/*
    EmployeeControlBreakReport.java
    CIS 111
    Dave Klick
    2013-11-15
    
    Reads in sequential file data, creates Employee objects,
    stores them in an ArrayList, and then sorts and displays
    the data in a control break report.
*/
import java.util.ArrayList;
import java.util.Collections;

class Employee implements Comparable<Employee> {
    public String name;
    public String dept;
    public double rate;
    public Employee(String nm, String dp, double rt) {
        name = nm;
        dept = dp;
        rate = rt;
    }
    public int compareTo(Employee e) {
        int n = dept.compareToIgnoreCase(e.dept);
        if (n == 0) n = name.compareToIgnoreCase(e.name);
        return n;
    }
}
    
public class EmployeeControlBreakReport extends CIS111App {
    public static void main(String[] args) {
        SequentialFile infile = new SequentialFile("emp.txt", FileMode.INPUT);
        ArrayList<Employee> list = new ArrayList<Employee>();

        // read records into ArrayList
        while (!infile.eof()) {
            list.add(new Employee(infile.readString(), infile.readString(), infile.readDouble()));
        }
        infile.close();

        // sort records
        Collections.sort(list);
        
        // do control break report - average rate per department
        String prevDept = "!!!!!";
        double deptRate = 0.0;
        int deptCount = 0;
        double totalRate = 0.0;
        int totalCount = 0;
        
        // display headings
        println("Name        Dept       Rate");
        println("----------  ------  -------");

        for (Employee emp : list) {
            // control break - show average for department
            if (!prevDept.equalsIgnoreCase(emp.dept) && totalCount>0) {
                printf("Department Average: %7.2f\n\n", deptRate / deptCount);
                totalRate += deptRate;
                deptCount = 0;
                deptRate = 0.0;
            }
            
            // display detail for each record
            printf("%-10s  %-6s  %7.2f\n", emp.name, emp.dept, emp.rate);

            // update totals
            prevDept = emp.dept;
            deptCount++;
            deptRate += emp.rate;
            totalCount++;
        }
        
        // control break - show average for last department
        printf("Department Average: %7.2f\n\n", deptRate / deptCount);
        totalRate += deptRate;

        // show average for all records
        printf("Company Average:    %7.2f\n\n", totalRate / totalCount);
    }
}