import { supabase } from "@/integrations/supabase/client";
import type { Database } from "@/integrations/supabase/types";

export type NotificationKind = Database["public"]["Enums"]["notification_kind"];

export interface CreateNotificationInput {
  user_id: string;
  kind: NotificationKind;
  title: string;
  body?: string | null;
  link?: string | null;
  task_id?: string | null;
  case_id?: string | null;
  conversation_id?: string | null;
  created_by?: string | null;
}

export async function createNotifications(rows: CreateNotificationInput[]) {
  if (!rows.length) return;
  await supabase.from("notifications").insert(rows);
}

const MENTION_RE = /@\[([^\]]+)\]\(user:([0-9a-f-]{36})\)/g;

export function extractMentions(body: string): string[] {
  const ids = new Set<string>();
  let m: RegExpExecArray | null;
  while ((m = MENTION_RE.exec(body)) !== null) {
    ids.add(m[2]);
  }
  return Array.from(ids);
}

export function renderMentionsToText(body: string): string {
  return body.replace(MENTION_RE, "@$1");
}