ERCoupons/ERCoupons/src/com/entryrise/coupons/Data.java


package com.entryrise.coupons;


import java.io.File;

import java.io.IOException;

import java.util.List;

import java.util.UUID;

import java.util.concurrent.Executor;

import java.util.concurrent.Executors;

import java.util.logging.Level;


import org.bukkit.Bukkit;

import org.bukkit.Material;

import org.bukkit.configuration.file.FileConfiguration;

import org.bukkit.configuration.file.YamlConfiguration;

import org.bukkit.entity.Player;

import org.bukkit.inventory.ItemStack;

import org.bukkit.inventory.PlayerInventory;

import org.bukkit.inventory.meta.ItemMeta;


import com.entryrise.coupons.mineutils.ItemBuilder;


public class Data {

 private static Executor exec;

 private static File dataf;

 private static FileConfiguration data;


 static {

 Data.exec = Executors.newSingleThreadExecutor();

 dataf = new File(Main.p.getDataFolder(), "data.yml");

 data = (FileConfiguration) new YamlConfiguration();

 }


 public static void Enabler(final boolean reload) {

 try {

 if (!dataf.exists()) {

 dataf.createNewFile();

 }

 data.load(dataf);

 } catch (Exception e) {

 e.printStackTrace();

 }

 }


 private static void saveData() {

 exec.execute(() -> {

 try {

 data.save(dataf);

 } catch (IOException e) {

 e.printStackTrace();

 }

 });

 }


 public static boolean setCredits(final UUID u, final long amount) {

 data.set("players." + u.toString() + ".credits", (Object) amount);

 saveData();

 return true;

 }


 public static long getCredits(final UUID u) {

 return data.getLong("players." + u.toString() + ".credits");

 }


 public static long getInCirculation() {

 if (!data.contains("players")) {

 return -1L;

 }

 long circulation = 0L;

 for (final String stg : data.getConfigurationSection("players").getKeys(false)) {

 circulation += data.getLong("players." + stg + ".credits", 0L);

 }

 return circulation;

 }


 public static void createCoupon(final Player p, final int credits) {

 if (p == null) {

 return;

 }


 final UUID u = p.getUniqueId();

 final long available = getCredits(u);


 int min = Main.config.getInt("settings.virtual.min");

 int max = Main.config.getInt("settings.virtual.max");


 if (credits > max) {

 p.sendMessage(Main.PREFIX + "You can make a coupon holding a maximum of " + max + " credits");

 return;

 }

 if (credits < min) {

 p.sendMessage(Main.PREFIX + "You can't make a coupon holding under " + min + " credits");

 return;

 }

 if (available < credits) {

 p.sendMessage(Main.PREFIX + "You need another " + (available - credits)

 + " credits to afford creating this coupon.");

 return;

 }

 if (p.getInventory().firstEmpty() == -1) {

 p.sendMessage(Main.PREFIX + "You need to make space in your inventory to create a coupon.");

 return;

 }


 final UUID couponid = UUID.randomUUID();


 setCredits(u, available - credits);

 data.set("coupons." + couponid.toString(), (Object) credits);

 saveData();


 ItemStack coupon = new ItemBuilder(Material.ENCHANTED_BOOK).setName("&c&a&b&a&lCredit Coupon")

 .setLore(new String[] { "&f", "&fThis coupon can be redeemed for &4&l" + credits + "&f credits.",

 "&fTo redeem, right click to claim this coupon", "", "&8" + couponid.toString() })

 .build();


 p.getInventory().addItem(coupon);

 }


 public static boolean couponAction(final Player p, final ItemStack coupon, final boolean redeem) {

 final UUID u = p.getUniqueId();


 if (coupon == null) {

 return false;

 }

 if (!coupon.hasItemMeta()) {

 return false;

 }

 final ItemMeta imeta = coupon.getItemMeta();

 if (coupon.getType() != Material.ENCHANTED_BOOK) {

 return false;

 }

 if (!imeta.getDisplayName().equals("§c§a§b§a§lCredit Coupon")) {

 return false;

 }

 if (!imeta.hasLore()) {

 safeAbort(p);

 return true;

 }

 final List<String> players = imeta.getLore();

 if (players.size() != 5) {

 safeAbort(p);

 return true;

 }

 String val = players.get(4);


 if (!val.startsWith("§8")) {

 safeAbort(p);

 return true;

 }


 UUID couponid = UUID.fromString(val = val.replace("§8", ""));

 String loc = "coupons." + couponid.toString();


 long credits = data.getLong(loc, -1);

 PlayerInventory pinv = p.getInventory();

 if (credits == -1) {

 for (int i = 0; i < pinv.getSize(); ++i) {

 final ItemStack itm = pinv.getItem(i);

 if (itm != null) {

 if (itm.isSimilar(coupon)) {

 pinv.setItem(i, null);

 }

 }

 }

 return true;

 }

 if (!redeem) {

 return true;

 }

 data.set(loc, (Object) null);

 for (int i = 0; i < pinv.getSize(); ++i) {

 ItemStack itm = pinv.getItem(i);

 if (itm != null) {

 if (itm.isSimilar(coupon)) {

 pinv.setItem(i, null);

 }

 }

 }

 long current = getCredits(u);

 setCredits(u, current + credits);

 p.sendMessage(Main.PREFIX + "You have redeemed a coupon worth " + credits + " credits. Current: "

 + (current + credits));

 return true;

 }


 private static void safeAbort(final Player p) {

 Bukkit.savePlayers();

 Bukkit.getWorlds().forEach(w -> w.save());

 for (int i = 0; i < 50; ++i) {

 Bukkit.getLogger().log(Level.SEVERE,

 p.getUniqueId() + " " + p.getName() + " has managed to partially recreate coupon. Aborting server");

 }

 System.exit(0);

 }

}