243 lines
9.1 KiB
Java
243 lines
9.1 KiB
Java
package org.appledash.saneeconomy.economy;
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import org.appledash.saneeconomy.ISaneEconomy;
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import org.appledash.saneeconomy.SaneEconomy;
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import org.appledash.saneeconomy.economy.backend.EconomyStorageBackend;
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import org.appledash.saneeconomy.economy.economable.Economable;
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import org.appledash.saneeconomy.economy.economable.EconomableConsole;
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import org.appledash.saneeconomy.economy.transaction.Transaction;
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import org.appledash.saneeconomy.economy.transaction.TransactionResult;
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import org.appledash.saneeconomy.event.SaneEconomyTransactionEvent;
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import org.appledash.saneeconomy.utils.MapUtil;
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import org.appledash.saneeconomy.utils.NumberUtils;
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import org.bukkit.Bukkit;
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import org.bukkit.OfflinePlayer;
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import java.math.BigDecimal;
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import java.util.LinkedHashMap;
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import java.util.Map;
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import java.util.concurrent.*;
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/**
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* Created by AppleDash on 6/13/2016.
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* Blackjack is still best pony.
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*
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* Represents our EconomyManager, which manages players' balances.
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*/
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public class EconomyManager {
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private final ISaneEconomy saneEconomy;
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private final Currency currency;
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private final EconomyStorageBackend backend;
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private final String serverAccountName;
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private static final BigDecimal REQUIRED_BALANCE_ACCURACY = new BigDecimal("0.0001");
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public EconomyManager(ISaneEconomy saneEconomy, Currency currency, EconomyStorageBackend backend, String serverAccountName) {
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this.saneEconomy = saneEconomy;
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this.currency = currency;
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this.backend = backend;
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this.serverAccountName = serverAccountName;
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}
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/**
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* Get the Currency we're using/
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* @return Currency
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*/
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public Currency getCurrency() {
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return this.currency;
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}
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/**
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* Get the balance of a player, formatted according to our Currency's format.
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* @param player Player
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* @return Formatted balance
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*/
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public String getFormattedBalance(Economable player) {
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return this.currency.formatAmount(this.backend.getBalance(player));
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}
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/**
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* Check whether a player has used the economy system before.
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* @param player Player to check
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* @return True if they have used the economy system before, false otherwise
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*/
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public boolean accountExists(Economable player) {
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return this.backend.accountExists(player);
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}
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/**
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* Get a player's balance.
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* @param targetPlayer Player to get balance of
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* @return Player's balance
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*/
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public BigDecimal getBalance(Economable targetPlayer) {
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if (EconomableConsole.isConsole(targetPlayer)) {
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return new BigDecimal(Double.MAX_VALUE);
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}
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return this.backend.getBalance(targetPlayer);
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}
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/**
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* Check if a player has a certain amount of money.
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* @param targetPlayer Player to check balance of
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* @param requiredBalance How much money we're checking for
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* @return True if they have requiredBalance or more, false otherwise
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*/
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public boolean hasBalance(Economable targetPlayer, BigDecimal requiredBalance) {
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return (EconomableConsole.isConsole(targetPlayer)) || (hasBalance(this.getBalance(targetPlayer), requiredBalance));
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}
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/**
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* Compare account balance and required balance to a reasonable degree of accuracy. <br>
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* <b>Visible for testing</b>
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*
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* @param accountBalance account balance
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* @param requiredBalance required balance
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* @return true if the account has the required balance to some degree of accuracy, false otherwise
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*/
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public boolean hasBalance(BigDecimal accountBalance, BigDecimal requiredBalance) {
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if (accountBalance.compareTo(requiredBalance) >= 0) {
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return true;
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}
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// Must compare to degree of accuracy
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// See https://github.com/AppleDash/SaneEconomy/issues/100
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BigDecimal difference = requiredBalance.subtract(accountBalance);
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return difference.compareTo(REQUIRED_BALANCE_ACCURACY) < 0; // difference < PRECISION
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}
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/**
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* Add to a player's balance.
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* This does not filter the amount.
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* @param targetPlayer Player to add to
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* @param amount Amount to add
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* @throws IllegalArgumentException If amount is negative
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*/
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private void addBalance(Economable targetPlayer, BigDecimal amount) {
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this.setBalance(targetPlayer, this.backend.getBalance(targetPlayer).add(amount));
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}
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/**
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* Subtract from a player's balance.
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* If the subtraction would result in a negative balance, the balance is instead set to 0.
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* This does not filter the amount.
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*
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* @param targetPlayer Player to subtract from
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* @param amount Amount to subtract
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* @throws IllegalArgumentException If amount is negative
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*/
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private void subtractBalance(Economable targetPlayer, BigDecimal amount) {
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// Ensure we don't go negative.
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this.setBalance(targetPlayer, this.backend.getBalance(targetPlayer).subtract(amount).max(BigDecimal.ZERO));
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}
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/**
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* Set a player's balance. This does NOT log.
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* @param targetPlayer Player to set balance of
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* @param amount Amount to set balance to
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* @throws IllegalArgumentException If amount is negative
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*/
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public void setBalance(Economable targetPlayer, BigDecimal amount) {
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amount = NumberUtils.filterAmount(this.currency, amount);
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if (EconomableConsole.isConsole(targetPlayer)) {
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return;
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}
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this.backend.setBalance(targetPlayer, amount);
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}
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/**
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* Perform a transaction - a transfer of funds from one entity to another.
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* @param transaction Transaction to perform.
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* @return TransactionResult describing success or failure of the Transaction.
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*/
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public TransactionResult transact(Transaction transaction) {
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Economable sender = transaction.getSender();
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Economable receiver = transaction.getReceiver();
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BigDecimal amount = transaction.getAmount(); // This amount is validated and filtered upon creation of Transaction
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if (Bukkit.getServer().getPluginManager() != null) { // Bukkit.getServer().getPluginManager() == null from our JUnit tests.
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SaneEconomyTransactionEvent evt = new SaneEconomyTransactionEvent(transaction);
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if (Bukkit.isPrimaryThread()) {
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Bukkit.getServer().getPluginManager().callEvent(evt);
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if (evt.isCancelled()) {
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return new TransactionResult(transaction, TransactionResult.Status.CANCELLED_BY_PLUGIN);
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}
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} else {
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Future<SaneEconomyTransactionEvent> future = Bukkit.getServer().getScheduler().callSyncMethod(SaneEconomy.getInstance(), () -> {
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Bukkit.getServer().getPluginManager().callEvent(evt);
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return evt;
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});
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try {
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if (future.get().isCancelled()) {
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return new TransactionResult(transaction, TransactionResult.Status.CANCELLED_BY_PLUGIN);
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}
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} catch (InterruptedException | ExecutionException e) {
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throw new RuntimeException(e);
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}
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}
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/*
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Bukkit.getServer().getPluginManager().callEvent(evt);
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if (evt.isCancelled()) {
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return new TransactionResult(transaction, TransactionResult.Status.CANCELLED_BY_PLUGIN);
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}*/
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}
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if (transaction.isSenderAffected()) { // Sender should have balance taken from them
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if (!this.hasBalance(sender, amount)) {
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return new TransactionResult(transaction, TransactionResult.Status.ERR_NOT_ENOUGH_FUNDS);
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}
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this.subtractBalance(sender, amount);
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}
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if (transaction.isReceiverAffected()) { // Receiver should have balance added to them
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this.addBalance(receiver, amount);
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}
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this.saneEconomy.getTransactionLogger().ifPresent((logger) -> logger.logTransaction(transaction));
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return new TransactionResult(transaction, this.getBalance(sender), this.getBalance(receiver));
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}
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/**
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* Get the players who have the most money.
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* @param amount Maximum number of players to show.
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* @return Map of OfflinePlayer to Double
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*/
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public Map<String, BigDecimal> getTopBalances(int amount, int offset) {
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LinkedHashMap<String, BigDecimal> playerNamesToBalances = this.backend.getTopBalances();
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/*uuidBalances.re((uuid, balance) -> {
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String playerName = this.backend.getLastName(uuid);
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if (playerName != null) {
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if ((this.saneEconomy.getVaultHook() == null) || !this.saneEconomy.getVaultHook().hasPermission(offlinePlayer, "saneeconomy.balancetop.hide")) {
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playerBalances.put(Bukkit.getServer().getOfflinePlayer(uuid), balance);
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}
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}
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});*/
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return MapUtil.skipAndTake(playerNamesToBalances, offset, amount);
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}
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public EconomyStorageBackend getBackend() {
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return this.backend;
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}
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/**
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* Get the name of the "Server" economy account. This account has an infinite balance and deposits do nothing.
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* @return Server economy account, or null if none.
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*/
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public String getServerAccountName() {
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return this.serverAccountName;
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}
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}
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