app.py

from flask import Flask, render_template, request, redirect, url_for, flash, send_from_directory
from werkzeug.utils import secure_filename
import os
from caption_generator import generate_captions

app = Flask(__name__)
app.secret_key = 'your-secret-key-here'

# Replace with your own secret key for session management
# and CSRF protection in production.
UPLOAD_FOLDER = 'static/uploads'
ALLOWED_EXTENSIONS = {'png', 'jpg', 'jpeg', 'gif'}
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
app.config['MAX_CONTENT_LENGTH'] = 16 * 1024 * 1024  # 16MB

# Create the upload folder if it doesn't exist
os.makedirs(UPLOAD_FOLDER, exist_ok=True)

def allowed_file(filename):
    return '.' in filename and filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS

@app.route('/', methods=['GET', 'POST'])
def upload_file():
    if request.method == 'POST':
        if 'image' not in request.files:
            flash('No file selected')
            return redirect(request.url)
        
        file = request.files['image']
        if file.filename == '':
            flash('No selected file')
            return redirect(request.url)
        
        if file and allowed_file(file.filename):
            filename = secure_filename(file.filename)
            filepath = os.path.join(app.config['UPLOAD_FOLDER'], filename)
            file.save(filepath)
            
            try:
                caption_en, caption_ar = generate_captions(filepath)
                return render_template('index.html', 
                                   image_url=filename,
                                   caption_en=caption_en,
                                   caption_ar=caption_ar)
            except Exception as e:
                print(f"Error generating captions: {str(e)}")
                flash('Error generating descriptions')
                return redirect(request.url)
    
    return render_template('index.html')

@app.route('/uploads/<filename>')
def serve_image(filename):
    return send_from_directory(app.config['UPLOAD_FOLDER'], filename)

if __name__ == '__main__':
    app.run(debug=True)