// NAME: Liane Nakamura
// STUDENT ID: 25806927

import java.util.ArrayList;
import java.util.Scanner;
import java.io.*;

//Payroll.java
//
//ICS H22 Fall 2005
//Lab 2: The Price You Pay
//
//This class should contain the majority of the code for your user interface.
//To help you get started, I've included a little bit of code:
//
//* In the constructor, I've created three objects that you'll need in
//various places: a Scanner to read input, a PayrollMenu (see
//PayrollMenu.java for more information about that), and an
//ArrayList<Employee> that you should use to store all of the employees.
//
//You should start by adding code to the go() method that displays the menu,
//asks the user for the next command, and processes that command.  (Be aware
//that the PayrollMenu object can do some of this work for you.  See the
//PayrollMenu.java file for more information before you proceed.)





public class Payroll
{
    private Scanner scanner;
    private ArrayList<Employee> employees;
    
    public Payroll(String fileName)
    {
        try 
        {
            File file = new File(fileName);
            scanner = new Scanner(file);
            System.out.println("File successfully read!");
            System.out.println("Starting Employee program...");
            // Program assumes everything in input file is correct.
        } 
        catch (FileNotFoundException e) 
        {
            System.out.println("Input file not found!");
            System.exit(1);
        }
        employees = new ArrayList<Employee>();
    }
    
    
    public void go()
    {
        welcome();
        while (scanner.hasNext()) 
        {
            String command = scanner.nextLine();  // Read instruction
            
            // ADD EMPLOYEES
            if (command.equals("AddEmployee")) 
                addEmployees();

            // REMOVE EMPLOYEES
            else if (command.equals("RemoveEmployee"))
                removeEmployees();
            
            // SHOW EMPLOYEES
            else if (command.equals("ShowEmployees")) 
                showEmployees();
            
            // WEEKLY PAYROLL
            else if (command.equals("WeeklyPayroll")) 
                weeklyPayroll();
        }
        
        
    }
    
    
    // addEmployees auxiliary method
    public void addEmployees() 
    {
        String name = scanner.next() + " " + scanner.next();    // Read name
        scanner.nextLine();                                     // Clear line
        
        for (Employee e : this.employees)                       // Checks to see if name is already in file
        {
            if (name.equals(e.getName())) 
            {
                System.out.println("Error:  Employee " + name + " already in file");
                System.out.println("        Please fix your input file and try again.");
                System.exit(1);
            }
        }
        
        String type = scanner.nextLine();                       // Read type of employee
        double wage = scanner.nextDouble();                     // Read wage
        int wageCents = (int) (wage * 100);                     // Convert wage into cents
        
        if (type.equals("Hourly"))                              // Make Hourly employee
        {  
            Employee employee = new EmployeeHourly(name, wageCents);
            employees.add(employee);
        }
        else if (type.equals("Salaried"))                       // Make Salaried employee
        {
            Employee employee = new EmployeeSalary(name, wageCents);
            employees.add(employee);
        }
        else if (type.equals("Contract"))                       // Make Contract employee
        {
            Employee employee = new EmployeeContract(name, wageCents);
            employees.add(employee);
        }
        System.out.println(name + " successfully added!");
    }
    
    
    // removeEmployees auxiliary function
    public void removeEmployees() 
    {
        String name = scanner.next() + " " + scanner.next();
        int counter = 0;
        for (Employee e : this.employees)
        {
            counter = counter + 1;
            if (name.equals(e.getName())) 
            {
                this.employees.remove(e);
                System.out.println(name + " successfully removed!");
                break;
            }
            else if (this.employees.size() == counter){
                System.out.println("Sorry, " + name + " is not in the list.  Nothing removed.");
            }
        }
    }
    
    
    // showEmployees auxiliary function
    public void showEmployees() 
    {
        System.out.println("\nAll Employees:");
        for (Employee e : this.employees)
        {
            System.out.println(e);
        }
    }
    
    
    // weeklyPayroll auxiliary function
    public void weeklyPayroll() 
    {
        System.out.println("\nPrinting weekly payroll:");
        int employeesSize = employees.size();
        for (int i = 0; i < employeesSize; i++) 
        {
            String name = scanner.next() + " " + scanner.next();
            int numOfHours = scanner.nextInt();
            
            for (Employee e : this.employees)
            {
                if (name.equals(e.getName())) 
                {
                    System.out.println(e.createWeeklyPaycheck(numOfHours));
                }
            }
        }
    }
    
    
    
    private void welcome()
    {
        System.out.println();
        System.out.println("ICS H22 Lab 3: The Price You Pay");
        System.out.println ();
    }
}