app.py

import gradio as gr
import re

def classify_event(log_line):

    log = log_line.lower()

    # DEFAULT
    event_type = "unknown"
    risk = "low"

    # AUTH / NETWORK
    if "authenticated" in log:
        event_type = "authentication"
        risk = "low"

    elif "dhcp" in log:
        event_type = "network_management"
        risk = "low"

    elif "handshake" in log:
        event_type = "connection_established"
        risk = "low"

    # SECURITY EVENTS
    elif "packet filtered" in log:
        event_type = "firewall_action"
        risk = "medium"

    elif "port scan" in log:
        event_type = "reconnaissance_attack"
        risk = "high"

    # OUTPUT STRUCTURE
    return {
        "raw_log": log_line,
        "event_type": event_type,
        "risk_level": risk,
        "status": "analyzed"
    }


def nexus_security(input_text):
    lines = input_text.split("\n")
    return [classify_event(line) for line in lines]


gr.Interface(
    fn=nexus_security,
    inputs=gr.Textbox(lines=10, label="Security Logs"),
    outputs=gr.JSON(label="Security Analysis"),
    title="Nexus Security Dashboard"
).launch()