"""
Pydantic Schemas - 请求/响应数据验证
"""
from datetime import datetime
from typing import Optional, List
from pydantic import BaseModel, Field, EmailStr


# ==================== 通用响应 ====================

class ResponseBase(BaseModel):
    """基础响应"""
    code: int = 0
    message: str = "success"


class ResponseData(ResponseBase):
    """带数据的响应"""
    data: Optional[dict] = None


class ResponseList(ResponseBase):
    """带列表的响应"""
    data: List[dict] = []
    total: int = 0
    page: int = 1
    page_size: int = 10


# ==================== 认证相关 ====================

class LoginRequest(BaseModel):
    """登录请求"""
    username: str = Field(..., min_length=3, max_length=50)
    password: str = Field(..., min_length=6)


class TokenResponse(BaseModel):
    """令牌响应"""
    access_token: str
    refresh_token: str
    token_type: str = "Bearer"
    expires_in: int = 3600


class RefreshTokenRequest(BaseModel):
    """刷新令牌请求"""
    refresh_token: str


# ==================== 用户相关 ====================

class UserBase(BaseModel):
    """用户基础信息"""
    username: str = Field(..., min_length=3, max_length=50)
    email: Optional[EmailStr] = None


class UserCreate(UserBase):
    """创建用户"""
    password: str = Field(..., min_length=6)


class UserResponse(UserBase):
    """用户响应"""
    id: int
    role: str
    is_active: bool
    created_at: datetime
    
    class Config:
        from_attributes = True


class UserUpdate(BaseModel):
    """更新用户"""
    email: Optional[EmailStr] = None
    password: Optional[str] = Field(None, min_length=6)


# ==================== K 线数据相关 ====================

class KlineRequest(BaseModel):
    """K 线数据查询请求"""
    symbol: str = Field(..., description="品种代码，如 IF2406")
    period: str = Field(..., description="周期，如 1m, 5m, 1h, 1d")
    start: datetime
    end: datetime


class KlineDataItem(BaseModel):
    """单条 K 线数据"""
    time: datetime
    open: float
    high: float
    low: float
    close: float
    volume: int
    amount: Optional[float] = None
    open_interest: Optional[int] = None


class KlineResponse(ResponseBase):
    """K 线数据响应"""
    data: List[KlineDataItem] = []
    symbol: str
    period: str


# ==================== 实时行情相关 ====================

class RealtimeQuoteItem(BaseModel):
    """实时行情数据"""
    time: datetime
    symbol: str
    last_price: float
    open_price: Optional[float] = None
    high_price: Optional[float] = None
    low_price: Optional[float] = None
    prev_close: Optional[float] = None
    volume: Optional[int] = None
    amount: Optional[float] = None
    bid_price_1: Optional[float] = None
    bid_volume_1: Optional[int] = None
    ask_price_1: Optional[float] = None
    ask_volume_1: Optional[int] = None
    position: Optional[int] = None
    change_percent: Optional[float] = None  # 涨跌幅


class SubscribeRequest(BaseModel):
    """订阅请求"""
    symbols: List[str] = Field(..., description="品种代码列表")


class UnsubscribeRequest(BaseModel):
    """取消订阅请求"""
    symbols: List[str] = Field(..., description="品种代码列表")


# ==================== 告警相关 ====================

class AlertBase(BaseModel):
    """告警基础信息"""
    symbol: str = Field(..., description="品种代码")
    condition_type: str = Field(..., description="条件类型：greater_than, less_than, equals")
    condition_value: float = Field(..., description="条件值")
    alert_type: str = Field(default="price", description="告警类型：price, percent_change")


class AlertCreate(AlertBase):
    """创建告警"""
    pass


class AlertResponse(AlertBase):
    """告警响应"""
    id: int
    user_id: int
    status: str
    triggered_at: Optional[datetime] = None
    created_at: datetime
    updated_at: datetime
    
    class Config:
        from_attributes = True


class AlertUpdate(BaseModel):
    """更新告警"""
    condition_value: Optional[float] = None
    status: Optional[str] = None


# ==================== 订阅相关 ====================

class SubscriptionBase(BaseModel):
    """订阅基础信息"""
    symbol: str = Field(..., description="品种代码")
    period: Optional[str] = Field(None, description="周期")
    subscription_type: str = Field(default="kline", description="订阅类型：kline, realtime")


class SubscriptionCreate(SubscriptionBase):
    """创建订阅"""
    pass


class SubscriptionResponse(SubscriptionBase):
    """订阅响应"""
    id: int
    user_id: int
    is_active: bool
    created_at: datetime
    
    class Config:
        from_attributes = True


# ==================== API Key 相关 ====================

class APIKeyCreate(BaseModel):
    """创建 API Key"""
    name: Optional[str] = None
    permissions: Optional[List[str]] = None
    expires_days: Optional[int] = None  # 过期天数


class APIKeyResponse(BaseModel):
    """API Key 响应"""
    id: int
    name: Optional[str]
    key: str  # 仅创建时返回
    permissions: Optional[List[str]]
    expires_at: Optional[datetime]
    is_active: bool
    created_at: datetime
    
    class Config:
        from_attributes = True


# ==================== 分页参数 ====================

class PageParams(BaseModel):
    """分页参数"""
    page: int = Field(1, ge=1)
    page_size: int = Field(10, ge=1, le=100)