add /prestige

src/main/java/sh/okx/rankup/requirements/OperationRegistry.java

@@ -1,15 +1,16 @@
 package sh.okx.rankup.requirements;
 
+import java.util.HashMap;
 import java.util.Map;
 
 public class OperationRegistry {
-  private Map<String, Operation> operations;
+  private Map<String, Operation> operations = new HashMap<>();
 
   public void addOperation(String name, Operation operation) {
     operations.put(name.toLowerCase(), operation);
   }
 
   public Operation getOperation(String name) {
-    return operations.get(name.toLowerCase());
+    return operations.get(name == null ? "all" : name.toLowerCase());
   }
 }

src/main/java/sh/okx/rankup/requirements/RequirementRegistry.java

@@ -1,6 +1,10 @@
 package sh.okx.rankup.requirements;
 
+import org.bukkit.configuration.ConfigurationSection;
+import org.bukkit.entity.Player;
+
 import java.util.HashSet;
+import java.util.Map;
 import java.util.Set;
 
 public class RequirementRegistry {
@@ -20,4 +24,28 @@ public class RequirementRegistry {
     }
     return null;
   }
+
+  public Set<Requirement> getRequirements(ConfigurationSection section) {
+    Set<Requirement> requirements = new HashSet<>();
+
+    for (Map.Entry<String, Object> entry : section.getValues(false).entrySet()) {
+      String name = entry.getKey();
+      String value = String.valueOf(entry.getValue());
+      Requirement requirement = newRequirement(name, value);
+      if (requirement == null) {
+        System.err.println("Unknown requirement: " + name);
+      } else {
+        requirements.add(requirement);
+      }
+    }
+    return requirements;
+  }
+
+  public void apply(Player player, Set<Requirement> requirements) {
+    for (Requirement requirement : requirements) {
+      if (requirement instanceof DeductibleRequirement) {
+        ((DeductibleRequirement) requirement).apply(player);
+      }
+    }
+  }
 }