import useSWR from 'swr';

export interface Contact {
  id: string;
  email: string;
  data?: Record<string, unknown>;
}

export interface ContactsResponse {
  contacts: Contact[];
  total: number;
}

interface UseContactsOptions {
  limit?: number;
  search?: string;
}

/**
 * Hook to fetch contacts with optional search
 */
export function useContacts(options: UseContactsOptions = {}) {
  const {limit = 50, search} = options;

  const params = new URLSearchParams();
  params.set('limit', limit.toString());
  if (search) {
    params.set('search', search);
  }

  const {data, error, mutate, isLoading} = useSWR<ContactsResponse>(
    `/contacts?${params.toString()}`,
    {
      revalidateOnFocus: false,
      dedupingInterval: 10000, // Prevent duplicate requests within 10 seconds
    },
  );

  return {
    contacts: data?.contacts || [],
    total: data?.total || 0,
    error,
    isLoading,
    mutate,
  };
}

/**
 * Hook to fetch available contact fields for variable usage
 */
export function useContactFields() {
  const {data, error, mutate, isLoading} = useSWR<{fields: string[]}>(
    '/contacts/fields',
    {
      revalidateOnFocus: false,
      // Cache fields for longer since they don't change often
      dedupingInterval: 60000, // 1 minute
    },
  );

  return {
    fields: data?.fields || [],
    error,
    isLoading,
    mutate,
  };
}