added 260907 version of worker toolkit

worker-toolkit-flaredown/repo/backend/app/models/reaction.rb

@@ -0,0 +1,36 @@
+class Reaction
+  include Mongoid::Document
+
+  field :value, type: String
+  field :encrypted_user_id, type: String, encrypted: {type: :integer}
+
+  validates :value, :reactable, :encrypted_user_id, presence: true
+
+  belongs_to :reactable, polymorphic: true
+
+  class << self
+    def similar_to(reaction)
+      where(
+        value: reaction.value,
+        reactable_id: reaction.reactable_id,
+        reactable_type: reaction.reactable_type
+      )
+    end
+
+    def values_count_with_participated(encrypted_user_id)
+      reactions_for_user = where(encrypted_user_id: encrypted_user_id).pluck(:value, :_id).to_h
+
+      aggregation = criteria.group(:_id => "$value", :count.sum => 1)
+      collection.aggregate(aggregation.pipeline).map do |reaction|
+        # A real ID is only required when the current user has reacted. Otherwise the value is meaningless
+        # Use a random string to try to demonstrate that
+        {
+          id: (reactions_for_user[reaction["_id"]] || SecureRandom.hex(16)).to_s,
+          value: reaction["_id"],
+          count: reaction["count"],
+          participated: reactions_for_user.key?(reaction["_id"])
+        }
+      end
+    end
+  end
+end