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app.py
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# app.py
from flask import Flask, request, render_template_string, jsonify
import logging
logger = logging.getLogger(__name__)
def create_app(analyzer, privacy_preserver):
app = Flask(__name__)
@app.route('/', methods=['GET', 'POST'])
def index():
if request.method == 'POST':
text = request.form['text']
privacy_method = request.form['privacy_method']
# Original analysis
original_sentiment, original_score = analyzer.analyze(text)
# Privacy-preserved analysis
preserved_text = privacy_preserver.apply_privacy(text, method=privacy_method)
preserved_sentiment, preserved_score = analyzer.analyze(preserved_text)
result = {
'original': {'text': text, 'sentiment': original_sentiment, 'score': original_score},
'preserved': {'text': preserved_text, 'sentiment': preserved_sentiment, 'score': preserved_score},
'privacy_method': privacy_method
}
logger.info(f"Analysis completed. Original sentiment: {original_sentiment}, Preserved sentiment: {preserved_sentiment}")
return jsonify(result)
return render_template_string('''
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Privacy-Preserving Sentiment Analyzer</title>
<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
<style>
body { font-family: Arial, sans-serif; line-height: 1.6; padding: 20px; max-width: 800px; margin: 0 auto; }
h1 { color: #333; }
form { margin-bottom: 20px; }
textarea { width: 100%; height: 100px; }
.result { margin-top: 20px; border: 1px solid #ddd; padding: 10px; }
#comparisonChart { max-width: 500px; margin: 20px auto; }
</style>
</head>
<body>
<h1>Privacy-Preserving Sentiment Analyzer</h1>
<form id="analysisForm">
<textarea name="text" placeholder="Enter text to analyze" required></textarea><br>
<select name="privacy_method">
<option value="token_dropping">Token Dropping</option>
<option value="differential_privacy">Differential Privacy</option>
<option value="combined">Combined</option>
</select>
<button type="submit">Analyze</button>
</form>
<div id="result" class="result"></div>
<canvas id="comparisonChart"></canvas>
<script>
document.getElementById('analysisForm').addEventListener('submit', async (e) => {
e.preventDefault();
const formData = new FormData(e.target);
const response = await fetch('/', { method: 'POST', body: formData });
const result = await response.json();
document.getElementById('result').innerHTML = `
<h2>Results:</h2>
<h3>Original Text:</h3>
<p>${result.original.text}</p>
<p>Sentiment: ${result.original.sentiment} (Score: ${result.original.score.toFixed(2)})</p>
<h3>Privacy-Preserved Text (${result.privacy_method}):</h3>
<p>${result.preserved.text}</p>
<p>Sentiment: ${result.preserved.sentiment} (Score: ${result.preserved.score.toFixed(2)})</p>
`;
new Chart(document.getElementById('comparisonChart'), {
type: 'bar',
data: {
labels: ['Original', 'Privacy-Preserved'],
datasets: [{
label: 'Sentiment Score',
data: [result.original.score, result.preserved.score],
backgroundColor: ['rgba(75, 192, 192, 0.6)', 'rgba(255, 99, 132, 0.6)']
}]
},
options: {
scales: {
y: {
beginAtZero: true,
max: 1
}
}
}
});
});
</script>
</body>
</html>
''')
return app