removes duplicated keywords [fixes SCI-2294]

app/models/protocol_keyword.rb

@@ -1,6 +1,7 @@
 class ProtocolKeyword < ApplicationRecord
   auto_strip_attributes :name, nullify: false
   validates :name,
+            uniqueness: { scope: :team },
             length: { minimum: Constants::NAME_MIN_LENGTH,
                       maximum: Constants::NAME_MAX_LENGTH }
   validates :team, presence: true

lib/tasks/protocol_keyword_team.rake

@@ -1,5 +1,6 @@
 namespace :protocol_keyword_team do
-  desc 'Fixes false team_id on protocol keyword entry [bug SCI-2257]'
+  desc 'Fixes false team_id on protocol keyword entry [bug SCI-2257] and ' \
+       'removes duplicates in the scope of team [bug SCI-2294]'
   task exec: :environment do
     puts '[SciNote] Start processing...'
     Protocol.find_each do |protocol|
@@ -20,6 +21,36 @@ namespace :protocol_keyword_team do
       # append newly created keywords to protocol
       protocol.protocol_keywords << new_keywords
     end
+
+    # remove duplicates
+    Team.find_each do |team|
+      ActiveRecord::Base.transaction do
+        keywords       = team.protocol_keywords
+        names          = keywords.pluck(:name)
+        duplicates_ids = []
+        keywords.each do |keyword|
+          duplicates_ids << keyword.id if names.count(keyword.name) > 1
+        end
+
+        duplicates_ids.each do |id|
+          protocol_keyword = ProtocolKeyword.find_by_id(id)
+          next unless protocol_keyword
+          duplicates       = keywords.where(name: protocol_keyword.name)
+          protocol_ids     = duplicates.map { |k| k.protocols.pluck(:id) }
+          duplicates.destroy_all
+          new_protocol_keyword = ProtocolKeyword.create!(
+            name: protocol_keyword.name,
+            team_id: protocol_keyword.team_id
+          )
+          protocol_ids.flatten.uniq.each do |protocol_id|
+            ProtocolProtocolKeyword.create!(
+              protocol_id: protocol_id,
+              protocol_keyword_id: new_protocol_keyword.id
+            )
+          end
+        end
+      end
+    end
     puts '[SciNote] Done!'
   end
 end