Move random methods to random util class, fix footer

src/main/java/wtf/beatrice/hidekobot/Cache.java

@@ -1,7 +1,6 @@
 package wtf.beatrice.hidekobot;
 
 import org.jetbrains.annotations.Nullable;
-import org.random.util.RandomOrgRandom;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import wtf.beatrice.hidekobot.datasources.ConfigurationEntry;
@@ -15,10 +14,8 @@ import wtf.beatrice.hidekobot.listeners.SlashCommandListener;
 
 import java.awt.*;
 import java.lang.reflect.Field;
-import java.security.SecureRandom;
 import java.time.LocalDateTime;
 import java.util.HashMap;
-import java.util.Random;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledExecutorService;
 
@@ -30,10 +27,6 @@ public class Cache
     private static final String botPrefix = "hideko";
     private static final Logger LOGGER = LoggerFactory.getLogger(Cache.class);
 
-    // the Random instance that we should always use when looking for an RNG based thing.
-    // the seed is updated periodically.
-    private static Random randomInstance = new SecureRandom();
-
     // map to store results of "love calculator", to avoid people re-running the same command until
     // they get what they wanted.
     // i didn't think this was worthy of a whole database table with a runnable checking for expiration,
@@ -83,27 +76,6 @@ public class Cache
      */
     public static int[] getSupportedAvatarResolutions() { return supportedAvatarResolutions; }
 
-    public static Random getRandom() {
-        return randomInstance;
-    }
-
-    public static void initRandomOrg(String apiKey)
-    {
-        /* we use the random.org instance to generate 160 random bytes.
-        then, we're feeding those 160 bytes as a seed for a SecureRandom.
-
-        this is preferred to calling the RandomOrgRandom directly every time,
-        because it has to query the api and (1) takes a long time, especially with big
-        dice rolls, and (2) you'd run in the limits extremely quickly if the bot
-        was run publicly for everyone to use.
-         */
-
-        RandomOrgRandom randomOrg = new RandomOrgRandom(apiKey);
-        byte[] randomBytes = new byte[160];
-        randomOrg.nextBytes(randomBytes);
-
-        randomInstance = new SecureRandom(randomBytes);
-    }
 
     /**
      * Checks if the bot has been started with the verbose argument.
@@ -158,9 +130,6 @@ public class Cache
         return configurationSource == null ? null : (String) configurationSource.getConfigValue(ConfigurationEntry.BOT_TOKEN);
     }
 
-    public static String getRandomOrgApiKey() {
-        return configurationSource == null ? null : (String) configurationSource.getConfigValue(ConfigurationEntry.RANDOM_ORG_API_KEY);
-    }
 
     /**
      * Get the bot maintainer's profile id.
@@ -320,6 +289,10 @@ public class Cache
     /*private static ConfigurationSource getConfigurationSource()
     { return configurationSource; }*/
 
+    public static String getRandomOrgApiKey() {
+        return configurationSource == null ? null : (String) configurationSource.getConfigValue(ConfigurationEntry.RANDOM_ORG_API_KEY);
+    }
+
     public static void setConfigurationSource(ConfigurationSource configurationSource)
     { Cache.configurationSource = configurationSource; }
 

src/main/java/wtf/beatrice/hidekobot/HidekoBot.java

@@ -10,7 +10,6 @@ import sun.misc.Signal;
 import wtf.beatrice.hidekobot.commands.completer.ProfileImageCommandCompleter;
 import wtf.beatrice.hidekobot.commands.message.HelloCommand;
 import wtf.beatrice.hidekobot.commands.slash.*;
-import wtf.beatrice.hidekobot.datasources.ConfigurationEntry;
 import wtf.beatrice.hidekobot.datasources.ConfigurationSource;
 import wtf.beatrice.hidekobot.datasources.DatabaseSource;
 import wtf.beatrice.hidekobot.datasources.PropertiesSource;
@@ -21,6 +20,7 @@ import wtf.beatrice.hidekobot.runnables.RandomOrgSeedTask;
 import wtf.beatrice.hidekobot.runnables.StatusUpdateTask;
 import wtf.beatrice.hidekobot.util.CommandUtil;
 import wtf.beatrice.hidekobot.util.FormatUtil;
+import wtf.beatrice.hidekobot.util.RandomUtil;
 
 import java.io.File;
 import java.time.LocalDateTime;
@@ -113,13 +113,10 @@ public class HidekoBot
         boolean enableRandomSeedUpdaterTask = false;
         // initialize random.org object if API key is provided
         {
-            String apiKey = Cache.getRandomOrgApiKey();
-            if(apiKey != null &&
-                    !apiKey.isEmpty() &&
-                    !apiKey.equals(ConfigurationEntry.RANDOM_ORG_API_KEY.getDefaultValue()))
+            if(RandomUtil.isRandomOrgKeyValid())
             {
                 LOGGER.info("Enabling Random.org integration... This might take a while!");
-                Cache.initRandomOrg(apiKey);
+                RandomUtil.initRandomOrg();
                 enableRandomSeedUpdaterTask = true;
                 LOGGER.info("Random.org integration enabled!");
             }

src/main/java/wtf/beatrice/hidekobot/commands/base/DiceRoll.java

@@ -2,10 +2,10 @@ package wtf.beatrice.hidekobot.commands.base;
 
 import net.dv8tion.jda.api.EmbedBuilder;
 import net.dv8tion.jda.api.entities.User;
-import org.random.util.RandomOrgRandom;
 import wtf.beatrice.hidekobot.Cache;
 import wtf.beatrice.hidekobot.objects.MessageResponse;
 import wtf.beatrice.hidekobot.objects.fun.Dice;
+import wtf.beatrice.hidekobot.util.RandomUtil;
 
 import java.util.LinkedHashMap;
 import java.util.LinkedList;
@@ -126,8 +126,8 @@ public class DiceRoll
         embedBuilder.setAuthor(author.getAsTag(), null, author.getAvatarUrl());
         embedBuilder.setTitle("Dice Roll");
 
-        if(Cache.getRandom() instanceof RandomOrgRandom)
-            embedBuilder.setFooter("Seed provided by Random.org");
+        if(RandomUtil.isRandomOrgKeyValid())
+            embedBuilder.setFooter("Seed provided by random.org");
 
         StringBuilder message = new StringBuilder();
         int total = 0;

src/main/java/wtf/beatrice/hidekobot/runnables/RandomOrgSeedTask.java

@@ -3,7 +3,7 @@ package wtf.beatrice.hidekobot.runnables;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import wtf.beatrice.hidekobot.Cache;
-import wtf.beatrice.hidekobot.datasources.ConfigurationEntry;
+import wtf.beatrice.hidekobot.util.RandomUtil;
 
 /**
  * This runnable pulls a random seed from random.org and used it to feed a SecureRandom,
@@ -21,12 +21,10 @@ public class RandomOrgSeedTask implements Runnable
     public void run()
     {
         String apiKey = Cache.getRandomOrgApiKey();
-        if(apiKey != null &&
-                !apiKey.isEmpty() &&
-                !apiKey.equals(ConfigurationEntry.RANDOM_ORG_API_KEY.getDefaultValue()))
+        if(RandomUtil.isRandomOrgKeyValid())
         {
             if(Cache.isVerbose()) LOGGER.info("Updating Random seed from random.org...");
-            Cache.initRandomOrg(Cache.getRandomOrgApiKey());
+            RandomUtil.initRandomOrg();
             if(Cache.isVerbose()) LOGGER.info("Random.org seed updated!");
         }
     }

src/main/java/wtf/beatrice/hidekobot/util/RandomUtil.java

@@ -1,9 +1,19 @@
 package wtf.beatrice.hidekobot.util;
 
+import org.random.util.RandomOrgRandom;
 import wtf.beatrice.hidekobot.Cache;
+import wtf.beatrice.hidekobot.datasources.ConfigurationEntry;
+
+import java.security.SecureRandom;
+import java.util.Random;
 
 public class RandomUtil
 {
+
+    // the Random instance that we should always use when looking for an RNG based thing.
+    // the seed is updated periodically, if the random.org integration is enabled.
+    private static Random randomInstance = new SecureRandom();
+
     /**
      * Returns a random integer picked in a range.
      *
@@ -26,9 +36,43 @@ public class RandomUtil
         int difference = (max - min) + 1;
 
         // find a number between 0 and our range (eg. 5 -> 8 = 0 -> 3)
-        int randomTemp = Cache.getRandom().nextInt(difference);
+        int randomTemp = getRandom().nextInt(difference);
 
         // add the minimum value, so we are sure to be in the original range (0->5, 1->6, 2->7, 3->8)
         return randomTemp + min;
     }
+
+
+    public static Random getRandom() {
+        return randomInstance;
+    }
+
+    public static void initRandomOrg()
+    {
+        /* we use the random.org instance to generate 160 random bytes.
+        then, we're feeding those 160 bytes as a seed for a SecureRandom.
+
+        this is preferred to calling the RandomOrgRandom directly every time,
+        because it has to query the api and (1) takes a long time, especially with big
+        dice rolls, and (2) you'd run in the limits extremely quickly if the bot
+        was run publicly for everyone to use.
+         */
+        String apiKey = Cache.getRandomOrgApiKey();
+
+        RandomOrgRandom randomOrg = new RandomOrgRandom(apiKey);
+        byte[] randomBytes = new byte[160];
+        randomOrg.nextBytes(randomBytes);
+
+        randomInstance = new SecureRandom(randomBytes);
+    }
+
+
+    public static boolean isRandomOrgKeyValid()
+    {
+        String apiKey = Cache.getRandomOrgApiKey();
+
+        return apiKey != null &&
+                !apiKey.isEmpty() &&
+                !apiKey.equals(ConfigurationEntry.RANDOM_ORG_API_KEY.getDefaultValue());
+    }
 }