LeaveApplication.java

package implementation.chainOfResponsibility;

import java.time.LocalDate;
import java.time.Period;
//Represents a request in our chain of responsibility
public class LeaveApplication {
	
	public enum Type {Sick, PTO, LOP};
	
	public enum Status {Pending, Approved, Rejecetd };
	
	private Type type;
	
	private LocalDate from;
	
	private LocalDate to;
	
	private String processedBy;

	private Status status;
	
	public LeaveApplication(Type type, LocalDate from, LocalDate to) {
		this.type = type;
		this.from = from;
		this.to = to;
		this.status = Status.Pending; 
	}
	
	public Type getType() {
		return type;
	}

	public LocalDate getFrom() {
		return from;
	}

	public LocalDate getTo() {
		return to;
	}

	public int getNoOfDays() {
		return Period.between(from, to).getDays();
	}
	
	public String getProcessedBy() {
		return processedBy;
	}

	public Status getStatus() {
		return status;
	}

	public void approve(String approverName) {
		this.status = Status.Approved;
		this.processedBy = approverName;
	}

	public void reject(String approverName) {
		this.status = Status.Rejecetd;
		this.processedBy = approverName;
	}
	
	public static Builder getBuilder() {
		return new Builder();
	}
	
	@Override
	public String toString() {
		return type + " leave for "+getNoOfDays()+" day(s) "+status
				+ " by "+processedBy;
	}
	public static class Builder {
		private Type type;
		private LocalDate from;
		private LocalDate to;
		private LeaveApplication application;
		
		private Builder() {
			
		}
		
		public Builder withType(Type type) {
			this.type = type;
			return this;
		}
		
		public Builder from(LocalDate from) {
			this.from = from;
			return this;
		}
		
		public Builder to(LocalDate to) {
			this.to = to;
			return this;
		}
		
		public LeaveApplication build() {
			this.application = new LeaveApplication(type, from, to);
			return this.application;
		}
		
		public LeaveApplication getApplication() {
			return application;
		}
	}
}