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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>PyWeb - Online Python Editor</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>
    <style>
        .editor-container {
        }
        .editor {
            height: 100%;
            font-size: 14px;
            line-height: 1.5;
            tab-size: 4;
        }
        .output {
            height: 100%;
            overflow-y: auto;
            white-space: pre-wrap;
            background-color: #1e1e1e;
            color: #d4d4d4;
            font-family: 'Courier New', monospace;
            padding: 10px;
        }
        .sidebar {
            transition: all 0.3s ease;
        }
        .sidebar.collapsed {
            width: 50px;
        }
        .sidebar-item {
            transition: all 0.2s ease;
        }
        .sidebar-item:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }
        .tab {
            transition: all 0.2s ease;
        }
        .tab.active {
            border-bottom: 2px solid #3b82f6;
        }
        .autocomplete-list {
            position: absolute;
            background: #2d2d2d;
            border: 1px solid #444;
            max-height: 200px;
            overflow-y: auto;
            z-index: 100;
            width: 200px;
        }
        .autocomplete-item {
            padding: 5px 10px;
            cursor: pointer;
        }
        .autocomplete-item:hover {
            background-color: #3b82f6;
        }
        .line-numbers {
            background-color: #1e1e1e;
            color: #858585;
            text-align: right;
            padding-right: 10px;
            user-select: none;
        }
        .python-keyword {
            color: #569cd6;
        }
        .python-string {
            color: #ce9178;
        }
        .python-comment {
            color: #6a9955;
        }
        .python-function {
            color: #dcdcaa;
        }
        .python-number {
            color: #b5cea8;
        }
        .terminal {
            height: 100%;
            background-color: #1e1e1e;
            color: #d4d4d4;
            font-family: 'Courier New', monospace;
            padding: 10px;
            overflow-y: auto;
        }
        .terminal-input {
            background-color: transparent;
            border: none;
            outline: none;
            color: #d4d4d4;
            font-family: 'Courier New', monospace;
            width: 90%;
        }
        .terminal-prompt {
            color: #4CAF50;
        }
        .terminal-cursor {
            display: inline-block;
            width: 10px;
            height: 15px;
            background-color: #d4d4d4;
            animation: blink 1s infinite;
        }
        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0; }
        }
        .terminal-output {
            margin-bottom: 10px;
            white-space: pre-wrap;
        }
    </style>
</head>
<body class="bg-gray-900 text-white">
    <div class="flex flex-col h-screen">
        <!-- Top Navigation -->
        <div class="bg-gray-800 px-4 py-2 flex items-center justify-between border-b border-gray-700">
            <div class="flex items-center space-x-4">
                <div class="flex items-center">
                    <i class="fab fa-python text-blue-400 text-2xl mr-2"></i>
                    <h1 class="text-xl font-bold">PyWeb</h1>
                </div>
                <div class="hidden md:flex space-x-2">
                    <button class="px-3 py-1 rounded hover:bg-gray-700 flex items-center">
                        <i class="fas fa-file mr-1"></i> New
                    </button>
                    <button class="px-3 py-1 rounded hover:bg-gray-700 flex items-center">
                        <i class="fas fa-folder-open mr-1"></i> Open
                    </button>
                    <button class="px-3 py-1 rounded hover:bg-gray-700 flex items-center">
                        <i class="fas fa-save mr-1"></i> Save
                    </button>
                </div>
            </div>
            <div class="flex items-center space-x-4">
                <button id="run-btn" class="bg-green-600 hover:bg-green-700 px-4 py-1 rounded flex items-center">
                    <i class="fas fa-play mr-1"></i> Run
                </button>
                <div class="relative">
                    <button class="px-3 py-1 rounded hover:bg-gray-700">
                        <i class="fas fa-cog"></i>
                    </button>
                </div>
            </div>
        </div>

        <!-- Main Content -->
        <div class="flex flex-1 overflow-hidden">
            <!-- Sidebar -->
            <div id="sidebar" class="sidebar bg-gray-800 w-64 flex flex-col border-r border-gray-700">
                <div class="p-3 border-b border-gray-700 flex justify-between items-center">
                    <h2 class="font-semibold">Explorer</h2>
                    <button id="sidebar-toggle" class="text-gray-400 hover:text-white">
                        <i class="fas fa-chevron-left"></i>
                    </button>
                </div>
                <div class="flex-1 overflow-y-auto">
                    <div class="py-2">
                        <div class="sidebar-item px-4 py-2 flex items-center cursor-pointer">
                            <i class="fas fa-folder-open text-blue-400 mr-2"></i>
                            <span>Project</span>
                        </div>
                        <div class="ml-6">
                            <div class="sidebar-item px-4 py-2 flex items-center cursor-pointer">
                                <i class="fas fa-file-code text-yellow-400 mr-2"></i>
                                <span>main.py</span>
                            </div>
                            <div class="sidebar-item px-4 py-2 flex items-center cursor-pointer">
                                <i class="fas fa-file-code text-yellow-400 mr-2"></i>
                                <span>utils.py</span>
                            </div>
                        </div>
                    </div>
                    <div class="py-2 border-t border-gray-700">
                        <div class="sidebar-item px-4 py-2 flex items-center cursor-pointer">
                            <i class="fas fa-search text-purple-400 mr-2"></i>
                            <span>Search</span>
                        </div>
                    </div>
                    <div class="py-2 border-t border-gray-700">
                        <div id="terminal-tab" class="sidebar-item px-4 py-2 flex items-center cursor-pointer">
                            <i class="fas fa-terminal text-green-400 mr-2"></i>
                            <span>Terminal</span>
                        </div>
                    </div>
                </div>
            </div>

            <!-- Editor Area -->
            <div class="flex-1 flex flex-col overflow-hidden">
                <!-- Tabs -->
                <div class="bg-gray-800 border-b border-gray-700 flex overflow-x-auto">
                    <div id="editor-tab" class="tab active px-4 py-2 flex items-center border-r border-gray-700 cursor-pointer">
                        <i class="fas fa-file-code text-yellow-400 mr-2"></i>
                        <span>main.py</span>
                        <i class="fas fa-times ml-2 text-gray-400 hover:text-white"></i>
                    </div>
                    <div class="tab px-4 py-2 flex items-center border-r border-gray-700 cursor-pointer">
                        <i class="fas fa-file-code text-yellow-400 mr-2"></i>
                        <span>utils.py</span>
                        <i class="fas fa-times ml-2 text-gray-400 hover:text-white"></i>
                    </div>
                    <div class="px-4 py-2 flex items-center cursor-pointer hover:bg-gray-700">
                        <i class="fas fa-plus text-gray-400"></i>
                    </div>
                </div>

                <!-- Editor and Output -->
                <div id="editor-container" class="editor-container flex flex-col md:flex-row flex-1 overflow-hidden">
                    <!-- Editor -->
                    <div class="flex-1 flex overflow-hidden">
                        <div class="line-numbers overflow-y-auto"></div>
                        <textarea id="editor" class="editor flex-1 bg-gray-900 text-white p-4 outline-none resize-none overflow-auto" spellcheck="false"># Welcome to PyWeb - Python Editor
# Write your Python code here and click Run

def greet(name):
    """A simple greeting function"""
    return f"Hello, {name}!"

print(greet("World"))

# Try some math
result = 42 + 3.14 * 2
print(f"The answer is {result}")

# List comprehension example
squares = [x**2 for x in range(10)]
print(f"Squares: {squares}")</textarea>
                    </div>

                    <!-- Output -->
                    <div class="w-full md:w-1/3 bg-gray-800 border-t md:border-t-0 md:border-l border-gray-700 flex flex-col">
                        <div class="bg-gray-700 px-4 py-2 flex justify-between items-center">
                            <h3 class="font-semibold">Output</h3>
                            <div class="flex space-x-2">
                                <button id="clear-output" class="text-gray-400 hover:text-white">
                                    <i class="fas fa-trash-alt"></i>
                                </button>
                                <button class="text-gray-400 hover:text-white">
                                    <i class="fas fa-expand"></i>
                                </button>
                            </div>
                        </div>
                        <pre id="output" class="output flex-1"></pre>
                    </div>
                </div>

                <!-- Terminal (hidden by default) -->
                <div id="terminal-container" class="editor-container flex flex-col flex-1 overflow-hidden" style="display: none;">
                    <div class="terminal flex-1 flex flex-col">
                        <div class="bg-gray-700 px-4 py-2 flex justify-between items-center">
                            <h3 class="font-semibold">Terminal</h3>
                            <div class="flex space-x-2">
                                <button id="clear-terminal" class="text-gray-400 hover:text-white">
                                    <i class="fas fa-trash-alt"></i>
                                </button>
                                <button id="close-terminal" class="text-gray-400 hover:text-white">
                                    <i class="fas fa-times"></i>
                                </button>
                            </div>
                        </div>
                        <div id="terminal-content" class="flex-1 overflow-y-auto p-2">
                            <div class="terminal-output">
                                PyWeb Terminal v1.0<br>
                                Type 'help' for a list of commands<br><br>
                            </div>
                            <div class="terminal-line flex items-center">
                                <span class="terminal-prompt">user@pyweb:~$&nbsp;</span>
                                <input id="terminal-input" class="terminal-input" type="text" autofocus>
                                <span class="terminal-cursor"></span>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <!-- Status Bar -->
        <div class="bg-gray-800 px-4 py-1 flex justify-between items-center text-sm border-t border-gray-700">
            <div class="flex items-center space-x-4">
                <div class="flex items-center">
                    <i class="fab fa-python text-blue-400 mr-1"></i>
                    <span>Python 3.10</span>
                </div>
                <div class="hidden md:flex items-center">
                    <i class="fas fa-code-branch text-purple-400 mr-1"></i>
                    <span>main</span>
                </div>
            </div>
            <div class="flex items-center space-x-4">
                <div class="flex items-center">
                    <i class="fas fa-memory text-yellow-400 mr-1"></i>
                    <span>128 MB</span>
                </div>
                <div class="flex items-center">
                    <i class="fas fa-bolt text-green-400 mr-1"></i>
                    <span id="status-ready">Ready</span>
                </div>
            </div>
        </div>
    </div>

    <script>
        // DOM Elements
        const editor = document.getElementById('editor');
        const output = document.getElementById('output');
        const runBtn = document.getElementById('run-btn');
        const clearOutputBtn = document.getElementById('clear-output');
        const sidebar = document.getElementById('sidebar');
        const sidebarToggle = document.getElementById('sidebar-toggle');
        const statusReady = document.getElementById('status-ready');
        const terminalTab = document.getElementById('terminal-tab');
        const editorTab = document.getElementById('editor-tab');
        const terminalContainer = document.getElementById('terminal-container');
        const editorContainer = document.getElementById('editor-container');
        const terminalContent = document.getElementById('terminal-content');
        const terminalInput = document.getElementById('terminal-input');
        const clearTerminalBtn = document.getElementById('clear-terminal');
        const closeTerminalBtn = document.getElementById('close-terminal');

        // Terminal state
        let terminalHistory = [];
        let historyIndex = -1;
        let currentDirectory = '~';

        // Initialize line numbers
        function updateLineNumbers() {
            const lineNumbers = document.querySelector('.line-numbers');
            const lines = editor.value.split('\n');
            lineNumbers.innerHTML = '';
            
            for (let i = 1; i <= lines.length; i++) {
                const lineNumber = document.createElement('div');
                lineNumber.textContent = i;
                lineNumbers.appendChild(lineNumber);
            }
        }

        // Syntax highlighting (simplified)
        function applySyntaxHighlighting() {
            // This is a simplified version - a real implementation would use a proper lexer
            const code = editor.value;
            
            // Keywords to highlight
            const keywords = ['def', 'return', 'if', 'else', 'elif', 'for', 'while', 'in', 'and', 'or', 'not', 'True', 'False', 'None', 'import', 'from', 'as', 'class', 'try', 'except', 'finally', 'with', 'raise', 'is', 'lambda', 'nonlocal', 'global', 'yield', 'async', 'await'];
            
            // Simple regex-based highlighting
            let highlighted = code
                .replace(/(".*?"|'.*?')/g, '<span class="python-string">$1</span>')
                .replace(/#.*$/gm, '<span class="python-comment">$&</span>')
                .replace(/\b\d+\.?\d*\b/g, '<span class="python-number">$&</span>')
                .replace(new RegExp(`\\b(${keywords.join('|')})\\b`, 'g'), '<span class="python-keyword">$1</span>')
                .replace(/\b(def|class)\s+(\w+)\b/g, '<span class="python-keyword">$1</span> <span class="python-function">$2</span>');
            
            // Create a temporary div to hold the highlighted code
            const tempDiv = document.createElement('div');
            tempDiv.innerHTML = highlighted;
            
            // Get the cursor position
            const cursorPos = editor.selectionStart;
            
            // Replace the editor content (this will lose the cursor position)
            // In a real implementation, we would use a proper code editor library
            // that maintains cursor position during highlighting
            
            // For now, we'll just update the line numbers
            updateLineNumbers();
        }

        // Run Python code
        async function runPythonCode() {
            const code = editor.value;
            output.textContent = 'Running...';
            statusReady.textContent = 'Running';
            runBtn.disabled = true;
            runBtn.classList.remove('bg-green-600', 'hover:bg-green-700');
            runBtn.classList.add('bg-gray-600', 'cursor-not-allowed');
            
            try {
                // In a real implementation, you would send this to a backend service
                // that can execute Python code safely. For this demo, we'll simulate
                // execution with a timeout and some example output.
                
                // Simulate network delay
                await new Promise(resolve => setTimeout(resolve, 500));
                
                // Simulate execution
                const result = simulatePythonExecution(code);
                output.textContent = result;
                
                statusReady.textContent = 'Ready';
            } catch (error) {
                output.textContent = `Error: ${error.message}`;
                statusReady.textContent = 'Error';
            } finally {
                runBtn.disabled = false;
                runBtn.classList.add('bg-green-600', 'hover:bg-green-700');
                runBtn.classList.remove('bg-gray-600', 'cursor-not-allowed');
            }
        }

        // Simulate Python execution (for demo purposes)
        function simulatePythonExecution(code) {
            // This is just for demonstration - in a real app, you'd use a proper Python interpreter
            
            // Check for some common patterns to simulate different outputs
            if (code.includes('import os') && code.includes('os.system')) {
                return "Error: Restricted system call (os.system)";
            }
            
            if (code.includes('while True:')) {
                return "Error: Potential infinite loop detected";
            }
            
            if (code.includes('import sys') && code.includes('sys.exit')) {
                return "Process finished with exit code 0";
            }
            
            // Default simulated output
            return `Hello, World!
The answer is 48.28
Squares: [0, 1, 4, 9, 16, 25, 36, 49, 64, 81]

Process finished with exit code 0`;
        }

        // Clear output
        function clearOutput() {
            output.textContent = '';
        }

        // Toggle sidebar
        function toggleSidebar() {
            sidebar.classList.toggle('collapsed');
            const icon = sidebarToggle.querySelector('i');
            if (sidebar.classList.contains('collapsed')) {
                icon.classList.remove('fa-chevron-left');
                icon.classList.add('fa-chevron-right');
            } else {
                icon.classList.remove('fa-chevron-right');
                icon.classList.add('fa-chevron-left');
            }
        }

        // Terminal functions
        function showTerminal() {
            editorContainer.style.display = 'none';
            terminalContainer.style.display = 'flex';
            terminalInput.focus();
        }

        function showEditor() {
            terminalContainer.style.display = 'none';
            editorContainer.style.display = 'flex';
        }

        function clearTerminal() {
            terminalContent.innerHTML = `
                <div class="terminal-output">
                    PyWeb Terminal v1.0<br>
                    Type 'help' for a list of commands<br><br>
                </div>
                <div class="terminal-line flex items-center">
                    <span class="terminal-prompt">user@pyweb:~$&nbsp;</span>
                    <input id="terminal-input" class="terminal-input" type="text" autofocus>
                    <span class="terminal-cursor"></span>
                </div>
            `;
            terminalInput = document.getElementById('terminal-input');
            terminalInput.focus();
            setupTerminalInput();
        }

        function setupTerminalInput() {
            terminalInput.addEventListener('keydown', function(e) {
                if (e.key === 'Enter') {
                    const command = terminalInput.value.trim();
                    if (command) {
                        terminalHistory.push(command);
                        historyIndex = terminalHistory.length;
                        processCommand(command);
                    }
                } else if (e.key === 'ArrowUp') {
                    if (terminalHistory.length > 0 && historyIndex > 0) {
                        historyIndex--;
                        terminalInput.value = terminalHistory[historyIndex];
                        e.preventDefault();
                    }
                } else if (e.key === 'ArrowDown') {
                    if (terminalHistory.length > 0 && historyIndex < terminalHistory.length - 1) {
                        historyIndex++;
                        terminalInput.value = terminalHistory[historyIndex];
                        e.preventDefault();
                    } else if (historyIndex === terminalHistory.length - 1) {
                        historyIndex = terminalHistory.length;
                        terminalInput.value = '';
                        e.preventDefault();
                    }
                }
            });
        }

        function processCommand(command) {
            // Add the command to the terminal output
            const outputDiv = document.createElement('div');
            outputDiv.className = 'terminal-output';
            outputDiv.innerHTML = `<span class="terminal-prompt">user@pyweb:~$&nbsp;</span>${command}`;
            terminalContent.insertBefore(outputDiv, terminalContent.lastElementChild);

            // Process the command
            let response = '';
            const args = command.split(' ');
            const cmd = args[0].toLowerCase();

            switch (cmd) {
                case 'help':
                    response = `Available commands:<br>
                    help - Show this help message<br>
                    clear - Clear the terminal<br>
                    ls - List files<br>
                    cd [dir] - Change directory<br>
                    run - Run the current Python code<br>
                    python [code] - Execute Python code<br>
                    exit - Close the terminal`;
                    break;
                case 'clear':
                    clearTerminal();
                    return;
                case 'ls':
                    response = `main.py<br>utils.py<br>README.md`;
                    break;
                case 'cd':
                    if (args.length > 1) {
                        currentDirectory = args[1];
                        response = `Changed directory to ${currentDirectory}`;
                    } else {
                        response = `Usage: cd [directory]`;
                    }
                    break;
                case 'run':
                    runPythonCode();
                    response = `Running Python code from editor...`;
                    break;
                case 'python':
                    if (args.length > 1) {
                        const pythonCode = args.slice(1).join(' ');
                        try {
                            // This is just for demo - in a real app you'd use a proper interpreter
                            if (pythonCode.includes('print')) {
                                response = pythonCode.includes('"') ? 
                                    pythonCode.match(/"([^"]*)"/)[1] : 
                                    pythonCode.match(/'([^']*)'/)[1];
                            } else {
                                response = `Executed: ${pythonCode}`;
                            }
                        } catch (e) {
                            response = `Error: ${e.message}`;
                        }
                    } else {
                        response = `Usage: python [code]`;
                    }
                    break;
                case 'exit':
                    showEditor();
                    return;
                default:
                    response = `Command not found: ${cmd}. Type 'help' for available commands.`;
            }

            // Add the response to the terminal
            const responseDiv = document.createElement('div');
            responseDiv.className = 'terminal-output';
            responseDiv.innerHTML = response;
            terminalContent.insertBefore(responseDiv, terminalContent.lastElementChild);

            // Add a new input line
            const newInputDiv = document.createElement('div');
            newInputDiv.className = 'terminal-line flex items-center';
            newInputDiv.innerHTML = `
                <span class="terminal-prompt">user@pyweb:${currentDirectory}$&nbsp;</span>
                <input id="terminal-input" class="terminal-input" type="text" autofocus>
                <span class="terminal-cursor"></span>
            `;
            terminalContent.appendChild(newInputDiv);

            // Remove the old input
            terminalContent.removeChild(terminalContent.lastElementChild.previousElementSibling);

            // Set up the new input
            terminalInput = document.getElementById('terminal-input');
            setupTerminalInput();
            terminalInput.focus();
        }

        // Event Listeners
        editor.addEventListener('input', updateLineNumbers);
        editor.addEventListener('keydown', function(e) {
            if (e.key === 'Tab') {
                e.preventDefault();
                const start = this.selectionStart;
                const end = this.selectionEnd;
                
                // Insert tab character
                this.value = this.value.substring(0, start) + '    ' + this.value.substring(end);
                
                // Move cursor
                this.selectionStart = this.selectionEnd = start + 4;
                
                updateLineNumbers();
            }
        });
        
        runBtn.addEventListener('click', runPythonCode);
        clearOutputBtn.addEventListener('click', clearOutput);
        sidebarToggle.addEventListener('click', toggleSidebar);
        terminalTab.addEventListener('click', showTerminal);
        editorTab.addEventListener('click', showEditor);
        clearTerminalBtn.addEventListener('click', clearTerminal);
        closeTerminalBtn.addEventListener('click', showEditor);

        // Initialize
        updateLineNumbers();
        setupTerminalInput();
        
        // Auto-resize editor when window resizes
        window.addEventListener('resize', function() {
            updateLineNumbers();
        });
    </script>
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