setKey(e.target.value)} placeholder="Enter a unique key" className="input-field" /> {key && ( <>

<div className="status-indicator">
              {hasUnsavedChanges ? "Unsaved changes" : "All changes saved"}
            </div>
          </>
        )}
        <p className="source-link">
          <a href={import.meta.url.replace("esm.town", "val.town")} target="_top">View source</a>
        </p>
      </main>
    </div>
  );
}

function client() {
  createRoot(document.getElementById("root")).render(<App />);
}

if (typeof document !== "undefined") {
  client();
}

export default async function server(request: Request): Promise<Response> {
  const { blob } = await import("https://esm.town/v/std/blob");
  const url = new URL(request.url);

if (request.method === "GET" && url.pathname === "/content") {
    const key = url.searchParams.get("key");
    if (!key) {
      return new Response("Missing key", { status: 400 });
    }
    const data = await blob.getJSON(`textbox:${key}`);
    return new Response(JSON.stringify(data || { content: "", lastModified: null }), {
      headers: { "Content-Type": "application/json" },
    });
  }

if (request.method === "POST" && url.pathname === "/content") {
    const { key, content, lastModified } = await request.json();
    if (!key) {
      return new Response("Missing key", { status: 400 });
    }
    const existingData = await blob.getJSON(`textbox:${key}`);
    if (existingData && existingData.lastModified !== lastModified) {
      return new Response("Conflict", { status: 409 });
    }
    const newData = { content, lastModified: new Date().toISOString() };
    await blob.setJSON(`textbox:${key}`, newData);
    return new Response(JSON.stringify(newData), {
      headers: { "Content-Type": "application/json" },
    });
  }

return new Response(`
    <!DOCTYPE html>
    <html lang="en">
      <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>Collaborative Text Box</title>
        <style>${css}</style>
      </head>
      <body>
        <div id="root"></div>
        <script src="https://esm.town/v/std/catch"></script>
        <script type="module" src="${import.meta.url}"></script>
      </body>
    </html>
  `, {
    headers: { "Content-Type": "text/html" },
  });
}

const css = `
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;700&display=swap');

body {
  font-family: 'Roboto', Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f0f4f8;
  color: #333;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
}

header {
  background: linear-gradient(135deg, #6e8efb, #a777e3);
  padding: 20px;
  border-radius: 8px 8px 0 0;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

h1 {
  color: white;
  margin: 0;
  font-size: 24px;
  text-align: center;
}

main {
  background-color: white;
  padding: 20px;
  border-radius: 0 0 8px 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.input-field, .textarea-field {
  width: 100%;
  padding: 10px;
  margin-bottom: 15px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 16px;
  transition: border-color 0.3s ease;
}

.input-field:focus, .textarea-field:focus {
  outline: none;
  border-color: #6e8efb;
  box-shadow: 0 0 0 2px rgba(110, 142, 251, 0.1);
}

.textarea-field {
  height: 200px;
  resize: vertical;
}

.status-indicator {
  font-size: 14px;
  color: #666;
  margin-bottom: 15px;
}

.source-link {
  text-align: center;
  margin-top: 20px;
}

.source-link a {
  color: #6e8efb;
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s ease;
}

.source-link a:hover {
  color: #a777e3;
  text-decoration: underline;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.container {
  animation: fadeIn 0.5s ease-out;
}
`;
</article></body></html>

sharedTextBox