import uuid

from sqlalchemy import select
from sqlalchemy.ext.asyncio import AsyncSession

from app.models.setting import Setting


async def get_setting(db: AsyncSession, key: str) -> Setting | None:
    result = await db.execute(select(Setting).where(Setting.key == key))
    return result.scalar_one_or_none()


async def get_setting_value(db: AsyncSession, key: str, default=None):
    setting = await get_setting(db, key)
    return setting.value if setting else default


async def get_all_settings(db: AsyncSession) -> list[Setting]:
    result = await db.execute(select(Setting).order_by(Setting.key))
    return list(result.scalars().all())


async def upsert_setting(db: AsyncSession, key: str, value, admin_user_id: uuid.UUID) -> Setting:
    setting = await get_setting(db, key)
    if setting:
        setting.value = value
        setting.updated_by = admin_user_id
    else:
        setting = Setting(key=key, value=value, updated_by=admin_user_id)
        db.add(setting)
    await db.flush()
    return setting