package Classes.css.core;

import java.util.ArrayList;

import Classes.css.core.rule.JavaFX;
import Classes.css.core.rule.Padding;
import Classes.css.core.rule.Position;
import javafx.scene.Node;

public class Ruleset {
	
	/* Attributes */
	private Node target;
	private ArrayList<Rule> rule;
	
	
	/* Builder -> static instance builder */
	public static Ruleset load(Node target) {
		
		/* (1) Create instance */
		Ruleset instance = new Ruleset(target);
		
		/* (2) Chain design pattern */
		return instance;
		
	}
	
	
	/* Constructor */
	private Ruleset(Node target) {
		
		/* (1) Store target */
		this.target = target;
	
		/* (2) Init. rule list */
		this.rule = new ArrayList<Rule>();
		
	}
	
	
	/* Add a rule */
	public Ruleset add(String l_side, Object... r_side) throws Exception{
		

		/* (1) Init.
		------------------------------------ */
		/* (1) If no argument -> abort */
		if( r_side.length == 0 )
			throw new Exception("No @r_side given");
		
		/* (2) Init. rule container */
		Rule new_rule = null;
		
		
		/* (1) Manage Rule Type (auto Builder)
		------------------------------------ */
		/* (1) Padding*/
		if( l_side == "padding" )
			new_rule = (Rule) new Padding(r_side);
		
		/* (2) Position */
		else if( l_side == "top" || l_side == "left" || l_side == "right" || l_side == "bottom" )
			new_rule = (Rule) new Position(l_side, (int) r_side[0]);
		
		
		/* (x) If nothing custom -> suppose java fx rule */
		else
			new_rule = (Rule) new JavaFX(l_side, (String) r_side[0]);
		

		
		/* (2) Add the rule to the ruleset
		------------------------------------ */
		/* (1) Add the rule to the ruleset (only if not null) */
		if( new_rule != null )
			this.rule.add( new_rule );
		
		/* (2) Chain design pattern */
		return this;
		
	}
	
	
	/* Apply all rules */
	public void apply() throws Exception{
		
		/* (1) Init. meter */
		int i  = 0;
		int il = this.rule.size();
		
		/* (2) Apply each rule */
		for( ; i < il ; i++ )
			this.rule.get(i).apply(this.target);
			
		/* (3) Stop the Chain design pattern */
		return;
		
		
	}
	
	
	

}