app.py

import gradio as gr
import os

# File to store user credentials
USER_FILE = "users.txt"

# Ensure the file exists
def initialize_user_file():
    if not os.path.exists(USER_FILE):
        with open(USER_FILE, "w") as file:
            pass

initialize_user_file()

# Function to check if user exists
def user_exists(phone):
    with open(USER_FILE, "r") as file:
        users = file.readlines()
    for user in users:
        stored_phone, _, _, _ = user.strip().split(",")
        if stored_phone == phone:
            return True
    return False

# Function to validate login credentials
def validate_user(phone, password):
    with open(USER_FILE, "r") as file:
        users = file.readlines()
    for user in users:
        stored_phone, _, _, stored_password = user.strip().split(",")
        if stored_phone == phone and stored_password == password:
            return True
    return False

# Function to handle login
def login(phone, password):
    if validate_user(phone, password):
        return "Login successful! Redirecting to the main page...", gr.update(visible=True), gr.update(visible=False)
    else:
        return "Invalid phone number or password. Please try again.", gr.update(visible=False), gr.update(visible=True)

# Function to handle signup
def signup(phone, name, email, password):
    if user_exists(phone):
        return "Phone number already exists. Please use a different phone number."
    else:
        with open(USER_FILE, "a") as file:
            file.write(f"{phone},{name},{email},{password}\n")
        return "Signup successful! You can now login."

# Main Page
def main_page():
    with gr.Blocks() as main:
        gr.Markdown("# Welcome to the Main Page")
        gr.Text("You are successfully logged in!")
    return main

# Login Interface
def login_interface():
    with gr.Blocks() as login_demo:
        gr.Markdown("# Login")
        phone = gr.Textbox(label="Phone Number")
        password = gr.Textbox(label="Password", type="password")
        output = gr.Textbox(label="Output")
        login_button = gr.Button("Login")

        main_content = main_page()
        main_content.visible = False

        login_button.click(login, inputs=[phone, password], outputs=[output, main_content, login_demo])

    return login_demo, main_content

# Signup Interface
def signup_interface():
    with gr.Blocks() as signup_demo:
        gr.Markdown("# Signup")
        phone = gr.Textbox(label="Phone Number")
        name = gr.Textbox(label="Name")
        email = gr.Textbox(label="Email")
        password = gr.Textbox(label="Password", type="password")
        output = gr.Textbox(label="Output")
        signup_button = gr.Button("Signup")

        signup_button.click(signup, inputs=[phone, name, email, password], outputs=output)

    return signup_demo

# Main interface
with gr.Blocks() as main_interface:
    gr.Markdown("# Login and Signup System")
    with gr.Tabs():
        with gr.Tab("Login"):
            login_demo, main_content = login_interface()
            main_interface.append(main_content)
        with gr.Tab("Signup"):
            signup_interface()

if __name__ == "__main__":
    main_interface.launch()