import { useEffect, useState } from "react";
import { usePracticeAddressApi } from "../services/practiceAddressApi";
import { normalizeAddressLabel, type AddressCheck } from "../utils/practiceAddress";

const DEBOUNCE_MS = 300;

// Checks the label as it is typed. Each answer is stored against the label it was for; the
// caller compares that with the current value before trusting it.
export const usePracticeAddressCheck = (value: string, enabled = true) => {
  const { checkAddress } = usePracticeAddressApi();
  const label = normalizeAddressLabel(value);
  const [check, setCheck] = useState<AddressCheck>();
  const [attempt, setAttempt] = useState(0);

  useEffect(() => {
    if (!enabled || !label) {
      setCheck(undefined);
      return;
    }
    let cancelled = false;
    setCheck({ label, state: "checking" });
    const timer = setTimeout(() => {
      void checkAddress(label).then((state) => {
        if (!cancelled) setCheck({ label, state });
      });
    }, DEBOUNCE_MS);
    return () => {
      cancelled = true;
      clearTimeout(timer);
    };
  }, [label, enabled, attempt, checkAddress]);

  return { check, retry: () => setAttempt((n) => n + 1) };
};