added auth for email signups

flash_auth_app/project/auth.py

@@ -1,4 +1,6 @@
-from flask import Blueprint
+from flask import Blueprint, render_template, redirect, url_for, request
+from werkzeug.security import generate_password_hash, check_password_hash
+from .models import User
 from . import db
 
 auth = Blueprint('auth', __name__)
@@ -10,14 +12,40 @@ as right now `login`, `signup`, and `logout` only return text
 There will also be routes for handling POST requests from login and signup
 '''
 
+
 @auth.route('/login')
 def login():
-    return 'Login'
+    # return render_template('login.html')
+    return 'Login'  # placeholder
+
 
 @auth.route('/signup')
 def signup():
-    return 'Signup'
+    # return render_template('signup.html')
+    return 'Signup'  # placeholder
+
+
+@auth.route('/signup', methods=['POST'])
+def signup_post():
+    # validate and add user to db
+    email = request.form.get('email')
+    name = request.form.get('name')
+    password = request.form.get('password')
+
+    user = User.query.filter_by(email=email).first()  # Check if the email exists
+    if user:  # redirect back to sign-up page
+        return(redirect(url_for('auth.signup')))
+
+    # Create new user with form data
+    new_user = User(email=email, name=name, password=generate_password_hash(password, method='sha256'))
+
+    # Add new user to db
+    db.session.add(new_user)
+    db.session.commit()
+
+    return redirect(url_for('auth.login'))
+
 
 @auth.route('/logout')
 def logout():
-    return 'Logout'
+    return 'Logout'  # placeholder