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<!DOCTYPE html>
<html lang="en" data-bs-theme="dark">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Sentiment Analysis</title>
    <link href="https://cdn.replit.com/agent/bootstrap-agent-dark-theme.min.css" rel="stylesheet">
    <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.7.2/font/bootstrap-icons.css" rel="stylesheet">
</head>
<body>
    <div class="container py-5">
        <div class="row justify-content-center">
            <div class="col-md-8">
                <div class="card shadow-sm">
                    <div class="card-body">
                        <h1 class="card-title text-center mb-4">
                            <i class="bi bi-emoji-smile me-2"></i>
                            Sentiment Analysis
                        </h1>
                        
                        <div class="alert alert-info mb-4" role="alert">
                            <i class="bi bi-info-circle me-2"></i>
                            Enter your text below to analyze its sentiment. Our AI model will determine if the text expresses a positive or negative sentiment.
                        </div>

                        <form id="sentimentForm" class="mb-4">
                            <div class="mb-3">
                                <label for="textInput" class="form-label">Text to Analyze</label>
                                <textarea 
                                    class="form-control" 
                                    id="textInput" 
                                    rows="4" 
                                    placeholder="Enter your text here..."
                                    required></textarea>
                            </div>
                            <div class="d-grid">
                                <button type="submit" class="btn btn-primary" id="analyzeBtn">
                                    <span class="spinner-border spinner-border-sm d-none me-2" role="status" aria-hidden="true"></span>
                                    Analyze Sentiment
                                </button>
                            </div>
                        </form>

                        <div id="result" class="card d-none">
                            <div class="card-body text-center">
                                <h5 class="card-title mb-3">Analysis Result</h5>
                                <div class="result-content">
                                    <i class="bi bi-emoji-smile-fill result-icon fs-1 mb-3"></i>
                                    <p class="result-text fs-4 mb-0"></p>
                                    <p class="confidence-text text-muted mt-2"></p>
                                </div>
                            </div>
                        </div>

                        <div id="errorAlert" class="alert alert-danger d-none" role="alert">
                            <i class="bi bi-exclamation-triangle me-2"></i>
                            <span class="error-message"></span>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <script>
        document.addEventListener('DOMContentLoaded', () => {
            const form = document.getElementById('sentimentForm');
            const analyzeBtn = document.getElementById('analyzeBtn');
            const spinner = analyzeBtn.querySelector('.spinner-border');
            const resultCard = document.getElementById('result');
            const resultIcon = resultCard.querySelector('.result-icon');
            const resultText = resultCard.querySelector('.result-text');
            const confidenceText = resultCard.querySelector('.confidence-text');
            const errorAlert = document.getElementById('errorAlert');
            const errorMessage = errorAlert.querySelector('.error-message');

            form.addEventListener('submit', async (e) => {
                e.preventDefault();
                
                // Reset previous results
                resultCard.classList.add('d-none');
                errorAlert.classList.add('d-none');
                
                // Show loading state
                analyzeBtn.disabled = true;
                spinner.classList.remove('d-none');
                
                try {
                    const text = document.getElementById('textInput').value.trim();
                    
                    if (!text) {
                        throw new Error('Please enter some text to analyze.');
                    }
                    
                    const response = await fetch('/predict', {
                        method: 'POST',
                        headers: {
                            'Content-Type': 'application/json',
                        },
                        body: JSON.stringify({ text }),
                    });
                    
                    if (!response.ok) {
                        const error = await response.json();
                        throw new Error(error.error || 'Failed to analyze sentiment.');
                    }
                    
                    const result = await response.json();
                    
                    // Update result display
                    resultIcon.className = `bi ${result.sentiment === 'positive' ? 'bi-emoji-smile-fill' : 'bi-emoji-frown-fill'} result-icon fs-1 mb-3`;
                    resultText.textContent = `${result.sentiment.charAt(0).toUpperCase() + result.sentiment.slice(1)} Sentiment`;
                    confidenceText.textContent = `Confidence: ${Math.round(result.confidence * 100)}%`;
                    resultCard.classList.remove('d-none');
                    
                } catch (error) {
                    errorMessage.textContent = error.message;
                    errorAlert.classList.remove('d-none');
                } finally {
                    // Reset loading state
                    analyzeBtn.disabled = false;
                    spinner.classList.add('d-none');
                }
            });
        });
    </script>
</body>
</html>