balance changes

src/main/java/com/github/kaktushose/nplaybot/rank/model/UserInfo.java

@@ -57,12 +57,6 @@ private String getBonusXp(int karma) {
         if (karma < 0) {
             return "(-1 PLAY-Punkte)";
         }
-        if (karma >= 300) {
-            return "(+3 PLAY-Punkte)";
-        }
-        if (karma >= 200) {
-            return "(+2 PLAY-Punkte)";
-        }
         if (karma >= 100) {
             return "(+1 PLAY-Punkte)";
         }

src/main/resources/db/migration/V1.0.3__patch_balance.sql

@@ -0,0 +1,23 @@
+CREATE FUNCTION add_random_xp(id BIGINT)
+RETURNS TABLE (rank_changed BOOLEAN, previous_rank int, current_rank int, next_rank INT, current_xp INT) AS
+$$
+DECLARE
+	xp INT;
+	bonus_xp INT;
+	karma INT;
+BEGIN
+   SELECT get_random_xp INTO xp FROM get_random_xp();
+	SELECT users.karma_points INTO karma FROM users WHERE users.user_id = id;
+	bonus_xp := 0;
+	IF karma < 0 THEN
+		bonus_xp := -1;
+	ELSIF karma >= 100 THEN
+		bonus_xp := 1;
+	END IF;
+	IF (SELECT EXISTS(SELECT 1 FROM transactions JOIN items ON transactions.item_id = items.item_id WHERE transactions.user_id=id AND type_id = 1)) THEN
+	    bonus_xp := bonus_xp + 1;
+	END IF;
+	SELECT INTO rank_changed, previous_rank, current_rank, next_rank, current_xp * FROM add_xp(id, xp + bonus_xp);
+	RETURN NEXT;
+END;
+$$ LANGUAGE plpgsql;