import gradio as gr
import hashlib

# Simulated user database (in a real app, this would be a secure database)
users = {
    "admin": "8c6976e5b5410415bde908bd4dee15dfb167a9c873fc4bb8a81f6f2ab448a918",  # password: admin
    "user": "04f8996da763b7a969b1028ee3007569eaf3a635486ddab211d512c85b9df8fb",  # password: user
}

def hash_password(password):
    return hashlib.sha256(password.encode()).hexdigest()

def login(username, password):
    if username in users and users[username] == hash_password(password):
        return f"Welcome, {username}!"
    else:
        return "Invalid username or password."

# Create the Gradio interface
iface = gr.Interface(
    fn=login,
    inputs=[
        gr.Textbox(label="Username"),
        gr.Textbox(label="Password", type="password")
    ],
    outputs=gr.Textbox(label="Result"),
    title="Login App",
    description="Enter your username and password to log in."
)

# Launch the app
if __name__ == "__main__":
    iface.launch()