Fix: Implemented CLI & GUI login system with hashing for #21

aaryanideas28_solutions/test_playground/projects/CLISystem.py

@@ -0,0 +1,96 @@
+import hashlib
+import os
+import tkinter as tk
+from tkinter import messagebox
+
+def get_hash(text):
+    return hashlib.sha256(text.encode()).hexdigest()
+
+def handle_gui_signup(u_input, p_input):
+    user = u_input.get()
+    pwd = p_input.get()
+    if user and pwd:
+        with open("users.txt", "a") as file:
+            file.write(f"{user},{get_hash(pwd)}\n")
+        messagebox.showinfo("Success", "Signup successful!")
+    else:
+        messagebox.showwarning("Error", "Fields cannot be empty")
+
+def handle_gui_login(u_input, p_input):
+    user = u_input.get()
+    pwd = p_input.get()
+    hashed_pwd = get_hash(pwd)
+    try:
+        with open("users.txt", "r") as file:
+            for line in file:
+                stored_user, stored_hash = line.strip().split(",")
+                if user == stored_user and hashed_pwd == stored_hash:
+                    messagebox.showinfo("Success", f"Welcome, {user}!")
+                    return
+        messagebox.showerror("Error", "Invalid credentials")
+    except FileNotFoundError:
+        messagebox.showerror("Error", "No users found")
+
+def launch_gui():
+    root = tk.Tk()
+    root.title("Healthcare Login - GUI Mode")
+    root.geometry("300x200")
+
+    tk.Label(root, text="Username:").pack()
+    u_input = tk.Entry(root)
+    u_input.pack()
+
+    tk.Label(root, text="Password:").pack()
+    p_input = tk.Entry(root, show="*")
+    p_input.pack()
+
+    tk.Button(root, text="Login", command=lambda: handle_gui_login(u_input, p_input)).pack(pady=5)
+    tk.Button(root, text="Signup", command=lambda: handle_gui_signup(u_input, p_input)).pack()
+
+    root.mainloop()
+
+def cli_signup():
+    user = input("Enter new username: ")
+    pwd = input("Enter new password: ")
+    with open("users.txt", "a") as file:
+        file.write(f"{user},{get_hash(pwd)}\n")
+    print("Signup successful!")
+
+def cli_login():
+    user = input("Username: ")
+    pwd = input("Password: ")
+    hashed_pwd = get_hash(pwd)
+    try:
+        with open("users.txt", "r") as file:
+            for line in file:
+                stored_user, stored_hash = line.strip().split(",")
+                if user == stored_user and hashed_pwd == stored_hash:
+                    return True
+        return False
+    except FileNotFoundError:
+        return False
+
+print("Choose Interface Mode:")
+print("1. CLI (Terminal)")
+print("2. GUI (Window)")
+mode = input("Select (1/2): ")
+
+if mode == "1":
+    while True:
+        os.system('cls' if os.name == 'nt' else 'clear')
+        print("1. Login\n2. Signup\n3. Exit")
+        choice = input("Select: ")
+        match choice:
+            case "1":
+                if cli_login():
+                    print("Welcome!")
+                    input("Press Enter to logout...")
+                else:
+                    print("Login failed.")
+                    input("Press Enter to try again...")
+            case "2":
+                cli_signup()
+            case "3":
+                break
+elif mode == "2":
+    launch_gui()