"""
图片生成数据传输对象定义

定义图片生成API请求和响应的数据结构
"""
from datetime import datetime
from typing import List, Optional
from decimal import Decimal
from pydantic import BaseModel, ConfigDict, Field


class TextToImageRequest(BaseModel):
    """文生图请求"""
    prompt: str = Field(..., min_length=1, description="文本提示词")
    model: str = Field(default="wanx2.1-t2i-turbo", description="模型名称")
    n: int = Field(default=1, ge=1, le=4, description="生成图片数量")
    size: str = Field(default="1024*1024", description="图片尺寸")
    negative_prompt: Optional[str] = Field(default=None, description="负面提示词")
    prompt_extend: bool = Field(default=True, description="是否开启提示词智能改写(wan2.6)")
    watermark: bool = Field(default=False, description="是否添加水印")
    seed: Optional[int] = Field(default=None, description="随机数种子")


class TextToImageResponse(BaseModel):
    """文生图响应"""
    success: bool
    images: List[str] = Field(default_factory=list, description="OSS图片URL列表")
    bill: Decimal = Field(default=Decimal("0"), description="费用")
    record_id: int = Field(default=0, description="记录ID")
    error: Optional[str] = Field(default=None, description="错误信息")


class ImageToImageRequest(BaseModel):
    """图生图请求"""
    prompt: str = Field(..., min_length=1, description="文本提示词")
    model: str = Field(default="wanx2.1-imageedit", description="模型名称")
    n: int = Field(default=1, ge=1, le=4, description="生成图片数量")
    size: str = Field(default="1024*1024", description="图片尺寸")


class ImageToImageResponse(BaseModel):
    """图生图响应"""
    success: bool
    images: List[str] = Field(default_factory=list, description="OSS图片URL列表")
    bill: Decimal = Field(default=Decimal("0"), description="费用")
    record_id: int = Field(default=0, description="记录ID")
    error: Optional[str] = Field(default=None, description="错误信息")


class ImageModelInfo(BaseModel):
    """图片模型信息"""
    model_id: str = Field(..., description="模型ID")
    model_name: str = Field(..., description="模型名称")
    description: str = Field(default="", description="模型描述")
    price_per_image: Decimal = Field(..., description="每张图片价格")
    supported_sizes: List[str] = Field(default_factory=list, description="支持的尺寸")


class ImageHistoryItem(BaseModel):
    """历史记录项"""
    id: int
    model_name: str
    input_type: str
    input_data: str
    image_count: int
    output_images: List[str]
    bill: Decimal
    created_at: datetime

    model_config = ConfigDict(from_attributes=True)


class ImageHistoryResponse(BaseModel):
    """历史记录响应"""
    items: List[ImageHistoryItem]
    total: int
    page: int
    page_size: int