package fr.stormer3428.test;import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.configuration.file.YamlConfiguration;
import org.bukkit.entity.Player;
import org.bukkit.inventory.ItemStack;
import org.bukkit.plugin.java.JavaPlugin;public class Test extends JavaPlugin{    @Override
    public void onEnable() {
        getCommand("test").setExecutor(this);
    }
    
    @Override
    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
        if(!(sender instanceof Player) || !command.getName().equalsIgnoreCase("test")) {
            return super.onCommand(sender, command, label, args);
        }
        Player p = (Player) sender;
        
        ItemStack it = p.getInventory().getItemInMainHand(); //we use the item in the player's main hand
        if(it == null) return false;                
        
        String blob = itemToStringBlob(it);         //convert itemstack to string
        p.sendMessage(blob);                         //display it
        ItemStack copy = stringBlobToItem(blob);    //use string to make a new itemstack that should (and is to my experience) identical
        p.getInventory().addItem(copy);                //give the copy
        
        return true;
    }
    
    /**
     * Serializes an {@link ItemStack} to a {@link String} 
     * 
     * The way it works is by creating a temporary {@link YamlConfiguration} and using it's method for serializing
     * it then simply returns the entire config file containing nothing but the item
     */
    public static String itemToStringBlob(ItemStack itemStack) {
        YamlConfiguration config = new YamlConfiguration();
        config.set("i", itemStack);
        return config.saveToString();
    } 
    
    /**
     * Deserializes a {@link String} back to an {@link ItemStack}, or null if malformed
     * 
     * It uses {@link YamlConfiguration}.getItemStack({@link String}) to retrieve the {@link ItemStack} from the given string
     */
    public static ItemStack stringBlobToItem(String stringBlob) {
        YamlConfiguration config = new YamlConfiguration();
        try {
            config.loadFromString(stringBlob);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
        return config.getItemStack("i", null);
    }
    
}