import { useContracts } from "../../useContracts/useContracts";
import { useState } from "react";
import { doTransaction } from "../../../utils/transactions/transactions";
import { useUserPositions } from "../useUserPositions/useUserPositions";
import { usePollForPositionChange } from "../usePollForPositionChange/usePollForPositionChange";
import { UserPosition } from "../../../state";

/**
 * A hook to deposit to an existing position (deposit), with approval if required
 */
export const useUpdatePosition = (positionId: number) => {
  const [loading, setLoading] = useState(false);
  const { reliquary } = useContracts();
  const { userPositions } = useUserPositions();
  const poll = usePollForPositionChange(positionId);

  const position = userPositions[positionId];

  const update = async () => {
    try {
      setLoading(true);

      await doTransaction(() => reliquary.updatePosition(positionId));

      const positionDidChangeFromUpgrade = (pos: UserPosition) =>
        pos.level > position.level;

      const updatedPosition = await poll(positionDidChangeFromUpgrade);

      setLoading(false);
      return updatedPosition;
    } catch (e: any) {
      setLoading(false);
      throw e;
    }
  };

  return {
    loading,
    update,
  };
};