package fr.doap.jdb.utils;

import fr.doap.slog.*;

import java.io.*;
import java.util.*;

public class Utils {
	
	static public <K,V> Map<K,V> HashMapOf(K aK, V aV, Object ... aObjects) {
		Map<K,V> lMap = new HashMap<>();
		lMap.put(aK, aV);
		for (int i=0; i<aObjects.length/2; i++) lMap.put((K)aObjects[2*i], (V)aObjects[2*i+1]);
		return lMap;
	}
	
	static public String getShortClassname(Class<?> aClass) {
		return aClass.getCanonicalName();
		/*
		String[] lPackages = aClass.getPackageName().split("[.]");
		return String.join("", Arrays.asList(lPackages).stream().map(aP -> aP.substring(0,1)).toList())+"."+aClass.getSimpleName();
		 */
	}
	
	static public byte[] toByteArray(final Object obj) {
		ByteArrayOutputStream lBAOS = new ByteArrayOutputStream();
		try (ObjectOutputStream lOOS = new ObjectOutputStream(lBAOS)) {
			lOOS.writeObject(obj);
			lOOS.flush();
			return lBAOS.toByteArray();
		} catch (Exception ex) { L.w(ex); }
		return null;
	}
	
	static public Object fromByteArray(byte[] bytes) {
		ByteArrayInputStream lBAIS = new ByteArrayInputStream(bytes);
		try (ObjectInput lOI = new ObjectInputStream(lBAIS)) {
			return lOI.readObject();
		} catch (Exception ex) { L.w(ex); }
		return null;
	}
}