app.py

import gradio as gr
import json
import time

status_file = "status.json"
command_file = "command.json"

# Initialize storage files
with open(status_file, "w") as f:
    json.dump({}, f)
with open(command_file, "w") as f:
    json.dump({}, f)

# Register PC as online
def register_pc(name, password):
    with open(status_file, "r") as f:
        status = json.load(f)
    status[name] = {"password": password, "timestamp": time.time()}
    with open(status_file, "w") as f:
        json.dump(status, f)
    return f"PC '{name}' registered as online."

# Check if PC is online
def check_pc(name):
    with open(status_file, "r") as f:
        status = json.load(f)
    if name in status and time.time() - status[name]["timestamp"] < 60:
        return "Online"
    return "Offline"

# Send command or register if command is "REGISTER"
def send_command(name, password, command):
    if command == "REGISTER":
        return register_pc(name, password)
    with open(status_file, "r") as f:
        status = json.load(f)
    if name in status and status[name]["password"] == password:
        with open(command_file, "w") as f:
            json.dump({"command": command}, f)
        return f"Command '{command}' sent to {name}."
    return "Authentication failed."

# Get command (for PC side polling)
def get_command():
    with open(command_file, "r") as f:
        cmd_data = json.load(f)
    return cmd_data.get("command", "")

with gr.Blocks() as ui:
    with gr.Row():
        name_input = gr.Textbox(label="PC Name")
        pass_input = gr.Textbox(label="Password", type="password")
    check_btn = gr.Button("Check Online Status")
    check_output = gr.Textbox(label="Status")
    check_btn.click(check_pc, inputs=name_input, outputs=check_output)

    with gr.Row():
        cmd_input = gr.Textbox(label="Command")
        send_btn = gr.Button("Send Command")
        send_output = gr.Textbox(label="Response")
    send_btn.click(send_command, inputs=[name_input, pass_input, cmd_input], outputs=send_output)
    
    # Hidden components to expose the get_command API endpoint.
    hidden_get_cmd_btn = gr.Button("Hidden Get Command", visible=False)
    hidden_cmd_output = gr.Textbox(visible=False)
    hidden_get_cmd_btn.click(get_command, inputs=[], outputs=hidden_cmd_output, api_name="/get_command")

ui.launch(share=True)