add user job for updating table in dynamodb

app/logical/automod/update_dynamo_db_job.rb

@@ -0,0 +1,66 @@
+module Automod
+  class UpdateDynamoDbJob < Struct.new(:post_id)
+    extend Memoist
+
+    def perform
+      post = Post.find(post_id)
+      data = {
+        post_id: post_id,
+        is_approved: is_approved?(post),
+        fav_count: post.fav_count,
+        file_size: post.file_size,
+        width: post.image_width,
+        height: post.image_height,
+        tag_count: post.tag_array.size,
+        artist_identified: artist_identified?(post),
+        artist_count: artist_count(post),
+        character_identified: character_identified?(post),
+        character_count: character_count(post),
+        copyright_identified: copyright_identified?(post),
+        copyright_count: copyright_count(post),
+        translated: is_translated?(post),
+        comment_count: post.comments.count,
+        note_count: post.notes.count
+      }
+
+      dynamo_db_client.put_item(table_name: "automod_events_#{Rails.env}", item: data)
+    end
+
+    def dynamo_db_client
+      Aws::DynamoDB::Client.new(region: "us-west-1")
+    end
+    memoize :dynamo_db_client
+
+    def is_approved?(post)
+      !post.is_pending? && !post.is_deleted?
+    end
+
+    def artist_identified?(post)
+      post.tags.any? { |t| t.category == Tag.categories.artist }
+    end
+
+    def character_identified?(post)
+      post.tags.any? { |t| t.category == Tag.categories.character }
+    end
+
+    def copyright_identified?(post)
+      post.tags.any? { |t| t.category == Tag.categories.copyright }
+    end
+
+    def artist_count(post)
+      post.tags.select { |t| t.category == Tag.categories.artist }.map {|x| x.post_count}.min
+    end
+
+    def character_count(post)
+      post.tags.select { |t| t.category == Tag.categories.character }.map {|x| x.post_count}.min
+    end
+
+    def copyright_count(post)
+      post.tags.select { |t| t.category == Tag.categories.copyright }.map {|x| x.post_count}.min
+    end
+
+    def is_translated?(post)
+      post.has_tag?("translated")
+    end
+  end
+end