app.py

from flask import Flask, jsonify, request, render_template
from flask_pymongo import PyMongo
from flask_cors import CORS
import os

app = Flask(__name__)
CORS(app)


app.config["MONGO_URI"] = os.environ.get("MONGO_URI", "mongodb://localhost:27017/eshop_db")
mongo = PyMongo(app)
db = mongo.db 

@app.route('/')
def home():
    return render_template('homepage.html')

@app.route('/products')
def products():
    return render_template('products.html')

@app.route('/search', methods=['GET'])
def search_products():
    name = request.args.get('name', '').strip()
    category = request.args.get('category', '').strip()

    query = {}
    if name:
        query['name'] = {"$regex": name.replace(" ", ".*"), "$options": "i"}
    if category:
        query['category'] = {"$regex": f"^{category}$", "$options": "i"}

    
    products = list(db.products.find(query, {'_id': 0}).sort('id', 1))
    return jsonify(products)

@app.route('/search-by-category', methods=['GET'])
def search_by_category():
    category = request.args.get('category', '')
    if not category:
        return jsonify({'error': 'Missing category parameter'}), 400

    query = {"category": {"$regex": f"^{category}$", "$options": "i"}}
    
    
    products = list(db.products.find(query, {'_id': 0}).sort('id', 1))
    return jsonify(products)

@app.route('/like', methods=['POST'])
def like_product():
    try:
        product_id = request.json.get('id')
        
        if not isinstance(product_id, int) or product_id < 1:
            return jsonify({
                'status': 'failed',
                'message': 'Invalid ID: ID must be a positive integer'
            }), 400

        if not db.products.find_one({'id': product_id}):
            return jsonify({
                'status': 'failed',
                'message': f'Product with ID {product_id} not found'
            }), 200

        db.products.update_one(
            {'id': product_id},
            {'$inc': {'likes': 1}}
        )

        updated_product = db.products.find_one({'id': product_id}, {'_id': 0, 'likes': 1})
        return jsonify({
            'status': 'success',
            'new_likes': updated_product['likes']
        })

    except Exception as e:
        return jsonify({
            'status': 'error',
            'message': f'An error occurred: {str(e)}'
        }), 500

@app.route('/popular-products', methods=['GET'])
def popular_products():
    products = list(db.products.find({}, {'_id': 0}).sort('likes', -1).limit(5))
    return jsonify(products)

@app.errorhandler(404)
def page_not_found(e):
    return render_template('404.html'), 404

if __name__ == '__main__':
    app.run(host=os.getenv('FLASK_RUN_HOST', '127.0.0.1'), port=5000, debug=True)