diff --git a/.rubocop.yml b/.rubocop.yml
index b7f7ab9..05ea57b 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -14,6 +14,18 @@ AllCops:
 Documentation:
   Enabled: false
 
+Style/StringLiterals:
+  Exclude:
+    - 'config/application.rb'
+    - 'config/boot.rb'
+    - 'config/environments/*'
+    - 'config/environment.rb'
+    - 'config/initializers/backtrace_silencers.rb'
+    - 'config.ru'
+
+RSpec/NestedGroups:
+  Max: 4
+
 Metrics/LineLength:
   Max: 130
 
@@ -29,13 +41,5 @@ Metrics/BlockLength:
     - post
     - delete
 
-Style/NumericPredicate:
-  Exclude:
-    - spec/**/*
-
-Style/HashSyntax:
-  Enabled: true
-  EnforcedStyle: ruby19
-
 Metrics/AbcSize:
   Max: 30
diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index c91ccd1..df5b769 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -1,149 +1,36 @@
 # This configuration was generated by
 # `rubocop --auto-gen-config`
-# on 2021-10-23 16:16:34 UTC using RuboCop version 1.22.2.
+# on 2024-01-20 09:54:15 UTC using RuboCop version 1.60.1.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new
 # versions of RuboCop, may require this file to be generated again.
 
-# Offense count: 2
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, IndentationWidth.
-# SupportedStyles: with_first_argument, with_fixed_indentation
-Layout/ArgumentAlignment:
-  Exclude:
-    - 'spec/processors/message_processor/eightball_spec.rb'
-
 # Offense count: 1
-# Cop supports --auto-correct.
-Layout/EmptyLineAfterGuardClause:
+# Configuration parameters: AllowedMethods, AllowedPatterns, CountRepeatedAttributes, Max.
+Metrics/AbcSize:
   Exclude:
     - 'app/models/pair.rb'
 
-# Offense count: 4
-# Cop supports --auto-correct.
-Layout/EmptyLines:
-  Exclude:
-    - 'config/application.rb'
-    - 'config/environments/development.rb'
-    - 'spec/models/pair_spec.rb'
-
-# Offense count: 3
-# Cop supports --auto-correct.
-# Configuration parameters: AllowForAlignment, AllowBeforeTrailingComments, ForceEqualSignAlignment.
-Layout/ExtraSpacing:
-  Exclude:
-    - 'config/environments/production.rb'
-    - 'db/migrate/20170816162384_create_singles.rb'
-    - 'db/migrate/20210925130635_remove_urls_and_singles.rb'
-
-# Offense count: 1
-# Cop supports --auto-correct.
-Layout/LeadingEmptyLines:
-  Exclude:
-    - 'spec/rails_helper.rb'
-
-# Offense count: 4
-# Cop supports --auto-correct.
-# Configuration parameters: AllowHeredoc, AllowURI, URISchemes, IgnoreCopDirectives, IgnoredPatterns.
-# URISchemes: http, https
-Layout/LineLength:
-  Max: 133
-
-# Offense count: 1
-# Cop supports --auto-correct.
-# Configuration parameters: AllowForAlignment, EnforcedStyleForExponentOperator.
-# SupportedStylesForExponentOperator: space, no_space
-Layout/SpaceAroundOperators:
-  Exclude:
-    - 'config/environments/production.rb'
-
-# Offense count: 1
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBraces.
-# SupportedStyles: space, no_space
-# SupportedStylesForEmptyBraces: space, no_space
-Layout/SpaceBeforeBlockBraces:
-  Exclude:
-    - 'spec/models/pair_spec.rb'
-
-# Offense count: 10
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBrackets.
-# SupportedStyles: space, no_space, compact
-# SupportedStylesForEmptyBrackets: space, no_space
-Layout/SpaceInsideArrayLiteralBrackets:
-  Exclude:
-    - 'config/environments/production.rb'
-    - 'db/migrate/20170815155843_create_pairs.rb'
-    - 'db/migrate/20170816162384_create_singles.rb'
-    - 'db/migrate/20171104065321_create_data_banks.rb'
-
-# Offense count: 6
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBraces, SpaceBeforeBlockParameters.
-# SupportedStyles: space, no_space
-# SupportedStylesForEmptyBraces: space, no_space
-Layout/SpaceInsideBlockBraces:
-  Exclude:
-    - 'lib/tasks/databank.rake'
-    - 'spec/models/pair_spec.rb'
-    - 'spec/processors/message_processor/me_spec.rb'
-
 # Offense count: 1
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBraces.
-# SupportedStyles: space, no_space, compact
-# SupportedStylesForEmptyBraces: space, no_space
-Layout/SpaceInsideHashLiteralBraces:
-  Exclude:
-    - 'app/models/word.rb'
-
-# Offense count: 1
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle.
-# SupportedStyles: space, compact, no_space
-Layout/SpaceInsideParens:
-  Exclude:
-    - 'db/migrate/20171028053628_remove_one_world_sentences.rb'
-
-# Offense count: 1
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle.
-# SupportedStyles: final_newline, final_blank_line
-Layout/TrailingEmptyLines:
-  Exclude:
-    - 'config/application.rb'
-
-# Offense count: 3
-# Cop supports --auto-correct.
-# Configuration parameters: IgnoreEmptyBlocks, AllowUnusedKeywordArguments.
-Lint/UnusedBlockArgument:
+# Configuration parameters: CountComments, Max, CountAsOne, AllowedMethods, AllowedPatterns, inherit_mode.
+# AllowedMethods: refine
+Metrics/BlockLength:
   Exclude:
-    - 'lib/tasks/databank.rake'
-
-# Offense count: 1
-# Configuration parameters: IgnoredMethods, CountRepeatedAttributes.
-Metrics/AbcSize:
-  Max: 36
+    - 'lib/tasks/database.rake'
 
 # Offense count: 3
-# Configuration parameters: CountComments, CountAsOne, ExcludedMethods, IgnoredMethods.
-Metrics/BlockLength:
-  Max: 127
-
-# Offense count: 2
-# Configuration parameters: IgnoredMethods.
+# Configuration parameters: AllowedMethods, AllowedPatterns.
 Metrics/CyclomaticComplexity:
   Max: 9
 
-# Offense count: 6
-# Configuration parameters: CountComments, CountAsOne, ExcludedMethods, IgnoredMethods.
+# Offense count: 13
+# Configuration parameters: CountComments, CountAsOne, AllowedMethods, AllowedPatterns.
 Metrics/MethodLength:
   Max: 23
 
-# Offense count: 1
-# Configuration parameters: IgnoredMethods.
+# Offense count: 2
+# Configuration parameters: AllowedMethods, AllowedPatterns.
 Metrics/PerceivedComplexity:
   Max: 9
 
@@ -152,22 +39,13 @@ Naming/AccessorMethodName:
   Exclude:
     - 'spec/support/web_mocks/telegram.rb'
 
-# Offense count: 5
-# Cop supports --auto-correct.
-# Configuration parameters: SkipBlocks, EnforcedStyle.
-# SupportedStyles: described_class, explicit
-RSpec/DescribedClass:
-  Exclude:
-    - 'spec/models/pair_spec.rb'
-    - 'spec/models/word_spec.rb'
-
 # Offense count: 4
 # Configuration parameters: CountAsOne.
 RSpec/ExampleLength:
-  Max: 9
+  Max: 11
 
 # Offense count: 7
-# Cop supports --auto-correct.
+# This cop supports safe autocorrection (--autocorrect).
 # Configuration parameters: Include.
 # Include: spec/factories.rb, spec/factories/**/*.rb, features/support/factories/**/*.rb
 RSpec/FactoryBot/FactoryClassName:
@@ -180,14 +58,12 @@ RSpec/FactoryBot/FactoryClassName:
     - 'spec/factories/telegram/user.rb'
     - 'spec/factories/user.rb'
 
-# Offense count: 4
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle.
-# SupportedStyles: is_expected, should
-RSpec/ImplicitExpect:
+# Offense count: 1
+# Configuration parameters: Include, CustomTransform, IgnoreMethods, SpecSuffixOnly.
+# Include: **/*_spec*rb*, **/spec/**/*
+RSpec/FilePath:
   Exclude:
-    - 'spec/models/pair_spec.rb'
-    - 'spec/models/user_spec.rb'
+    - 'spec/processors/concerns/processor_spec.rb'
 
 # Offense count: 7
 RSpec/MessageChain:
@@ -202,19 +78,13 @@ RSpec/MessageChain:
 RSpec/MultipleExpectations:
   Max: 3
 
-# Offense count: 46
+# Offense count: 75
 # Configuration parameters: AllowSubject.
 RSpec/MultipleMemoizedHelpers:
   Max: 13
 
-# Offense count: 4
-RSpec/RepeatedExample:
-  Exclude:
-    - 'spec/processors/message_processor/start_spec.rb'
-    - 'spec/processors/message_processor/stop_spec.rb'
-
 # Offense count: 7
-# Cop supports --auto-correct.
+# This cop supports safe autocorrection (--autocorrect).
 RSpec/SingleArgumentMessageChain:
   Exclude:
     - 'spec/controllers/webhooks_controller_spec.rb'
@@ -228,21 +98,6 @@ RSpec/StubbedMock:
   Exclude:
     - 'spec/processors/update_processor_spec.rb'
 
-# Offense count: 3
-# Cop supports --auto-correct.
-# Configuration parameters: NilOrEmpty, NotPresent, UnlessPresent.
-Rails/Blank:
-  Exclude:
-    - 'lib/tasks/databank.rake'
-
-# Offense count: 2
-# Configuration parameters: Database, Include.
-# SupportedDatabases: mysql, postgresql
-# Include: db/migrate/*.rb
-Rails/BulkChangeTable:
-  Exclude:
-    - 'db/migrate/20180203063658_add_dates_to_chat.rb'
-
 # Offense count: 9
 # Configuration parameters: Include.
 # Include: db/migrate/*.rb
@@ -258,27 +113,18 @@ Rails/CreateTableWithTimestamps:
     - 'db/migrate/20170817161038_create_winners.rb'
     - 'db/migrate/20171104065321_create_data_banks.rb'
 
-# Offense count: 4
-# Configuration parameters: EnforcedStyle, AllowToTime.
-# SupportedStyles: strict, flexible
-Rails/Date:
-  Exclude:
-    - 'app/models/winner.rb'
-    - 'app/processors/message_processor/eightball.rb'
-
-# Offense count: 4
+# Offense count: 3
 # Configuration parameters: EnforcedStyle.
 # SupportedStyles: slashes, arguments
 Rails/FilePath:
   Exclude:
-    - 'config/environments/development.rb'
     - 'config/initializers/locale.rb'
     - 'lib/tasks/database.rake'
     - 'spec/rails_helper.rb'
 
 # Offense count: 1
 # Configuration parameters: Include.
-# Include: db/migrate/*.rb
+# Include: db/**/*.rb
 Rails/ReversibleMigration:
   Exclude:
     - 'db/migrate/20180211095834_fix_chat_timestamps.rb'
@@ -292,103 +138,28 @@ Rails/SkipsModelValidations:
     - 'app/models/word.rb'
     - 'db/migrate/20170917105603_persist_chat_i_ds.rb'
 
-# Offense count: 2
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle.
-# SupportedStyles: strict, flexible
-Rails/TimeZone:
-  Exclude:
-    - 'db/migrate/20180203063658_add_dates_to_chat.rb'
-
-# Offense count: 1
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle.
-# SupportedStyles: always, conditionals
-Style/AndOr:
-  Exclude:
-    - 'lib/tasks/database.rake'
-
-# Offense count: 5
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle.
-# SupportedStyles: compact, expanded
-Style/EmptyMethod:
-  Exclude:
-    - 'app/processors/message_processor/databank.rb'
-    - 'app/workers/covid_worker.rb'
-
 # Offense count: 1
-# Cop supports --auto-correct.
+# This cop supports unsafe autocorrection (--autocorrect-all).
 Style/GlobalStdStream:
   Exclude:
     - 'config/environments/production.rb'
 
-# Offense count: 1
-# Configuration parameters: MinBranchesCount.
-Style/HashLikeCase:
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle, AllowInnerSlashes.
+# SupportedStyles: slashes, percent_r, mixed
+Style/RegexpLiteral:
   Exclude:
-    - 'lib/tasks/database.rake'
+    - 'Guardfile'
 
 # Offense count: 2
-# Cop supports --auto-correct.
-Style/KeywordParametersOrder:
-  Exclude:
-    - 'app/models/pair.rb'
-
-# Offense count: 1
-# Cop supports --auto-correct.
-Style/Not:
-  Exclude:
-    - 'lib/tasks/database.rake'
-
-# Offense count: 3
-# Cop supports --auto-correct.
+# This cop supports unsafe autocorrection (--autocorrect-all).
 Style/SlicingWithRange:
   Exclude:
-    - 'spec/processors/message_processor/base_processor_spec.rb'
     - 'spec/processors/message_processor/me_spec.rb'
     - 'spec/processors/message_processor/say_spec.rb'
 
 # Offense count: 1
-# Cop supports --auto-correct.
-# Configuration parameters: Mode.
-Style/StringConcatenation:
-  Exclude:
-    - 'lib/tasks/database.rake'
-
-# Offense count: 5
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, ConsistentQuotesInMultiline.
-# SupportedStyles: single_quotes, double_quotes
-Style/StringLiterals:
-  Exclude:
-    - 'config.ru'
-    - 'config/environments/production.rb'
-    - 'config/initializers/backtrace_silencers.rb'
-    - 'lib/tasks/databank.rake'
-    - 'spec/factories/telegram/message.rb'
-
-# Offense count: 7
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, MinSize.
-# SupportedStyles: percent, brackets
-Style/SymbolArray:
-  Exclude:
-    - 'config/initializers/filter_parameter_logging.rb'
-    - 'db/migrate/20170815155843_create_pairs.rb'
-    - 'db/migrate/20170816162384_create_singles.rb'
-    - 'db/migrate/20171104065321_create_data_banks.rb'
-    - 'lib/tasks/databank.rake'
-
-# Offense count: 1
-# Cop supports --auto-correct.
+# This cop supports safe autocorrection (--autocorrect).
 Style/WhileUntilDo:
   Exclude:
     - 'app/models/pair.rb'
-
-# Offense count: 4
-# Cop supports --auto-correct.
-# Configuration parameters: AllowHeredoc, AllowURI, URISchemes, IgnoreCopDirectives, IgnoredPatterns.
-# URISchemes: http, https
-Layout/LineLength:
-  Max: 133
diff --git a/app/models/chat.rb b/app/models/chat.rb
index 65a77ba..c5c9872 100644
--- a/app/models/chat.rb
+++ b/app/models/chat.rb
@@ -63,7 +63,7 @@ def answer_randomly?(additional = 0)
   end
 
   def generate_reply(words)
-    Pair.build_sentence(chat: self, words: words) || Pair.build_sentence(chat: self, words_ids: context)
+    Pair.build_sentence(chat: self, words:) || Pair.build_sentence(chat: self, words_ids: context)
   end
 
   def generate_story
diff --git a/app/models/data_bank.rb b/app/models/data_bank.rb
index 337db59..0fabd27 100644
--- a/app/models/data_bank.rb
+++ b/app/models/data_bank.rb
@@ -5,10 +5,10 @@ class DataBank < ApplicationRecord
 
   class << self
     def update(filename:, id: nil, name: nil)
-      databank = Databank.find_by(id: id) || Databank.create(name: name)
+      databank = Databank.find_by(id:) || Databank.create(name:)
       databank.pairs.destroy
       words = File.read(filename, 'r').split(' ')
-      Pair.learn(chat_id: nil, data_bank_id: databank.id, words: words)
+      Pair.learn(chat_id: nil, data_bank_id: databank.id, words:)
     end
   end
 end
diff --git a/app/models/pair.rb b/app/models/pair.rb
index 2ebf3d7..ea5c11a 100644
--- a/app/models/pair.rb
+++ b/app/models/pair.rb
@@ -18,10 +18,10 @@ def check_chat_and_bank
   end
 
   class << self
-    def learn(chat: nil, data_bank: nil, words:)
+    def learn(words:, chat: nil, data_bank: nil)
       raise 'Chat OR Databank must be specified' if chat.nil? == data_bank.nil?
-      Word.learn(words)
 
+      Word.learn(words)
       words_array = [nil]
       words.each do |word|
         words_array << word
@@ -37,8 +37,8 @@ def learn(chat: nil, data_bank: nil, words:)
           next
         end
         words_ids.shift
-        pair_params = { chat: chat,
-                        data_bank: data_bank,
+        pair_params = { chat:,
+                        data_bank:,
                         first_id: trigram.first,
                         second_id: trigram.second }
         pair = Pair.includes(:replies).find_or_create_by!(pair_params)
@@ -52,13 +52,13 @@ def build_sentence(chat: self.chat, words: nil, words_ids: nil)
       words_ids = Word.to_ids(words) if words.present?
       sentence = []
       safety_counter = 50
-      pair_params = { chat: chat, first_id: nil, second_id: words_ids }
+      pair_params = { chat:, first_id: nil, second_id: words_ids }
 
       while (pair = fetch_pair(pair_params)) && (sentence.size < safety_counter) do
         replies = pair.replies.order(count: :desc)
         replies_pool = 3 + replies.size / 2
         reply = replies.limit(replies_pool).sample
-        pair_params = { chat: chat, first_id: pair.second_id, second_id: reply&.word_id }
+        pair_params = { chat:, first_id: pair.second_id, second_id: reply&.word_id }
         sentence << pair.second_id if sentence.empty?
         reply&.word_id.nil? ? break : sentence << reply.word_id
       end
diff --git a/app/models/participation.rb b/app/models/participation.rb
index da8d3c1..4b9132b 100644
--- a/app/models/participation.rb
+++ b/app/models/participation.rb
@@ -28,7 +28,7 @@ def learn(message)
       user = User.find_by(id: message&.from&.id)
       return if chat.nil? || user.nil?
 
-      Participation.find_or_create_by(chat: chat, user: user).learn(message)
+      Participation.find_or_create_by(chat:, user:).learn(message)
     end
   end
 end
diff --git a/app/models/word.rb b/app/models/word.rb
index 457b1a5..ac6290e 100644
--- a/app/models/word.rb
+++ b/app/models/word.rb
@@ -19,7 +19,7 @@ def learn(words)
       new_words = words - Word.where(word: words).pluck(:word)
       return nil if new_words.blank?
 
-      words_array = new_words.uniq.map { |word| { word: word} }
+      words_array = new_words.uniq.map { |word| { word: } }
       Word.insert_all(words_array)
     end
   end
diff --git a/app/processors/concerns/processor.rb b/app/processors/concerns/processor.rb
index 3aa96d4..fc17592 100644
--- a/app/processors/concerns/processor.rb
+++ b/app/processors/concerns/processor.rb
@@ -69,6 +69,6 @@ def user
   end
 
   def participation
-    @participation ||= Participation.find_by!(chat: chat, user: user)
+    @participation ||= Participation.find_by!(chat:, user:)
   end
 end
diff --git a/app/processors/message_processor/databank.rb b/app/processors/message_processor/databank.rb
index 5958bfe..97a86d1 100644
--- a/app/processors/message_processor/databank.rb
+++ b/app/processors/message_processor/databank.rb
@@ -52,9 +52,9 @@ def disable
 
     def show
       databanks = DataBank.pluck(:id, :name).to_h
-      list = databanks.map { |id, name| I18n.t('.databank.list_line_html', id: id, name: name) }.join("\n")
+      list = databanks.map { |id, name| I18n.t('.databank.list_line_html', id:, name:) }.join("\n")
       active = chat.data_bank_ids.present? ? chat.data_bank_ids.to_sentence : I18n.t('false')
-      I18n.t('.databank.list_html', list: list, active: active)
+      I18n.t('.databank.list_html', list:, active:)
     end
   end
 end
diff --git a/app/processors/message_processor/eightball.rb b/app/processors/message_processor/eightball.rb
index 70fab8f..69fb28c 100644
--- a/app/processors/message_processor/eightball.rb
+++ b/app/processors/message_processor/eightball.rb
@@ -32,7 +32,7 @@ def generate_prediction
       return I18n.t('eightball.empty').sample if command_parameters.blank?
 
       answers = I18n.t('.eightball.replies')
-      digest = Digest::SHA1.hexdigest(command_parameters).to_i(16) - Date.today.to_time.to_i.div(100) - user.id
+      digest = Digest::SHA1.hexdigest(command_parameters).to_i(16) - Time.zone.today.to_time.to_i.div(100) - user.id
       answer_id = digest.divmod(answers.count)[1]
       answers[answer_id]
     end
diff --git a/app/processors/message_processor/winner.rb b/app/processors/message_processor/winner.rb
index 6e6bfb4..48be2c3 100644
--- a/app/processors/message_processor/winner.rb
+++ b/app/processors/message_processor/winner.rb
@@ -39,7 +39,7 @@ def current_stats
                   I18n.t('winner.top_line_html', position: i + 1, user: p.user.to_s, score: p.score) if p.user.present?
                 end.compact.join("\n")
 
-      I18n.t('winner.current_html', top: top)
+      I18n.t('winner.current_html', top:)
     end
 
     def previous_winner
@@ -56,7 +56,7 @@ def previous_winner
                   .map { |(user, wins), idx| I18n.t('winner.top_line_html', position: idx + 1, user: user.to_s, score: wins) }
                   .join("\n")
 
-        I18n.t('winner.winner_html', top: top, name: chat.winner, user: winner)
+        I18n.t('winner.winner_html', top:, name: chat.winner, user: winner)
       else
         I18n.t('winner.no_one')
       end
diff --git a/app/workers/pair_update_worker.rb b/app/workers/pair_update_worker.rb
index fbba695..64c3327 100644
--- a/app/workers/pair_update_worker.rb
+++ b/app/workers/pair_update_worker.rb
@@ -7,6 +7,6 @@ class PairUpdateWorker
   def perform(chat_id, text)
     chat = Chat.find(chat_id)
 
-    Pair.learn(chat: chat, words: text.split)
+    Pair.learn(chat:, words: text.split)
   end
 end
diff --git a/app/workers/winner_gamble_worker.rb b/app/workers/winner_gamble_worker.rb
index 50b7a8d..cd23fe8 100644
--- a/app/workers/winner_gamble_worker.rb
+++ b/app/workers/winner_gamble_worker.rb
@@ -18,7 +18,7 @@ def perform(chat_id)
               .map { |(user, wins), idx| I18n.t('winner.top_line_html', position: idx + 1, user: user.to_s, score: wins) }
               .join("\n")
 
-    parameters = { text: I18n.t('winner.winner_html', top: top, name: chat.winner, user: winner.to_link),
+    parameters = { text: I18n.t('winner.winner_html', top:, name: chat.winner, user: winner.to_link),
                    parse_mode: :html,
                    disable_notification: true,
                    chat_id: chat.telegram_id }
diff --git a/config/application.rb b/config/application.rb
index 92468eb..056cf9a 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -34,7 +34,6 @@ class Application < Rails::Application
     # config.time_zone = "Central Time (US & Canada)"
     # config.eager_load_paths << Rails.root.join("extras")
 
-
     # Only loads a smaller set of middleware suitable for API only apps.
     # Middleware like session, flash, cookies can be added back manually.
     # Skip views, helpers and assets when generating a new resource.
diff --git a/config/boot.rb b/config/boot.rb
index 2ecfc50..ad622f6 100644
--- a/config/boot.rb
+++ b/config/boot.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../Gemfile", __dir__)
 
 require "bundler/setup" # Set up gems listed in the Gemfile.
diff --git a/config/environment.rb b/config/environment.rb
index cac5315..7df99e8 100644
--- a/config/environment.rb
+++ b/config/environment.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Load the Rails application.
 require_relative "application"
 
diff --git a/config/environments/development.rb b/config/environments/development.rb
index 5bb4432..0a0c1c1 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "active_support/core_ext/integer/time"
 
 Rails.application.configure do
@@ -45,7 +47,6 @@
   # Highlight code that triggered database queries in logs.
   config.active_record.verbose_query_logs = true
 
-
   # Raises error for missing translations.
   # config.i18n.raise_on_missing_translations = true
 
diff --git a/config/environments/production.rb b/config/environments/production.rb
index 98e3fb2..8de44ea 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "active_support/core_ext/integer/time"
 
 Rails.application.configure do
@@ -13,7 +15,7 @@
   config.eager_load = true
 
   # Full error reports are disabled and caching is turned on.
-  config.consider_all_requests_local       = false
+  config.consider_all_requests_local = false
 
   # Ensures that a master key has been made available in either ENV["RAILS_MASTER_KEY"]
   # or in config/master.key. This key is used to decrypt credentials (and other encrypted files).
@@ -38,7 +40,7 @@
   config.log_level = :info
 
   # Prepend all log lines with the following tags.
-  config.log_tags = [ :request_id ]
+  config.log_tags = [:request_id]
 
   # Use a different cache store in production.
   # config.cache_store = :mem_cache_store
diff --git a/config/environments/test.rb b/config/environments/test.rb
index 0eb0fe6..d96f2ab 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "active_support/core_ext/integer/time"
 
 # The test environment is used exclusively to run your application's
diff --git a/config/initializers/cors.rb b/config/initializers/cors.rb
index e5a82f1..62875c1 100644
--- a/config/initializers/cors.rb
+++ b/config/initializers/cors.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Be sure to restart your server when you modify this file.
 
 # Avoid CORS issues when API is called from the frontend app.
diff --git a/config/initializers/filter_parameter_logging.rb b/config/initializers/filter_parameter_logging.rb
index 4b34a03..e214a4c 100644
--- a/config/initializers/filter_parameter_logging.rb
+++ b/config/initializers/filter_parameter_logging.rb
@@ -1,6 +1,6 @@
+# frozen_string_literal: true
+
 # Be sure to restart your server when you modify this file.
 
 # Configure sensitive parameters which will be filtered from the log file.
-Rails.application.config.filter_parameters += [
-  :passw, :secret, :token, :_key, :crypt, :salt, :certificate, :otp, :ssn
-]
+Rails.application.config.filter_parameters += %i[passw secret token _key crypt salt certificate otp ssn]
diff --git a/config/initializers/inflections.rb b/config/initializers/inflections.rb
index 3860f65..9e049dc 100644
--- a/config/initializers/inflections.rb
+++ b/config/initializers/inflections.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Be sure to restart your server when you modify this file.
 
 # Add new inflection rules using the following format. Inflections
diff --git a/config/initializers/new_framework_defaults_6_1.rb b/config/initializers/new_framework_defaults_6_1.rb
deleted file mode 100644
index a128fd3..0000000
--- a/config/initializers/new_framework_defaults_6_1.rb
+++ /dev/null
@@ -1,64 +0,0 @@
-# frozen_string_literal: true
-# Be sure to restart your server when you modify this file.
-#
-# This file contains migration options to ease your Rails 6.1 upgrade.
-#
-# Once upgraded flip defaults one by one to migrate to the new default.
-#
-# Read the Guide for Upgrading Ruby on Rails for more info on each option.
-
-# Support for inversing belongs_to -> has_many Active Record associations.
-# Rails.application.config.active_record.has_many_inversing = true
-
-# Track Active Storage variants in the database.
-# Rails.application.config.active_storage.track_variants = true
-
-# Apply random variation to the delay when retrying failed jobs.
-# Rails.application.config.active_job.retry_jitter = 0.15
-
-# Stop executing `after_enqueue`/`after_perform` callbacks if
-# `before_enqueue`/`before_perform` respectively halts with `throw :abort`.
-# Rails.application.config.active_job.skip_after_callbacks_if_terminated = true
-
-# Specify cookies SameSite protection level: either :none, :lax, or :strict.
-#
-# This change is not backwards compatible with earlier Rails versions.
-# It's best enabled when your entire app is migrated and stable on 6.1.
-# Rails.application.config.action_dispatch.cookies_same_site_protection = :lax
-
-# Generate CSRF tokens that are encoded in URL-safe Base64.
-#
-# This change is not backwards compatible with earlier Rails versions.
-# It's best enabled when your entire app is migrated and stable on 6.1.
-# Rails.application.config.action_controller.urlsafe_csrf_tokens = true
-
-# Specify whether `ActiveSupport::TimeZone.utc_to_local` returns a time with an
-# UTC offset or a UTC time.
-# ActiveSupport.utc_to_local_returns_utc_offset_times = true
-
-# Change the default HTTP status code to `308` when redirecting non-GET/HEAD
-# requests to HTTPS in `ActionDispatch::SSL` middleware.
-# Rails.application.config.action_dispatch.ssl_default_redirect_status = 308
-
-# Use new connection handling API. For most applications this won't have any
-# effect. For applications using multiple databases, this new API provides
-# support for granular connection swapping.
-# Rails.application.config.active_record.legacy_connection_handling = false
-
-# Make `form_with` generate non-remote forms by default.
-# Rails.application.config.action_view.form_with_generates_remote_forms = false
-
-# Set the default queue name for the analysis job to the queue adapter default.
-# Rails.application.config.active_storage.queues.analysis = nil
-
-# Set the default queue name for the purge job to the queue adapter default.
-# Rails.application.config.active_storage.queues.purge = nil
-
-# Set the default queue name for the incineration job to the queue adapter default.
-# Rails.application.config.action_mailbox.queues.incineration = nil
-
-# Set the default queue name for the routing job to the queue adapter default.
-# Rails.application.config.action_mailbox.queues.routing = nil
-
-# Set the default queue name for the mail deliver job to the queue adapter default.
-# Rails.application.config.action_mailer.deliver_later_queue_name = nil
diff --git a/config/initializers/new_framework_defaults_7_0.rb b/config/initializers/new_framework_defaults_7_0.rb
deleted file mode 100644
index a579326..0000000
--- a/config/initializers/new_framework_defaults_7_0.rb
+++ /dev/null
@@ -1,117 +0,0 @@
-# Be sure to restart your server when you modify this file.
-#
-# This file eases your Rails 7.0 framework defaults upgrade.
-#
-# Uncomment each configuration one by one to switch to the new default.
-# Once your application is ready to run with all new defaults, you can remove
-# this file and set the `config.load_defaults` to `7.0`.
-#
-# Read the Guide for Upgrading Ruby on Rails for more info on each option.
-# https://guides.rubyonrails.org/upgrading_ruby_on_rails.html
-
-# `button_to` view helper will render `<button>` element, regardless of whether
-# or not the content is passed as the first argument or as a block.
-# Rails.application.config.action_view.button_to_generates_button_tag = true
-
-# `stylesheet_link_tag` view helper will not render the media attribute by default.
-# Rails.application.config.action_view.apply_stylesheet_media_default = false
-
-# Change the digest class for the key generators to `OpenSSL::Digest::SHA256`.
-# Changing this default means invalidate all encrypted messages generated by
-# your application and, all the encrypted cookies. Only change this after you
-# rotated all the messages using the key rotator.
-#
-# See upgrading guide for more information on how to build a rotator.
-# https://guides.rubyonrails.org/v7.0/upgrading_ruby_on_rails.html
-# Rails.application.config.active_support.key_generator_hash_digest_class = OpenSSL::Digest::SHA256
-
-# Change the digest class for ActiveSupport::Digest.
-# Changing this default means that for example Etags change and
-# various cache keys leading to cache invalidation.
-# Rails.application.config.active_support.hash_digest_class = OpenSSL::Digest::SHA256
-
-# Don't override ActiveSupport::TimeWithZone.name and use the default Ruby
-# implementation.
-# Rails.application.config.active_support.remove_deprecated_time_with_zone_name = true
-
-# Change the format of the cache entry.
-# Changing this default means that all new cache entries added to the cache
-# will have a different format that is not supported by Rails 6.1 applications.
-# Only change this value after your application is fully deployed to Rails 7.0
-# and you have no plans to rollback.
-# Rails.application.config.active_support.cache_format_version = 7.0
-
-# Calls `Rails.application.executor.wrap` around test cases.
-# This makes test cases behave closer to an actual request or job.
-# Several features that are normally disabled in test, such as Active Record query cache
-# and asynchronous queries will then be enabled.
-# Rails.application.config.active_support.executor_around_test_case = true
-
-# Define the isolation level of most of Rails internal state.
-# If you use a fiber based server or job processor, you should set it to `:fiber`.
-# Otherwise the default of `:thread` if preferable.
-# Rails.application.config.active_support.isolation_level = :thread
-
-# Set both the `:open_timeout` and `:read_timeout` values for `:smtp` delivery method.
-# Rails.application.config.action_mailer.smtp_timeout = 5
-
-# The ActiveStorage video previewer will now use scene change detection to generate
-# better preview images (rather than the previous default of using the first frame
-# of the video).
-# Rails.application.config.active_storage.video_preview_arguments =
-#   "-vf 'select=eq(n\\,0)+eq(key\\,1)+gt(scene\\,0.015),loop=loop=-1:size=2,trim=start_frame=1' -frames:v 1 -f image2"
-
-# Automatically infer `inverse_of` for associations with a scope.
-# Rails.application.config.active_record.automatic_scope_inversing = true
-
-# Raise when running tests if fixtures contained foreign key violations
-# Rails.application.config.active_record.verify_foreign_keys_for_fixtures = true
-
-# Disable partial inserts.
-# This default means that all columns will be referenced in INSERT queries
-# regardless of whether they have a default or not.
-# Rails.application.config.active_record.partial_inserts = false
-#
-# Protect from open redirect attacks in `redirect_back_or_to` and `redirect_to`.
-# Rails.application.config.action_controller.raise_on_open_redirects = true
-
-# Change the variant processor for Active Storage.
-# Changing this default means updating all places in your code that
-# generate variants to use image processing macros and ruby-vips
-# operations. See the upgrading guide for detail on the changes required.
-# The `:mini_magick` option is not deprecated; it's fine to keep using it.
-# Rails.application.config.active_storage.variant_processor = :vips
-
-# If you're upgrading and haven't set `cookies_serializer` previously, your cookie serializer
-# was `:marshal`. Convert all cookies to JSON, using the `:hybrid` formatter.
-#
-# If you're confident all your cookies are JSON formatted, you can switch to the `:json` formatter.
-#
-# Continue to use `:marshal` for backward-compatibility with old cookies.
-#
-# If you have configured the serializer elsewhere, you can remove this.
-#
-# See https://guides.rubyonrails.org/action_controller_overview.html#cookies for more information.
-# Rails.application.config.action_dispatch.cookies_serializer = :hybrid
-
-# Enable parameter wrapping for JSON.
-# Previously this was set in an initializer. It's fine to keep using that initializer if you've customized it.
-# To disable parameter wrapping entirely, set this config to `false`.
-# Rails.application.config.action_controller.wrap_parameters_by_default = true
-
-# Specifies whether generated namespaced UUIDs follow the RFC 4122 standard for namespace IDs provided as a
-# `String` to `Digest::UUID.uuid_v3` or `Digest::UUID.uuid_v5` method calls.
-#
-# See https://guides.rubyonrails.org/configuring.html#config-active-support-use-rfc4122-namespaced-uuids for
-# more information.
-# Rails.application.config.active_support.use_rfc4122_namespaced_uuids = true
-
-# Change the default headers to disable browsers' flawed legacy XSS protection.
-# Rails.application.config.action_dispatch.default_headers = {
-#   "X-Frame-Options" => "SAMEORIGIN",
-#   "X-XSS-Protection" => "0",
-#   "X-Content-Type-Options" => "nosniff",
-#   "X-Download-Options" => "noopen",
-#   "X-Permitted-Cross-Domain-Policies" => "none",
-#   "Referrer-Policy" => "strict-origin-when-cross-origin"
-# }
diff --git a/db/migrate/20170815155843_create_pairs.rb b/db/migrate/20170815155843_create_pairs.rb
index 7889063..d183d0a 100644
--- a/db/migrate/20170815155843_create_pairs.rb
+++ b/db/migrate/20170815155843_create_pairs.rb
@@ -7,6 +7,6 @@ def change
       t.references :first, null: true
       t.references :second, null: true
     end
-    add_index :pairs, [ :first_id, :second_id, :chat_id ], unique: true
+    add_index :pairs, %i[first_id second_id chat_id], unique: true
   end
 end
diff --git a/db/migrate/20170816162384_create_singles.rb b/db/migrate/20170816162384_create_singles.rb
index 773344f..7940521 100644
--- a/db/migrate/20170816162384_create_singles.rb
+++ b/db/migrate/20170816162384_create_singles.rb
@@ -5,10 +5,10 @@ def change
     create_table :singles do |t|
       t.references :chat,       null: false
       t.references :word,       null: false
-      t.integer    :reply_type, null: true,  limit: 1
       t.string     :reply,      null: false
+      t.integer    :reply_type, null: true,  limit: 1
       t.integer    :count,      null: false, limit: 8, default: 0
     end
-    add_index :singles, [ :word_id, :chat_id, :reply_type, :reply ], unique: true
+    add_index :singles, %i[word_id chat_id reply_type reply], unique: true
   end
 end
diff --git a/db/migrate/20171028053628_remove_one_world_sentences.rb b/db/migrate/20171028053628_remove_one_world_sentences.rb
index 7411ca8..2fb0f9e 100644
--- a/db/migrate/20171028053628_remove_one_world_sentences.rb
+++ b/db/migrate/20171028053628_remove_one_world_sentences.rb
@@ -3,6 +3,6 @@
 class RemoveOneWorldSentences < ActiveRecord::Migration[5.1]
   def change
     Reply.joins(:pair).where(word_id: nil, pairs: { first_id: nil }).destroy_all
-    Pair.includes(:replies).where(first_id: nil, replies: { id: nil } ).destroy_all
+    Pair.includes(:replies).where(first_id: nil, replies: { id: nil }).destroy_all
   end
 end
diff --git a/db/migrate/20171104065321_create_data_banks.rb b/db/migrate/20171104065321_create_data_banks.rb
index 9e14680..bee1ca3 100644
--- a/db/migrate/20171104065321_create_data_banks.rb
+++ b/db/migrate/20171104065321_create_data_banks.rb
@@ -7,7 +7,7 @@ def change
     end
     add_column :chats, :data_bank_ids, :jsonb, null: false, default: []
     add_column :pairs, :data_bank_id, :integer, null: true
-    remove_index :pairs, [ :first_id, :second_id, :chat_id ]
-    add_index :pairs, [ :first_id, :second_id, :chat_id, :data_bank_id ], unique: true, name: 'pairs_index'
+    remove_index :pairs, %i[first_id second_id chat_id]
+    add_index :pairs, %i[first_id second_id chat_id data_bank_id], unique: true, name: 'pairs_index'
   end
 end
diff --git a/db/migrate/20180203063658_add_dates_to_chat.rb b/db/migrate/20180203063658_add_dates_to_chat.rb
index ced894e..a493211 100644
--- a/db/migrate/20180203063658_add_dates_to_chat.rb
+++ b/db/migrate/20180203063658_add_dates_to_chat.rb
@@ -2,16 +2,21 @@
 
 class AddDatesToChat < ActiveRecord::Migration[5.1]
   def up
-    add_column :chats, :created_at, :datetime, null: false, default: Time.now
-    add_column :chats, :active_at, :datetime, null: true, default: nil
-    Chat.where(active: true).each { |c| c.update(active_at: Time.now) }
+    change_table :chats, bulk: true do |t|
+      t.datetime :chats, :created_at, null: false, default: Time.current
+      t.datetime :chats, :active_at, null: true, default: nil
+    end
+
+    Chat.where(active: true).each { |c| c.update(active_at: Time.current) }
     remove_column :chats, :active
   end
 
   def down
     add_column :chats, :active, :boolean, null: false, default: false
     Chat.where.not(active_at: nil).each { |c| c.update(active: true) }
-    remove_column :chats, :active_at
-    remove_column :chats, :created_at
+    change_table :chats, bulk: true do |t|
+      t.remove :created_at, type: :datetime, null: false, default: Time.current
+      t.remove :active_at, type: :datetime, null: true, default: nil
+    end
   end
 end
diff --git a/db/migrate/20210925130635_remove_urls_and_singles.rb b/db/migrate/20210925130635_remove_urls_and_singles.rb
index 1719707..b60669d 100644
--- a/db/migrate/20210925130635_remove_urls_and_singles.rb
+++ b/db/migrate/20210925130635_remove_urls_and_singles.rb
@@ -9,8 +9,8 @@ def change
     drop_table :singles do |t|
       t.references :chat,       null: false
       t.references :word,       null: false
-      t.integer    :reply_type, null: true,  limit: 1
       t.string     :reply,      null: false
+      t.integer    :reply_type, null: true,  limit: 1
       t.integer    :count,      null: false, limit: 8, default: 0
     end
   end
diff --git a/db/migrate/20211102090851_add_score_to_participation.rb b/db/migrate/20211102090851_add_score_to_participation.rb
index 3a3f88a..2c324c9 100644
--- a/db/migrate/20211102090851_add_score_to_participation.rb
+++ b/db/migrate/20211102090851_add_score_to_participation.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class AddScoreToParticipation < ActiveRecord::Migration[6.1]
   def change
     add_column :participations, :score, :integer, null: false, default: 0
diff --git a/db/migrate/20211102142926_add_date_to_winner.rb b/db/migrate/20211102142926_add_date_to_winner.rb
index beabb8d..cd6c17c 100644
--- a/db/migrate/20211102142926_add_date_to_winner.rb
+++ b/db/migrate/20211102142926_add_date_to_winner.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class AddDateToWinner < ActiveRecord::Migration[6.1]
   def change
     add_column :winners, :date, :date, null: true
diff --git a/db/migrate/20240120083027_remove_covid_stats.rb b/db/migrate/20240120083027_remove_covid_stats.rb
index 484416c..722409d 100644
--- a/db/migrate/20240120083027_remove_covid_stats.rb
+++ b/db/migrate/20240120083027_remove_covid_stats.rb
@@ -3,10 +3,21 @@
 class RemoveCovidStats < ActiveRecord::Migration[7.0]
   def change
     change_table :chats, bulk: true do |t|
-      t.remove :covid_region
-      t.remove :covid_last_notification
+      t.remove :covid_region, type: :integer, null: true, default: nil
+      t.remove :covid_last_notification, type: :date, null: true
     end
+
     remove_index :covid_stats, %i[date region], unique: true
-    drop_table :covid_stats
+    drop_table :covid_stats do |t|
+      t.integer :region, null: false
+      t.date    :date,   null: false
+      t.integer :sick,   null: true
+      t.integer :healed, null: true
+      t.integer :died,   null: true
+      t.integer :first,  null: true
+      t.integer :second, null: true
+
+      t.timestamps
+    end
   end
 end
diff --git a/db/migrate/20240120084922_remove_cas_banner.rb b/db/migrate/20240120084922_remove_cas_banner.rb
index 75aa032..f0ee61c 100644
--- a/db/migrate/20240120084922_remove_cas_banner.rb
+++ b/db/migrate/20240120084922_remove_cas_banner.rb
@@ -1,10 +1,12 @@
+# frozen_string_literal: true
+
 class RemoveCasBanner < ActiveRecord::Migration[7.0]
   def change
     remove_column :chats, :casbanhammer_at, :datetime, null: true, default: nil
 
     change_table :users, bulk: true do |t|
-      t.remove :casbanned_at
-      t.remove :casbanchecked_at
+      t.remove :casbanned_at, type: :datetime, null: true, default: nil
+      t.remove :casbanchecked_at, type: :datetime, null: true, default: nil
     end
   end
 end
diff --git a/lib/tasks/databank.rake b/lib/tasks/databank.rake
index f79ac61..436e5ee 100644
--- a/lib/tasks/databank.rake
+++ b/lib/tasks/databank.rake
@@ -1,14 +1,14 @@
 # frozen_string_literal: true
 
 namespace :databank do
-  task :delete, [:id] => :environment do |t, args|
+  task :delete, [:id] => :environment do |_, args|
     if args.count.zero?
       puts 'Specify databank ID'
       break
     end
     id = args[:id].to_i
-    databank = DataBank.find_by(id: id)
-    if id.zero? || !databank.present?
+    databank = DataBank.find_by(id:)
+    if id.zero? || databank.blank?
       puts 'Wrong databank ID'
       break
     end
@@ -19,10 +19,10 @@ namespace :databank do
   task list: :environment do
     databanks = DataBank.pluck(:id, :name)
     puts "Available Databanks: #{databanks.count}"
-    puts DataBank.pluck(:id, :name).map {|d| "#{d.first}: #{d.second}"}.join("\n")
+    puts DataBank.pluck(:id, :name).map { |d| "#{d.first}: #{d.second}" }.join("\n")
   end
 
-  task :import, [:name, :file] => :environment do |t, args|
+  task :import, %i[name file] => :environment do |_, args|
     unless args[:name].present? && args[:file].present?
       puts 'Specify databank name and filename'
       break
@@ -31,18 +31,18 @@ namespace :databank do
     words = File.read(args[:file]).downcase.split(' ')
     databank = DataBank.create!(name: args[:name])
     puts "Creating databank #{databank.name} with id#{databank.id}"
-    Pair.learn(chat_id: nil, data_bank_id: databank.id, words: words)
-    puts "Done!"
+    Pair.learn(chat_id: nil, data_bank_id: databank.id, words:)
+    puts 'Done!'
   end
 
-  task :update, [:id, :file] => :environment do |t, args|
+  task :update, %i[id file] => :environment do |_, args|
     id = args[:id].to_i
-    databank = DataBank.find_by(id: id)
-    if id.zero? || !databank.present?
+    databank = DataBank.find_by(id:)
+    if id.zero? || databank.blank?
       puts 'Wrong databank ID'
       break
     end
-    unless args[:file].present?
+    if args[:file].blank?
       puts 'Specify filename'
       break
     end
@@ -51,7 +51,7 @@ namespace :databank do
     puts 'Removing old data…'
     Pair.where(chat_id: nil, data_bank_id: databank.id).destroy_all
     puts 'Learning new data…'
-    Pair.learn(chat_id: nil, data_bank_id: databank.id, words: words)
+    Pair.learn(chat_id: nil, data_bank_id: databank.id, words:)
     puts 'Done'
   end
 end
diff --git a/spec/factories/telegram/message.rb b/spec/factories/telegram/message.rb
index 9e59289..3755379 100644
--- a/spec/factories/telegram/message.rb
+++ b/spec/factories/telegram/message.rb
@@ -63,7 +63,7 @@
     end
 
     trait :command_databank_enable do
-      text     { "/databank enable" }
+      text     { '/databank enable' }
       entities { [{ type: 'bot_command', offset: 0, length: 9 }] }
     end
 
@@ -163,7 +163,7 @@
     end
 
     trait :command_empty_eightball do
-      text     { "/eightball" }
+      text     { '/eightball' }
       entities { [{ type: 'bot_command', offset: 0, length: 10 }] }
     end
 
diff --git a/spec/models/chat_spec.rb b/spec/models/chat_spec.rb
index 2141453..eedd90b 100644
--- a/spec/models/chat_spec.rb
+++ b/spec/models/chat_spec.rb
@@ -18,10 +18,15 @@
   end
 
   describe '#choose_winner!' do
-    subject(:method_call) { chat.choose_winner!}
+    subject(:method_call) { chat.choose_winner! }
 
-    let!(:participations) { create_list :participation, 5, chat: chat }
-    let!(:candidates)     { chat.participations.scored.order(score: :desc).limit(3).map { |p| p.user.id } }
+    let(:participations) { create_list :participation, 5, chat: }
+    let(:candidates)     { chat.participations.scored.order(score: :desc).limit(3).map { |p| p.user.id } }
+
+    before do
+      participations
+      candidates
+    end
 
     it { expect(method_call).to be_a User }
 
diff --git a/spec/models/pair_spec.rb b/spec/models/pair_spec.rb
index 1277d28..9d6d026 100644
--- a/spec/models/pair_spec.rb
+++ b/spec/models/pair_spec.rb
@@ -13,9 +13,9 @@
     expect(pair).to be_valid
   end
 
-  it { should belong_to(:first).optional }
-  it { should belong_to(:second).optional }
-  it { should have_many(:replies) }
+  it { is_expected.to belong_to(:first).optional }
+  it { is_expected.to belong_to(:second).optional }
+  it { is_expected.to have_many(:replies) }
 
   describe 'validates pair belonging' do
     let(:chat)      { create :chat }
@@ -28,41 +28,40 @@
     end
 
     context 'with chat and data bank' do
-      subject(:result) { build :pair, chat: chat, data_bank: data_bank }
+      subject(:result) { build :pair, chat:, data_bank: }
 
-      it { expect(result).not_to be_valid}
+      it { expect(result).not_to be_valid }
     end
 
     context 'with chat' do
-      subject(:result) { build :pair, chat: chat, data_bank: nil }
+      subject(:result) { build :pair, chat:, data_bank: nil }
 
-      it { expect(result).to be_valid}
+      it { expect(result).to be_valid }
     end
 
     context 'with data bank' do
-      subject(:result) { build :pair, chat: nil, data_bank: data_bank }
+      subject(:result) { build :pair, chat: nil, data_bank: }
 
-      it { expect(result).to be_valid}
+      it { expect(result).to be_valid }
     end
   end
 
   describe '::build sentence' do
-    subject(:result) { described_class.build_sentence chat: chat, words: words }
+    subject(:result) { described_class.build_sentence chat:, words: }
 
     let(:chat)      { create :chat }
     let(:words)     { FFaker::Lorem.sentences.join(' ').split.uniq }
-    let(:sentences) { words.join(' ').split('.').map{ |s| "#{s.strip}." } }
+    let(:sentences) { words.join(' ').split('.').map { |s| "#{s.strip}." } }
 
-    before { described_class.learn(chat: chat, words: words) }
+    before { described_class.learn(chat:, words:) }
 
     it 'generates one of the old phrases' do
       expect(sentences).to include result
     end
   end
 
-
   describe '::learn' do
-    subject(:result) { described_class.learn(chat: chat, words: words) }
+    subject(:result) { described_class.learn(chat:, words:) }
 
     let(:chat)            { create :chat }
     let(:words)           { FFaker::Lorem.sentences.join(' ').split.uniq }
@@ -90,24 +89,23 @@
     describe 'creates pairs' do
       it 'correct count' do
         predictable_count = words.size + sentences_count
-        expect { result }.to change(Pair, :count).by(predictable_count)
+        expect { result }.to change(described_class, :count).by(predictable_count)
       end
 
       it 'correct first words' do
         result
-        first_words = Pair.all.map { |p| p.first&.word }.compact
+        first_words = described_class.all.map { |p| p.first&.word }.compact
         expect(first_words).to eq words
       end
 
       it 'correct second words' do
         result
-        second_words = Pair.all.map { |p| p.second&.word }.compact
+        second_words = described_class.all.map { |p| p.second&.word }.compact
         expect(second_words).to eq words
       end
     end
   end
 
-
   # it '::to_words' do
   #   result = described_class.to_words(known_ids)
   #   expect(result).to eq known_words
diff --git a/spec/models/participation_spec.rb b/spec/models/participation_spec.rb
index d20c18f..2fc3042 100644
--- a/spec/models/participation_spec.rb
+++ b/spec/models/participation_spec.rb
@@ -7,7 +7,7 @@
   let(:tg_user)       { build :tg_user }
   let(:chat)          { create :chat, telegram_id: tg_chat.id }
   let(:user)          { create :user, id: tg_user.id }
-  let(:participation) { create :participation, user: user, chat: chat }
+  let(:participation) { create :participation, user:, chat: }
   let(:message)       { build :tg_message, chat: tg_chat, from: tg_user }
   let(:leave_message) { build :tg_message, chat: tg_chat, from: tg_user, left_chat_member: tg_user }
 
diff --git a/spec/models/user_spec.rb b/spec/models/user_spec.rb
index 4c06c80..63d47e4 100644
--- a/spec/models/user_spec.rb
+++ b/spec/models/user_spec.rb
@@ -7,7 +7,7 @@
   let(:user)    { create :user, id: tg_user.id }
   let(:message) { build :tg_message, from: tg_user }
 
-  it { should have_many(:chats).through(:participations) }
+  it { is_expected.to have_many(:chats).through(:participations) }
 
   it 'has valid factory' do
     expect(user).to be_valid
diff --git a/spec/models/word_spec.rb b/spec/models/word_spec.rb
index c157e2a..825f1e2 100644
--- a/spec/models/word_spec.rb
+++ b/spec/models/word_spec.rb
@@ -25,12 +25,12 @@
 
   describe '::learn' do
     it 'learns new words' do
-      expect { described_class.learn new_words }.to change(Word, :count).by new_words.size
+      expect { described_class.learn new_words }.to change(described_class, :count).by new_words.size
     end
 
     it "doesn't add already known words" do
       described_class.learn new_words
-      expect { described_class.learn new_words }.not_to change(Word, :count)
+      expect { described_class.learn new_words }.not_to change(described_class, :count)
     end
   end
 end
diff --git a/spec/processors/concerns/processor_spec.rb b/spec/processors/concerns/processor_spec.rb
index 3749597..bedfe64 100644
--- a/spec/processors/concerns/processor_spec.rb
+++ b/spec/processors/concerns/processor_spec.rb
@@ -15,7 +15,7 @@ def process!
 RSpec.describe MessageProcessor::ProcessorConcernStub, type: :processor do
   subject(:instance) { described_class.new(active_command) }
 
-  let(:participation)     { create :participation, user: user, chat: active_chat}
+  let(:participation)     { create :participation, user:, chat: active_chat }
   let(:user)              { create :user }
   let(:active_chat)       { create :chat }
   let(:inactive_chat)     { create :chat, :disabled }
@@ -45,7 +45,9 @@ def process!
     end
 
     context 'with username' do
-      let(:active_command) { build :tg_message, :command_me_username, from: { id: user.id }, chat: { id: active_chat.telegram_id } }
+      let(:active_command) do
+        build :tg_message, :command_me_username, from: { id: user.id }, chat: { id: active_chat.telegram_id }
+      end
 
       it 'returns bare command' do
         expect(instance.send(:command)).to eq 'me'
diff --git a/spec/processors/message_processor/binary_dice_spec.rb b/spec/processors/message_processor/binary_dice_spec.rb
index ac3365c..c391bea 100644
--- a/spec/processors/message_processor/binary_dice_spec.rb
+++ b/spec/processors/message_processor/binary_dice_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe MessageProcessor::BinaryDice, type: :processor do
@@ -5,7 +7,7 @@
 
   let(:instance)       { described_class.new(message) }
   let(:user)           { create :user }
-  let(:message_params) { { text: text, chat: { id: chat.telegram_id }, from: { id: user.id } } }
+  let(:message_params) { { text:, chat: { id: chat.telegram_id }, from: { id: user.id } } }
   let(:message)        { build :tg_message, message_params }
   let(:chat)           { create :chat, :disabled_random }
 
diff --git a/spec/processors/message_processor/cool_story_spec.rb b/spec/processors/message_processor/cool_story_spec.rb
index c6117c2..3453b03 100644
--- a/spec/processors/message_processor/cool_story_spec.rb
+++ b/spec/processors/message_processor/cool_story_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe MessageProcessor::CoolStory, type: :processor do
diff --git a/spec/processors/message_processor/databank_spec.rb b/spec/processors/message_processor/databank_spec.rb
index 3791391..6c49a62 100644
--- a/spec/processors/message_processor/databank_spec.rb
+++ b/spec/processors/message_processor/databank_spec.rb
@@ -18,9 +18,9 @@
 
       let(:expected_result) do
         databanks = DataBank.pluck(:id, :name).to_h
-        list = databanks.map { |id, name| I18n.t('.databank.list_line_html', id: id, name: name) }.join("\n")
+        list = databanks.map { |id, name| I18n.t('.databank.list_line_html', id:, name:) }.join("\n")
         active = chat.data_bank_ids.present? ? chat.data_bank_ids.to_sentence : I18n.t('false')
-        I18n.t('.databank.list_html', list: list, active: active)
+        I18n.t('.databank.list_html', list:, active:)
       end
 
       before { databanks }
@@ -90,7 +90,7 @@
       end
     end
 
-    context 'witout databank id' do
+    context 'without databank id' do
       let(:message) { build :tg_message, :command_databank_enable, message_params }
       let(:chat) { create :chat, :disabled_random, data_bank_ids: databanks.map(&:id) }
 
@@ -154,7 +154,7 @@
       end
     end
 
-    context 'witout databank id' do
+    context 'without databank id' do
       let(:message) { build :tg_message, :command_databank_disable, message_params }
 
       it 'resets data_bank_ids attribute' do
diff --git a/spec/processors/message_processor/eightball_spec.rb b/spec/processors/message_processor/eightball_spec.rb
index a93ef8f..a5a5c34 100644
--- a/spec/processors/message_processor/eightball_spec.rb
+++ b/spec/processors/message_processor/eightball_spec.rb
@@ -20,11 +20,13 @@
   let(:off_command) { build :tg_message, :command_empty_eightball, message_params.merge!(text: '/eightball off') }
   let(:enable_command) do
     build :tg_message, :command_empty_eightball,
-                       message_params.merge!(chat: { id: disabled_chat.telegram_id }, text: '/eightball enable')
+          message_params.merge!(chat: { id: disabled_chat.telegram_id },
+                                text: '/eightball enable')
   end
   let(:on_command) do
     build :tg_message, :command_empty_eightball,
-                       message_params.merge!(chat: { id: disabled_chat.telegram_id }, text: '/eightball on')
+          message_params.merge!(chat: { id: disabled_chat.telegram_id },
+                                text: '/eightball on')
   end
 
   it 'has message model trait' do
diff --git a/spec/processors/message_processor/me_spec.rb b/spec/processors/message_processor/me_spec.rb
index 4f0d581..07ed7af 100644
--- a/spec/processors/message_processor/me_spec.rb
+++ b/spec/processors/message_processor/me_spec.rb
@@ -43,7 +43,7 @@
     subject(:result) { described_class.new(empty_me).process }
 
     it 'replies with predefined answers' do
-      replies = I18n.t('.me').map { |r| "<a href='tg://user?id=#{user.id}'>#{user.username}</a> #{r}"}
+      replies = I18n.t('.me').map { |r| "<a href='tg://user?id=#{user.id}'>#{user.username}</a> #{r}" }
       expect(replies).to include result[:send_message][:text]
     end
   end
diff --git a/spec/processors/message_processor/start_spec.rb b/spec/processors/message_processor/start_spec.rb
index 94722e9..172566b 100644
--- a/spec/processors/message_processor/start_spec.rb
+++ b/spec/processors/message_processor/start_spec.rb
@@ -26,10 +26,6 @@
       expect(described_class.new(ping).responds?).to eq false
     end
 
-    it 'non /start command' do
-      expect(described_class.new(ping).responds?).to eq false
-    end
-
     it 'empty text' do
       expect(described_class.new(picture).responds?).to eq false
     end
diff --git a/spec/processors/message_processor/stop_spec.rb b/spec/processors/message_processor/stop_spec.rb
index 240ee78..d54f1fa 100644
--- a/spec/processors/message_processor/stop_spec.rb
+++ b/spec/processors/message_processor/stop_spec.rb
@@ -26,10 +26,6 @@
       expect(described_class.new(ping).responds?).to eq false
     end
 
-    it 'non /stop command' do
-      expect(described_class.new(ping).responds?).to eq false
-    end
-
     it 'empty text' do
       expect(described_class.new(picture).responds?).to eq false
     end
@@ -42,7 +38,7 @@
   it "doesn't disable chat by regular user" do
     expect do
       described_class.new(user_stop).process
-       chat.reload
+      chat.reload
     end.not_to change(chat.reload, :active_at)
   end
 
diff --git a/spec/processors/message_processor/winner_spec.rb b/spec/processors/message_processor/winner_spec.rb
index 2a51303..b6d1d3a 100644
--- a/spec/processors/message_processor/winner_spec.rb
+++ b/spec/processors/message_processor/winner_spec.rb
@@ -10,7 +10,7 @@
   let(:message_params) { { chat: { id: chat.telegram_id }, from: { id: user.id } } }
   let(:message)        { build :tg_message, message_params }
   let(:chat)           { create :chat, :disabled_random }
-  let(:participation)  { create :participation, user: user, chat: chat }
+  let(:participation)  { create :participation, user:, chat: }
 
   before { participation }
 
@@ -50,7 +50,7 @@
     describe 'responds with send_message' do
       subject(:send_message) { process_method[:send_message] }
 
-      let(:winners) { create_list :winner, 15, chat: chat }
+      let(:winners) { create_list :winner, 15, chat: }
 
       it 'chat_id' do
         expect(send_message[:chat_id]).to eq chat.telegram_id
@@ -80,7 +80,7 @@
                     .map { |(user, wins), idx| I18n.t('winner.top_line_html', position: idx + 1, user: user.to_s, score: wins) }
                     .join("\n")
           name = chat.winners.order(created_at: :desc).first.user.to_s
-          I18n.t('winner.winner_html', top: top, name: chat.winner, user: name)
+          I18n.t('winner.winner_html', top:, name: chat.winner, user: name)
         end
 
         before { winners }
@@ -98,7 +98,7 @@
     describe 'responds with send_message' do
       subject(:send_message) { process_method[:send_message] }
 
-      let(:participations) { create_list :participation, 15, chat: chat }
+      let(:participations) { create_list :participation, 15, chat: }
 
       it 'chat_id' do
         expect(send_message[:chat_id]).to eq chat.telegram_id
@@ -122,7 +122,7 @@
                   .map do |p, i|
                     I18n.t('winner.top_line_html', position: i + 1, user: p.user.to_s, score: p.score) if p.user.present?
                   end.compact.join("\n")
-        expected_result = I18n.t('winner.current_html', top: top)
+        expected_result = I18n.t('winner.current_html', top:)
 
         expect(send_message[:text]).to eq expected_result
       end
diff --git a/spec/support/web_mocks/telegram.rb b/spec/support/web_mocks/telegram.rb
index a7c339d..4d2e8c7 100644
--- a/spec/support/web_mocks/telegram.rb
+++ b/spec/support/web_mocks/telegram.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module WebMocks
   module Telegram
     class << self
diff --git a/spec/workers/idle_check_worker_spec.rb b/spec/workers/idle_check_worker_spec.rb
index e1691a7..ac30271 100644
--- a/spec/workers/idle_check_worker_spec.rb
+++ b/spec/workers/idle_check_worker_spec.rb
@@ -5,7 +5,7 @@
 RSpec.describe IdleCheckWorker, type: :worker do
   let(:chat)           { create :chat, active_at: Time.current }
   let(:inactive_chat)  { create :chat, active_at: 20.days.ago }
-  let(:participations) { create :participation, chat: chat }
+  let(:participations) { create :participation, chat: }
 
   it 'enqueues a worker' do
     expect { described_class.perform_async }
diff --git a/spec/workers/winner_gamble_worker_spec.rb b/spec/workers/winner_gamble_worker_spec.rb
index ed5c035..5ee9af2 100644
--- a/spec/workers/winner_gamble_worker_spec.rb
+++ b/spec/workers/winner_gamble_worker_spec.rb
@@ -4,7 +4,7 @@
 
 RSpec.describe WinnerGambleWorker, type: :worker do
   let(:chat)           { create :chat }
-  let(:participations) { create :participation, chat: chat }
+  let(:participations) { create :participation, chat: }
 
   it 'enqueues a worker' do
     expect { described_class.perform_async }