Added basic registration - not fully tested. Includes user verification, linking to device.

app.py

@@ -1,16 +1,71 @@
-from flask import Flask
-
-import firebase_admin
-from firebase_admin import credentials
-from firebase_admin import firestore
+import json
+from random import randint 
+from flask import Flask, request
+from flask_mail import Mail
+from firebase_admin import credentials, firestore, auth
 
+# Initialize Flask app
 app = Flask(__name__)
+
+# Initalize Mail instance
+app.config['MAIL_SERVER']='smtp.gmail.com'
+app.config['MAIL_PORT'] = 465
+#app.config['MAIL_USERNAME'] = ''
+#app.config['MAIL_PASSWORD'] = ''
+app.config['MAIL_USE_TLS'] = False
+app.config['MAIL_USE_SSL'] = True
+mail = Mail(app)
+
+# Initialize Firebase
 firebase = firebase_admin.initialize_app(credentials.Certificate('firebase-key.json'))
 
+
 @app.route('/')
-def hello_world():  # put application's code here
+def hello_world():
     return 'Hello World! I am the dog you tracked with the amazing sensor from LEG industries...kidding this is just the home page :)'
 
+@app.route('/auth/register', methods=['POST']):
+def register():
+    email = request.form.get('email')
+    password = request.form.get('email')
+    name = request.form.get('name')
+    deviceId = request.form.get('deviceid')
+    
+    # Some fields are not present
+    if email is None or password is None or name is None or deviceId is None:
+        return Response("{'error':'Entires missing'}", status=400, mimetype='application/json')
+
+    # Register user with Firebase authentication
+    user = auth.create_user(
+        email=email
+        email_verified=False,
+        password=password,
+        display_name=name,
+        disabled=False)
+
+    # Prompt the user to verify their email
+    code = randint(100000, 999999)
+    data = {
+        u'code': code
+    }
+    firestore.client().collection(u'verification').document(user.uid).set(code)
+    msg = Message('Please verify your email for BarkFinder', sender = 'TBA', recipients = [email])
+    msg.body = '''Hey {}! Thank you for signing up for BarkFinder. 
+                In order to use our sevices, could you please verify your email address by logging in and entering this code {}'''
+                .format(name, code)
+    mail.send(msg)
+
+    # Link the user to the device
+    data = {
+        u'devices': [deviceId]
+    }
+    firestore.client().collection(u'devices').document(user.uid).set(data)
+    
+    # User succesfully created and linked to device
+    resp = {"uid":user.uid}
+    return Response(json.dumps(resp, 2), status=201, mimetype='application/json')
+
+
 # An example of reading data from Firebase
 # Taken from Firebase documentation
 @app.route('/example/read', methods=['GET'])