from datetime import datetime, date
from decimal import Decimal
from pydantic import BaseModel, Field


class CurrencyCreate(BaseModel):
    code: str = Field(..., min_length=3, max_length=3)
    name: str = Field(..., max_length=100)
    symbol: str | None = Field(None, max_length=10)
    is_active: bool = True


class CurrencyUpdate(BaseModel):
    name: str | None = Field(None, max_length=100)
    symbol: str | None = Field(None, max_length=10)
    is_active: bool | None = None


class CurrencyOut(BaseModel):
    id: int
    code: str
    name: str
    symbol: str | None = None
    is_active: bool

    model_config = {"from_attributes": True}


class ExchangeRateCreate(BaseModel):
    currency_from_id: int
    currency_to_id: int
    rate: Decimal = Field(..., gt=0)
    rate_date: date
    source: str | None = None


class ExchangeRateOut(BaseModel):
    id: int
    currency_from_id: int
    currency_to_id: int
    rate: Decimal
    rate_date: date
    source: str | None = None
    created_at: datetime
    currency_from: CurrencyOut
    currency_to: CurrencyOut

    model_config = {"from_attributes": True}