from flask import Flask, request, abort
import json

app = Flask(__name__)

import xxx

@app.route("/", methods=['GET', 'POST'])
def index():
    if request.method != 'POST' or not request.data:
        return abort(400);

    params = json.loads(request.data.decode(encoding='utf-8'))
    pos = params['pos']
    direction = params['dir']

    if len(pos) > 10 or direction not in (0, 225, 270, 315):
        return abort(400);

    ws, pot = xxx.run(direction, pos);
    return {
        'pos': pos,
        'ws': ws,
        'pot': pot,
        'dir': direction,
    }

if __name__ == "__main__":
        app.run(host='localhost', port='1234')