from pydantic import BaseModel, Field
from datetime import datetime
from typing import Optional, List

# 商品基础信息
class ProductBase(BaseModel):
    category_id: int = Field(default=0, description="分类 ID")
    product_number: str = Field(default="", description="产品货号，11 位 UUID", max_length=11)
    model: str = Field(default="", description="产品型号，业务输入", max_length=50)
    name: str = Field(default="", description="产品名称", max_length=200)
    brand: str = Field(default="", description="品牌名称", max_length=100)
    price: float = Field(default=0.0, description="价格")
    original_price: float = Field(default=0.0, description="原价")
    currency: str = Field(default="USD", description="货币符号", max_length=10)
    stock: int = Field(default=0, description="库存")
    min_order: int = Field(default=1, description="最小起订量")
    unit: str = Field(default="pcs", description="计量单位", max_length=20)
    status: int = Field(default=1, description="状态：0-下架，1-上架")
    is_new: int = Field(default=0, description="是否新品：0-否，1-是")
    is_hot: int = Field(default=0, description="是否热销：0-否，1-是")
    is_best_seller: int = Field(default=0, description="是否畅销：0-否，1-是")
    sort_order: int = Field(default=0, description="排序顺序")
    
    # 商品详情字段
    description: str = Field(default="", description="功能描述")
    usage: str = Field(default="", description="适用范围")
    material: str = Field(default="", description="材质", max_length=200)
    parameters: str = Field(default="", description="其他参数说明")
    
    # SEO 字段
    seo_title_tag: str = Field(default="", description="SEO 页面标题", max_length=200)
    seo_meta_keywords: str = Field(default="", description="SEO 元关键词", max_length=500)
    
    # 产地字段
    country_of_origin: str = Field(default="", description="原产国", max_length=100)
    made_in_label: str = Field(default="", description="Made in 标签", max_length=100)
    
    company_code: str = Field(default="", description="公司编码", max_length=50)

class ProductCreate(ProductBase):
    pass

class ProductUpdate(BaseModel):
    category_id: Optional[int] = None
    product_number: Optional[str] = None
    model: Optional[str] = None
    name: Optional[str] = None
    brand: Optional[str] = None
    price: Optional[float] = None
    original_price: Optional[float] = None
    currency: Optional[str] = None
    stock: Optional[int] = None
    min_order: Optional[int] = None
    unit: Optional[str] = None
    status: Optional[int] = None
    is_new: Optional[int] = None
    is_hot: Optional[int] = None
    is_best_seller: Optional[int] = None
    sort_order: Optional[int] = None
    description: Optional[str] = None
    usage: Optional[str] = None
    material: Optional[str] = None
    parameters: Optional[str] = None
    seo_title_tag: Optional[str] = None
    seo_meta_keywords: Optional[str] = None
    country_of_origin: Optional[str] = None
    made_in_label: Optional[str] = None

class ProductResponse(ProductBase):
    id: int
    created_at: datetime
    updated_at: Optional[datetime] = None
    
    class Config:
        from_attributes = True

# 商品媒体
class ProductMediaBase(BaseModel):
    product_number: str = Field(default="", description="产品货号", max_length=11)
    media_type: str = Field(default="image", description="媒体类型：image-图片，video-视频", max_length=20)
    r2_url: str = Field(default="", description="媒体 URL（R2 原图 URL）", max_length=500)
    thumbnail_r2_url: str = Field(default="", description="缩略图 URL（R2 缩略图 URL）", max_length=500)
    media_id: str = Field(default="", description="素材ID", max_length=32)
    media_alt: str = Field(default="", description="ALT 标签/描述", max_length=200)
    is_main: int = Field(default=0, description="是否主图：0-否，1-是")
    sort_order: int = Field(default=0, description="排序顺序")
    company_code: str = Field(default="", description="公司编码", max_length=50)

class ProductMediaCreate(ProductMediaBase):
    pass

class ProductMediaUpdate(BaseModel):
    media_type: Optional[str] = None
    r2_url: Optional[str] = None
    thumbnail_r2_url: Optional[str] = None
    media_id: Optional[str] = None
    media_alt: Optional[str] = None
    is_main: Optional[int] = None
    sort_order: Optional[int] = None

class ProductMediaResponse(ProductMediaBase):
    id: int
    created_at: datetime
    updated_at: datetime
    
    class Config:
        from_attributes = True

# 商品认证
class ProductCertificationBase(BaseModel):
    product_number: str = Field(default="", description="产品货号", max_length=11)
    certification_type: str = Field(default="", description="认证类型", max_length=50)
    r2_url: str = Field(default="", description="认证文件 URL（R2 URL）", max_length=500)
    thumbnail_r2_url: str = Field(default="", description="认证缩略图路径（R2 URL）", max_length=500)
    media_id: str = Field(default="", description="素材ID", max_length=32)
    company_code: str = Field(default="", description="公司编码", max_length=50)

class ProductCertificationCreate(ProductCertificationBase):
    pass

class ProductCertificationUpdate(BaseModel):
    certification_type: Optional[str] = None
    r2_url: Optional[str] = None
    thumbnail_r2_url: Optional[str] = None
    media_id: Optional[str] = None

class ProductCertificationResponse(ProductCertificationBase):
    id: int
    created_at: datetime
    updated_at: datetime
    
    class Config:
        from_attributes = True

# 商品包装
class ProductPackagingBase(BaseModel):
    product_number: str = Field(default="", description="产品货号", max_length=11)
    model: str = Field(default="", description="型号", max_length=50)
    length: float = Field(default=0.0, description="长度 (cm)")
    width: float = Field(default=0.0, description="宽度 (cm)")
    height: float = Field(default=0.0, description="高度 (cm)")
    volume: float = Field(default=0.0, description="体积 (cm³)")
    weight: float = Field(default=0.0, description="重量 (g)")
    company_code: str = Field(default="", description="公司编码", max_length=50)

class ProductPackagingCreate(ProductPackagingBase):
    pass

class ProductPackagingUpdate(BaseModel):
    model: Optional[str] = None
    length: Optional[float] = None
    width: Optional[float] = None
    height: Optional[float] = None
    volume: Optional[float] = None
    weight: Optional[float] = None

class ProductPackagingResponse(ProductPackagingBase):
    id: int
    created_at: datetime
    updated_at: datetime
    
    class Config:
        from_attributes = True

# 商品详情（包含所有关联数据）
class ProductDetailResponse(ProductResponse):
    media: List[ProductMediaResponse] = []
    certifications: List[ProductCertificationResponse] = []
    packaging: List[ProductPackagingResponse] = []
    
    class Config:
        from_attributes = True

# 公司 R2 配置
class CompanyR2ConfigBase(BaseModel):
    company_code: str = Field(..., description="公司编码")
    r2_account_id: str = Field(..., description="R2 账户 ID")
    r2_access_key_id: str = Field(..., description="R2 访问密钥 ID")
    r2_secret_access_key: str = Field(..., description="R2 密钥")
    r2_bucket_name: str = Field(..., description="R2 桶名称")
    r2_public_url: str = Field(..., description="R2 公共访问 URL")
    r2_enabled: int = Field(..., description="是否启用 R2：0-禁用，1-启用")

class CompanyR2ConfigCreate(CompanyR2ConfigBase):
    pass

class CompanyR2ConfigUpdate(BaseModel):
    r2_account_id: Optional[str] = None
    r2_access_key_id: Optional[str] = None
    r2_secret_access_key: Optional[str] = None
    r2_bucket_name: Optional[str] = None
    r2_public_url: Optional[str] = None
    r2_enabled: Optional[int] = None

class CompanyR2ConfigResponse(CompanyR2ConfigBase):
    id: int
    created_at: datetime
    updated_at: Optional[datetime] = None
    company_name: Optional[str] = None
    
    class Config:
        from_attributes = True