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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>Transformers.js Text Generator</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <script src="https://cdn.jsdelivr.net/npm/@xenova/[email protected]"></script>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <style>
        .typewriter {
            border-right: 3px solid #4f46e5;
            white-space: nowrap;
            overflow: hidden;
            animation: blink-caret 0.75s step-end infinite;
        }
        
        @keyframes blink-caret {
            from, to { border-color: transparent }
            50% { border-color: #4f46e5; }
        }
        
        .fade-in {
            animation: fadeIn 0.5s ease-in;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }
        
        .scrollbar-hide::-webkit-scrollbar {
            display: none;
        }
        
        .scrollbar-hide {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }
    </style>
</head>
<body class="bg-gray-50 min-h-screen">
    <div class="container mx-auto px-4 py-8 max-w-4xl">
        <header class="mb-10 text-center">
            <h1 class="text-4xl font-bold text-indigo-600 mb-2">Transformers.js</h1>
            <h2 class="text-2xl font-semibold text-gray-700">GPT-2 Text Generator</h2>
            <p class="text-gray-500 mt-2">Powered by the browser with no server required</p>
        </header>
        
        <div class="bg-white rounded-xl shadow-lg overflow-hidden mb-8">
            <div class="p-6">
                <div class="flex items-center justify-between mb-4">
                    <h3 class="text-lg font-medium text-gray-900">Text Generation</h3>
                    <div class="flex items-center space-x-2">
                        <span id="model-status" class="px-3 py-1 rounded-full text-xs font-medium bg-indigo-100 text-indigo-800">
                            Model: Loading...
                        </span>
                        <button id="info-btn" class="text-gray-400 hover:text-indigo-600 transition-colors">
                            <i class="fas fa-info-circle"></i>
                        </button>
                    </div>
                </div>
                
                <div class="mb-4">
                    <label for="prompt" class="block text-sm font-medium text-gray-700 mb-2">Prompt</label>
                    <div class="relative">
                        <textarea 
                            id="prompt" 
                            rows="4" 
                            class="block w-full px-4 py-3 border border-gray-300 rounded-lg focus:ring-indigo-500 focus:border-indigo-500" 
                            placeholder="Start typing your prompt here..."></textarea>
                        <div class="absolute bottom-3 right-3 flex space-x-2">
                            <button id="clear-btn" class="p-1 text-gray-400 hover:text-indigo-600 transition-colors">
                                <i class="fas fa-trash-alt"></i>
                            </button>
                        </div>
                    </div>
                </div>
                
                <div class="grid grid-cols-1 md:grid-cols-2 gap-4 mb-6">
                    <div>
                        <label for="max-length" class="block text-sm font-medium text-gray-700 mb-1">Max Length</label>
                        <input type="range" id="max-length" min="10" max="500" value="50" class="w-full h-2 bg-gray-200 rounded-lg appearance-none cursor-pointer">
                        <div class="flex justify-between text-xs text-gray-500">
                            <span>10</span>
                            <span id="max-length-value">50</span>
                            <span>500</span>
                        </div>
                    </div>
                    
                    <div>
                        <label for="temperature" class="block text-sm font-medium text-gray-700 mb-1">Temperature</label>
                        <input type="range" id="temperature" min="0.1" max="1.5" step="0.1" value="0.7" class="w-full h-2 bg-gray-200 rounded-lg appearance-none cursor-pointer">
                        <div class="flex justify-between text-xs text-gray-500">
                            <span>0.1</span>
                            <span id="temperature-value">0.7</span>
                            <span>1.5</span>
                        </div>
                    </div>
                </div>
                
                <div class="flex justify-end space-x-3">
                    <button id="stop-btn" class="px-4 py-2 border border-gray-300 rounded-lg text-gray-700 bg-white hover:bg-gray-50 hidden">
                        <i class="fas fa-stop mr-2"></i> Stop
                    </button>
                    <button id="generate-btn" class="px-6 py-2 bg-indigo-600 text-white rounded-lg hover:bg-indigo-700 transition-colors flex items-center">
                        <i class="fas fa-bolt mr-2"></i> Generate
                    </button>
                </div>
            </div>
        </div>
        
        <div id="output-container" class="bg-white rounded-xl shadow-lg overflow-hidden hidden">
            <div class="p-6">
                <div class="flex items-center justify-between mb-4">
                    <h3 class="text-lg font-medium text-gray-900">Generated Text</h3>
                    <button id="copy-btn" class="px-3 py-1 text-sm text-indigo-600 hover:text-indigo-800 transition-colors flex items-center">
                        <i class="fas fa-copy mr-2"></i> Copy
                    </button>
                </div>
                
                <div id="output" class="bg-gray-50 p-4 rounded-lg min-h-32 max-h-96 overflow-y-auto scrollbar-hide">
                    <p class="text-gray-500 italic">Generated text will appear here...</p>
                </div>
                
                <div class="mt-4 flex justify-between items-center text-sm text-gray-500">
                    <div id="stats" class="flex space-x-4">
                        <span id="time-taken"><i class="fas fa-stopwatch mr-1"></i> --</span>
                        <span id="tokens-generated"><i class="fas fa-key mr-1"></i> -- tokens</span>
                    </div>
                    <button id="regenerate-btn" class="text-indigo-600 hover:text-indigo-800 transition-colors flex items-center">
                        <i class="fas fa-sync-alt mr-2"></i> Regenerate
                    </button>
                </div>
            </div>
        </div>
        
        <div id="info-modal" class="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50 hidden">
            <div class="bg-white rounded-xl max-w-md w-full mx-4 p-6">
                <div class="flex justify-between items-center mb-4">
                    <h3 class="text-lg font-medium text-gray-900">About This Demo</h3>
                    <button id="close-modal" class="text-gray-400 hover:text-gray-500">
                        <i class="fas fa-times"></i>
                    </button>
                </div>
                <div class="space-y-3 text-gray-600">
                    <p>This demo uses <span class="font-semibold">Transformers.js</span> to run a GPT-2 model directly in your browser with WebAssembly.</p>
                    <p>The model is quantized to reduce size and runs entirely client-side - no server processing required!</p>
                    <p><span class="font-semibold">Parameters:</span></p>
                    <ul class="list-disc pl-5 space-y-1">
                        <li><span class="font-medium">Max Length:</span> Controls how many tokens to generate</li>
                        <li><span class="font-medium">Temperature:</span> Higher values make output more random</li>
                    </ul>
                    <p class="pt-2 text-sm text-indigo-600"><i class="fas fa-info-circle mr-2"></i> First generation may take longer as the model loads.</p>
                </div>
            </div>
        </div>
    </div>

    <script>
        // DOM Elements
        const promptInput = document.getElementById('prompt');
        const generateBtn = document.getElementById('generate-btn');
        const stopBtn = document.getElementById('stop-btn');
        const clearBtn = document.getElementById('clear-btn');
        const copyBtn = document.getElementById('copy-btn');
        const regenerateBtn = document.getElementById('regenerate-btn');
        const outputContainer = document.getElementById('output-container');
        const outputDiv = document.getElementById('output');
        const maxLengthSlider = document.getElementById('max-length');
        const maxLengthValue = document.getElementById('max-length-value');
        const temperatureSlider = document.getElementById('temperature');
        const temperatureValue = document.getElementById('temperature-value');
        const timeTaken = document.getElementById('time-taken');
        const tokensGenerated = document.getElementById('tokens-generated');
        const modelStatus = document.getElementById('model-status');
        const infoBtn = document.getElementById('info-btn');
        const infoModal = document.getElementById('info-modal');
        const closeModal = document.getElementById('close-modal');
        
        // App State
        let pipeline = null;
        let controller = null;
        let isGenerating = false;
        let modelLoaded = false;
        
        // Initialize the model
        async function initializeModel() {
            try {
                modelStatus.textContent = 'Model: Loading...';
                
                // Load the GPT-2 model (quantized version for better performance)
                pipeline = await transformers.AutoModelForCausalLM.from_pretrained('Xenova/gpt2', {
                    quantized: true,
                    progress_callback: (progress) => {
                        const percent = Math.floor(progress * 100);
                        modelStatus.textContent = `Model: Loading ${percent}%`;
                    }
                });
                
                modelStatus.textContent = 'Model: Ready';
                modelStatus.className = 'px-3 py-1 rounded-full text-xs font-medium bg-green-100 text-green-800';
                modelLoaded = true;
                
                console.log('Model loaded successfully');
            } catch (error) {
                console.error('Error loading model:', error);
                modelStatus.textContent = 'Model: Failed to load';
                modelStatus.className = 'px-3 py-1 rounded-full text-xs font-medium bg-red-100 text-red-800';
            }
        }
        
        // Generate text function
        async function generateText() {
            if (!modelLoaded) {
                alert('Model is still loading. Please wait...');
                return;
            }
            
            const prompt = promptInput.value.trim();
            if (!prompt) {
                alert('Please enter a prompt');
                return;
            }
            
            isGenerating = true;
            generateBtn.disabled = true;
            stopBtn.classList.remove('hidden');
            outputContainer.classList.remove('hidden');
            
            // Clear previous output
            outputDiv.innerHTML = '<p class="typewriter">Generating...</p>';
            
            const maxLength = parseInt(maxLengthSlider.value);
            const temperature = parseFloat(temperatureSlider.value);
            
            // Start timing
            const startTime = performance.now();
            
            try {
                // Create a new AbortController for this generation
                controller = new AbortController();
                
                // Generate text
                const output = await pipeline(prompt, {
                    max_length: maxLength,
                    temperature: temperature,
                    do_sample: true,
                    signal: controller.signal,
                    callback_function: (text) => {
                        // Update output as it's being generated
                        outputDiv.innerHTML = `<p class="fade-in">${text}</p>`;
                    }
                });
                
                // Calculate stats
                const endTime = performance.now();
                const duration = ((endTime - startTime) / 1000).toFixed(2);
                const tokens = output.length;
                
                // Update stats
                timeTaken.innerHTML = `<i class="fas fa-stopwatch mr-1"></i> ${duration}s`;
                tokensGenerated.innerHTML = `<i class="fas fa-key mr-1"></i> ${tokens} tokens`;
                
                // Final output
                outputDiv.innerHTML = `<p class="fade-in">${output}</p>`;
                
            } catch (error) {
                if (error.name === 'AbortError') {
                    console.log('Generation stopped by user');
                    outputDiv.innerHTML = '<p class="text-gray-500 italic">Generation stopped.</p>';
                } else {
                    console.error('Error during generation:', error);
                    outputDiv.innerHTML = `<p class="text-red-500">Error: ${error.message}</p>`;
                }
            } finally {
                isGenerating = false;
                generateBtn.disabled = false;
                stopBtn.classList.add('hidden');
                controller = null;
            }
        }
        
        // Stop generation
        function stopGeneration() {
            if (controller && isGenerating) {
                controller.abort();
                isGenerating = false;
                generateBtn.disabled = false;
                stopBtn.classList.add('hidden');
            }
        }
        
        // Event Listeners
        generateBtn.addEventListener('click', generateText);
        stopBtn.addEventListener('click', stopGeneration);
        
        clearBtn.addEventListener('click', () => {
            promptInput.value = '';
            promptInput.focus();
        });
        
        copyBtn.addEventListener('click', () => {
            const textToCopy = outputDiv.textContent;
            navigator.clipboard.writeText(textToCopy).then(() => {
                // Show feedback
                const originalText = copyBtn.innerHTML;
                copyBtn.innerHTML = '<i class="fas fa-check mr-2"></i> Copied!';
                setTimeout(() => {
                    copyBtn.innerHTML = originalText;
                }, 2000);
            });
        });
        
        regenerateBtn.addEventListener('click', () => {
            if (promptInput.value.trim()) {
                generateText();
            }
        });
        
        maxLengthSlider.addEventListener('input', () => {
            maxLengthValue.textContent = maxLengthSlider.value;
        });
        
        temperatureSlider.addEventListener('input', () => {
            temperatureValue.textContent = temperatureSlider.value;
        });
        
        infoBtn.addEventListener('click', () => {
            infoModal.classList.remove('hidden');
        });
        
        closeModal.addEventListener('click', () => {
            infoModal.classList.add('hidden');
        });
        
        infoModal.addEventListener('click', (e) => {
            if (e.target === infoModal) {
                infoModal.classList.add('hidden');
            }
        });
        
        // Initialize the app
        document.addEventListener('DOMContentLoaded', () => {
            initializeModel();
            
            // Focus the prompt input on page load
            promptInput.focus();
        });
    </script>
<p style="border-radius: 8px; text-align: center; font-size: 12px; color: #fff; margin-top: 16px;position: fixed; left: 8px; bottom: 8px; z-index: 10; background: rgba(0, 0, 0, 0.8); padding: 4px 8px;">Made with <img src="https://enzostvs-deepsite.hf.space/logo.svg" alt="DeepSite Logo" style="width: 16px; height: 16px; vertical-align: middle;display:inline-block;margin-right:3px;filter:brightness(0) invert(1);"><a href="https://enzostvs-deepsite.hf.space" style="color: #fff;text-decoration: underline;" target="_blank" >DeepSite</a> - 🧬 <a href="https://enzostvs-deepsite.hf.space?remix=dauksza123/local-ai" style="color: #fff;text-decoration: underline;" target="_blank" >Remix</a></p></body>
</html>