package cn.edu.bjut.chapter6;

public class Classification {
	protected char section;
	protected int mainClass;
	protected char subclass;
	protected int mainGroup;
	protected int subgroup;

	public final static char SEPARATOR = '/';

	public Classification(char section, int mainClass, char subclass, int mainGroup, int subgroup) {
		this.section = section;
		this.mainClass = mainClass;
		this.subclass = subclass;
		this.mainGroup = mainGroup;
		this.subgroup = subgroup;
	}

	// example: G09F 17/30
	public Classification(String symbol) {
		this.section = symbol.charAt(0);
		this.mainClass = Integer.parseInt(symbol.substring(1, 3));
		this.subclass = symbol.charAt(3);

		int pos = symbol.indexOf(SEPARATOR);
		this.mainGroup = Integer.parseInt(symbol.substring(4, pos).trim());
		this.subgroup = Integer.parseInt(symbol.substring(pos + 1));
	}

	public char getSection() {
		return section;
	}

	public void setSection(char section) {
		this.section = section;
	}

	public int getMainClass() {
		return mainClass;
	}

	public void setMainClass(int mainClass) {
		this.mainClass = mainClass;
	}

	public char getSubclass() {
		return subclass;
	}

	public void setSubclass(char subclass) {
		this.subclass = subclass;
	}

	public int getMainGroup() {
		return mainGroup;
	}

	public void setMainGroup(int mainGroup) {
		this.mainGroup = mainGroup;
	}

	public int getSubgroup() {
		return subgroup;
	}

	public void setSubgroup(int subgroup) {
		this.subgroup = subgroup;
	}

        @Override
	public boolean equals(Object obj) {
		if (this == obj) {
			return true;
		}
		
		if (obj == null || getClass() != obj.getClass()) {
			return false;
		}
		
		Classification other = (Classification) obj;
		if (mainClass != other.mainClass || mainGroup != other.mainGroup || 
				section != other.section || subclass != other.subclass || subgroup != other.subgroup) {
			return false;
		}
		
		return true;
	}

	@Override
	public String toString() {
		StringBuilder sb = new StringBuilder();

		sb.append(section);

		sb.append(String.format("%2s", mainClass).replace(' ', '0'));

		sb.append(subclass);

		sb.append(String.format("%4s", mainGroup));

		sb.append(SEPARATOR);

		sb.append(subgroup);

		return sb.toString();
	}
}