Slimefun4/src/me/mrCookieSlime/Slimefun/api/energy/ItemEnergy.java

package me.mrCookieSlime.Slimefun.api.energy;

import java.math.BigDecimal;
import java.util.List;

import org.bukkit.Material;
import org.bukkit.entity.Player;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.ItemMeta;

import me.mrCookieSlime.CSCoreLibPlugin.general.Player.PlayerInventory;

public class ItemEnergy {
	
//	"&c&o&8\u21E8 &e\u26A1 &70 / 50 J"
	
	public static float getStoredEnergy(ItemStack item) {
		if (item == null || item.getType() == null || item.getType().equals(Material.AIR)) return 0F;
		if (!item.hasItemMeta() || !item.getItemMeta().hasLore()) return 0F;
		
		for (String line: item.getItemMeta().getLore()) {
			if (line.startsWith("&c&o&8\u21E8 &e\u26A1 &7") && line.contains(" / ") && line.endsWith(" J")) {
				return Float.valueOf(line.split(" / ")[0].replace("&c&o&8\u21E8 &e\u26A1 &7", ""));
			}
		}
		
		return 0F;
	}
	
	public static float getMaxEnergy(ItemStack item) {
		if (item == null || item.getType() == null || item.getType().equals(Material.AIR)) return 0F;
		if (!item.hasItemMeta() || !item.getItemMeta().hasLore()) return 0F;
		
		for (String line: item.getItemMeta().getLore()) {
			if (line.startsWith("&c&o&8\u21E8 &e\u26A1 &7") && line.contains(" / ") && line.endsWith(" J")) {
				return Float.valueOf(line.split(" / ")[1].replace(" J", ""));
			}
		}
		
		return 0F;
	}
	
	public static float addStoredEnergy(ItemStack item, float energy) {
		if (item == null || item.getType() == null || item.getType().equals(Material.AIR)) return 0F;
		if (!item.hasItemMeta() || !item.getItemMeta().hasLore()) return 0F;
		
		float rest = 0F;
		float capacity = getMaxEnergy(item);
		
		if (capacity == 0F) {
			return rest;
		}
		
		float stored = getStoredEnergy(item);
		
		if (stored + energy > capacity) {
			rest = (stored + energy) - capacity;
			stored = capacity;
		}
		else if (stored + energy < 0) {
			stored = 0F;
		}
		else {
			stored = stored + energy;
		}
		
		List<String> lore = item.getItemMeta().getLore();
		
		int index = -1;
		for (int i = 0; i < lore.size(); i++) {
			String line = lore.get(i);
			if (line.startsWith("&c&o&8\u21E8 &e\u26A1 &7") && line.contains(" / ") && line.endsWith(" J")) {
				index = i;
				break;
			}
		}
		
		BigDecimal decimal = new BigDecimal(stored).setScale(2, BigDecimal.ROUND_HALF_UP);
		
		lore.set(index, "&c&o&8\u21E8 &e\u26A1 &7" + decimal.floatValue() + " / " + capacity + " J");
		
		ItemMeta im = item.getItemMeta();
		im.setLore(lore);
		item.setItemMeta(im);
		return rest;
	}
	
	public static ItemStack chargeItem(ItemStack item, float energy) {
		addStoredEnergy(item, energy);
		return item;
	}

	public static void chargeInventory(Player p, float energy) {
		p.getInventory().setItemInMainHand(chargeItem(p.getInventory().getItemInMainHand(), energy));
		p.getInventory().setItemInOffHand(chargeItem(p.getInventory().getItemInOffHand(), energy));
		p.getInventory().setHelmet(chargeItem(p.getInventory().getHelmet(), energy));
		p.getInventory().setChestplate(chargeItem(p.getInventory().getChestplate(), energy));
		p.getInventory().setLeggings(chargeItem(p.getInventory().getLeggings(), energy));
		p.getInventory().setBoots(chargeItem(p.getInventory().getBoots(), energy));
		
		PlayerInventory.update(p);
	}

}