self.create_viseme(mesh, viseme_name, shape_mix, context.scene.shape_intensity)

        print("Sorting shape keys...")
        common.sort_shape_keys(mesh)

        print("Viseme creation completed.")
        self.report({'INFO'}, t('AutoVisemeButton.success'))
        return {'FINISHED'}

    def create_viseme(self, mesh: bpy.types.Object, viseme_name: str, shape_mix: List[Tuple[str, float]], intensity: float) -> None:
        print(f"  Creating viseme: {viseme_name}")
        shape_keys = mesh.data.shape_keys.key_blocks

        # Remove existing viseme if it exists
        if viseme_name in shape_keys:
            print(f"  Removing existing viseme: {viseme_name}")
            mesh.shape_key_remove(shape_keys[viseme_name])

        # Create new viseme
        new_key = mesh.shape_key_add(name=viseme_name, from_mix=False)
        new_key.value = 1.0

        # Mix shapes
        for shape_name, value in shape_mix:
            if shape_name in shape_keys:
                source_shape = shape_keys[shape_name]
                print(f"    Mixing shape: {shape_name} with value: {value * intensity}")
                for i, vert in enumerate(new_key.data):
                    vert.co += (source_shape.data[i].co - shape_keys['Basis'].data[i].co) * value * intensity

        print(f"  Viseme {viseme_name} created successfully.")