from fastapi import APIRouter, Depends, Header, HTTPException, status
from pydantic import BaseModel
from sqlalchemy.ext.asyncio import AsyncSession

from app.config import settings
from app.db.session import get_session
from app.rounds.config import get_round_config

router = APIRouter(prefix="/admin", tags=["admin"])


async def require_admin(x_admin_token: str = Header(default="")) -> None:
    if not settings.admin_token or x_admin_token != settings.admin_token:
        raise HTTPException(status.HTTP_403_FORBIDDEN, "invalid admin token")


class RoundConfigResponse(BaseModel):
    fee_address: str
    bet_amount_sats: int


class RoundConfigUpdate(BaseModel):
    fee_address: str | None = None
    bet_amount_sats: int | None = None


@router.get("/config", response_model=RoundConfigResponse, dependencies=[Depends(require_admin)])
async def read_config(session: AsyncSession = Depends(get_session)) -> RoundConfigResponse:
    config = await get_round_config(session)
    await session.commit()
    return RoundConfigResponse(fee_address=config.fee_address, bet_amount_sats=config.bet_amount_sats)


@router.put("/config", response_model=RoundConfigResponse, dependencies=[Depends(require_admin)])
async def update_config(
    body: RoundConfigUpdate, session: AsyncSession = Depends(get_session)
) -> RoundConfigResponse:
    config = await get_round_config(session)
    if body.fee_address is not None:
        config.fee_address = body.fee_address
    if body.bet_amount_sats is not None:
        config.bet_amount_sats = body.bet_amount_sats
    await session.commit()
    return RoundConfigResponse(fee_address=config.fee_address, bet_amount_sats=config.bet_amount_sats)