app.py

import gradio as gr
from datetime import datetime
from risk_model import predict_risk
import pandas as pd
import plotly.express as px
import logging
import os

# Setup logging
logging.basicConfig(level=logging.INFO, format="%(asctime)s - %(levelname)s - %(message)s")
logger = logging.getLogger(__name__)

# Store prediction history
history = []

def gradio_predict_risk(temperature, duration):
    """
    Makes predictions and updates the history of predictions.
    
    Args:
        temperature (float): Temperature in °C
        duration (float): Duration in minutes
    
    Returns:
        tuple: (prediction output, history table, history plot)
    """
    try:
        # Validate inputs
        temperature = float(temperature)
        duration = float(duration)
        
        # Make prediction
        risk_level, risk_score, alert = predict_risk(temperature, duration)
        
        # Generate timestamp
        timestamp = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
        
        # Update history
        history.append({
            "timestamp": timestamp,
            "temperature": temperature,
            "duration": duration,
            "risk_level": risk_level,
            "risk_score": risk_score,
            "alert": alert
        })
        
        # Keep only the last 10 predictions
        if len(history) > 10:
            history.pop(0)
        
        # Format prediction output
        prediction_output = (
            f"**Risk Level**: {risk_level}\n"
            f"**Risk Score**: {risk_score}% (Model Confidence)\n"
            f"**Alert**: {alert}\n"
            f"**Timestamp**: {timestamp}"
        )
        
        # Format history output
        history_df = pd.DataFrame(history)
        history_output = history_df.to_markdown(index=False) if not history_df.empty else "No predictions yet."
        
        # Generate history plot
        history_plot = create_history_plot(history_df)
        
        logger.info(f"Prediction made: Temperature={temperature}°C, Duration={duration} min, Result={prediction_output}")
        return prediction_output, history_output, history_plot
        
    except ValueError as e:
        logger.error(f"Input error: {e}")
        return f"Error: {e}", "No predictions yet.", None
    except Exception as e:
        logger.error(f"Unexpected error: {e}")
        return f"Error: An unexpected error occurred: {e}", "No predictions yet.", None

def create_history_plot(history_df):
    """
    Creates a scatter plot of prediction history using Plotly.
    
    Args:
        history_df (pd.DataFrame): DataFrame containing prediction history
    
    Returns:
        plotly.graph_objects.Figure: Plotly figure for scatter plot
    """
    if history_df.empty:
        return None
    
    # Define colors for risk levels
    colors = {
        "Low": "#4CAF50",  # Green
        "Moderate": "#FFC107",  # Amber
        "High": "#F44336"  # Red
    }
    
    # Create scatter plot
    fig = px.scatter(
        history_df,
        x="temperature",
        y="duration",
        color="risk_level",
        color_discrete_map=colors,
        title="Prediction History",
        labels={"temperature": "Temperature (°C)", "duration": "Duration (min)"},
        hover_data=["timestamp", "risk_score", "alert"]
    )
    
    # Update layout
    fig.update_layout(
        xaxis_range=[50, 200],
        yaxis_range=[5, 120],
        showlegend=True,
        template="plotly_dark"  # Use dark theme for compatibility
    )
    
    return fig

# Create Gradio interface
with gr.Blocks(theme=gr.themes.Soft()) as iface:
    gr.Markdown("# Heating Mantle Risk Prediction")
    gr.Markdown("Enter temperature and duration to predict the risk level of the heating mantle operation.")
    
    with gr.Row():
        temp_input = gr.Slider(minimum=50, maximum=200, value=100, label="Temperature (°C)", step=1)
        duration_input = gr.Slider(minimum=5, maximum=120, value=30, label="Duration (min)", step=1)
    
    predict_button = gr.Button("Predict Risk")
    
    with gr.Row():
        with gr.Column():
            prediction_output = gr.Textbox(label="Prediction Result", lines=5)
            history_output = gr.Textbox(label="Prediction History (Last 10)", lines=10)
        with gr.Column():
            history_plot = gr.Plot(label="Prediction History Plot")
    
    predict_button.click(
        fn=gradio_predict_risk,
        inputs=[temp_input, duration_input],
        outputs=[prediction_output, history_output, history_plot]
    )