old_contents: import os
  import logging
  from whitenoise import WhiteNoise
  from flask import Flask, render_template, redirect
  from flask_sqlalchemy import SQLAlchemy
  from flask_bcrypt import Bcrypt
  
  app = Flask(__name__)
  app.wsgi_app = WhiteNoise(app.wsgi_app, root="static/")
  
  # Configurations
  app.config.update(
      SECRET_KEY=os.environ["SECRET_KEY"],
      SQLALCHEMY_DATABASE_URI=os.environ["DATABASE_URL"],
  )
  
  db = SQLAlchemy(app)
  bcrypt = Bcrypt(app)
  
  @app.route('/')
  def index():
      return render_template("index.html")
  
  # Hacky, need to find who's making this wrong request.
  @app.route('/resources/templates/common.html')
  def record():
      return redirect("/static/resources/templates/common.html")
new_contents: import os
  import logging
  from whitenoise import WhiteNoise
  from flask import Flask, render_template, redirect, request, abort, url_for, make_response
  from flask_sqlalchemy import SQLAlchemy
  from flask_bcrypt import Bcrypt
  
  app = Flask(__name__)
  app.wsgi_app = WhiteNoise(app.wsgi_app, root="static/")
  
  # Configurations
  app.config.update(
      SECRET_KEY=os.environ["SECRET_KEY"],
      SQLALCHEMY_DATABASE_URI=os.environ["DATABASE_URL"],
  )
  
  db = SQLAlchemy(app)
  bcrypt = Bcrypt(app)
  
  # Must import after db is defined, not pretty
  from models import User
  
  @app.route('/')
  def index():
      return render_template("index.html")
  
  # For testing purposes
  @app.route('/users')
  def users():
      return "<br>".join(map(lambda x: str(x), User.query.all()))
  
  @app.route('/register')
  def register():
      return render_template("register.html")
  
  @app.route('/register/submit', methods=["POST"])
  def submit():
      username = request.form.get("username")
      name = request.form.get("name", default="")
      email = request.form.get("email")
      password = request.form.get("password")
      
      # Quick way to check if any of these is None
      if None in [username, email, password]:
          return redirect(url_for("register"))
      
      new_user = User(username, email, name, password)
      db.session.add(new_user)
      db.session.commit()
      
      response = make_response(redirect(url_for("user")))
      response.set_cookie("username", username)
      
      return response
  
  @app.route('/user')
  def user():
      username = request.cookies.get("username")
      return render_template("user.html", username=username)
  
  @app.route('/login')
  def login():
      return render_template("login.html")
  
  @app.route('/login/validate', methods=["POST"])
  def validate():
      username = request.form.get("username")
      password = request.form.get("password")
      
      if None in [username, password]:
          return redirect(url_for("login"))
      
      if validate_password(username, password):
          response = make_response(redirect(url_for("user")))
          response.set_cookie("username", username)
          return response
      else:
          return redirect(url_for("login"))
      
  def validate_password(username, password):
      user = User.query.filter_by(username=username)[0]
      return user.check_password(password)
  
  # Hacky, need to find who's making this wrong request.
  @app.route('/resources/templates/common.html')
  def record():
      return redirect("/static/resources/templates/common.html")
subject: Add basic logic for login, register, and user info