import { apiWrapper, boolApiWrapper } from './index';

/** A raw admin user row as returned by the API (positional from SQL columns) */
export type AdminUserRow = [
  name: string,
  isAdmin: boolean,
];

/**
 * Fetch all users (admin only).
 *
 * @param token - The auth token (must belong to an admin user)
 * @returns An array of {@link AdminUserRow} on success, or `undefined` on failure
 */
export async function get(token: string): Promise<AdminUserRow[] | undefined> {
  return apiWrapper<AdminUserRow[]>('/api/admin/get', { token });
}

/**
 * Create a new user (admin only).
 *
 * @param token - The auth token (must belong to an admin user)
 * @param username - The new username
 * @returns A single {@link AdminUserRow} of the newly created user on success, or `undefined` on failure
 */
export async function add(token: string, username: string): Promise<AdminUserRow | undefined> {
  return apiWrapper<AdminUserRow>('/api/admin/add', { token, username });
}

/**
 * Update an existing user's password and/or admin status (admin only).
 *
 * @param token - The auth token (must belong to an admin user)
 * @param username - The target user's username
 * @param password - (optional) The new password (plaintext, will be hashed server-side)
 * @param isAdmin - (optional) Whether the user should be an admin
 * @returns `true` on success, `false` on failure (or if no changes were provided)
 */
export async function update(
  token: string,
  username: string,
  password?: string,
  isAdmin?: boolean,
): Promise<boolean> {
  const data: Record<string, any> = { token, username };
  if (password !== undefined) data.password = password;
  if (isAdmin !== undefined) data.isAdmin = isAdmin;

  if (Object.keys(data).length <= 2) return false;

  return boolApiWrapper('/api/admin/update', data);
}

/**
 * Delete a user (admin only).
 *
 * @param token - The auth token (must belong to an admin user)
 * @param username - The username to delete
 * @returns `true` on success, `false` on failure
 */
export async function del(token: string, username: string): Promise<boolean> {
  return boolApiWrapper('/api/admin/delete', { token, username });
}