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

app = Flask(__name__)
CORS(app, resources={r"/vectorize": {"origins": "*"}})

def convert_to_vector(image):
    input_path = "temp_input.jpg"
    output_path = "temp_output.svg"

    # Save the input image to a temporary file
    image.save(input_path)

    # Convert the image to SVG using vtracer with default settings
    vtracer.convert_image_to_svg_py(
        input_path,
        output_path,
        colormode="color",
        hierarchical="stacked",
        mode="spline",
        filter_speckle=4,
        color_precision=6,
        layer_difference=16,
        corner_threshold=60,
        length_threshold=4.0,
        max_iterations=10,
        splice_threshold=45,
        path_precision=3
    )

    # Read the SVG content
    with open(output_path, "rb") as f:
        svg_content = f.read()

    # Clean up temporary files
    os.remove(input_path)
    os.remove(output_path)

    return svg_content

@app.route('/vectorize', methods=['POST'])
def vectorize_endpoint():
    try:
        # Handle raw image data in the request body
        if request.data:
            image = Image.open(io.BytesIO(request.data)).convert('RGB')
        # Fallback for multipart/form-data
        elif 'image' in request.files:
            file = request.files['image']
            image = Image.open(file).convert('RGB')
        else:
            return jsonify({'error': 'No image data provided'}), 400

        # Process the image to SVG
        svg_content = convert_to_vector(image)

        # Return the SVG as a response
        return send_file(
            io.BytesIO(svg_content),
            mimetype='image/svg+xml',
            as_attachment=True,
            download_name='vectorized.svg'
        )
    except Exception as e:
        return jsonify({'error': str(e)}), 500

@app.route('/')
def index():
    return jsonify({'status': 'Image Vectorization API is running'})

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=7860)