// download-flags.ts — Lädt circle-flags SVGs für alle Teams aus TLA_TO_ISO2.
// Ausführung: npx tsx scripts/download-flags.ts

import { TLA_TO_ISO2 } from "../lib/flags";
import * as fs from "fs";
import * as path from "path";

const BASE = "https://hatscripts.github.io/circle-flags/flags";
const OUT = path.join(__dirname, "..", "public", "flags");

async function main() {
  const codes = Object.values(TLA_TO_ISO2);
  const unique = [...new Set(codes)];
  console.log(`Lade ${unique.length} Flaggen (${codes.length} Team-Codes)...`);

  if (!fs.existsSync(OUT)) fs.mkdirSync(OUT, { recursive: true });

  let ok = 0;
  let failed = 0;
  for (const iso2 of unique) {
    const url = `${BASE}/${iso2}.svg`;
    try {
      const res = await fetch(url, {
        headers: { "User-Agent": "circle-flags-download/1.0" },
      });
      if (!res.ok) {
        console.warn(`  ❌ ${iso2}: HTTP ${res.status}`);
        failed++;
        continue;
      }
      const svg = await res.text();
      // Prüfen: keine leere/Fehler-SVG (<10 Bytes = kaputt)
      if (svg.trim().length < 10) {
        console.warn(`  ❌ ${iso2}: leere SVG (${svg.length} Bytes)`);
        failed++;
        continue;
      }
      fs.writeFileSync(path.join(OUT, `${iso2}.svg`), svg);
      ok++;
    } catch (err) {
      console.warn(`  ❌ ${iso2}: ${err instanceof Error ? err.message : err}`);
      failed++;
    }
  }

  console.log(`\n✅ ${ok} OK, ❌ ${failed} fehlgeschlagen`);
  if (failed > 0) process.exit(1);
}

main();