package eu.codexe.realmoneymod.bank; import net.minecraft.nbt.CompoundTag; import java.time.Instant; import java.util.ArrayList; import java.util.Collections; import java.util.List; public class BankAccount { private final String ownerId; private long cash; private long bank; private final List transactions; public BankAccount(String ownerId) { this.ownerId = ownerId; this.transactions = new ArrayList<>(); } public String ownerId() { return ownerId; } public long cash() { return cash; } public long bank() { return bank; } public List transactions() { return Collections.unmodifiableList(transactions); } public long netWorth() { return cash + bank; } public void depositCash(long amount) { if (amount <= 0 || amount > cash) { throw new IllegalArgumentException("Invalid cash withdrawal"); } cash -= amount; bank += amount; record("Transferred " + format(amount) + " to bank"); } public void withdrawCash(long amount) { if (amount <= 0 || amount > bank) { throw new IllegalArgumentException("Invalid bank withdrawal"); } bank -= amount; cash += amount; record("Withdrew " + format(amount) + " from bank"); } public void addCash(long amount) { if (amount <= 0) { throw new IllegalArgumentException("Amount must be positive"); } cash += amount; record("Received " + format(amount)); } public boolean spendCash(long amount) { if (amount <= 0 || cash < amount) { return false; } cash -= amount; record("Spent " + format(amount)); return true; } public void addBank(long amount) { if (amount <= 0) { throw new IllegalArgumentException("Amount must be positive"); } bank += amount; record("Bank deposit " + format(amount)); } public boolean spendBank(long amount) { if (amount <= 0 || bank < amount) { return false; } bank -= amount; record("Bank payment " + format(amount)); return true; } public void record(String message) { transactions.add(Instant.now().toString() + " | " + message); while (transactions.size() > 20) { transactions.remove(0); } } public CompoundTag save() { CompoundTag tag = new CompoundTag(); tag.putString("OwnerId", ownerId); tag.putLong("Cash", cash); tag.putLong("Bank", bank); for (int i = 0; i < transactions.size(); i++) { tag.putString("Tx" + i, transactions.get(i)); } tag.putInt("TxCount", transactions.size()); return tag; } public static BankAccount load(CompoundTag tag) { BankAccount account = new BankAccount(tag.getString("OwnerId")); account.cash = tag.getLong("Cash"); account.bank = tag.getLong("Bank"); int count = tag.getInt("TxCount"); for (int i = 0; i < count; i++) { account.transactions.add(tag.getString("Tx" + i)); } return account; } private String format(long amount) { return amount + " ₡"; } }

RealMoneyMod