"use client";

import { useState, useCallback } from "react";

interface UseFormOptions<T> {
  initialValues: T;
  onSubmit: (values: T) => Promise<void>;
}

export function useForm<T extends Record<string, unknown>>({ initialValues, onSubmit }: UseFormOptions<T>) {
  const [values, setValues] = useState<T>(initialValues);
  const [submitting, setSubmitting] = useState(false);
  const [error, setError] = useState<string | null>(null);

  const setField = useCallback(<K extends keyof T>(field: K, value: T[K]) => {
    setValues(prev => ({ ...prev, [field]: value }));
  }, []);

  const handleSubmit = useCallback(async (e: React.FormEvent) => {
    e.preventDefault();
    try {
      setSubmitting(true);
      setError(null);
      await onSubmit(values);
    } catch (err) {
      setError(err instanceof Error ? err.message : "Submit failed");
    } finally {
      setSubmitting(false);
    }
  }, [values, onSubmit]);

  return { values, setField, submitting, error, handleSubmit };
}