import { apiRequestData } from "./http";

export type NotificationItem = {
  id: string;
  type: string;
  title: string;
  body: string | null;
  targetType: string | null;
  targetId: string | null;
  readAt: string | null;
  createdAt: string;
};

export type NotificationListResponse = {
  page: number;
  pageSize: number;
  total: number;
  unreadOnly: boolean;
  unreadCount: number;
  items: NotificationItem[];
};

export type NotificationListQuery = {
  page?: number;
  pageSize?: number;
  unreadOnly?: boolean;
  type?: string;
};

function toQueryString(query: NotificationListQuery) {
  const params = new URLSearchParams();
  if (query.page != null) params.set("page", String(query.page));
  if (query.pageSize != null) params.set("pageSize", String(query.pageSize));
  if (query.unreadOnly != null) params.set("unreadOnly", query.unreadOnly ? "1" : "0");
  if (query.type) params.set("type", query.type);
  const qs = params.toString();
  return qs ? `?${qs}` : "";
}

export async function fetchNotifications(query: NotificationListQuery = {}) {
  return apiRequestData<NotificationListResponse>(`/api/notifications${toQueryString(query)}`);
}

export async function markNotificationRead(notificationId: string) {
  return apiRequestData<{ id: string; readAt: string | null }>(
    `/api/notifications/${notificationId}/mark-read`,
    {
      method: "POST",
      body: JSON.stringify({}),
    },
  );
}

export async function markAllNotificationsRead() {
  return apiRequestData<{ updatedCount: number }>("/api/notifications/mark-all-read", {
    method: "POST",
    body: JSON.stringify({}),
  });
}