Removes some hard-coded exception strings

src/main/java/net/knarcraft/bookswithoutborders/config/StaticMessage.java

@@ -43,6 +43,11 @@ public enum StaticMessage {
             Warning! [BooksWithoutBorders] failed to initialize!
             Please confirm the correct version of [BooksWithoutBorders] is
             being run for this version of spigot!"""),
+    EXCEPTION_UNKNOWN_DIRECTORY("Unknown directory {directory}"),
+    EXCEPTION_UNEXPECTED_EXTENSION("File with unexpected extension {extension} encountered!"),
+    EXCEPTION_MIGRATE_BOOK_LOAD_FAILED("Unable to load book: {path}"),
+    EXCEPTION_META_HAS_SEPARATOR("The author; {author} or title; {title} contains the title author separator" +
+            " ({separator}). Saving this book would lead to unexpected problems."),
 
     /**
      * The cost type used to specify economy

src/main/java/net/knarcraft/bookswithoutborders/thread/MigrationQueueThread.java

@@ -1,6 +1,7 @@
 package net.knarcraft.bookswithoutborders.thread;
 
 import net.knarcraft.bookswithoutborders.BooksWithoutBorders;
+import net.knarcraft.bookswithoutborders.config.StaticMessage;
 import net.knarcraft.bookswithoutborders.config.translation.Translatable;
 import net.knarcraft.bookswithoutborders.container.EncryptedBook;
 import net.knarcraft.bookswithoutborders.container.MigrationRequest;
@@ -99,7 +100,8 @@ public class MigrationQueueThread implements Runnable {
         String extension = BookFileHelper.getExtensionFromPath(file.getName());
 
         if (!extension.equalsIgnoreCase("txt") && !extension.equalsIgnoreCase("yml")) {
-            BooksWithoutBorders.log(Level.WARNING, "File with unexpected extension " + extension + " encountered!");
+            BooksWithoutBorders.log(Level.WARNING, new FormatBuilder(StaticMessage.EXCEPTION_UNEXPECTED_EXTENSION.toString()).
+                    replace("{extension}", extension).build());
             return true;
         }
 
@@ -117,7 +119,8 @@ public class MigrationQueueThread implements Runnable {
         }
 
         if (loadedBook == null) {
-            BooksWithoutBorders.log(Level.SEVERE, "Unable to load book: " + file.getAbsolutePath());
+            BooksWithoutBorders.log(Level.SEVERE, new FormatBuilder(StaticMessage.EXCEPTION_MIGRATE_BOOK_LOAD_FAILED.toString()).
+                    replace("{path}", file.getAbsolutePath()).build());
             return false;
         }
 

src/main/java/net/knarcraft/bookswithoutborders/utility/BookHelper.java

@@ -170,9 +170,9 @@ public final class BookHelper {
 
         if (InputCleaningHelper.cleanString(bookName).contains(separator) ||
                 InputCleaningHelper.cleanString(authorName).contains(separator)) {
-            throw new IllegalArgumentException("The author; " + authorName + " or title; " + bookName +
+            throw new IllegalArgumentException(new FormatBuilder(StaticMessage.EXCEPTION_META_HAS_SEPARATOR.toString()).
-                    " contains the title author separator (" + separator + "). Saving this " +
+                    replace("{author}", authorName).replace("{title}", bookName).
-                    "book would lead to unexpected problems.");
+                    replace("{separator}", separator).build());
         }
 
         return InputCleaningHelper.cleanString(bookName + separator + authorName);

src/main/java/net/knarcraft/bookswithoutborders/utility/BookLoader.java

@@ -3,6 +3,7 @@ package net.knarcraft.bookswithoutborders.utility;
 import net.knarcraft.bookswithoutborders.BooksWithoutBorders;
 import net.knarcraft.bookswithoutborders.config.BwBConfig;
 import net.knarcraft.bookswithoutborders.config.Permission;
+import net.knarcraft.bookswithoutborders.config.StaticMessage;
 import net.knarcraft.bookswithoutborders.config.translation.Translatable;
 import net.knarcraft.bookswithoutborders.state.BookDirectory;
 import net.knarcraft.knarlib.formatting.FormatBuilder;
@@ -170,7 +171,8 @@ public final class BookLoader {
             if (folder != null) {
                 file = BookFileHelper.findBookFile(folder, fileName);
             } else {
-                BooksWithoutBorders.log(Level.WARNING, "Unknown directory " + bookDirectory);
+                BooksWithoutBorders.log(Level.WARNING, new FormatBuilder(StaticMessage.EXCEPTION_UNKNOWN_DIRECTORY.toString()).
+                        replace("{directory}", bookDirectory.toString()).build());
             }
         }
         if (file == null || !file.isFile()) {

src/main/java/net/knarcraft/bookswithoutborders/utility/EncryptionHelper.java

@@ -97,7 +97,7 @@ public final class EncryptionHelper {
             case SUBSTITUTION -> new SubstitutionCipher(EncryptionHelper.getNumberKeyFromStringKey(key));
             case AES -> {
                 if (aesConfiguration == null) {
-                    throw new IllegalArgumentException("Attempted to perform AES encryption without a valid AES configuration");
+                    throw new IllegalArgumentException(StaticMessage.EXCEPTION_AES_NO_CONFIGURATION.toString());
                 } else {
                     yield new AES(aesConfiguration);
                 }