package pt.linkare.ant.propreaders;

import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Locale;

import pt.linkare.ant.InvalidPropertySpecException;
import pt.linkare.ant.MenuMessage;

public class LangStringPropertyReader extends AbstractPropertyReader{

	public LangStringPropertyReader() {
		super();
	}

	public String readProperty() throws InvalidPropertySpecException, UnsupportedEncodingException {
		
		return getLangString();
	}
	
	public String getLangString() throws InvalidPropertySpecException, UnsupportedEncodingException
	{
		MenuMessage menuOptionsLang=new MenuMessage();
		menuOptionsLang.setMessage(buildDefaultMessage(false));
		List<String>[] optionsAndValuesLang=null;
		if(getProperty().getMetaData("langs")!=null)
		{
			optionsAndValuesLang=buildLangOptions(getProperty().getMetaData("langs"));
		}
		else
			optionsAndValuesLang=buildLangOptions();
		menuOptionsLang.setOptions(optionsAndValuesLang[0]);
		menuOptionsLang.setOptionValues(optionsAndValuesLang[1]);
		if(getProperty().getPropertyDefaultValue()!=null)
			return getInput().readMenuOptionOrDefault(menuOptionsLang, getProperty().getPropertyDefaultValue());
		else
			return getInput().readMenuOption(menuOptionsLang);
	}

	@SuppressWarnings("unchecked")
	private List<String>[] buildLangOptions(String metaData) throws InvalidPropertySpecException {
		List<String> langs=parseOptions(metaData);
		List<String>[] optionsValuesRetVal=(List<String>[])new List[]{new ArrayList<String>(langs.size()),new ArrayList<String>(langs.size())};
		List<Locale> locales=new ArrayList<Locale>(langs.size());
		for(String lang:langs)
		{
			locales.add(new Locale(lang));
		}
		
		for(Locale locale:locales)
		{
			optionsValuesRetVal[0].add(locale.getDisplayLanguage());
			optionsValuesRetVal[1].add(locale.getLanguage());
		}
		return optionsValuesRetVal;
		
	}

	@SuppressWarnings("unchecked")
	private List<String>[] buildLangOptions() {
		Locale[] locales=Locale.getAvailableLocales();
		List<String>[] optionsValuesRetVal=(List<String>[])new List[]{new ArrayList<String>(locales.length),new ArrayList<String>(locales.length)};
		HashSet<String> languagesDone=new HashSet<String>();
		optionsValuesRetVal[0]=new ArrayList<String>();
		optionsValuesRetVal[1]=new ArrayList<String>(locales.length);
		for(Locale locale:locales)
		{
			if(!languagesDone.contains(locale.getLanguage()))
			{
				optionsValuesRetVal[0].add(locale.getDisplayLanguage());
				optionsValuesRetVal[1].add(locale.getLanguage());
				languagesDone.add(locale.getLanguage());
			}
		}
		return optionsValuesRetVal;
	}
	
	
	

	
}