"""
AI视频相关的数据传输对象定义

定义数字人合成、视频合成API的请求和响应数据结构
"""
from typing import List, Optional
from decimal import Decimal
from pydantic import BaseModel, Field


# ==================== 数字人相关Schema ====================

class AvatarDetectRequest(BaseModel):
    """数字人图像检测请求"""
    image_url: str = Field(..., description="人物图片URL")


class AvatarDetectResponse(BaseModel):
    """数字人图像检测响应"""
    check_pass: bool = Field(..., description="是否通过检测")
    humanoid: bool = Field(..., description="是否为人像")
    message: Optional[str] = Field(default=None, description="检测结果说明")


class AvatarGenerateRequest(BaseModel):
    """数字人合成请求"""
    image_url: str = Field(..., description="人物图片URL")
    audio_url: str = Field(..., description="音频文件URL（wav/mp3，<15M，<20s）")
    resolution: str = Field(default="480P", description="分辨率：480P/720P")


# ==================== 视频合成相关Schema ====================

class VideoGenerateRequest(BaseModel):
    """视频生成请求（统一端点）"""
    model: Optional[str] = Field(default=None, description="视频生成模型，如 wan2.6-t2v、wan2.5-t2v-preview、wan2.6-i2v 等，不传则自动选择")
    prompt: str = Field(..., description="视频描述提示词")
    first_frame_url: Optional[str] = Field(default=None, description="首帧图片URL")
    last_frame_url: Optional[str] = Field(default=None, description="尾帧图片URL（需先有首帧）")
    negative_prompt: Optional[str] = Field(default=None, description="反向提示词")
    resolution: str = Field(default="720P", description="分辨率：720P/1080P")
    duration: int = Field(default=5, description="视频时长：5/10/15秒")
    audio_url: Optional[str] = Field(default=None, description="自定义音频URL")
    audio: bool = Field(default=True, description="是否自动生成音频")
    prompt_extend: bool = Field(default=True, description="是否智能改写提示词")
    shot_type: str = Field(default="single", description="镜头类型：single/multi（仅文生视频）")
    watermark: bool = Field(default=False, description="是否添加水印")
    seed: Optional[int] = Field(default=None, description="随机种子")


class VideoTaskResponse(BaseModel):
    """视频任务创建响应"""
    task_id: str = Field(..., description="任务ID")
    task_status: str = Field(..., description="任务状态：PENDING")


class VideoTaskResult(BaseModel):
    """视频任务状态查询响应"""
    task_id: str = Field(..., description="任务ID")
    task_status: str = Field(..., description="任务状态：PENDING/RUNNING/SUCCEEDED/FAILED")
    video_url: Optional[str] = Field(default=None, description="视频OSS URL")
    video_duration: Optional[float] = Field(default=None, description="视频时长（秒）")
    actual_prompt: Optional[str] = Field(default=None, description="智能改写后的提示词")
    error_message: Optional[str] = Field(default=None, description="错误信息")


# ==================== 历史记录相关Schema ====================

class VideoHistoryItem(BaseModel):
    """视频历史记录项"""
    id: int
    task_id: str
    model_name: str
    video_type: str
    prompt: Optional[str] = None
    custom_name: Optional[str] = None
    video_url: Optional[str] = None
    video_duration: Optional[float] = None
    resolution: Optional[str] = None
    status: str
    bill: float
    created_at: str


class VideoHistoryResponse(BaseModel):
    """视频历史记录响应"""
    items: List[VideoHistoryItem]
    total: int
    page: int
    page_size: int


# ==================== 模型配置相关Schema ====================

class VideoModelConfigResponse(BaseModel):
    """视频模型配置响应"""
    model_name: str
    model_id: str
    model_type: str
    supported_params: dict


class VideoModelInfo(BaseModel):
    """视频模型信息"""
    model_id: str
    model_name: str
    description: str
    video_type: str   # 'text_to_video' | 'image_to_video' | 'avatar'
    price_per_second: str


class UpdateVideoNameRequest(BaseModel):
    """更新视频名称请求"""
    custom_name: str = Field(..., max_length=200, description="自定义名称")