Added sell multipliers (#4770)

Co-authored-by: Josh Roy <10731363+JRoy@users.noreply.github.com>

Essentials/src/main/java/com/earth2me/essentials/ISettings.java

@@ -418,6 +418,8 @@ public interface ISettings extends IConf {
 
     boolean showZeroBaltop();
 
+    BigDecimal getMultiplier(final User user);
+
     int getMaxItemLore();
 
     Tag getPrimaryColor();

Essentials/src/main/java/com/earth2me/essentials/Settings.java

@@ -149,6 +149,8 @@ public class Settings implements net.ess3.api.ISettings {
     private Map<String, String> worldAliases;
     private Tag primaryColor = DEFAULT_PRIMARY_COLOR;
     private Tag secondaryColor = DEFAULT_SECONDARY_COLOR;
+    private Set<String> multiplierPerms;
+    private BigDecimal defaultMultiplier;
 
     public Settings(final IEssentials ess) {
         this.ess = ess;
@@ -921,6 +923,8 @@ public class Settings implements net.ess3.api.ISettings {
         worldAliases = _getWorldAliases();
         primaryColor = _getPrimaryColor();
         secondaryColor = _getSecondaryColor();
+        multiplierPerms = _getMultiplierPerms();
+        defaultMultiplier = _getDefaultMultiplier();
 
         reloadCount.incrementAndGet();
     }
@@ -2090,6 +2094,33 @@ public class Settings implements net.ess3.api.ISettings {
     }
 
     @Override
+    public BigDecimal getMultiplier(final User user) {
+        BigDecimal multiplier = defaultMultiplier;
+        if (multiplierPerms == null) {
+            return defaultMultiplier;
+        }
+
+        for (final String multiplierPerm : multiplierPerms) {
+            if (user.isAuthorized("essentials.sell.multiplier." + multiplierPerm)) {
+                final BigDecimal value = config.getBigDecimal("sell-multipliers." + multiplierPerm, BigDecimal.ZERO);
+                if (value.compareTo(multiplier) > 0) {
+                    multiplier = value;
+                }
+            }
+        }
+
+        return multiplier;
+    }
+
+    private BigDecimal _getDefaultMultiplier() {
+        return config.getBigDecimal("sell-multipliers.default", BigDecimal.ONE);
+    }
+
+    private Set<String> _getMultiplierPerms() {
+        final CommentedConfigurationNode section = config.getSection("sell-multipliers");
+        return section == null ? null : ConfigurateUtil.getKeys(section);
+    }
+
     public int getMaxItemLore() {
         return config.getInt("max-itemlore-lines", 10);
     }

Essentials/src/main/java/com/earth2me/essentials/commands/Commandsell.java

@@ -93,7 +93,8 @@ public class Commandsell extends EssentialsCommand {
 
     private BigDecimal sellItem(final User user, final ItemStack is, final String[] args, final boolean isBulkSell) throws Exception {
         final int amount = ess.getWorth().getAmount(ess, user, is, args, isBulkSell);
-        final BigDecimal worth = ess.getWorth().getPrice(ess, is);
+        final BigDecimal originalWorth = ess.getWorth().getPrice(ess, is);
+        final BigDecimal worth = originalWorth == null ? null : originalWorth.multiply(ess.getSettings().getMultiplier(user));
 
         if (worth == null) {
             throw new TranslatableException("itemCannotBeSold");

Essentials/src/main/java/com/earth2me/essentials/signs/SignSell.java

@@ -41,6 +41,7 @@ public class SignSell extends EssentialsSign {
                 //noinspection BigDecimalMethodWithoutRoundingCalled
                 BigDecimal pricePerSingleItem = chargeAmount.divide(new BigDecimal(initialItemAmount));
                 pricePerSingleItem = pricePerSingleItem.multiply(new BigDecimal(newItemAmount));
+                pricePerSingleItem = pricePerSingleItem.multiply(ess.getSettings().getMultiplier(player));
                 money = new Trade(pricePerSingleItem, ess);
             }
         }

Essentials/src/main/resources/config.yml

@@ -879,6 +879,15 @@ baltop-requirements:
 # For 1'234,50 use fr-ch
 #currency-symbol-format-locale: en-US
 
+# Allow players to receive multipliers for items sold with /sell or the sell sign.
+# You can set the default multiplier using the 'default' rank below.
+# To grant different multipliers to different people, you need to define a 'multiplier-rank' below.
+# Create the 'multiplier-rank' below, and give the matching permission: essentials.sell.multiplier.<multiplier-rank>
+sell-multipliers:
+  default: 1.0
+  double: 2.0
+  triple: 3.0
+
 ############################################################
 # +------------------------------------------------------+ #
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