# models.py
import re
from pydantic import BaseModel, Field, field_validator  # 🧹 P2修复：pydantic v2 已废弃 v1 风格 validator
from typing import Optional, List, Literal
from profile_media import normalize_profile_media

def _validate_email_format(email: str) -> str:
    """邮箱格式校验"""
    if not re.match(r'^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$', email):
        raise ValueError('邮箱格式不正确')
    return email

def _validate_password_length(password: str) -> str:
    """密码长度校验：6-64字符（兼容旧用户短密码）"""
    if len(password) < 6:
        raise ValueError('密码长度不能少于6个字符')
    if len(password) > 64:
        raise ValueError('密码长度不能超过64个字符')
    return password

class SendCodeRequest(BaseModel):
    contact: str = Field(..., min_length=1, max_length=254)
    contact_type: Literal["email", "phone"]
    action_type: Literal["register", "reset", "recover", "withdraw"]
    account: Optional[str] = None  

class UserRegister(BaseModel):
    account: str   
    password: str  
    email: str     
    phone: Optional[str] = "" 
    name: str      
    gender: str
    code: str      
    avatarDataUrl: Optional[str] = None
    age: Optional[int] = None
    country: Optional[str] = None
    region: Optional[str] = None
    intro: Optional[str] = None
    
    # 🧹 P2修复：v2 中下划线前缀属性会被当作私有属性而非校验器，改用 field_validator 显式挂载（校验逻辑不变）
    @field_validator('password')
    @classmethod
    def _check_password(cls, v):
        return _validate_password_length(v)

    @field_validator('email')
    @classmethod
    def _check_email(cls, v):
        return _validate_email_format(v)

    @field_validator('avatarDataUrl')
    @classmethod
    def _check_avatar_url(cls, value):
        return normalize_profile_media(value)

class UserLogin(BaseModel):
    account: str   
    password: str
    remember: Optional[bool] = True  # 保持登录选项：True=30天, False=24小时
    
    @field_validator('password')
    @classmethod
    def _check_password(cls, v):
        return _validate_password_length(v)

class UserUpdate(BaseModel):
    name: Optional[str] = None
    intro: Optional[str] = None
    age: Optional[int] = None
    birthday: Optional[str] = None          # 🚀 出生日期
    country: Optional[str] = None
    region: Optional[str] = None
    gender: Optional[str] = None
    avatarDataUrl: Optional[str] = None
    bannerUrl: Optional[str] = None         # 🚀 个人资料卡背景图云端URL

    @field_validator('avatarDataUrl', 'bannerUrl')
    @classmethod
    def _check_media_url(cls, value):
        return normalize_profile_media(value)

class SettingsPrivacy(BaseModel):
    model_config = {"extra": "forbid"}
    follows: bool = Field(strict=True)
    likes: bool = Field(strict=True)
    favorites: bool = Field(strict=True)
    downloads: bool = Field(strict=True)

class UserSettings(UserUpdate):
    model_config = {"extra": "forbid"}
    privacy: SettingsPrivacy

# 🧹 P2清理：移除零引用的 PasswordReset 模型（重置密码实际走 UserUpdate/专用端点）

class CommentCreate(BaseModel):
    item_id: str
    author: str 
    content: str
    reply_to_user: Optional[str] = None
    parent_id: Optional[str] = None 

class ItemCreate(BaseModel):
    request_id: Optional[str] = Field(default=None, strict=True, pattern=r'^[0-9a-f]{32}$')
    type: str
    title: str
    shortDesc: str
    fullDesc: str
    link: str
    coverUrl: Optional[str] = None
    imageUrls: Optional[List[str]] = []
    author: str 
    price: int = Field(default=0, ge=0, strict=True)
    github_token: Optional[str] = None
    netdisk_password: Optional[str] = None  # ☁️ 网盘提取码（加密存储，购买后解密）
    is_netdisk: Optional[bool] = False      # ☁️ 是否为网盘资源
    is_original: Optional[bool] = False     # 🎨 是否为原创作品
    allow_refund: Optional[bool] = True     # 💸 是否支持退款（默认支持）

class ItemUpdate(BaseModel):
    expected_revision: Optional[int] = Field(default=None, ge=0, le=9007199254740991, strict=True)
    title: Optional[str] = None
    shortDesc: Optional[str] = None
    fullDesc: Optional[str] = None
    link: Optional[str] = None
    coverUrl: Optional[str] = None
    imageUrls: Optional[List[str]] = None
    price: Optional[int] = Field(default=None, ge=0, strict=True)
    github_token: Optional[str] = None
    netdisk_password: Optional[str] = None  # ☁️ 网盘提取码
    is_netdisk: Optional[bool] = None       # ☁️ 是否为网盘资源
    is_original: Optional[bool] = None      # 🎨 是否为原创作品
    allow_refund: Optional[bool] = None     # 💸 是否支持退款

class FollowToggle(BaseModel):
    user_id: str
    target_account: str
    is_active: bool

class PrivateMessage(BaseModel):
    sender: str
    receiver: str
    content: str

class IdempotentPrivateMessage(PrivateMessage):
    client_request_id: str = Field(..., strict=True, min_length=32, max_length=32, pattern=r"^[0-9a-f]{32}$")


class PrivacySettings(BaseModel):
    follows: bool
    likes: bool
    favorites: bool
    downloads: bool

class InteractionToggle(BaseModel):
    item_id: str
    user_id: str
    action_type: str
    is_active: bool

class RatingRequest(BaseModel):
    score: int  # 1-5

    @field_validator("score")
    @classmethod
    def validate_score(cls, v):
        if not isinstance(v, int):
            raise ValueError("score must be an integer between 1 and 5")
        if v < 1 or v > 5:
            raise ValueError("score must be between 1 and 5")
        return v

class RechargeRequest(BaseModel):
    account: str
    amount: int = Field(..., ge=1, le=10000, strict=True)  # 单次充值1-10000
    method: Optional[str] = "alipay"

class PurchaseRequest(BaseModel):
    account: str
    item_id: str
    expected_price: Optional[int] = Field(default=None, ge=0, strict=True)

class PromptPurchaseRequest(BaseModel):
    expected_price: Optional[int] = Field(default=None, ge=0, strict=True)

class TipRequest(BaseModel):
    sender_account: str
    target_account: str
    amount: int
    is_anonymous: bool
    item_id: Optional[str] = None  # 🚀 新增：记录是为哪个作品打赏的

class WithdrawRequest(BaseModel):
    account: str
    amount: int = Field(..., ge=1, le=5000, strict=True)  # 单次提现1-5000
    alipayAccount: str = Field(..., min_length=1, max_length=256)
    real_name: str = Field(..., min_length=1, max_length=128)
    code: str = Field(..., pattern=r"^[0-9]{6}$")


# ==========================================
# 📝 任务榜数据模型
# ==========================================
class TaskCreate(BaseModel):
    """ 发布新任务 """
    title: str                              # 任务标题
    description: str                        # 任务详情
    referenceImages: Optional[List[str]] = []  # 参考图（最多6张）
    referenceLink: Optional[str] = None     # 参考链接
    totalPrice: int = Field(..., ge=0, le=2147483647, strict=True)  # SQL整数范围
    depositRatio: int = Field(..., strict=True)  # 订金比例（10/20/30/50）
    deadline: str                           # 截止时间 (ISO格式)
    publisher: str                          # 发布者账号

class TaskUpdate(BaseModel):
    """ 更新任务 """
    title: Optional[str] = None
    description: Optional[str] = None
    referenceImages: Optional[List[str]] = None
    referenceLink: Optional[str] = None
    totalPrice: Optional[int] = Field(None, ge=0, le=2147483647, strict=True)
    depositRatio: Optional[int] = Field(None, strict=True)
    deadline: Optional[str] = None

# 🔧 P2修复：以下三个 body 模型修复前后端参数通道不匹配
# （前端以 JSON body 提交，旧版端点用裸标量参数会被 FastAPI 解析为 query 导致 422）
class TaskSubmit(BaseModel):
    """ 接单者提交成果 """
    deliverables: List[str]                 # 交付成果列表
    note: Optional[str] = None              # 提交说明

class TaskDispute(BaseModel):
    """ 发起申诉 """
    reason: str                             # 申诉理由
    evidence: Optional[List[str]] = None    # 证据图片URL列表（最多6张）

class TaskDisputeResponse(BaseModel):
    """ 被申诉方回应申诉 """
    response: str                           # 回应内容
    evidence: Optional[List[str]] = None    # 证据图片URL列表（最多6张）

# 🧹 P2清理：移除零引用的 TaskApply/TaskAssign/TaskAccept 模型（对应端点使用 query 参数且前端匹配）

# ==========================================
# 💬 讨论区数据模型（小红书风格图文社区）
# ==========================================

class PostCreate(BaseModel):
    """ 创建帖子 """
    title: str                              # 标题
    content: str                            # 正文/文案
    cover_image: str                        # 封面图（第一张）
    images: Optional[List[str]] = []       # 图片列表（最多9张）
    author: str                             # 作者账号
    is_original: Optional[bool] = False     # 🎨 是否为原创作品
    post_type: str = "image"                # "image" 或 "video"
    video_url: Optional[str] = None         # 视频 URL（仅 video 类型）

class PostUpdate(BaseModel):
    """ 更新帖子 """
    title: Optional[str] = None
    content: Optional[str] = None
    cover_image: Optional[str] = None
    images: Optional[List[str]] = None
    is_original: Optional[bool] = None      # 🎨 是否为原创作品
    post_type: Optional[str] = None         # "image" 或 "video"
    video_url: Optional[str] = None         # 视频 URL（仅 video 类型）

# ==========================================
# ✨ 提示词市场数据模型（图像/视频提示词）
# ==========================================

class PromptCreate(BaseModel):
    """ 发布提示词 """
    prompt_type: str                        # "image"、"video" 或 "music"（所属子界面）
    category: str                           # 所属分类（人物/动作等）
    title: str                              # 标题
    content: str                            # 公开介绍文案
    prompt_text: str                        # 提示词正文（付费内容，服务端脱敏下发）
    cover_image: str                        # 封面图
    media_type: str = "image"               # "image" 或 "video"（示例媒体类型）
    video_url: Optional[str] = None         # 示例视频 URL（仅 media_type=video）
    audio_url: Optional[str] = None         # 示例音频 URL（仅音乐提示词，图片+音频方案；视频可选）
    images: Optional[List[str]] = None      # 图像提示词图片列表（最多9张，首张为封面）
    is_original: bool = False               # 原创作品标记
    price: int = Field(default=0, ge=0, le=10000, strict=True)  # 提示词定价（0=免费）
    tags: Optional[List[str]] = None        # 自定义标签（最多10个，每个≤12字）

class PromptUpdate(BaseModel):
    """ 更新提示词 """
    category: Optional[str] = None
    title: Optional[str] = None
    content: Optional[str] = None
    prompt_text: Optional[str] = None
    cover_image: Optional[str] = None
    media_type: Optional[str] = None
    video_url: Optional[str] = None
    audio_url: Optional[str] = None         # 示例音频 URL（仅音乐提示词；传 null 表示清除）
    images: Optional[List[str]] = None      # 图像提示词图片列表（最多9张，首张为封面）
    is_original: Optional[bool] = None      # 原创作品标记
    price: Optional[int] = Field(default=None, ge=0, le=10000, strict=True)
    tags: Optional[List[str]] = None

class PromptCategoryAdd(BaseModel):
    """ 添加提示词分类 """
    prompt_type: str                        # "image"、"video" 或 "music"
    name: str                               # 分类名称（≤8字，去重）