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from fastapi import FastAPI
from fastapi.responses import FileResponse
import matplotlib.pyplot as plt

app = FastAPI()

@app.get("/generate-chart")
def generate_chart():
    # Data for the pie chart
    labels = ['Closed', 'Onboarding WIP', 'BGV WIP', 'Client Approval WIP', 'Internal Review']
    sizes = [130, 40, 80, 50, 50]
    colors = ['blue', 'orange', 'green', 'purple', 'cyan']
    explode = (0.1, 0, 0, 0, 0)  # explode the largest slice (optional)

    # Create the pie chart
    plt.figure(figsize=(8, 6))
    plt.pie(sizes, explode=explode, labels=labels, colors=colors, autopct='%1.1f%%', startangle=140)
    plt.title("Open Positions by Phases")
    
    # Save the chart as an image
    chart_path = "chart.png"
    plt.savefig(chart_path)
    plt.close()

    # Return the chart image
    return FileResponse(chart_path)