TaskManager.java

import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collections;
import java.util.Comparator;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.LinkedList;
import java.util.List;

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
/**
 *
 * @author Pearl Santos
 */
public class TaskManager {

    static LinkedList<Task> llTask = new LinkedList<>();

    //ArrayList<Task> tasks = new ArrayList<>();
    public TaskManager() {

    }

    public static void main(String[] args) {
        TaskManager tasks = new TaskManager();
        Task t1 = new Task("EJ Task", "Paper", new GregorianCalendar(2016, Calendar.FEBRUARY, 27).getTime(), new GregorianCalendar(2016, Calendar.MARCH, 2).getTime(), 3, "Low");
        Task t2 = new Task("Chi Task", "Reading", new GregorianCalendar(2016, Calendar.MARCH, 3).getTime(), new GregorianCalendar(2016, Calendar.MARCH, 9).getTime(), 3, "Med");
        Task t3 = new Task("Pearl Task", "Paper", new GregorianCalendar(2016, Calendar.FEBRUARY, 27).getTime(), new GregorianCalendar(2016, Calendar.MARCH, 2).getTime(), 3, "High");
        Task t4 = new Task("Ian Task", "Reading", new GregorianCalendar(2016, Calendar.MARCH, 3).getTime(), new GregorianCalendar(2016, Calendar.MARCH, 9).getTime(), 3, "High");
        tasks.addTask(t1);
        tasks.addTask(t2);
        tasks.addTask(t3);
        tasks.addTask(t4);

        Calendar cal = new GregorianCalendar(2016, Calendar.MARCH, 3);
        cal.set(Calendar.HOUR_OF_DAY, 10);
        cal.set(Calendar.MINUTE, 30);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);

        //     tasks.convertToHours(cal.getTime());
//        for(Task lol: llTask){
//            System.out.println("llTask "+lol.name);
//        }
//        Task t5 = new Task("Ian Task", "Reading", new GregorianCalendar(2016, Calendar.MARCH, 3).getTime(), new GregorianCalendar(2016, Calendar.MARCH, 9).getTime(), 5, "Low");
//        tasks.update(t5);
//        
//         for(Task lol: llTask){
//            System.out.println("llTask "+lol.name);
//        }
        int[] daysOfWeek = new int[]{0, 0, 0, 0, 0, 1, 1};
        tasks.groupTasksByDay(daysOfWeek, 2);

    }

    public ArrayList<Task>[] groupTasksByDay(int[] daysOfWeek, int numOfDays) {
        int indexll = 0;
        int hoursLeft = 24;
        ArrayList<Task>[] tasksensei = new ArrayList[daysOfWeek.length];
        for (int i = 0; i < daysOfWeek.length; i++) {
            if (daysOfWeek[i] == 1) {
                ArrayList<Task> day = new ArrayList<>();
                for (int j = 0; j < (llTask.size() / numOfDays) + 1; j++) {
                    if (indexll < llTask.size()) {
                        if (hoursLeft - llTask.get(indexll).returnDuration() > 0) {
                            day.add(llTask.get(indexll));
                            hoursLeft -= llTask.get(indexll).returnDuration();
                            indexll++;
                        } else {
                            hoursLeft = 24;
                            break;
                        }
                    } else {
                        break;
                    }
                }
                for (Task ta : day) {
                    System.out.println("Array " + i + " " + ta.name);
                }
                tasksensei[i] = day;
            }
        }
        return tasksensei;
    }

    public int convertToHours(Date date) {
        Calendar temp = new GregorianCalendar();
        temp.setTime(date);
        int year = temp.get(Calendar.YEAR);
        int month = temp.get(Calendar.MONTH);
        int day = temp.get(Calendar.DAY_OF_MONTH);
        Date baseDate = new GregorianCalendar(year, month, day).getTime();
        long diff = Math.abs(date.getTime() - baseDate.getTime());
        long diffHours = diff / (60 * 60 * 1000); //returns hours
        System.out.println((int) diffHours);
        return (int) diffHours;

    }

    public void update(Task newTask) {
        for (Task t : llTask) {
            if (t.name.equals(newTask.name)) {
                llTask.remove(t);
                break;
            }
        }
        addTask(newTask);
        //llTask.add(newTask);
        //addTask(newTask)
    }
    
    public void delete(Task newTask){
        for (Task t : llTask) {
            if (t.name.equals(newTask.name)) {
                llTask.remove(t);
                break;
            }
    }

    private void addTask(Task t) {
        //tasks.add(t);
//        Collections.sort(tasks, (Task o1, Task o2) -> {
//            long val = Math.abs(o1.returnQueue().peek().getTime() - o2.returnQueue().peek().getTime());
//            return (int) val;
//        });
        if (llTask.isEmpty()) {
            llTask.add(t);

        } else {
            int s = llTask.size();
            for (int i = 0; i < s; i++) {
                if (llTask.get(i).chosenDate().equals(t.chosenDate())) {
                    if (llTask.get(i).prioLvl == t.prioLvl) {
//                          System.out.println("ll prio: " + llTask.get(i).prioLvl);
//                        System.out.println("t prio: " + t.prioLvl);
                        if (llTask.get(i).diffLvl == t.diffLvl) {
                            if (llTask.get(i).returnDuration() == t.returnDuration()) {
                                llTask.add(i + 1, t);
                                break;
                            } else if (llTask.get(i).returnDuration() > t.returnDuration()) {
                                llTask.add(i, t);
                                break;
                            }
                        } else if (llTask.get(i).diffLvl < t.diffLvl) {

                            llTask.add(i, t);
                            break;
                        }
                    } else if (llTask.get(i).prioLvl < t.prioLvl) {
                        llTask.add(i, t);
                        break;
                    }
                } else if (llTask.get(i).chosenDate().compareTo(t.chosenDate()) == 1) {
                    llTask.add(i, t);
                    break;
                }
                if (i == s - 1) {
                    llTask.add(t);
                    break;
                }

            }
        }

    }

}