//SalesReporter.java

import java.util.Scanner;

/**
 * Program to generate a sales report.
 */
public class SalesReporter
{
    private double highestSales;
    private double averageSales;
    private SalesAssociate[] team;  //The array object is
    //created in getData.
    private int numberOfAssociates; //Same as team.length

    /**
     * Reads the number of sales associates and data for each one.
    */
    public void getData()
    {
        Scanner keyboard = new Scanner(System.in);
        System.out.println("Enter number of sales associates:");
        numberOfAssociates = keyboard.nextInt();
        team = new SalesAssociate[numberOfAssociates+1];//We won't use team[0]
        for (int i = 1; i <= numberOfAssociates; i++)
        {
            team[i] = new SalesAssociate();
            System.out.println("Enter data for associate " + i);
            team[i].readInput();
            System.out.println();
        }
    }

    /**
     * Computes the average and highest sales figures.
     * Precondition: There is at least one salesAssociate.
     */
    public void computeStats()
    {
        double nextSales = team[1].getSales();
        highestSales = nextSales;
        double sum = nextSales;
        for (int i = 2; i <= numberOfAssociates; i++)
        {
            nextSales = team[i].getSales();
            sum = sum + nextSales;
            if (nextSales > highestSales)
                highestSales = nextSales; //highest sales so far.
        }
        averageSales = sum / numberOfAssociates;
    }

    /**
     * Displays sales report on the screen.
     */
    public void displayResults()
    {
        System.out.println("Average sales per associate is $" + averageSales);
        System.out.println("The highest sales figure is $" + highestSales);
        System.out.println();
        System.out.println("The following had the highest sales:");
        for (int i = 1; i <= numberOfAssociates; i++)
        {
            double nextSales = team[i].getSales();
            if (nextSales == highestSales)
            {
                team[i].writeOutput();
                System.out.println("$" + (nextSales - averageSales)
                    + " above the average.");
                System.out.println();
            }
        }

        System.out.println("The rest performed as follows:");
        for (int i = 1; i <= numberOfAssociates; i++)
        {
            double nextSales = team[i].getSales();
            if (team[i].getSales() != highestSales)
            {
                team[i].writeOutput();
                if (nextSales >= averageSales)
                    System.out.println("$" + (nextSales - averageSales)
                        + " above the average.");
                else
                    System.out.println("$" + (averageSales - nextSales)
                        + " below the average.");
                System.out.println();
            }
        }
    }

    public static void main(String[] args)
    {
        SalesReporter clerk = new SalesReporter();
        clerk.getData();
        clerk.computeStats();
        clerk.displayResults();
    }
}