"use client";

// App-wide in-app notifications. Uses the shared dashboard socket to watch activity across ALL of
// the user's threads (via the adapter's subscribeActivity) and shows a clickable toast when a new
// message arrives — unless you're already on the Messenger tab (you'd see it live there). Clicking
// deep-links to the conversation. Renders nothing.

import { useEffect, useMemo, useRef } from "react";
import { useAppShell, useAuth } from "@abe-kap/appshell-sdk/react";
import type { MessagingAdapter } from "@insignia/iios-messaging-ui";
import { isShellConfigured } from "@/lib/appshell";
import { useRealtime } from "@/lib/realtime";
import { CrmMessagingAdapter, type DataDoor } from "@/lib/crm-messaging-adapter";
import { useToast } from "./ui";

const SHELL = isShellConfigured();

export function NotificationCenter({ active, onNavigate }: { active: string; onNavigate: (surface: "messenger" | "inbox", threadId: string) => void }) {
  const socket = useRealtime();
  const { sdk } = useAppShell();
  const { user } = useAuth();
  const toast = useToast();
  const me = user?.id;

  // Keep the current tab readable inside the (stable) subscription callback.
  const activeRef = useRef(active);
  activeRef.current = active;

  const adapter = useMemo<MessagingAdapter | null>(
    () => (me && socket ? new CrmMessagingAdapter(sdk as unknown as DataDoor, me, socket) : null),
    [sdk, me, socket],
  );

  useEffect(() => {
    if (!SHELL || !adapter?.subscribeActivity) return;
    return adapter.subscribeActivity(({ threadId, message }) => {
      if (message.actorId === me) return; // never notify me about my own message
      if (activeRef.current === "messenger") return; // already watching chat live
      toast.push({
        tone: "info",
        title: "New message",
        desc: message.text?.slice(0, 90) || "You have a new message",
        onClick: () => onNavigate("messenger", threadId),
      });
    });
  }, [adapter, me, toast, onNavigate]);

  return null;
}