1 files changed, 53 insertions, 0 deletions
diff --git a/app/models/abuse/user_trust_score.rb b/app/models/abuse/user_trust_score.rb
new file mode 100644
index 00000000000..3a935e230ae
--- /dev/null
+++ b/app/models/abuse/user_trust_score.rb
@@ -0,0 +1,53 @@
+# frozen_string_literal: true
+
+module Abuse
+  class UserTrustScore
+    MAX_EVENTS = 100
+    SPAMCHECK_HAM_THRESHOLD = 0.5
+
+    def initialize(user)
+      @user = user
+    end
+
+    def spammer?
+      spam_score > SPAMCHECK_HAM_THRESHOLD
+    end
+
+    def spam_score
+      user_scores.spamcheck.average(:score) || 0.0
+    end
+
+    def telesign_score
+      user_scores.telesign.order_created_at_desc.first&.score || 0.0
+    end
+
+    def arkose_global_score
+      user_scores.arkose_global_score.order_created_at_desc.first&.score || 0.0
+    end
+
+    def arkose_custom_score
+      user_scores.arkose_custom_score.order_created_at_desc.first&.score || 0.0
+    end
+
+    def trust_scores_for_source(source)
+      user_scores.where(source: source)
+    end
+
+    def remove_old_scores(source)
+      count = trust_scores_for_source(source).count
+      return unless count > MAX_EVENTS
+
+      Abuse::TrustScore.delete(
+        trust_scores_for_source(source)
+        .order_created_at_asc
+        .limit(count - MAX_EVENTS)
+      )
+    end
+
+    private
+
+    def user_scores
+      Abuse::TrustScore.where(user_id: @user.id)
+    end
+  end
+end