import type { UserConfig } from 'unlighthouse'

export default async (): Promise<UserConfig> => {
  /* fetch sitemap from debug container */
  const sitemap = await (await fetch('http://website:8081/sitemap-0.xml')).text();
  /* format URLs to work with debug container */
  const urls = sitemap.match(/<loc>(.*?)<\/loc>/g)!.map(
    (loc) => loc.replace(/<\/?loc>/g, '').replace(/https:\/\/firq.dev/g, 'http://website:8081')
  ); 
  /* ensure serve is already "warm", preventing startup lag that reduces performance */
  for (const url of urls) { await fetch(url) };
  /* actual config */
  return {
    lighthouseOptions: {
      throttlingMethod: 'simulate',
      throttling: {
        rttMs: 150,
        throughputKbps: 1638.4,
        requestLatencyMs: 562.5, // estimated latency at 150ms RTT
        downloadThroughputKbps: 1474.56,
        uploadThroughputKbps: 675,
        cpuSlowdownMultiplier: 4
      },
      screenEmulation: {
        mobile: true,
        width: 360,
        height: 640,
        deviceScaleFactor: 2.625,
        disabled: false
      },
      skipAudits: [ 'is-on-https', 'redirects-http', 'uses-http2' ],
    },
    puppeteerOptions: {
      args: [ '--no-sandbox', '--disable-setuid-sandbox' ],
    },
    puppeteerClusterOptions: {
      maxConcurrency: 1
    },
    ci: {
      budget: 50,
      buildStatic: true,
    },
    scanner: {
      sitemap: false,
      dynamicSampling: false,
      samples: 1,
    },
    outputPath: 'unlighthouse-reports',
    cache: true,
    urls
  }
}