from pydantic import BaseModel
from typing import Optional, List
from datetime import datetime


# --- System Settings ---
class SystemSettingBase(BaseModel):
    key: str
    value: str


class SystemSetting(SystemSettingBase):
    class Config:
        from_attributes = True


# --- Database Management ---
class BackupInfo(BaseModel):
    filename: str
    size_bytes: int
    created_at: datetime


class DatabaseStats(BaseModel):
    backup_count: int
    total_size_bytes: int


class DbSettingsUpdate(BaseModel):
    retention_count: int
    schedule_hour: int
    schedule_freq_days: int