import json
from sqlite3 import Row
from typing import Optional

from pydantic import BaseModel


class MerchantConfig(BaseModel):
    name: Optional[str]


class PartialMerchant(BaseModel):
    private_key: str
    public_key: str
    config: MerchantConfig = MerchantConfig()


class Merchant(PartialMerchant):
    id: str

    @classmethod
    def from_row(cls, row: Row) -> "Merchant":
        merchant = cls(**dict(row))
        merchant.config = MerchantConfig(**json.loads(row["meta"]))
        return merchant