import { toast } from "sonner";
import { ApiClientError } from "@/lib/api/client";

export type NotifyOptions = {
  description?: string;
  duration?: number;
  /** Optional click-through button (e.g. "View" → navigate to the related page). */
  action?: { label: string; onClick: () => void };
};

function baseOptions(opts?: NotifyOptions) {
  return {
    description: opts?.description,
    duration: opts?.duration ?? 4000,
    action: opts?.action
      ? { label: opts.action.label, onClick: opts.action.onClick }
      : undefined,
  };
}

/** Toast notifications — use for transient success/error/info across the app */
export const notify = {
  success(message: string, opts?: NotifyOptions) {
    toast.success(message, baseOptions(opts));
  },
  error(message: string, opts?: NotifyOptions) {
    toast.error(message, { ...baseOptions(opts), duration: opts?.duration ?? 5500 });
  },
  warning(message: string, opts?: NotifyOptions) {
    toast.warning(message, baseOptions(opts));
  },
  info(message: string, opts?: NotifyOptions) {
    toast.info(message, baseOptions(opts));
  },
  loading(message: string) {
    return toast.loading(message);
  },
  dismiss(id?: string | number) {
    toast.dismiss(id);
  },
  promise<T>(
    promise: Promise<T>,
    messages: { loading: string; success: string; error?: string }
  ) {
    return toast.promise(promise, {
      loading: messages.loading,
      success: messages.success,
      error: messages.error ?? messages.loading,
    });
  },
};

export function getErrorMessage(err: unknown, fallback: string): string {
  // ApiClientError.message is the raw (usually English) backend message; prefer
  // the caller's localized fallback. For code-specific localized text, use the
  // useApiError() hook instead of this helper.
  if (err instanceof ApiClientError) return fallback;
  if (err instanceof Error && err.message) return err.message;
  return fallback;
}

export function notifyError(err: unknown, fallback: string) {
  notify.error(getErrorMessage(err, fallback));
}