Support decapitation victory condition and have fallback for future

Author: Brutus5000

api/src/main/java/com/faforever/commons/api/dto/VictoryCondition.java

@@ -1,40 +1,16 @@
 package com.faforever.commons.api.dto;
 
+import com.fasterxml.jackson.annotation.JsonEnumDefaultValue;
 import lombok.AllArgsConstructor;
-import lombok.Getter;
-import lombok.extern.slf4j.Slf4j;
 
-import java.util.HashMap;
-import java.util.Map;
-
-@Slf4j
-@Getter
 @AllArgsConstructor
 public enum VictoryCondition {
-    // Order is crucial
-    DEMORALIZATION(0),
-    DOMINATION(1),
-    ERADICATION(2),
-    SANDBOX(3),
-    UNKNOWN("unknown");
-
-    private static final Map<Object, VictoryCondition> fromNumber;
-
-    static {
-        fromNumber = new HashMap<>();
-        for (VictoryCondition victoryCondition : values()) {
-            fromNumber.put(victoryCondition.value, victoryCondition);
-        }
-    }
-
-    private final Object value;
-
-    public static VictoryCondition fromNumber(Object number) {
-        VictoryCondition victoryCondition = fromNumber.get(number);
-        if (victoryCondition == null) {
-            log.warn("Unknown victory condition: {}", number);
-            return UNKNOWN;
-        }
-        return victoryCondition;
-    }
+  // Order is crucial
+  DEMORALIZATION,
+  DOMINATION,
+  ERADICATION,
+  SANDBOX,
+  DECAPITATION,
+  @JsonEnumDefaultValue
+  UNKNOWN;
 }