So the day after I thought of the idea, I got to work.
Starting
First I made a repl as that’s where I’m going to code everything.
Then I make a MongoDB database so I could work on saving data.
After that I made a repo so I could track my code process.
Format
Then I made a few files and folders:
main.pyapp.pyfunctions.pytemplates/login.htmltemplates/signup.html
Code
Then I started with the code.
I copied most of the code from other projects I’ve made with login and signup.
templates/login.html
<!DOCTYPE html>
<html lang="en-GB">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>Myfe - Login</title>
</head>
<body>
<h1>Myfe - Login</h1>
{% if error != False and error != None and error != "" %}
<p>{{error}}</p>
{% endif %}
<form method="POST" action="/login">
<input placeholder="username" name="username" autocomplete="off" required><br>
<input type="password" placeholder="password" name="password" autocomplete="off" required><br>
<button class="login-form-button">submit</button>
</form>
</body>
</html>
templates/signup.html
<!DOCTYPE html>
<html lang="en-GB">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>Myfe - Signup</title>
</head>
<body>
<h1>Myfe - Signup</h1>
{% if error != False and error != None and error != "" %}
<p>{{error}}</p>
{% endif %}
<form method="POST" action="/signup">
<input placeholder="username" name="username" autocomplete="off" required><br>
<input type="password" placeholder="password" name="password" autocomplete="off" required><br>
<input type="password" placeholder="password again" name="passwordagain" autocomplete="off" required><br>
<button class="login-form-button">submit</button>
</form>
</body>
</html>
functions.py
import pymongo
import os
from werkzeug.security import generate_password_hash, check_password_hash
from flask import session
import datetime
from string import printable
from html import escape as esc
import dns
clientm = pymongo.MongoClient(os.getenv("clientm"))
usersdb = clientm.Users
profilescol = usersdb.Profiles
def addcookie(key, value):
session[key] = value
def delcookies():
session.clear()
def getcookie(key):
try:
if (x := session.get(key)):
return x
else:
return False
except:
return False
def makeaccount(username, password, passwordagain):
if len(username) > 25:
return "Your username cannot have more than 25 letters!"
if len(username) < 2:
return "You have to have more than 2 letters in your username!"
if set(username).difference(printable) or esc(username) != username:
return "Your username cannot contain any special characters!"
if username != username.lower():
return "Your username has to be all lowercase!"
if checkusernamealready(username) == True:
return "A user already has this username! Try another one."
if password != passwordagain:
return "The two passwords don't match!"
if len(password) > 25:
return "Your password cannot have more than 25 letters!"
if len(password) < 2:
return "You have to have more than 2 letters in your password!"
if set(password).difference(printable):
return "Your password cannot contain any special characters!"
passhash = generate_password_hash(password)
document = [{
"Username": username,
"Password": passhash,
"Created": str(datetime.datetime.now()),
"Money": 100,
"XP": 0
}]
profilescol.insert_many(document)
return True
def gethashpass(username):
myquery = { "Username": username }
mydoc = profilescol.find(myquery)
for x in mydoc:
return x['Password']
return False
def getuserid(id):
myquery = { "_id": int(id) }
mydoc = profilescol.find(myquery)
for x in mydoc:
return True
return False
def getuser(username):
myquery = { "Username": username }
mydoc = profilescol.find(myquery)
for x in mydoc:
if x.get("Deleted", None) == None:
return x
return False
return False
def checkusernamealready(username):
myquery = { "Username": username }
mydoc = profilescol.find(myquery)
for x in mydoc:
return True
return False
app.py
from flask import Flask, render_template, request, redirect
from functions import getcookie, addcookie, makeaccount, delcookies, getuser, gethashpass
from werkzeug.security import check_password_hash
import os
app = Flask(__name__)
app.config['SECRET_KEY'] = os.getenv("SECRET_KEY")
@app.route('/')
def index():
if getcookie("User") == False:
return 'Hello Myfe world!'
else:
return f'Hello {getcookie("User")}'
@app.route("/signup")
def signuppage():
if getcookie("User") == False:
return render_template("signup.html")
else:
return redirect("/")
@app.route("/signup", methods=['POST', 'GET'])
def signupfunc():
if request.method == 'POST':
if getcookie("User") != False:
return redirect("/")
username = request.form['username']
password = request.form['password']
passwordagain = request.form['passwordagain']
func = makeaccount(username, password, passwordagain)
if func == True:
addcookie("User", username)
return redirect("/")
else:
return render_template("signup.html", error=func)
@app.route("/logout")
def logout():
delcookies()
return redirect("/")
@app.route("/login")
def loginpage():
if getcookie("User") == False:
return render_template("login.html")
else:
return redirect("/")
@app.route("/login", methods=['POST', 'GET'])
def loginfunc():
if request.method == 'POST':
if getcookie("User") != False:
return render_template("login.html", error="You have already logged in!")
username = request.form['username']
if getuser(username) == False:
return render_template("login.html", error="That is not a username!")
password = request.form['password']
if check_password_hash(gethashpass(username), password) == False:
return render_template("login.html", error="Wrong password!")
addcookie("User", username)
return redirect("/")
else:
return redirect("/")
main.py
from app import app
app.run(host='0.0.0.0', port=8080)
How it turned out
After writing the code, I tested it out here and saw that it had a fully functioning login and signup page!
Next I'll be working on a profile page, so if you want to see how that turns out, make sure to follow me!
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