/* eslint-disable no-await-in-loop */
import Consola from 'consola';
import { getCookie } from 'cookies-next';
import { NextApiRequest, NextApiResponse } from 'next';
import { findAppProperty } from '../../../../tools/client/app-properties';
import { getConfig } from '../../../../tools/config/getConfig';
import { PiHoleClient } from '../../../../tools/server/sdk/pihole/piHole';
import { AdStatistics } from '../../../../widgets/dnshole/type';
import { AdGuard } from '../../../../tools/server/sdk/adGuard/adGuard';

export const Get = async (request: NextApiRequest, response: NextApiResponse) => {
  const configName = getCookie('config-name', { req: request });
  const config = getConfig(configName?.toString() ?? 'default');

  const applicableApps = config.apps.filter(
    (x) => x.integration?.type && ['pihole', 'adGuardHome'].includes(x.integration?.type)
  );

  const data: AdStatistics = {
    domainsBeingBlocked: 0,
    adsBlockedToday: 0,
    adsBlockedTodayPercentage: 0,
    dnsQueriesToday: 0,
    status: [],
  };

  const adsBlockedTodayPercentageArr: number[] = [];

  for (let i = 0; i < applicableApps.length; i += 1) {
    const app = applicableApps[i];

    try {
      switch (app.integration?.type) {
        case 'pihole': {
          const piHole = new PiHoleClient(app.url, findAppProperty(app, 'apiKey'));
          const summary = await piHole.getSummary();

          data.domainsBeingBlocked += summary.domains_being_blocked;
          data.adsBlockedToday += summary.ads_blocked_today;
          data.dnsQueriesToday += summary.dns_queries_today;
          data.status.push({
            status: summary.status,
            appId: app.id,
          });
          adsBlockedTodayPercentageArr.push(summary.ads_percentage_today);
          break;
        }
        case 'adGuardHome': {
          const adGuard = new AdGuard(
            app.url,
            findAppProperty(app, 'username'),
            findAppProperty(app, 'password')
          );

          const stats = await adGuard.getStats();
          const status = await adGuard.getStatus();
          const countFilteredDomains = await adGuard.getCountFilteringDomains();

          const blockedQueriesToday = stats.blocked_filtering.reduce((prev, sum) => prev + sum, 0);
          const queriesToday = stats.dns_queries.reduce((prev, sum) => prev + sum, 0);
          data.adsBlockedToday = blockedQueriesToday;
          data.domainsBeingBlocked += countFilteredDomains;
          data.dnsQueriesToday += queriesToday;
          data.status.push({
            status: status.protection_enabled ? 'enabled' : 'disabled',
            appId: app.id,
          });
          adsBlockedTodayPercentageArr.push((queriesToday / blockedQueriesToday) * 100);
          break;
        }
        default: {
          Consola.error(`Integration communication for app ${app.id} failed: unknown type`);
          break;
        }
      }
    } catch (err) {
      Consola.error(`Failed to communicate with DNS hole at ${app.url}: ${err}`);
    }
  }

  data.adsBlockedTodayPercentage = data.adsBlockedToday / data.dnsQueriesToday;
  if (Number.isNaN(data.adsBlockedTodayPercentage)) {
    data.adsBlockedTodayPercentage = 0;
  }
  return response.status(200).json(data);
};

export default async (request: NextApiRequest, response: NextApiResponse) => {
  if (request.method === 'GET') {
    return Get(request, response);
  }

  return response.status(405);
};