from typing import List, Optional, Union

from lnbits.helpers import urlsafe_short_hash

from . import db
from .models import TPoS


async def create_tpos(*, wallet_id: str, name: str, currency: str) -> TPoS:
    tpos_id = urlsafe_short_hash()
    await db.execute(
        """
        INSERT INTO tposs (id, wallet, name, currency)
        VALUES (?, ?, ?, ?)
        """,
        (tpos_id, wallet_id, name, currency),
    )

    tpos = await get_tpos(tpos_id)
    assert tpos, "Newly created tpos couldn't be retrieved"
    return tpos


async def get_tpos(tpos_id: str) -> Optional[TPoS]:
    row = await db.fetchone("SELECT * FROM tposs WHERE id = ?", (tpos_id,))
    return TPoS.from_row(row) if row else None


async def get_tposs(wallet_ids: Union[str, List[str]]) -> List[TPoS]:
    if isinstance(wallet_ids, str):
        wallet_ids = [wallet_ids]

    q = ",".join(["?"] * len(wallet_ids))
    rows = await db.fetchall(f"SELECT * FROM tposs WHERE wallet IN ({q})", (*wallet_ids,))

    return [TPoS.from_row(row) for row in rows]


async def delete_tpos(tpos_id: str) -> None:
    await db.execute("DELETE FROM tposs WHERE id = ?", (tpos_id,))