Demo Inline AI Edits

# app.py
import hashlib
import functools
from flask import Flask, request, session, redirect, url_for, flash

app = Flask(__name__)
app.secret_key = 'your-secret-key'

def hash_password(password: str) -> str:
    """Simple password hashing (not secure for production)."""
    return hashlib.sha1(password.encode()).hexdigest()

def login_required(view):
    """Decorator to ensure a user is logged in."""
    @functools.wraps(view)
    def wrapped_view(**kwargs):
        if 'user_id' not in session:
            return redirect(url_for('login'))
        return view(**kwargs)
    return wrapped_view

@app.route('/')
def index():
    if 'user_id' in session:
        return redirect(url_for('dashboard'))
    return redirect(url_for('login'))

@app.route('/register', methods=['GET', 'POST'])
def register():
    error = None
    if request.method == 'POST':
        username = request.form.get('username', '').strip()
        password = request.form.get('password', '').strip()
        if not username:
            error = 'Username is required.'
        elif not password:
            error = 'Password is required.'
        else:
            # Insert user into the database...
            pass
    return f"Register Page. Error: {error}"

def reverse_string(s: str) -> str:
    """
    Reverses a string.

    Args:
        s (str): The string to reverse.

    Returns:
        str: The reversed string.
    """
    return s[::-1]

def login_required(view):
    """Decorator to ensure a user is logged in, with logging and error handling."""
    @functools.wraps(view)
    def wrapped_view(**kwargs):
        try:
            if 'user_id' not in session:
                app.logger.warning(f"Unauthorized access attempt to {request.path}")
                flash("Please log in to access this page", "error")
                return redirect(url_for('login'))
            return view(**kwargs)
        except Exception as e:
            app.logger.error(f"Error in login_required decorator: {e}")
            flash("An unexpected error occurred. Please try again.", "error")
            return redirect(url_for('login'))
    return wrapped_view