from pydantic import BaseModel, field_validator
from datetime import datetime


class ParamOut(BaseModel):
    param_id: int
    param_key: str
    param_value: str
    param_type: str
    status: int
    is_system: bool
    description: str | None = None
    created_at: datetime

    @field_validator('is_system', mode='before')
    @classmethod
    def parse_is_system(cls, v):
        if isinstance(v, int):
            return bool(v)
        return v

    class Config:
        from_attributes = True


class ParamCreate(BaseModel):
    param_key: str
    param_value: str
    param_type: str = "string"
    status: int = 1
    is_system: bool = False
    description: str | None = None


class ParamUpdate(BaseModel):
    param_value: str | None = None
    param_type: str | None = None
    status: int | None = None
    is_system: bool | None = None
    description: str | None = None