Fix some NPEs

Author: lineargraph

src/main/java/io/github/moulberry/repo/NEUItems.java

@@ -31,6 +31,7 @@ public void reload(NEURepository repository) throws NEURepositoryException {
 
     @Nullable
     public NEUItem getItemBySkyblockId(@NEUId String itemId) {
+        if (items == null) return null;
         return items.get(itemId.toUpperCase(Locale.ROOT));
     }
 }

src/main/java/io/github/moulberry/repo/constants/Bonuses.java

@@ -21,10 +21,12 @@ public class Bonuses {
     Map<String, Map<Integer, Map<String, Float>>> bonusStats;
 
     public int getPetValue(Rarity rarity) {
+        if (petValue == null) return 0;
         return petValue.getOrDefault(rarity, 0);
     }
 
     public Map<String, Float> getPetRewards(int score) {
+        if (petRewards == null) return new HashMap<>();
         return petRewards.entrySet().stream()
                 .sorted(Comparator.comparingInt(Map.Entry::getKey))
                 .filter(it -> it.getKey() <= score)
@@ -36,6 +38,7 @@ public Map<String, Float> getPetRewards(int score) {
     }
 
     public Map<String, Float> getAccumulativeLevelingRewards(String name, int level) {
+        if (bonusStats == null) return new HashMap<>();
         Map<Integer, Map<String, Float>> rewardTiers = bonusStats.getOrDefault(name, new HashMap<>());
         Map<String, Float> rewards = new HashMap<>();
         Map<String, Float> currentBonuses = new HashMap<>();

src/main/java/io/github/moulberry/repo/constants/Enchants.java

@@ -22,10 +22,12 @@ public class Enchants {
     Map<String, List<Integer>> enchantExperienceCost;
 
     public List<String> getAvailableEnchants(String tooltype) {
+        if (availableEnchants == null) return null;
         return availableEnchants.get(tooltype);
     }
 
     public List<String> getConflictingEnchants(String enchant) {
+        if (enchantPools == null) return new ArrayList<>();
         List<String> conflicts = new ArrayList<>();
         for (List<String> enchantPool : enchantPools) {
             if (enchantPool.contains(enchant)) {

src/main/java/io/github/moulberry/repo/constants/Parents.java

@@ -12,6 +12,7 @@ public class Parents {
 
     public Parents(Map<String, List<String>> parents) {
         this.parents = parents;
+        if (parents == null) return;
         for (Map.Entry<String, List<String>> parentings : parents.entrySet()) {
             String parent = parentings.getKey();
             for (String child : parentings.getValue()) {
@@ -21,10 +22,12 @@ public Parents(Map<String, List<String>> parents) {
     }
 
     public List<String> getChildren(String itemId) {
+        if (reverseParents == null) return new ArrayList<>();
         return parents.getOrDefault(itemId, new ArrayList<>());
     }
 
     public Optional<String> getParent(String itemId) {
+        if (reverseParents == null) return Optional.empty();
         return reverseParents.containsKey(itemId)
                 ? Optional.of(reverseParents.get(itemId))
                 : Optional.empty();