package foundation.json.tree;

import java.util.List;

import foundation.json.JSONBuilder;
import foundation.json.JSONReader;
import foundation.json.JType;
import foundation.util.MapList;

public abstract class JNode {

	protected JNode parent;
	protected String fullName;
	protected String name;
	protected JType type;
	protected MapList<String, JNode> children;
	protected int level;
	
	
	public JNode(String fullName, String name, JType type, int level) {
		this.fullName = fullName;
		this.name = name;
		this.type = type;
		this.level = level;
	}

	public static JNode newInstance(JType type, String fullName, String name, int level) {
		if (JType.Unknown == type) {
			return null;
		}
			
		if (JType.Array == type ) {
			return new JArrayNode(fullName, name, level);
		}
		else if (JType.Object == type ) {
			return new JObjectNode(fullName, name, level);
		}
		else {
			return new JValueNode(fullName, name, level);
		}
	}
	
	public List<JNode> getChildren() {
		if (children == null) {
			return null;
		}
		
		return children.getItemList();
	}
	
	public void addOneChild(String name, JNode node) {
		children.add(name, node);
	}

	public static JNode createInstance(JNode parent, String name, JType type, int level) {
		JNode result = null;
		
		String fullName = parent.getFullName() + "." + name;
				
		if (JType.Array == type) {
			result = new JArrayNode(fullName, name, level);
		}
		else if (JType.Object == type) {
			result = new JObjectNode(fullName, name, level);
		}
		else {
			result = new JValueNode(fullName, name, level);
		}
		
		parent.addOneChild(name, result);
		return result;
	}

	public void loadJSON(JSONReader parentReader, int level) {
		JType type; JNode node = null; String fullName, name;
		
		for (JSONReader reader: parentReader) {
			type = reader.getType();
			name = reader.getName();
					
			if (JType.Array == type) {
				fullName = this.fullName + "." + name + "[]";
				
				node = new JArrayNode(fullName, name, level);
				children.add(fullName, node);
				
				node.loadJSON(reader, level + 1);
			}
			else if (JType.Object == type) {
				if (JType.Array == this.type) {
					fullName = this.fullName + "." + name + "[" + children.size() + "]";
				}
				else {
					fullName = this.fullName + "." + name;
				}
				
				node = new JObjectNode(fullName, parentReader.getName(), level);
				children.add(fullName, node);
				
				node.loadJSON(reader, level + 1);
			}
			else {
				fullName = parent.fullName + "." + name + "[]";
				
				node = new JValueNode(fullName, parentReader.getName(), level);
				children.add(fullName, node);
			}
		}
	}

	public abstract void toJSON(JSONBuilder builder);
	
	public abstract void toBand(JBand band);
	
	protected abstract void loadBandItem(JBand band, JBandItem bandItem);

	public boolean isSameName(String another) {
		return name.equalsIgnoreCase(another);
	}
	
	public String getFullName() {
		return fullName;
	}

	public String getName() {
		return name;
	}

}