app.py

from flask import Flask, request, json, send_file
from flask import send_from_directory
from character import generateCharacter
from cairosvg import svg2png

app = Flask(__name__,static_url_path='')

@app.route('/')
def home_page():
   return send_from_directory("static/", 'index.html')  

@app.route('/character', methods=['POST'])
def getCharacter():
  figure = {
  'svg': generateCharacter()
  }
  
  return figure

@app.route('/download', methods=['POST'])  
def downloadCharacter():
  xml = request.json['svgCode']
  with open("character.svg", "w") as f:
    f.write(xml)  
  if request.json['type'] == 'svg':
    return send_file('character.svg', mimetype='image/svg+xml')
  elif request.json['type'] == 'png':
    svg2png(url="character.svg", write_to="character.png")
    return send_file('character.png', mimetype='image/png')

# run app  
# app.run(debug=True)