app.py

import string
import random
import json
import requests

from urllib import urlencode

import flask
from flask import Flask, render_template, redirect, url_for
from flask import request, jsonify

app = Flask(__name__)

# === task settings =================================================

# yelp URL for OAuth2.0 toke:
YELP_AUTH_URL = "https://api.yelp.com/oauth2/token"

# path to credentials file (see credentials sample file):
CRED_FILE = "static/assets/docs/credentials"

# length you want your salt to be
SALT_LEN = 64 

# ===================================================================

def fetchCredentials():
 with open(CRED_FILE) as credentials:
 creds = json.load(credentials) 
 return creds

def getBearerToken(): 

 creds = fetchCredentials()

 data = urlencode({
 'client_id': creds['YELP_CLIENT_ID'],
 'client_secret': creds['YELP_CLIENT_SECRET'],
 'grant_type': 'client_credentials',
 })
 headers = {
 'content-type': 'application/x-www-form-urlencoded',
 }
 response = requests.request('POST', YELP_AUTH_URL, data=data, headers=headers)
 response = response.json()
 return response['access_token'] 

def makeSalt(len,chars):
 salt = ''.join(random.choice(chars) for x in range(len))
 salt = '-'+salt+'_'
 return salt

@app.route('/')
def main():
 global BEARER_TOKEN
 global SALT
 global SALTED_TOKEN
 BEARER_TOKEN = getBearerToken()
 SALT = makeSalt(SALT_LEN, string.ascii_letters + string.digits)
 SALTED_TOKEN = BEARER_TOKEN[0:int(len(BEARER_TOKEN)/2)] + SALT +\
 BEARER_TOKEN[int(len(BEARER_TOKEN)/2):len(BEARER_TOKEN)] 
 return render_template('index.html')


@app.route('/saltydog', methods=['POST'])
def giveItUp():
 outgoing = [{'term1': SALTED_TOKEN},
 {'term2': SALT}]
 return json.dumps(outgoing)

 
if __name__ == '__main__': 
 app.secret_key = 'super_secret_key'
 app.debug = True
 app.run(host='0.0.0.0', port= ) # choose your port