from pydantic import BaseModel, Field
from typing import List, Optional, Dict, Any
from decimal import Decimal
from datetime import datetime

class UserAuthRequest(BaseModel):
    address: str = Field(..., description="EVM 钱包地址")
    signature: str = Field(..., description="签名")
    message: str = Field(..., description="SIWE 原始签名消息")

class TokenResponse(BaseModel):
    access_token: str
    token_type: str = "bearer"
    address: str

class AccountBalanceDTO(BaseModel):
    address: str
    collateral_symbol: str
    available_balance: Decimal
    frozen_balance: Decimal

class LedgerEntryDTO(BaseModel):
    id: int
    entry_type: str
    amount: Decimal
    balance_after: Decimal
    frozen_after: Decimal
    related_market: Optional[str] = None
    created_at: datetime

class CreateMarketRequest(BaseModel):
    title: str
    description: Optional[str] = None
    category: str = "Crypto"
    tier: int = 1
    resolution_time: datetime
    outcomes: List[str] = Field(..., min_length=2, max_length=8)

class MarketDTO(BaseModel):
    market_address: str
    question_id: str
    title: str
    description: Optional[str] = None
    category: str
    tier: int
    creator: str
    status: str
    outcomes: List[str]
    winning_outcome: Optional[int] = None
    resolution_time: datetime
    created_at: datetime

class CreateOrderRequest(BaseModel):
    market_address: str
    outcome_index: int = Field(..., ge=0, le=7)
    side: str = Field(..., pattern="^(BUY|SELL)$")
    amount: Decimal = Field(..., gt=0)
    price: Optional[Decimal] = None

class OrderDTO(BaseModel):
    order_id: str
    market_address: str
    user_address: str
    side: str
    outcome_index: int
    amount: Decimal
    status: str
    fee: Decimal
    created_at: datetime