From fe685a65b1cf253c4d16d59844900cd88f912b13 Mon Sep 17 00:00:00 2001
From: bhnuka <01bhanukaekanayake@gmail.com>
Date: Sun, 3 Nov 2024 12:55:54 +0800
Subject: [PATCH] working judge0 api for code execution

---
 .../CollabServiceIntegratedView.tsx           | 109 +++++++++++++++---
 1 file changed, 96 insertions(+), 13 deletions(-)

diff --git a/peerprep/frontend/src/views/CollabServiceViews/CollabServiceIntegratedView.tsx b/peerprep/frontend/src/views/CollabServiceViews/CollabServiceIntegratedView.tsx
index 41de4eb3c1..8ba7c6d93a 100644
--- a/peerprep/frontend/src/views/CollabServiceViews/CollabServiceIntegratedView.tsx
+++ b/peerprep/frontend/src/views/CollabServiceViews/CollabServiceIntegratedView.tsx
@@ -4,18 +4,19 @@ import { useParams, useNavigate } from 'react-router-dom';
 import 'codemirror/lib/codemirror.css';
 import 'codemirror/theme/material.css';
 import 'codemirror/mode/javascript/javascript';
+import axios from 'axios';
 
 import * as Y from 'yjs';
 import { WebsocketProvider } from 'y-websocket';
-
-// @ts-check
 import { CodemirrorBinding } from 'y-codemirror';
 
 const CollaborationServiceIntegratedView: React.FC = () => {
   const { topic, difficulty, questionId, sessionId } = useParams<{ topic: string; difficulty: string; questionId: string; sessionId: string; }>();
-  const [code, setCode] = useState('// Start coding here...\n');
+  const [output, setOutput] = useState<string | null>(null);
+  const [language, setLanguage] = useState<number>(63); // Default to JavaScript (Node.js)
   const editorRef = useRef<any>(null);
   const navigate = useNavigate();
+  const [yText, setYText] = useState<Y.Text | null>(null);
 
   useEffect(() => {
     console.log(`Session ID: ${sessionId}, Topic: ${topic}, Difficulty: ${difficulty}`);
@@ -32,26 +33,86 @@ const CollaborationServiceIntegratedView: React.FC = () => {
   useEffect(() => {
     const ydoc = new Y.Doc();
     const provider = new WebsocketProvider('ws://localhost:1234/' + sessionId, 'collaborative-doc', ydoc);
-    const yText = ydoc.getText('codemirror');
+    const newYText = ydoc.getText('codemirror');
+    setYText(newYText);
 
     if (editorRef.current) {
-      const binding = new CodemirrorBinding(yText, editorRef.current.editor, provider.awareness);
+      const binding = new CodemirrorBinding(newYText, editorRef.current.editor, provider.awareness);
+
       return () => {
         binding.destroy();
         provider.destroy();
         ydoc.destroy();
       };
     }
-  }, []);
-
-  const handleBeforeCodeChange = (editor: any, data: any, value: string) => {
-    //setCode(value);
-  };
+  }, [sessionId]);
 
   const handleLeaveSession = () => {
     navigate('/matching');
   };
 
+  const handleRunCode = async () => {
+    try {
+      if (!yText) {
+        console.error('Error: Yjs text instance is not available');
+        setOutput('Error: Yjs text instance is not available');
+        return;
+      }
+  
+      const currentCode = yText.toString();
+      console.log('Submitting code for execution:', currentCode);
+  
+      // Base64 encode the source code if required by the API
+      const base64EncodedCode = btoa(currentCode); // `btoa()` encodes a string to base64
+  
+      // Make a POST request to Judge0 API for code execution
+      const response = await axios.post('https://judge0-ce.p.rapidapi.com/submissions?base64_encoded=true&wait=false&fields=*', {
+        language_id: language, // Ensure `language` is set correctly in your component
+        source_code: base64EncodedCode,
+        stdin: '', // Add input if necessary
+      }, {
+        headers: {
+          'Content-Type': 'application/json',
+          'x-rapidapi-host': 'judge0-ce.p.rapidapi.com',
+          'x-rapidapi-key': 'f5d59ce024msha6cd5fccde3d182p14459fjsn8a83590f92b4'
+        }
+      });
+  
+      console.log('Submission response:', response.data);
+  
+      // Polling for the result of the code execution
+      const token = response.data.token;
+      let result = null;
+  
+      while (!result || result.status.id <= 2) {
+        console.log(`Polling result for token: ${token}`);
+        const statusResponse = await axios.get(`https://judge0-ce.p.rapidapi.com/submissions/${token}?base64_encoded=true&fields=*`, {
+          headers: {
+            'x-rapidapi-host': 'judge0-ce.p.rapidapi.com',
+            'x-rapidapi-key': 'f5d59ce024msha6cd5fccde3d182p14459fjsn8a83590f92b4'
+          }
+        });
+  
+        result = statusResponse.data;
+  
+        // Decode the output if it's base64-encoded
+        const decodedOutput = result.stdout ? atob(result.stdout) : (result.stderr ? atob(result.stderr) : 'No output');
+        console.log('Polling response:', result);
+  
+        // Wait for a short duration before the next poll (e.g., 1 second)
+        await new Promise(resolve => setTimeout(resolve, 1000));
+  
+        // Set the output only when status is finished
+        if (result.status.id > 2) {
+          setOutput(decodedOutput);
+        }
+      }
+    } catch (error) {
+      console.error('Error executing code:', error);
+      setOutput('Error executing code');
+    }
+  };
+
   return (
     <div className="editor-container-parent">
       <div className="editor-header">
@@ -64,18 +125,40 @@ const CollaborationServiceIntegratedView: React.FC = () => {
       <div className="editor-container">
         <CodeMirror
           ref={editorRef}
-          value={code}
           options={{
             mode: 'javascript',
             lineNumbers: true,
             tabSize: 2,
             indentWithTabs: true
           }}
-          onBeforeChange={handleBeforeCodeChange}
+          onChange={() => {
+            // Let Yjs handle all updates; do not use setCode here
+          }}
         />
       </div>
+
+      <label htmlFor="language-select" style={{ marginTop: '20px' }}>Select Language:</label>
+      <select
+        id="language-select"
+        value={language}
+        onChange={(e) => setLanguage(parseInt(e.target.value))}
+        style={{ marginBottom: '20px' }}
+      >
+        <option value="63">JavaScript (Node.js)</option>
+        <option value="54">C++ (GCC 9.2.0)</option>
+        <option value="50">C (GCC 9.2.0)</option>
+        <option value="71">Python (3.8.1)</option>
+        <option value="62">Java (OpenJDK 13.0.1)</option>
+      </select>
+
+      <button onClick={handleRunCode} className="run-btn" style={{ marginBottom: '20px' }}>Run Code</button>
+      
+      <h3 style={{ textAlign: 'left', marginBottom: '5px' }}>Output</h3>
+      <div className="output-container" style={{ width: '900px', textAlign: 'left', border: '1px solid #ddd', padding: '10px', borderRadius: '5px', backgroundColor: '#f9f9f9' }}>
+        <pre style={{ whiteSpace: 'pre-wrap', wordWrap: 'break-word' }}>{output}</pre>
+      </div>
     </div>
   );
 };
 
-export default CollaborationServiceIntegratedView;
\ No newline at end of file
+export default CollaborationServiceIntegratedView;