import { broadcastToUser } from "@/lib/realtime/bus";

type PayloadType = Awaited<ReturnType<typeof import("payload").getPayload>>;

export interface NotifyInput {
  userId: number;
  type?: string;
  title: string;
  message?: string;
  link?: string;
}

/** Create an in-app notification for a user. Fire-and-forget: failures are logged, not thrown. */
export async function notifyUser(payload: PayloadType, input: NotifyInput): Promise<void> {
  try {
    const target = await payload.findByID({
      collection: "users",
      id: input.userId,
      depth: 0,
      overrideAccess: true,
    });
    const prefs = (
      target as {
        preferences?: {
          notifications?: { mutedAll?: boolean | null; mutedTypes?: (string | null)[] | null };
        };
      }
    ).preferences?.notifications;
    if (prefs?.mutedAll) return;
    if (input.type && prefs?.mutedTypes?.includes(input.type)) return;

    await payload.create({
      collection: "user-notifications",
      data: {
        user: input.userId,
        type: input.type,
        title: input.title,
        message: input.message,
        link: input.link,
        read: false,
      },
      overrideAccess: true,
      depth: 0,
    });
    broadcastToUser("notification", input.userId, { type: input.type ?? null });
  } catch (err) {
    console.error("[Notifications] Failed to create notification:", err);
  }
}

/** Short display label for a notification type, or the raw type when unknown. */
export function notificationLabel(type?: string | null): string {
  switch (type) {
    case "market:offer":
      return "New offer";
    case "market:counter":
      return "Counteroffer";
    case "market:accept":
      return "Offer accepted";
    case "market:reject":
      return "Offer rejected";
    case "market:withdrawn":
      return "Offer withdrawn";
    case "market:closed":
      return "Negotiations closed";
    case "market:sold":
      return "Listing sold";
    case "market:expired":
      return "Listing expired";
    case "award:granted":
      return "Award received";
    case "account:discord-request":
      return "Discord request";
    case "finance:deposit":
      return "Bank deposit";
    case "finance:withdraw":
      return "Bank withdrawal";
    case "finance:transfer":
      return "Bank transfer";
    case "shipment:completed":
      return "Shipment completed";
    case "ticket:created":
      return "New ticket";
    case "ticket:assigned":
      return "Ticket assigned";
    case "ticket:reply":
      return "New reply";
    case "ticket:status":
      return "Ticket updated";
    default:
      return type ?? "Notification";
  }
}