cloudlense/website-monitoring-frontend/scanner-worker/scan-worker.ts

import { createClient } from "@supabase/supabase-js";
import { launch } from "chrome-launcher";
import lighthouse from "lighthouse";
import dotenv from "dotenv";

dotenv.config();

const supabase = createClient(
  process.env.SUPABASE_URL!,
  process.env.SUPABASE_SERVICE_KEY!,
);

async function main() {
  // 1. Hole alle offenen Scans
  const { data: scans, error: scanError } = await supabase
    .from("scans")
    .select("id, page_id")
    .eq("status", "pending");

  if (scanError) {
    console.error("Fehler beim Laden der Scans:", scanError);
    process.exit(1);
  }

  for (const scan of scans ?? []) {
    try {
      // 2. Hole die URL der Seite
      const { data: page, error: pageError } = await supabase
        .from("pages")
        .select("url")
        .eq("id", scan.page_id)
        .single();

      if (pageError || !page) {
        console.error("Fehler beim Laden der Seite:", pageError);
        continue;
      }

      // 3. Setze Scan-Status auf "running"
      await supabase
        .from("scans")
        .update({ status: "running" })
        .eq("id", scan.id);

      // 4. Starte Lighthouse
      const chrome = await launch({
        chromeFlags: ["--headless", "--no-sandbox", "--disable-dev-shm-usage"],
      });

      const runnerResult = await lighthouse(page.url, {
        port: chrome.port,
        output: "json",
        logLevel: "info",
        onlyCategories: [
          "performance",
          "seo",
          "accessibility",
          "best-practices",
        ],
      });

      await chrome.kill();

      if (!runnerResult) throw new Error("Lighthouse returned no result");

      // 5. Speichere Ergebnisse
      await supabase.from("scan_results").insert([
        {
          scan_id: scan.id,
          raw_data: runnerResult.lhr,
        },
      ]);

      // 6. Setze Scan-Status auf "completed"
      await supabase
        .from("scans")
        .update({ status: "completed" })
        .eq("id", scan.id);

      console.log(`Scan für ${page.url} abgeschlossen.`);
    } catch (error) {
      console.error("Scan-Fehler:", error);
      await supabase
        .from("scans")
        .update({
          status: "failed",
          error_message: error instanceof Error ? error.message : String(error),
        })
        .eq("id", scan.id);
    }
  }
}

main();