frontend/src/hooks/useApiCall.ts

import { useState, useCallback } from "react";
import { getErrorMessage } from "../api";

/**
 * Generic hook for API calls with loading/error/result state.
 * Eliminates the repeated try/catch/setLoading/setError pattern.
 */
export function useApiCall<T>() {
  const [data, setData] = useState<T | null>(null);
  const [loading, setLoading] = useState(false);
  const [error, setError] = useState("");

  const run = useCallback(async (fn: () => Promise<T>): Promise<T | null> => {
    setLoading(true);
    setError("");
    try {
      const result = await fn();
      setData(result);
      return result;
    } catch (err) {
      setError(getErrorMessage(err));
      return null;
    } finally {
      setLoading(false);
    }
  }, []);

  const clear = useCallback(() => {
    setData(null);
    setError("");
  }, []);

  return { data, loading, error, setError, run, clear };
}