FEATURE: allow llm triage to automatically hide posts (#820)

Previous to this change we could flag, but there was no way
to hide content and treat the flag as spam.

We had the option to hide topics, but this is not desirable for
a spam reply.

New option allows triage to hide a post if it is a reply, if the
post happens to be the first post on the topic, the topic will
be hidden.

config/locales/client.en.yml

@@ -99,9 +99,12 @@ en:
             hide_topic:
               label: "Hide topic"
               description: "Make topic non visible to the public if triggered"
+            flag_type:
+              label: "Flag type"
+              description: "Type of flag to apply to the post (spam or simply raise for review)"
             flag_post:
-              label: "Send to review"
-              description: "Puts the post into the review queue if triggered, for moderators to triage"
+              label: "Flag post"
+              description: "Flags post (either as spam or for review)"
             model:
               label: "Model"
               description: "Language model used for triage"

config/locales/server.en.yml

@@ -1,5 +1,9 @@
 en:
   discourse_automation:
+    ai:
+      flag_types:
+        review: "Add post to review queue"
+        spam: "Flag as spam and hide post"
     scriptables:
       llm_triage:
         title: Triage posts using AI

discourse_automation/llm_triage.rb

@@ -21,6 +21,13 @@ if defined?(DiscourseAutomation)
     field :tags, component: :tags
     field :hide_topic, component: :boolean
     field :flag_post, component: :boolean
+    field :flag_type,
+          component: :choices,
+          required: false,
+          extra: {
+            content: DiscourseAi::Automation.flag_types,
+          },
+          default: "review"
     field :canned_reply, component: :message
     field :canned_reply_user, component: :user
 
@@ -41,6 +48,7 @@ if defined?(DiscourseAutomation)
       tags = fields.dig("tags", "value")
       hide_topic = fields.dig("hide_topic", "value")
       flag_post = fields.dig("flag_post", "value")
+      flag_type = fields.dig("flag_type", "value")
 
       begin
         RateLimiter.new(
@@ -68,6 +76,7 @@ if defined?(DiscourseAutomation)
           canned_reply_user: canned_reply_user,
           hide_topic: hide_topic,
           flag_post: flag_post,
+          flag_type: flag_type.to_s.to_sym,
           automation: self.automation,
         )
       rescue => e

lib/automation.rb

@@ -2,6 +2,12 @@
 
 module DiscourseAi
   module Automation
+    def self.flag_types
+      [
+        { id: "review", translated_name: I18n.t("discourse_automation.ai.flag_types.review") },
+        { id: "spam", translated_name: I18n.t("discourse_automation.ai.flag_types.spam") },
+      ]
+    end
     def self.available_models
       values = DB.query_hash(<<~SQL)
         SELECT display_name AS translated_name, id AS id

lib/automation/llm_triage.rb

@@ -14,6 +14,7 @@ module DiscourseAi
         canned_reply_user: nil,
         hide_topic: nil,
         flag_post: nil,
+        flag_type: nil,
         automation: nil
       )
         if category_id.blank? && tags.blank? && canned_reply.blank? && hide_topic.blank? &&
@@ -65,9 +66,6 @@ module DiscourseAi
           post.topic.update!(visible: false) if hide_topic
 
           if flag_post
-            reviewable =
-              ReviewablePost.needs_review!(target: post, created_by: Discourse.system_user)
-
             score_reason =
               I18n
                 .t("discourse_automation.scriptables.llm_triage.flagged_post")
@@ -75,12 +73,25 @@ module DiscourseAi
                 .sub("%%AUTOMATION_ID%%", automation&.id.to_s)
                 .sub("%%AUTOMATION_NAME%%", automation&.name.to_s)
 
-            reviewable.add_score(
-              Discourse.system_user,
-              ReviewableScore.types[:needs_approval],
-              reason: score_reason,
-              force_review: true,
-            )
+            if flag_type == :spam
+              PostActionCreator.new(
+                Discourse.system_user,
+                post,
+                PostActionType.types[:spam],
+                message: score_reason,
+                queue_for_review: true,
+              ).perform
+            else
+              reviewable =
+                ReviewablePost.needs_review!(target: post, created_by: Discourse.system_user)
+
+              reviewable.add_score(
+                Discourse.system_user,
+                ReviewableScore.types[:needs_approval],
+                reason: score_reason,
+                force_review: true,
+              )
+            end
           end
         end
       end

spec/lib/modules/automation/llm_triage_spec.rb

@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 describe DiscourseAi::Automation::LlmTriage do
   fab!(:post)
+  fab!(:reply) { Fabricate(:post, topic: post.topic, user: Fabricate(:user)) }
   fab!(:llm_model)
 
   def triage(**args)
@@ -92,6 +93,23 @@ describe DiscourseAi::Automation::LlmTriage do
     expect(reviewable.reviewable_scores.first.reason).to include("bad")
   end
 
+  it "can handle spam flags" do
+    DiscourseAi::Completions::Llm.with_prepared_responses(["bad"]) do
+      triage(
+        post: post,
+        model: "custom:#{llm_model.id}",
+        system_prompt: "test %%POST%%",
+        search_for_text: "bad",
+        flag_post: true,
+        flag_type: :spam,
+        automation: nil,
+      )
+    end
+
+    expect(post.reload).to be_hidden
+    expect(post.topic.reload.visible).to eq(false)
+  end
+
   it "can handle garbled output from LLM" do
     DiscourseAi::Completions::Llm.with_prepared_responses(["Bad.\n\nYo"]) do
       triage(