import fetch from 'node-fetch';
import logger from '../utils/logger.js';
import { saveJson } from '../utils/file.js';
import config from '../config/index.js';
import { getAccessToken } from './token.js';

const BASE_URL = "https://api.wxcc-us1.cisco.com";

async function fetchAllPages(endpoint) {
  const accessToken = getAccessToken();
  if (!accessToken) {
    throw new Error("No valid Webex access token found");
  }

  const url = new URL(`${BASE_URL}${endpoint}`);
  const allItems = [];
  let page = 0;
  const pageSize = 50;

  while (true) {
    url.searchParams.set('page', page);
    url.searchParams.set('pageSize', pageSize);

    const res = await fetch(url, {
      headers: { Authorization: `Bearer ${accessToken}` }
    });

    if (!res.ok) throw new Error(`API ${res.status}: ${await res.text()}`);

    const items = await res.json();
    allItems.push(...items);

    if (items.length < pageSize) break;
    page++;
  }

  return allItems;
}

export async function updateWxCCData() {
  try {
    const [agents, auxCodes, contactQueues, teams] = await Promise.all([
      fetchAllPages(`/organization/${config.auth.webex.orgId}/user`),
      fetchAllPages(`/organization/${config.auth.webex.orgId}/auxiliary-code`),
      fetchAllPages(`/organization/${config.auth.webex.orgId}/contact-service-queue`),
      fetchAllPages(`/organization/${config.auth.webex.orgId}/team`)
    ]);

    await Promise.all([
      saveJson(agents, './data/agents.json'),
      saveJson(auxCodes, './data/auxCodes.json'),
      saveJson(contactQueues, './data/contactQueues.json'),
      saveJson(teams, './data/teams.json')
    ]);

    logger.info(`WxCC data updated: ${agents.length} agents, ${auxCodes.length} aux codes`);
    return { agents, auxCodes, contactQueues, teams };
  } catch (error) {
    logger.error('updateWxCCData failed', { error: error.message });
    throw error;
  }
}