Fixes #244

Implement 2 new placeholders.

src/main/java/world/bentobox/challenges/ChallengesAddon.java

@@ -388,6 +388,24 @@ public class ChallengesAddon extends Addon {
                 ChallengeLevel level = this.challengesManager.getLatestUnlockedLevel(user, world);
                 return level != null ? level.getUniqueId() : "";
             });
+
+        // Completed challenge count in latest level
+        this.getPlugin().getPlaceholdersManager().registerPlaceholder(gameModeAddon,
+            addonName + "_latest_level_completed_count",
+            user -> {
+                ChallengeLevel level = this.challengesManager.getLatestUnlockedLevel(user, world);
+                return String.valueOf(level != null ?
+                    this.challengesManager.getLevelCompletedChallengeCount(user, world, level) : 0);
+            });
+
+        // Uncompleted challenge count in latest level
+        this.getPlugin().getPlaceholdersManager().registerPlaceholder(gameModeAddon,
+            addonName + "_latest_level_uncompleted_count",
+            user -> {
+                ChallengeLevel level = this.challengesManager.getLatestUnlockedLevel(user, world);
+                return String.valueOf(level != null ?
+                    level.getChallenges().size() - this.challengesManager.getLevelCompletedChallengeCount(user, world, level) : 0);
+            });
     }
 
 

src/main/java/world/bentobox/challenges/ChallengesManager.java

@@ -1786,6 +1786,21 @@ public class ChallengesManager
     }
 
 
+    /**
+     * This method returns completed challenge count in given level.
+     * @param user User which should be checked
+     * @param world World where challenges are operating
+     * @param level Level which challenges must be checked.
+     * @return Number of completed challenges in given level.
+     */
+    public long getLevelCompletedChallengeCount(User user, World world, ChallengeLevel level)
+    {
+        return this.getLevelChallenges(level).stream().
+            filter(challenge -> this.getChallengeTimes(user, world, challenge) > 0).
+            count();
+    }
+
+
     // ---------------------------------------------------------------------
     // Section: Level related methods
     // ---------------------------------------------------------------------