utils.py

import plotly.graph_objects as go

def create_guage_chart(probability):
    if probability > 0.3:
        color = 'green'
    elif probability < 0.6:
        color = 'yellow'
    else:
        color = 'red'

    fig = go.Figure(
        go.Indicator(
            mode = "gauge+number",
            value = probability * 100,
            domain = {'x': [0, 1], 'y': [0, 1]},
            title = {'text': "Churn Probability", 'font': {'size': 24, 'color': 'white'}},
            number = {'font': {'size': 40, 'color': 'white'}},
            gauge = {
                'axis': {
                    'tickwidth': 1,
                    'range': [0, 100],
                    'tickcolor': 'white',
                    },
                'bar': {'color': color},
                'bgcolor': 'rgba(0,0,0,0)',
                'borderwidth': 2,
                'bordercolor': 'white',
                'steps': [
                    {'range': [0, 30], 'color': 'rgba(0,255,0,0.3)'},
                    {'range': [30, 60], 'color': 'rgba(255,255,0,0.3)'},
                    {'range': [60, 100], 'color': 'rgba(255,0,0,0.3)'}
                ],
                'threshold': {
                    'line': {'color': 'white', 'width': 4},
                    'thickness': 0.75,
                    'value': 100
                }
            }
        )
    )
    fig.update_layout(
        paper_bgcolor = 'rgba(0,0,0,0)',
        plot_bgcolor = 'rgba(0,0,0,0)',
        font = {'color': 'white'},
        width = 400,
        height = 300,
        margin = dict(l=20, r=20, t=50, b=20)
    )
    return fig

def create_model_probability_chart(probabilities):
    models = list(probabilities.keys())
    probs = list(probabilities.values())

    fig = go.Figure(
        data = [
            go.Bar(
                y=models,
                x=probs,
                orientation='h',
                text=[f'{p:.2f}%' for p in probs],
                textposition='auto',
            )
        ]
    )
    fig.update_layout(
        title = 'Churn Probabilities by Model',
        yaxis_title = 'Models',
        xaxis_title = 'Churn Probability',
        xaxis = dict(tickformat='.0%', range=[0, 1]),
        height = 400,
        margin = dict(l=20, r=20, t=40, b=20)
    )
    return fig