from flask import Flask, jsonify, request, send_file
from flask_cors import CORS
from PIL import Image
import io

# Initialize the Flask app
myapp = Flask(__name__)
CORS(myapp)  # Enable CORS if needed

@myapp.route('/')
def home():
    return "Welcome to the Image Upscaler!"  # Basic home response

@myapp.route('/upscale', methods=['POST'])
def upscale_image():
    if 'image' not in request.files:
        return jsonify({"error": "No image provided"}), 400

    input_image = request.files['image'].read()  # Read the uploaded image
    width = int(request.form.get('width', 2))  # User-specified upscale factor
    height = int(request.form.get('height', 2))

    # Open the image using PIL
    img = Image.open(io.BytesIO(input_image))

    # Resize the image using user-defined width and height
    upscaled_img = img.resize((img.width * width, img.height * height), Image.LANCZOS)
    
    # Save to bytes
    img_byte_arr = io.BytesIO()
    upscaled_img.save(img_byte_arr, format='PNG')
    img_byte_arr.seek(0)

    return send_file(img_byte_arr, mimetype='image/png')

# Add this block to make sure your app runs when called
if __name__ == "__main__":
    myapp.run(host='0.0.0.0', port=7860)  # Run directly if needed for testing