# Import necessary libraries
import numpy as np
import joblib  # For loading the serialized model
import pandas as pd  # For data manipulation
from flask import Flask, request, jsonify  # For creating the Flask API

# Initialize the Flask application
superkart_forecast_revenue = Flask("Superkart Forecast Revenue")

# Load the trained machine learning model
model = joblib.load("forecast_sales_prediction_model_v1_0.joblib")

# Define a route for the home page (GET request)
@superkart_forecast_revenue.get('/')
def home():
    """
    This function handles GET requests to the root URL ('/') of the API.
    It returns a simple welcome message.
    """
    return "Welcome to the Superkart Forecast Revenue API!"

# Define an endpoint for single property prediction (POST request)
@superkart_forecast_revenue.post('/v1/revenue')
def forecast_revenue():
    """
    This function handles POST requests to the '/v1/revenue' endpoint.
    It expects a JSON payload containing store details and returns
    the predicted revenue as a JSON response.
    """
    # Get the JSON data from the request body
    store_data = request.get_json()

    print(store_data)

    # Extract relevant features from the JSON data
    sample = {
        'Product_Weight': store_data['Product_Weight'],
        'Product_Allocated_Area': store_data['Product_Allocated_Area'],
        'Product_MRP': store_data['Product_MRP'],
        'Product_Sugar_Content': store_data['Product_Sugar_Content'],
        'Product_Type': store_data['Product_Type'],
        'Store_Size': store_data['Store_Size'],
        'Store_Location_City_Type': store_data['Store_Location_City_Type'],
        'Store_Type': store_data['Store_Type']
        }

    # Convert the extracted data into a Pandas DataFrame
    input_data = pd.DataFrame([sample])

    # Make prediction (get log_price)
    forecast_revenue = float(model.predict(input_data)[0])

    # Return the actual price
    return jsonify({'Forecasted revenue (in dollars)': forecast_revenue})

# Run the Flask application in debug mode if this script is executed directly
if __name__ == '__main__':
    superkart_forecast_revenue.run(debug=True)