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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>Research Paper Summarizer</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/4.1.1/animate.min.css"/>
    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/pdf-lib.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/[email protected]/build/pdf.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/openai.browser.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js"></script>
    <style>
        @import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');
        
        body {
            font-family: 'Poppins', sans-serif;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
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            border: 1px solid rgba(255, 255, 255, 0.18);
            transition: all 0.3s ease;
        }
        
        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.3);
        }
        
        .file-upload {
            border: 2px dashed #667eea;
            transition: all 0.3s ease;
        }
        
        .file-upload:hover {
            border-color: #764ba2;
            background: rgba(118, 75, 162, 0.05);
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        .btn-primary {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            transition: all 0.3s ease;
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        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        .pulse {
            animation: pulse 2s infinite;
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        @keyframes pulse {
            0% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.05);
            }
            100% {
                transform: scale(1);
            }
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        .loading-dots {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100%;
        }
        
        .loading-dots span {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background-color: #667eea;
            margin: 0 5px;
            animation: bounce 1.4s infinite ease-in-out both;
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        .loading-dots span:nth-child(1) {
            animation-delay: -0.32s;
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        .loading-dots span:nth-child(2) {
            animation-delay: -0.16s;
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        @keyframes bounce {
            0%, 80%, 100% {
                transform: scale(0);
            }
            40% {
                transform: scale(1);
            }
        }
        
        .fade-in {
            animation: fadeIn 0.5s ease-in;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .result-card {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(245, 247, 250, 0.9) 100%);
            border-left: 5px solid #667eea;
        }
    </style>
</head>
<body class="min-h-screen flex flex-col">
    <!-- Header -->
    <header class="gradient-bg text-white py-8 shadow-lg">
        <div class="container mx-auto px-4 text-center">
            <h1 class="text-4xl font-bold mb-2 animate__animated animate__fadeInDown">Research Paper Summarizer</h1>
            <p class="text-xl opacity-90 animate__animated animate__fadeIn animate__delay-1s">Transform complex research into concise summaries with AI</p>
        </div>
    </header>

    <!-- Main Content -->
    <main class="flex-grow container mx-auto px-4 py-8">
        <div class="max-w-3xl mx-auto">
            <!-- Upload Section -->
            <div class="card p-6 mb-8 animate__animated animate__fadeIn animate__delay-1s">
                <h2 class="text-2xl font-semibold mb-4 text-gray-800">Upload Your Research Paper</h2>
                
                <div class="mb-6">
                    <label for="api-key" class="block text-sm font-medium text-gray-700 mb-2">OpenAI API Key</label>
                    <input type="password" id="api-key" class="w-full px-4 py-2 rounded-lg border border-gray-300 focus:outline-none focus:ring-2 focus:ring-purple-500" placeholder="Enter your OpenAI API key">
                    <p class="text-xs text-gray-500 mt-1">Your API key is used only for processing and is not stored.</p>
                </div>
                
                <div class="file-upload p-8 rounded-lg text-center cursor-pointer mb-4" id="drop-area">
                    <input type="file" id="file-input" class="hidden" accept=".pdf">
                    <div class="flex flex-col items-center justify-center">
                        <svg xmlns="http://www.w3.org/2000/svg" class="h-12 w-12 text-purple-500 mb-3" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M15 13l-3-3m0 0l-3 3m3-3v12" />
                        </svg>
                        <p class="text-lg font-medium text-gray-700 mb-1">Drag & drop your PDF here</p>
                        <p class="text-sm text-gray-500">or click to browse files</p>
                    </div>
                </div>
                <p id="file-name" class="text-sm text-gray-600 text-center hidden"></p>
                
                <div class="flex justify-center mt-6">
                    <button id="process-btn" class="btn-primary text-white font-medium py-2 px-6 rounded-lg flex items-center disabled:opacity-50 disabled:cursor-not-allowed" disabled>
                        <span>Process Paper</span>
                        <svg id="process-spinner" class="hidden animate-spin ml-2 h-5 w-5 text-white" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24">
                            <circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle>
                            <path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
                        </svg>
                    </button>
                </div>
            </div>
            
            <!-- Results Section -->
            <div id="results-section" class="hidden animate__animated animate__fadeIn">
                <div class="flex justify-between items-center mb-6">
                    <h2 class="text-2xl font-semibold text-gray-800">Summary Results</h2>
                    <button id="download-btn" class="btn-primary text-white font-medium py-2 px-4 rounded-lg flex items-center">
                        <svg xmlns="http://www.w3.org/2000/svg" class="h-5 w-5 mr-2" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 16v1a3 3 0 003 3h10a3 3 0 003-3v-1m-4-4l-4 4m0 0l-4-4m4 4V4" />
                        </svg>
                        Download Summary
                    </button>
                </div>
                
                <!-- Summary Card -->
                <div class="result-card p-6 rounded-lg shadow-sm mb-6 fade-in">
                    <div class="flex items-center mb-4">
                        <div class="bg-purple-100 p-2 rounded-full mr-3">
                            <svg xmlns="http://www.w3.org/2000/svg" class="h-6 w-6 text-purple-600" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z" />
                            </svg>
                        </div>
                        <h3 class="text-xl font-medium text-gray-800">Summary</h3>
                    </div>
                    <div id="summary-content" class="text-gray-700">
                        <div class="loading-dots">
                            <span></span>
                            <span></span>
                            <span></span>
                        </div>
                    </div>
                </div>
                
                <!-- Topic Card -->
                <div class="result-card p-6 rounded-lg shadow-sm fade-in">
                    <div class="flex items-center mb-4">
                        <div class="bg-purple-100 p-2 rounded-full mr-3">
                            <svg xmlns="http://www.w3.org/2000/svg" class="h-6 w-6 text-purple-600" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 20l4-16m2 16l4-16M6 9h14M4 15h14" />
                            </svg>
                        </div>
                        <h3 class="text-xl font-medium text-gray-800">Predicted Main Topic</h3>
                    </div>
                    <div id="topic-content" class="text-gray-700">
                        <div class="loading-dots">
                            <span></span>
                            <span></span>
                            <span></span>
                        </div>
                    </div>
                </div>
            </div>
            
            <!-- Error Section -->
            <div id="error-section" class="hidden bg-red-50 border-l-4 border-red-500 p-4 mb-6 rounded-r-lg">
                <div class="flex">
                    <div class="flex-shrink-0">
                        <svg class="h-5 w-5 text-red-500" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" fill="currentColor">
                            <path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zM8.707 7.293a1 1 0 00-1.414 1.414L8.586 10l-1.293 1.293a1 1 0 101.414 1.414L10 11.414l1.293 1.293a1 1 0 001.414-1.414L11.414 10l1.293-1.293a1 1 0 00-1.414-1.414L10 8.586 8.707 7.293z" clip-rule="evenodd" />
                        </svg>
                    </div>
                    <div class="ml-3">
                        <h3 class="text-sm font-medium text-red-800" id="error-title">Error</h3>
                        <div class="mt-2 text-sm text-red-700" id="error-message">
                            <p>An error occurred while processing your request.</p>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </main>

    <!-- Footer -->
    <footer class="bg-white py-6 shadow-inner">
        <div class="container mx-auto px-4 text-center text-gray-600">
            <p>© 2023 Research Paper Summarizer. All rights reserved.</p>
        </div>
    </footer>

    <script>
        // Initialize variables
        let selectedFile = null;
        let summaryText = '';
        let topicText = '';
        let originalFileName = '';
        
        // Set up event listeners
        document.addEventListener('DOMContentLoaded', function() {
            const fileInput = document.getElementById('file-input');
            const dropArea = document.getElementById('drop-area');
            const fileNameDisplay = document.getElementById('file-name');
            const processBtn = document.getElementById('process-btn');
            const apiKeyInput = document.getElementById('api-key');
            const resultsSection = document.getElementById('results-section');
            const errorSection = document.getElementById('error-section');
            
            // Handle file selection via click
            dropArea.addEventListener('click', () => fileInput.click());
            
            // Handle file selection via input
            fileInput.addEventListener('change', (e) => {
                if (e.target.files.length) {
                    handleFileSelection(e.target.files[0]);
                }
            });
            
            // Handle drag and drop
            ['dragenter', 'dragover', 'dragleave', 'drop'].forEach(eventName => {
                dropArea.addEventListener(eventName, preventDefaults, false);
            });
            
            function preventDefaults(e) {
                e.preventDefault();
                e.stopPropagation();
            }
            
            ['dragenter', 'dragover'].forEach(eventName => {
                dropArea.addEventListener(eventName, highlight, false);
            });
            
            ['dragleave', 'drop'].forEach(eventName => {
                dropArea.addEventListener(eventName, unhighlight, false);
            });
            
            function highlight() {
                dropArea.classList.add('bg-purple-50');
            }
            
            function unhighlight() {
                dropArea.classList.remove('bg-purple-50');
            }
            
            dropArea.addEventListener('drop', (e) => {
                const dt = e.dataTransfer;
                const file = dt.files[0];
                if (file && file.type === 'application/pdf') {
                    handleFileSelection(file);
                }
            });
            
            // Handle file selection
            function handleFileSelection(file) {
                if (file.type !== 'application/pdf') {
                    showError('Invalid File Type', 'Please upload a PDF file.');
                    return;
                }
                
                selectedFile = file;
                originalFileName = file.name;
                fileNameDisplay.textContent = `Selected: ${file.name}`;
                fileNameDisplay.classList.remove('hidden');
                dropArea.innerHTML = `
                    <div class="flex items-center justify-center">
                        <svg xmlns="http://www.w3.org/2000/svg" class="h-8 w-8 text-green-500 mr-2" fill="none" viewBox="0 0 24 24" stroke="currentColor">
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                        </svg>
                        <span class="text-gray-700">${file.name}</span>
                    </div>
                `;
                
                // Enable process button if API key is present
                if (apiKeyInput.value.trim() !== '') {
                    processBtn.disabled = false;
                }
            }
            
            // Enable process button when API key is entered
            apiKeyInput.addEventListener('input', () => {
                if (apiKeyInput.value.trim() !== '' && selectedFile) {
                    processBtn.disabled = false;
                } else {
                    processBtn.disabled = true;
                }
            });
            
            // Process button click handler
            processBtn.addEventListener('click', async () => {
                if (!selectedFile || !apiKeyInput.value.trim()) return;
                
                // Show loading state
                processBtn.disabled = true;
                document.getElementById('process-spinner').classList.remove('hidden');
                processBtn.innerHTML = '<span>Processing</span>' + processBtn.innerHTML.split('<span>')[1];
                
                // Hide any previous errors
                errorSection.classList.add('hidden');
                
                try {
                    // Extract text from PDF
                    const text = await extractTextFromPDF(selectedFile);
                    
                    if (text.length < 1000) {
                        throw new Error('The document is too short for meaningful analysis.');
                    }
                    
                    // Show results section
                    resultsSection.classList.remove('hidden');
                    
                    // Process with OpenAI using fetch API
                    const summary = await callOpenAI(apiKeyInput.value.trim(), text, "summarize");
                    summaryText = ensureFullStop(summary);
                    document.getElementById('summary-content').innerHTML = `<p class="whitespace-pre-line">${summaryText}</p>`;
                    
                    const topic = await callOpenAI(apiKeyInput.value.trim(), text, "topic");
                    topicText = ensureFullStop(topic);
                    document.getElementById('topic-content').innerHTML = `<p class="whitespace-pre-line">${topicText}</p>`;
                    
                } catch (error) {
                    console.error('Error:', error);
                    showError('Processing Error', error.message || 'An error occurred while processing your request.');
                    resultsSection.classList.add('hidden');
                } finally {
                    // Reset button state
                    processBtn.disabled = false;
                    document.getElementById('process-spinner').classList.add('hidden');
                    processBtn.innerHTML = '<span>Process Paper</span>' + processBtn.innerHTML.split('<span>')[1];
                }
            });
            
            // Download button click handler
            document.getElementById('download-btn').addEventListener('click', async () => {
                if (!summaryText || !topicText) return;
                
                try {
                    // Create PDF
                    const { jsPDF } = window.jspdf;
                    const doc = new jsPDF();
                    
                    // Add title
                    doc.setFontSize(18);
                    doc.text('Research Paper Summary', 105, 20, { align: 'center' });
                    
                    // Add original filename
                    doc.setFontSize(12);
                    doc.setTextColor(100);
                    doc.text(`Original: ${originalFileName}`, 105, 30, { align: 'center' });
                    
                    // Add summary section
                    doc.setFontSize(14);
                    doc.setTextColor(0);
                    doc.text('Summary', 14, 45);
                    doc.setFontSize(12);
                    const summaryLines = doc.splitTextToSize(summaryText, 180);
                    doc.text(summaryLines, 14, 55);
                    
                    // Add topic section
                    const summaryHeight = summaryLines.length * 7;
                    doc.setFontSize(14);
                    doc.text('Predicted Main Topic', 14, 60 + summaryHeight);
                    doc.setFontSize(12);
                    const topicLines = doc.splitTextToSize(topicText, 180);
                    doc.text(topicLines, 14, 70 + summaryHeight);
                    
                    // Add footer
                    doc.setFontSize(10);
                    doc.setTextColor(100);
                    doc.text('Generated by Research Paper Summarizer', 105, 285, { align: 'center' });
                    
                    // Save the PDF
                    const pdfBlob = doc.output('blob');
                    const pdfUrl = URL.createObjectURL(pdfBlob);
                    
                    // Create download link
                    const downloadLink = document.createElement('a');
                    downloadLink.href = pdfUrl;
                    downloadLink.download = `${originalFileName.replace('.pdf', '')}_summary.pdf`;
                    document.body.appendChild(downloadLink);
                    downloadLink.click();
                    document.body.removeChild(downloadLink);
                    URL.revokeObjectURL(pdfUrl);
                    
                } catch (error) {
                    console.error('Error generating PDF:', error);
                    showError('PDF Generation Error', 'Failed to generate PDF download.');
                }
            });
        });
        
        // Helper function to call OpenAI API using fetch
        async function callOpenAI(apiKey, text, type) {
            let prompt = "";
            if (type === "summarize") {
                prompt = `Summarize the following research paper in 3-5 paragraphs, focusing on key findings, methodology, and conclusions:\n\n${text}`;
            } else {
                prompt = `What is the main topic or research question of the following paper? Respond with a concise 1-2 sentence answer:\n\n${text}`;
            }
            
            const response = await fetch("https://api.openai.com/v1/chat/completions", {
                method: "POST",
                headers: {
                    "Content-Type": "application/json",
                    "Authorization": `Bearer ${apiKey}`
                },
                body: JSON.stringify({
                    model: "gpt-3.5-turbo",
                    messages: [
                        {
                            role: "system",
                            content: type === "summarize" 
                                ? "You are a helpful research assistant that summarizes academic papers." 
                                : "You are a helpful research assistant that identifies key topics in academic papers."
                        },
                        {
                            role: "user",
                            content: prompt
                        }
                    ],
                    max_tokens: type === "summarize" ? 800 : 100,
                    temperature: type === "summarize" ? 0.5 : 0.3
                })
            });
            
            if (!response.ok) {
                const errorData = await response.json();
                throw new Error(errorData.error?.message || "Failed to process request with OpenAI");
            }
            
            const data = await response.json();
            return data.choices[0].message.content;
        }
        
        // Helper function to extract text from PDF
        async function extractTextFromPDF(file) {
            return new Promise((resolve, reject) => {
                const fileReader = new FileReader();
                
                fileReader.onload = async function() {
                    try {
                        // Initialize PDF.js
                        pdfjsLib.GlobalWorkerOptions.workerSrc = 'https://cdn.jsdelivr.net/npm/[email protected]/build/pdf.worker.min.js';
                        
                        const typedArray = new Uint8Array(this.result);
                        const pdf = await pdfjsLib.getDocument(typedArray).promise;
                        
                        let fullText = '';
                        
                        // Extract text from each page
                        for (let i = 1; i <= pdf.numPages; i++) {
                            const page = await pdf.getPage(i);
                            const textContent = await page.getTextContent();
                            const textItems = textContent.items.map(item => item.str);
                            fullText += textItems.join(' ') + '\n';
                        }
                        
                        resolve(fullText);
                    } catch (error) {
                        reject(error);
                    }
                };
                
                fileReader.onerror = reject;
                fileReader.readAsArrayBuffer(file);
            });
        }
        
        // Ensure text ends with punctuation
        function ensureFullStop(text) {
            text = text.trim();
            if (!text.endsWith('.') && !text.endsWith('!') && !text.endsWith('?')) {
                text += '.';
            }
            return text;
        }
        
        // Show error message
        function showError(title, message) {
            document.getElementById('error-title').textContent = title;
            document.getElementById('error-message').innerHTML = `<p>${message}</p>`;
            document.getElementById('error-section').classList.remove('hidden');
        }
    </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=shukdevdatta123/research-paper-summarizer-web" style="color: #fff;text-decoration: underline;" target="_blank" >Remix</a></p></body>
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