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📝 Grammar Checker

setText(e.target.value)}\n        placeholder=\"Enter your text here...\"\n        rows={6}\n      />\n      <button \n        style={styles.button} \n        onClick={checkGrammar}\n        disabled={loading}\n      >\n        {loading ? 'Checking...' : 'Check Grammar'}\n      </button>\n      \n      {correction && (\n        <div style={styles.resultContainer}>\n          <h2>Results:</h2>\n          {correction.error ? (\n            <p style={styles.error}>{correction.error}</p>\n          ) : (\n            <>\n              <div style={styles.correctedText}>\n                <strong>Corrected Text:</strong> {correction.correctedText}\n              </div>\n              <div style={styles.explanation}>\n                <strong>Explanation:</strong> {correction.explanation}\n              </div>\n            </>\n          )}\n        </div>\n      )}\n      <a \n        href={import.meta.url.replace(\"esm.town\", \"val.town\")} \n        target=\"_top\" \n        style={styles.sourceLink}\n      >\n        View Source\n      </a>\n    </div>\n  );\n}\n\nconst styles = {\n  container: {\n    maxWidth: '600px',\n    margin: '0 auto',\n    padding: '20px',\n    fontFamily: 'Arial, sans-serif',\n  },\n  title: {\n    textAlign: 'center',\n    color: '#333',\n  },\n  textarea: {\n    width: '100%',\n    padding: '10px',\n    marginBottom: '10px',\n    borderRadius: '5px',\n    border: '1px solid #ccc',\n  },\n  button: {\n    width: '100%',\n    padding: '10px',\n    backgroundColor: '#4CAF50',\n    color: 'white',\n    border: 'none',\n    borderRadius: '5px',\n    cursor: 'pointer',\n  },\n  resultContainer: {\n    marginTop: '20px',\n    padding: '15px',\n    backgroundColor: '#f4f4f4',\n    borderRadius: '5px',\n  },\n  correctedText: {\n    marginBottom: '10px',\n  },\n  explanation: {\n    fontStyle: 'italic',\n  },\n  error: {\n    color: 'red',\n  },\n  sourceLink: {\n    display: 'block',\n    textAlign: 'center',\n    marginTop: '20px',\n    color: '#666',\n    textDecoration: 'none',\n  }\n};\n\nfunction client() {\n  createRoot(document.getElementById(\"root\")).render(<App />);\n}\nif (typeof document !== \"undefined\") { client(); }\n\nexport default async function server(request: Request): Promise<Response> {\n  if (request.method === 'POST') {\n    const { OpenAI } = await import(\"https://esm.town/v/std/openai\");\n    const openai = new OpenAI();\n\n    try {\n      const { text } = await request.json();\n      \n      const completion = await openai.chat.completions.create({\n        messages: [\n          { \n            role: \"system\", \n            content: \"You are a professional grammar checker. Provide a corrected version of the text and a detailed explanation of the grammar improvements.\" \n          },\n          { \n            role: \"user\", \n            content: `Please check the grammar in this text and provide corrections and explanations:\\n\\n${text}` \n          }\n        ],\n        model: \"gpt-4o-mini\",\n        max_tokens: 300,\n      });\n\n      const response = completion.choices[0].message.content;\n      const [correctedText, explanation] = response.split('Explanation:');\n\n      return new Response(JSON.stringify({\n        correctedText: correctedText.replace('Corrected Text:', '').trim(),\n        explanation: explanation ? explanation.trim() : 'No specific grammar issues found.'\n      }), {\n        headers: { 'Content-Type': 'application/json' }\n      });\n    } catch (error) {\n      return new Response(JSON.stringify({ error: error.message }), {\n        status: 500,\n        headers: { 'Content-Type': 'application/json' }\n      });\n    }\n  }\n\n  return new Response(`\n    <html>\n      <head>\n        <title>Grammar Checker</title>\n        <meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">\n      </head>\n      <body>\n        <div id=\"root\"></div>\n        <script src=\"https://esm.town/v/std/catch\"></script>\n        <script type=\"module\" src=\"${import.meta.url}\"></script>\n      </body>\n    </html>\n  `, {\n    headers: { 'Content-Type': 'text/html' }\n  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Code