package be.jeffcheasey88.peeratcode.parser.java.operations;

import java.io.BufferedWriter;
import java.util.List;
import java.util.function.BiFunction;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import be.jeffcheasey88.peeratcode.parser.java.CleanerPool;
import be.jeffcheasey88.peeratcode.parser.java.JavaElement;

public class AssigmentOperation extends JavaElement{
	
	private static Pattern PATTERN = Pattern.compile("^(\\s*([^\\s]+)\\s*=\\s*([^;]+);).*$");

	private String variable;
	private String value;
	
	public AssigmentOperation(){}
	
	@Override
	public int parse(String content, CleanerPool global, CleanerPool local) throws Exception{
		Matcher matcher = PATTERN.matcher(content);
		matcher.matches();
		
		this.variable = local.unzip(matcher.group(2), (s,p) -> s);
		this.value = local.unzip(matcher.group(3), (s,p) -> s);
		
		return matcher.group(1).length();
	}
	
	@Override
	public void build(BufferedWriter writer, int tab) throws Exception{
		super.build(writer, tab);
		writer.write(variable+"= "+value+";\n");
	}
	
	@Override
	public <E extends JavaElement> E find(java.util.function.Function<JavaElement, Boolean> search, java.util.function.Function<List<JavaElement>, Boolean> deep, List<JavaElement> trace){
		if(search.apply(this)) return (E)this;
		trace.add(this);
		int index = trace.size()-1;
		if(!deep.apply(trace)) return null;
		//value
		trace.remove(index);
		return null;
	}
	
	@Override
	public <E extends JavaElement> E find(BiFunction<JavaElement, List<JavaElement>, Boolean> search, List<JavaElement> trace){
		trace.add(this);
		int index = trace.size()-1;
		if(search.apply(this, trace)) return (E)this;
		//value
		trace.remove(index);
		return null;
	}
}