From d656c5601e9bf01e9d8c8fe43c867ec4044d9e69 Mon Sep 17 00:00:00 2001
From: Navan Chauhan <navanchauhan@gmail.com>
Date: Sat, 5 Jun 2021 17:34:08 +0530
Subject: added sign in with google

---
 app/views/auth.py | 41 +++++++++++++++++++++++++++++++++++++++--
 1 file changed, 39 insertions(+), 2 deletions(-)

(limited to 'app/views/auth.py')

diff --git a/app/views/auth.py b/app/views/auth.py
index eb9a46a..983380e 100644
--- a/app/views/auth.py
+++ b/app/views/auth.py
@@ -1,11 +1,10 @@
-from app import app, db, models, login_manager
+from app import app, db, models, login_manager, oauth
 from app.forms.app_forms import UserSignUp, UserLogIn 
 from flask import render_template, flash,url_for, redirect
 from app.misc_func import flash_errors
 import flask_login
 from sqlalchemy.exc import IntegrityError
 
-
 @app.route("/signup", methods=['GET', 'POST'])
 def register_user():
     form = UserSignUp()
@@ -45,6 +44,44 @@ def signin_user():
         flash_errors(form)
     return render_template("auth/signin.html",form=form) 
 
+@app.route("/login/with/google")
+def login_with_google():
+    redirect_uri = url_for("login_with_google_auth", _external=True)
+    return oauth.google.authorize_redirect(redirect_uri)
+
+
+@app.route("/login/with/google/callback")
+def login_with_google_auth():
+    token = oauth.google.authorize_access_token()
+    g_user = oauth.google.parse_id_token(token)
+    print(g_user)
+    if g_user["email_verified"]:
+        user = models.User(
+            first_name=g_user["given_name"],
+            last_name=g_user["family_name"],
+            email=g_user["email"],
+            confirmation=True,
+            login_type="google")
+        db.session.add(user)
+        try:
+            db.session.commit()
+            flask_login.login_user(user)
+            return redirect(url_for("user_dashboard"))
+        except IntegrityError:
+            db.session.rollback()
+            user = models.User.query.filter_by(email=g_user["email"]).first()
+            if user.login_type == "google":
+                flask_login.login_user(user)
+                return redirect(url_for("user_dashboard"))
+            else:
+                flash("An account already exists for this email. Please use your password to log in.")
+                return redirect(url_for("signin_user"))
+    else:
+        return render_template(
+            "message.html",
+            message="To use sign-in with Google, you need a verified e-mail.",
+        )
+
 @app.route("/dashboard")
 @flask_login.login_required
 def user_dashboard():
-- 
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