feat: Add POC command page structure and routing

- Created CommandPocPage.tsx with basic layout structure - Added POC-specific TypeScript interfaces and types - Implemented basic UI components: PocHeader, PocMessageList, PocMessageBubble, PocCommandInput, PocStatusBar - Added /command-poc route to Router.tsx - Set up component folder structure following PRD specifications 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
2025-07-30 16:19:00 +08:00
parent 6d0867c27d
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+# Python CLI Web Interface POC
+
+A proof-of-concept web interface for running Python CLI applications with real-time input/output interaction.
+
+## Features
+
+- **Web-based Terminal**: Chat-like interface for running Python commands
+- **Real-time I/O**: Bidirectional communication with Python processes
+- **Interactive Input**: Support for Python scripts that require user input
+- **Process Management**: Start, monitor, and kill Python processes
+- **WebSocket Communication**: Low-latency real-time updates
+
+## Quick Start
+
+1. **Install dependencies**:
+   ```bash
+   npm install
+   ```
+
+2. **Start the server**:
+   ```bash
+   npm start
+   ```
+
+3. **Open your browser**:
+   - Navigate to `http://localhost:3000`
+   - The interface will load automatically
+
+## Usage Examples
+
+### Basic Python Commands
+```bash
+python --version
+python -c "print('Hello World')"
+```
+
+### Interactive Scripts
+```bash
+python test-script.py
+python simple-calc.py
+```
+
+### Test Scripts Included
+
+- **`test-script.py`**: Demonstrates user input, output streaming, and interactive features
+- **`simple-calc.py`**: Simple calculator that takes mathematical expressions
+
+## How It Works
+
+1. **Frontend**: HTML/CSS/JS interface that looks like a terminal/chat
+2. **WebSocket**: Real-time bidirectional communication
+3. **Node.js Backend**: Spawns Python processes and manages I/O
+4. **Process Management**: Each command runs in its own Python process
+
+## Architecture
+
+```
+┌─────────────────┐    WebSocket    ┌──────────────────┐    spawn()    ┌─────────────┐
+│   Web Browser   │ ◄─────────────► │   Node.js Server │ ◄──────────► │   Python    │
+│   (Frontend)    │                 │   (Backend)      │               │   Process   │
+└─────────────────┘                 └──────────────────┘               └─────────────┘
+```
+
+## Key Files
+
+- `server.js` - Node.js server with WebSocket support
+- `public/index.html` - Web interface
+- `public/script.js` - Frontend JavaScript logic
+- `public/style.css` - Interface styling
+- `test-script.py` - Sample interactive Python script
+
+## Development
+
+The POC supports:
+- ✅ Running Python commands
+- ✅ Real-time output streaming  
+- ✅ Interactive input handling
+- ✅ Process termination
+- ✅ Error handling
+- ✅ Connection status monitoring
+- ✅ Auto-reconnection
+
+## Limitations
+
+This is a POC with basic security. For production use, consider:
+- Input sanitization
+- Process sandboxing  
+- Authentication/authorization
+- Resource limits
+- Proper error handling
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+      "integrity": "sha512-PEIGCY5tSlUt50cqyMXfCzX+oOPqN0vuGqWzbcJ2xvnkzkq46oOpz7dQaTDBdfICb4N14+GARUDw2XV2N4tvzg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=10.0.0"
+      },
+      "peerDependencies": {
+        "bufferutil": "^4.0.1",
+        "utf-8-validate": ">=5.0.2"
+      },
+      "peerDependenciesMeta": {
+        "bufferutil": {
+          "optional": true
+        },
+        "utf-8-validate": {
+          "optional": true
+        }
+      }
+    }
+  }
+}
@@ -0,0 +1,17 @@
+{
+  "name": "python-cli-web-poc",
+  "version": "1.0.0",
+  "description": "POC for running Python CLI apps through web interface",
+  "main": "server.js",
+  "scripts": {
+    "start": "node server.js",
+    "dev": "node server.js"
+  },
+  "dependencies": {
+    "express": "^4.18.2",
+    "ws": "^8.14.2"
+  },
+  "engines": {
+    "node": ">=14.0.0"
+  }
+}
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Python CLI Web Interface</title>
+    <link rel="stylesheet" href="style.css">
+</head>
+<body>
+    <div class="container">
+        <header>
+            <h1>Python CLI Web Interface</h1>
+            <div class="status">
+                <span id="status-indicator" class="status-disconnected">●</span>
+                <span id="status-text">Disconnected</span>
+            </div>
+        </header>
+
+        <div class="chat-container">
+            <div id="output" class="output-area"></div>
+            
+            <div class="input-area">
+                <div class="command-input-container">
+                    <input type="text" id="command-input" placeholder="Enter Python command (e.g., python script.py)" autocomplete="off">
+                    <button id="run-btn">Run</button>
+                    <button id="kill-btn" disabled>Kill</button>
+                </div>
+                
+                <div class="user-input-container" id="user-input-container" style="display: none;">
+                    <input type="text" id="user-input" placeholder="Enter input for Python script..." autocomplete="off">
+                    <button id="send-btn">Send</button>
+                </div>
+            </div>
+        </div>
+    </div>
+
+    <script src="script.js"></script>
+</body>
+</html>
@@ -0,0 +1,221 @@
+class PythonWebInterface {
+  constructor() {
+    this.ws = null
+    this.currentSessionId = null
+    this.isConnected = false
+    this.isRunning = false
+
+    this.initializeElements()
+    this.setupEventListeners()
+    this.connect()
+  }
+
+  initializeElements() {
+    this.statusIndicator = document.getElementById('status-indicator')
+    this.statusText = document.getElementById('status-text')
+    this.output = document.getElementById('output')
+    this.commandInput = document.getElementById('command-input')
+    this.userInput = document.getElementById('user-input')
+    this.userInputContainer = document.getElementById('user-input-container')
+    this.runBtn = document.getElementById('run-btn')
+    this.killBtn = document.getElementById('kill-btn')
+    this.sendBtn = document.getElementById('send-btn')
+  }
+
+  setupEventListeners() {
+    this.runBtn.addEventListener('click', () => this.runCommand())
+    this.killBtn.addEventListener('click', () => this.killSession())
+    this.sendBtn.addEventListener('click', () => this.sendInput())
+
+    this.commandInput.addEventListener('keypress', (e) => {
+      if (e.key === 'Enter' && !this.isRunning) {
+        this.runCommand()
+      }
+    })
+
+    this.userInput.addEventListener('keypress', (e) => {
+      if (e.key === 'Enter') {
+        this.sendInput()
+      }
+    })
+  }
+
+  connect() {
+    const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:'
+    const wsUrl = `${protocol}//${window.location.host}`
+
+    this.ws = new WebSocket(wsUrl)
+
+    this.ws.onopen = () => {
+      this.isConnected = true
+      this.updateStatus('Connected', true)
+      this.addSystemMessage('Connected to server')
+    }
+
+    this.ws.onclose = () => {
+      this.isConnected = false
+      this.updateStatus('Disconnected', false)
+      this.addSystemMessage('Disconnected from server. Attempting to reconnect...')
+
+      // Attempt to reconnect after 3 seconds
+      setTimeout(() => {
+        if (!this.isConnected) {
+          this.connect()
+        }
+      }, 3000)
+    }
+
+    this.ws.onerror = (error) => {
+      this.addErrorMessage('WebSocket error occurred')
+    }
+
+    this.ws.onmessage = (event) => {
+      this.handleMessage(JSON.parse(event.data))
+    }
+  }
+
+  handleMessage(data) {
+    switch (data.type) {
+      case 'command_started':
+        this.isRunning = true
+        this.currentSessionId = data.sessionId
+        this.updateUIState()
+        this.showUserInput()
+        this.addSystemMessage(`Started: ${data.command}`)
+        break
+
+      case 'output':
+        this.addOutput(data.data, data.stream === 'stderr')
+        break
+
+      case 'command_finished':
+        this.isRunning = false
+        this.currentSessionId = null
+        this.updateUIState()
+        this.hideUserInput()
+        this.addSystemMessage(`Process finished with exit code: ${data.exitCode}`)
+        break
+
+      case 'error':
+        this.addErrorMessage(data.message)
+        this.isRunning = false
+        this.currentSessionId = null
+        this.updateUIState()
+        this.hideUserInput()
+        break
+    }
+  }
+
+  runCommand() {
+    const command = this.commandInput.value.trim()
+    if (!command || !this.isConnected || this.isRunning) return
+
+    this.addCommandMessage(command)
+
+    const sessionId = 'session_' + Date.now()
+    this.ws.send(
+      JSON.stringify({
+        type: 'run_command',
+        command: command,
+        sessionId: sessionId
+      })
+    )
+
+    this.commandInput.value = ''
+  }
+
+  sendInput() {
+    const input = this.userInput.value
+    if (!input || !this.currentSessionId) return
+
+    this.addInputMessage(input)
+
+    this.ws.send(
+      JSON.stringify({
+        type: 'send_input',
+        input: input,
+        sessionId: this.currentSessionId
+      })
+    )
+
+    this.userInput.value = ''
+  }
+
+  killSession() {
+    if (this.currentSessionId) {
+      this.ws.send(
+        JSON.stringify({
+          type: 'kill_session',
+          sessionId: this.currentSessionId
+        })
+      )
+    }
+  }
+
+  updateStatus(text, connected) {
+    this.statusText.textContent = text
+    this.statusIndicator.className = connected ? 'status-connected' : 'status-disconnected'
+  }
+
+  updateUIState() {
+    this.runBtn.disabled = !this.isConnected || this.isRunning
+    this.killBtn.disabled = !this.isRunning
+    this.commandInput.disabled = !this.isConnected || this.isRunning
+  }
+
+  showUserInput() {
+    this.userInputContainer.style.display = 'flex'
+    this.userInput.focus()
+  }
+
+  hideUserInput() {
+    this.userInputContainer.style.display = 'none'
+  }
+
+  addMessage(content, className) {
+    const messageDiv = document.createElement('div')
+    messageDiv.className = `message ${className}`
+
+    const timestamp = document.createElement('div')
+    timestamp.className = 'timestamp'
+    timestamp.textContent = new Date().toLocaleTimeString()
+
+    const contentDiv = document.createElement('pre')
+    contentDiv.textContent = content
+
+    messageDiv.appendChild(timestamp)
+    messageDiv.appendChild(contentDiv)
+
+    this.output.appendChild(messageDiv)
+    this.scrollToBottom()
+  }
+
+  addCommandMessage(command) {
+    this.addMessage(`$ ${command}`, 'command')
+  }
+
+  addInputMessage(input) {
+    this.addMessage(`> ${input}`, 'command')
+  }
+
+  addOutput(data, isError = false) {
+    this.addMessage(data, isError ? 'error' : 'output')
+  }
+
+  addSystemMessage(message) {
+    this.addMessage(message, 'system')
+  }
+
+  addErrorMessage(message) {
+    this.addMessage(`Error: ${message}`, 'error')
+  }
+
+  scrollToBottom() {
+    this.output.scrollTop = this.output.scrollHeight
+  }
+}
+
+// Initialize the interface when the page loads
+document.addEventListener('DOMContentLoaded', () => {
+  new PythonWebInterface()
+})
@@ -0,0 +1,207 @@
+* {
+    margin: 0;
+    padding: 0;
+    box-sizing: border-box;
+}
+
+body {
+    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
+    background-color: #1e1e1e;
+    color: #ffffff;
+    height: 100vh;
+    overflow: hidden;
+}
+
+.container {
+    display: flex;
+    flex-direction: column;
+    height: 100vh;
+}
+
+header {
+    background-color: #2d2d2d;
+    padding: 1rem 2rem;
+    border-bottom: 1px solid #404040;
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+}
+
+header h1 {
+    font-size: 1.5rem;
+    font-weight: 600;
+}
+
+.status {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+}
+
+.status-connected {
+    color: #4caf50;
+}
+
+.status-disconnected {
+    color: #f44336;
+}
+
+.chat-container {
+    flex: 1;
+    display: flex;
+    flex-direction: column;
+    overflow: hidden;
+}
+
+.output-area {
+    flex: 1;
+    padding: 1rem 2rem;
+    overflow-y: auto;
+    background-color: #1e1e1e;
+    font-family: 'Courier New', monospace;
+    font-size: 14px;
+    line-height: 1.4;
+}
+
+.message {
+    margin-bottom: 1rem;
+    padding: 0.75rem 1rem;
+    border-radius: 8px;
+    max-width: 100%;
+    word-wrap: break-word;
+}
+
+.message.command {
+    background-color: #0d7377;
+    color: white;
+    margin-left: auto;
+    margin-right: 0;
+    text-align: right;
+}
+
+.message.output {
+    background-color: #2d2d2d;
+    border-left: 4px solid #4caf50;
+}
+
+.message.error {
+    background-color: #2d2d2d;
+    border-left: 4px solid #f44336;
+}
+
+.message.system {
+    background-color: #2d2d2d;
+    border-left: 4px solid #ff9800;
+    font-style: italic;
+}
+
+.message pre {
+    margin: 0;
+    white-space: pre-wrap;
+    word-break: break-all;
+}
+
+.input-area {
+    background-color: #2d2d2d;
+    padding: 1rem 2rem;
+    border-top: 1px solid #404040;
+}
+
+.command-input-container,
+.user-input-container {
+    display: flex;
+    gap: 0.5rem;
+    align-items: center;
+}
+
+.user-input-container {
+    margin-top: 0.5rem;
+}
+
+input[type="text"] {
+    flex: 1;
+    padding: 0.75rem 1rem;
+    border: 1px solid #404040;
+    border-radius: 4px;
+    background-color: #1e1e1e;
+    color: #ffffff;
+    font-size: 14px;
+    font-family: 'Courier New', monospace;
+}
+
+input[type="text"]:focus {
+    outline: none;
+    border-color: #0d7377;
+    box-shadow: 0 0 0 2px rgba(13, 115, 119, 0.2);
+}
+
+button {
+    padding: 0.75rem 1.5rem;
+    border: none;
+    border-radius: 4px;
+    font-size: 14px;
+    font-weight: 600;
+    cursor: pointer;
+    transition: background-color 0.2s;
+}
+
+#run-btn {
+    background-color: #4caf50;
+    color: white;
+}
+
+#run-btn:hover:not(:disabled) {
+    background-color: #45a049;
+}
+
+#run-btn:disabled {
+    background-color: #666;
+    cursor: not-allowed;
+}
+
+#kill-btn {
+    background-color: #f44336;
+    color: white;
+}
+
+#kill-btn:hover:not(:disabled) {
+    background-color: #da190b;
+}
+
+#kill-btn:disabled {
+    background-color: #666;
+    cursor: not-allowed;
+}
+
+#send-btn {
+    background-color: #2196f3;
+    color: white;
+}
+
+#send-btn:hover:not(:disabled) {
+    background-color: #1976d2;
+}
+
+.timestamp {
+    font-size: 12px;
+    color: #888;
+    margin-bottom: 0.25rem;
+}
+
+/* Scrollbar styling for webkit browsers */
+.output-area::-webkit-scrollbar {
+    width: 8px;
+}
+
+.output-area::-webkit-scrollbar-track {
+    background: #1e1e1e;
+}
+
+.output-area::-webkit-scrollbar-thumb {
+    background: #404040;
+    border-radius: 4px;
+}
+
+.output-area::-webkit-scrollbar-thumb:hover {
+    background: #555;
+}
@@ -0,0 +1,179 @@
+const express = require('express')
+const WebSocket = require('ws')
+const { spawn } = require('child_process')
+const path = require('path')
+const http = require('http')
+
+const app = express()
+const server = http.createServer(app)
+const wss = new WebSocket.Server({ server })
+
+const PORT = process.env.PORT || 3000
+
+// Serve static files from public directory
+app.use(express.static('public'))
+
+// Route for main page
+app.get('/', (req, res) => {
+  res.redirect('/index.html')
+})
+
+// Store active Python processes
+const activeSessions = new Map()
+
+wss.on('connection', (ws) => {
+  console.log('Client connected')
+
+  ws.on('message', (message) => {
+    try {
+      const data = JSON.parse(message)
+
+      switch (data.type) {
+        case 'run_command':
+          handlePythonCommand(ws, data.command, data.sessionId)
+          break
+        case 'send_input':
+          handleUserInput(ws, data.input, data.sessionId)
+          break
+        case 'kill_session':
+          killSession(data.sessionId)
+          break
+      }
+    } catch (error) {
+      ws.send(
+        JSON.stringify({
+          type: 'error',
+          message: 'Invalid message format'
+        })
+      )
+    }
+  })
+
+  ws.on('close', () => {
+    console.log('Client disconnected')
+    // Clean up any active sessions for this client
+    for (let [sessionId, session] of activeSessions) {
+      if (session.ws === ws) {
+        killSession(sessionId)
+      }
+    }
+  })
+})
+
+function handlePythonCommand(ws, command, sessionId) {
+  // Kill existing session if any
+  if (activeSessions.has(sessionId)) {
+    killSession(sessionId)
+  }
+
+  // Parse command (simple split for POC)
+  const args = command.trim().split(' ')
+  const pythonCommand = args[0] === 'python' || args[0] === 'python3' ? args[0] : 'python3'
+  const scriptArgs = args[0] === 'python' || args[0] === 'python3' ? args.slice(1) : args
+
+  try {
+    // Spawn Python process
+    const pythonProcess = spawn(pythonCommand, scriptArgs, {
+      stdio: ['pipe', 'pipe', 'pipe']
+    })
+
+    // Store session
+    activeSessions.set(sessionId, {
+      process: pythonProcess,
+      ws: ws
+    })
+
+    // Send confirmation
+    ws.send(
+      JSON.stringify({
+        type: 'command_started',
+        sessionId: sessionId,
+        command: command
+      })
+    )
+
+    // Handle stdout
+    pythonProcess.stdout.on('data', (data) => {
+      ws.send(
+        JSON.stringify({
+          type: 'output',
+          sessionId: sessionId,
+          data: data.toString(),
+          stream: 'stdout'
+        })
+      )
+    })
+
+    // Handle stderr
+    pythonProcess.stderr.on('data', (data) => {
+      ws.send(
+        JSON.stringify({
+          type: 'output',
+          sessionId: sessionId,
+          data: data.toString(),
+          stream: 'stderr'
+        })
+      )
+    })
+
+    // Handle process exit
+    pythonProcess.on('close', (code) => {
+      ws.send(
+        JSON.stringify({
+          type: 'command_finished',
+          sessionId: sessionId,
+          exitCode: code
+        })
+      )
+      activeSessions.delete(sessionId)
+    })
+
+    // Handle process error
+    pythonProcess.on('error', (error) => {
+      ws.send(
+        JSON.stringify({
+          type: 'error',
+          sessionId: sessionId,
+          message: `Failed to start process: ${error.message}`
+        })
+      )
+      activeSessions.delete(sessionId)
+    })
+  } catch (error) {
+    ws.send(
+      JSON.stringify({
+        type: 'error',
+        sessionId: sessionId,
+        message: `Error running command: ${error.message}`
+      })
+    )
+  }
+}
+
+function handleUserInput(ws, input, sessionId) {
+  const session = activeSessions.get(sessionId)
+  if (session && session.process) {
+    session.process.stdin.write(input + '\n')
+  } else {
+    ws.send(
+      JSON.stringify({
+        type: 'error',
+        sessionId: sessionId,
+        message: 'No active session to send input to'
+      })
+    )
+  }
+}
+
+function killSession(sessionId) {
+  const session = activeSessions.get(sessionId)
+  if (session && session.process) {
+    session.process.kill()
+    activeSessions.delete(sessionId)
+  }
+}
+
+server.listen(PORT, () => {
+  console.log(`Server running on http://localhost:${PORT}`)
+  console.log('Open your browser and navigate to the URL above')
+})
@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+"""
+Simple calculator for testing input/output
+"""
+
+def main():
+    print("🧮 Simple Calculator")
+    print("-" * 20)
+    print("Enter expressions like: 2 + 3, 10 * 5, etc.")
+    print("Type 'quit' to exit")
+    
+    while True:
+        try:
+            expression = input("Calculate: ").strip()
+            
+            if expression.lower() == 'quit':
+                print("👋 Goodbye!")
+                break
+                
+            # Simple evaluation (unsafe in production, but fine for POC)
+            result = eval(expression)
+            print(f"Result: {result}")
+            
+        except Exception as e:
+            print(f"❌ Error: {e}")
+            print("Please enter a valid mathematical expression")
+
+if __name__ == "__main__":
+    main()
@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+"""
+Test Python script for the web CLI POC
+Demonstrates various interactive features
+"""
+
+import time
+import sys
+
+def main():
+    print("🐍 Python CLI Web Interface Test Script")
+    print("=" * 40)
+    
+    # Test basic output
+    print("Hello from Python!")
+    print("This is a test script to demonstrate the web interface.")
+    
+    # Test user input
+    name = input("What's your name? ")
+    print(f"Nice to meet you, {name}!")
+    
+    # Test multiple inputs
+    while True:
+        color = input("What's your favorite color? (or 'quit' to exit): ")
+        if color.lower() == 'quit':
+            break
+        print(f"🎨 {color} is a great choice!")
+    
+    # Test countdown with streaming output
+    print("\nStarting countdown...")
+    for i in range(5, 0, -1):
+        print(f"⏰ {i}...")
+        sys.stdout.flush()  # Force output to be sent immediately
+        time.sleep(1)
+    
+    print("🎉 Done! Thanks for testing the Python CLI Web Interface!")
+
+if __name__ == "__main__":
+    main()