import { readdir } from "node:fs/promises";
import { join } from "node:path";

const FILES_DIR = "./files";

Bun.serve({
  port: 3006,
  async fetch(req) {
    const url = new URL(req.url);

    // Kui küsitakse juurkausta, näita failide loetelu
    if (url.pathname === "/") {
      try {
        const files = await readdir(FILES_DIR);

        let html = `
          <!DOCTYPE html>
          <html>
          <head>
            <meta charset="UTF-8">
            <title>Failiserver</title>
            <style>
              body { font-family: Arial, sans-serif; max-width: 800px; margin: 50px auto; padding: 20px; }
              h1 { color: #333; }
              ul { list-style: none; padding: 0; }
              li { padding: 10px; border-bottom: 1px solid #eee; }
              a { color: #0066cc; text-decoration: none; font-size: 18px; }
              a:hover { text-decoration: underline; }
            </style>
          </head>
          <body>
            <h1>📁 Failid</h1>
            <ul>
        `;

        if (files.length === 0) {
          html += "<li>Kausta ei ole ühtegi faili</li>";
        } else {
          for (const file of files) {
            html += `<li>📄 <a href="/download/${encodeURIComponent(file)}">${file}</a></li>`;
          }
        }

        html += `
            </ul>
          </body>
          </html>
        `;

        return new Response(html, {
          headers: { "Content-Type": "text/html; charset=utf-8" }
        });
      } catch (error) {
        return new Response("Viga failide lugemisel", { status: 500 });
      }
    }

    // Kui küsitakse faili allalaadimist
    if (url.pathname.startsWith("/download/")) {
      const filename = decodeURIComponent(url.pathname.slice(10));
      const filepath = join(FILES_DIR, filename);

      try {
        const file = Bun.file(filepath);
        const exists = await file.exists();

        if (!exists) {
          return new Response("Faili ei leitud", { status: 404 });
        }

        return new Response(file, {
          headers: {
            "Content-Disposition": `attachment; filename="${filename}"`,
          }
        });
      } catch (error) {
        return new Response("Viga faili lugemisel", { status: 500 });
      }
    }

    return new Response("Lehte ei leitud", { status: 404 });
  },
});

console.log("Failiserver töötab aadressil http://localhost:3006");