From ad5f17481c37ffc7ed51d2ea0c5c2942acca31ea Mon Sep 17 00:00:00 2001
From: Alex <63587318+alexanderdidio@users.noreply.github.com>
Date: Tue, 8 Aug 2023 14:05:30 -0700
Subject: [PATCH] Add abbreviation support to /pay command (#5457)

Co-authored-by: Josh Roy <10731363+JRoy@users.noreply.github.com>
---
 .../essentials/commands/Commandpay.java       | 39 +++++++++++++++++--
 1 file changed, 35 insertions(+), 4 deletions(-)

diff --git a/Essentials/src/main/java/com/earth2me/essentials/commands/Commandpay.java b/Essentials/src/main/java/com/earth2me/essentials/commands/Commandpay.java
index ecc6a4207..444f80e77 100644
--- a/Essentials/src/main/java/com/earth2me/essentials/commands/Commandpay.java
+++ b/Essentials/src/main/java/com/earth2me/essentials/commands/Commandpay.java
@@ -18,6 +18,11 @@ import java.util.concurrent.atomic.AtomicBoolean;
 import static com.earth2me.essentials.I18n.tl;
 
 public class Commandpay extends EssentialsLoopCommand {
+    private static final BigDecimal THOUSAND = new BigDecimal(1000);
+    private static final BigDecimal MILLION = new BigDecimal(1_000_000);
+    private static final BigDecimal BILLION = new BigDecimal(1_000_000_000);
+    private static final BigDecimal TRILLION = new BigDecimal(1_000_000_000_000L);
+
     public Commandpay() {
         super("pay");
     }
@@ -28,17 +33,43 @@ public class Commandpay extends EssentialsLoopCommand {
             throw new NotEnoughArgumentsException();
         }
 
-        if (args[1].contains("-")) {
+        final String ogStr = args[1];
+
+        if (ogStr.contains("-")) {
             throw new Exception(tl("payMustBePositive"));
         }
 
-        final String stringAmount = args[1].replaceAll("[^0-9\\.]", "");
+        final String sanitizedString = ogStr.replaceAll("[^0-9.]", "");
 
-        if (stringAmount.length() < 1) {
+        if (sanitizedString.isEmpty()) {
             throw new NotEnoughArgumentsException();
         }
 
-        final BigDecimal amount = new BigDecimal(stringAmount);
+        BigDecimal tempAmount = new BigDecimal(sanitizedString);
+        switch (Character.toLowerCase(ogStr.charAt(ogStr.length() - 1))) {
+            case 'k': {
+                tempAmount = tempAmount.multiply(THOUSAND);
+                break;
+            }
+            case 'm': {
+                tempAmount = tempAmount.multiply(MILLION);
+                break;
+            }
+            case 'b': {
+                tempAmount = tempAmount.multiply(BILLION);
+                break;
+            }
+            case 't': {
+                tempAmount = tempAmount.multiply(TRILLION);
+                break;
+            }
+            default: {
+                break;
+            }
+        }
+
+        final BigDecimal amount = tempAmount;
+
         if (amount.compareTo(ess.getSettings().getMinimumPayAmount()) < 0) { // Check if amount is less than minimum-pay-amount
             throw new Exception(tl("minimumPayAmount", NumberUtil.displayCurrencyExactly(ess.getSettings().getMinimumPayAmount(), ess)));
         }