package com.example.schedulerapp;

import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

/*
    Name: Shift
    Description: Contains all the shift information
*/
public class Shift {
    private int EmployeeID;
    private String date;
    private LocalDateTime start;
    private LocalDateTime end;
    private String position;
    private boolean available;
    private int shiftID;

    //todo: error checking on start/end? (end cannot be before start)
    /*
    Name: Shift
    Parameters:
        String shiftData: All shift information from the server separated by '.'
    Description: Parses and contains the shift information into the class.
    Return: Shift
     */
    public Shift(String shiftData){
        try {
            System.out.println(shiftData);
            DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-ddHHmm");
            String[] dataSplit = shiftData.split(",");
            this.EmployeeID = Integer.parseInt(dataSplit[0]);
            this.shiftID = Integer.parseInt(dataSplit[4]);
            if (dataSplit[2].length() == 3) dataSplit[2] = "0" + dataSplit[2];
            if (dataSplit[3].length() == 3) dataSplit[3] = "0" + dataSplit[3];
            this.start = LocalDateTime.parse(dataSplit[1] + dataSplit[2], formatter);
            this.end = LocalDateTime.parse(dataSplit[1] + dataSplit[3], formatter);
            this.date = dataSplit[1];
            this.available = 1 == Integer.parseInt(dataSplit[5]);
            this.position = dataSplit[6];
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }

    /*
    Name: getEmployeeID
    Parameters: none
    Description: Gets the employee id of the shift.
    Return:
        int: The employee id of the shift.
     */
    public int getEmployeeID() {
        return EmployeeID;
    }

    /*
    Name: getStart
    Parameters: none
    Description: Gets the start date and time of the shift.
    Return:
        LocalDateTime: The start date and time of the shift.
     */
    public LocalDateTime getStart() {
        return start;
    }

    /*
    Name: getEnd
    Parameters: none
    Description: Gets the end date and time of the shift.
    Return:
        LocalDateTime: The end date and time of the shift.
     */
    public LocalDateTime getEnd() {
        return end;
    }

    /*
    Name: getDate
    Parameters: none
    Description: Gets the date of the shift.
    Return:
        String: The date of the shift.
     */
    public String getDate() {
        return date;
    }

    /*
    Name: isAvailable
    Parameters: none
    Description: Checks if the shift is available.
    Return:
        boolean: The availability of the shift.
     */
    public boolean isAvailable() {
        return available;
    }

    /*
    Name: setEmployeeID
    Parameters:
        int employeeID: The id of an employee.
    Description: Changes the employee that is working the shift.
    Return: void
     */
    public void setEmployeeID(int employeeID) {
        EmployeeID = employeeID;
    }

    /*
    Name: setStart
    Parameters:
        LocalDateTime start: new LocalDateTime to be set.
    Description: Changes when the shift starts.
    Return: void
     */
    public void setStart(LocalDateTime start) {
        this.start = start;
    }

    /*
    Name: setEnd
    Parameters:
        LocalDateTime end: new LocalDateTime to be set.
    Description: Changes when the shift ends.
    Return: void
     */
    public void setEnd(LocalDateTime end) {
        this.end = end;
    }

    /*
    Name: setAvailable
    Parameters:
        boolean available: The new availability of the shift to be set.
    Description: Sets the availability of the shift
    Return: void
     */
    public void setAvailable(boolean available) {
        this.available = available;
    }

    /*
    Name: getShiftID
    Parameters: none
    Description: Gets the id of the shift.
    Return:
        int: The id of the shift.
     */
    public int getShiftID(){
        return shiftID;
    }

    public String getPosition(){
        return position;
    }

    // output: true if the two overlap at all, otherwise false
    public static boolean overlaps(Shift a, Shift b){
        return a.getEnd().isBefore(b.getStart()) && b.getEnd().isBefore(a.getStart());
    }
}