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-rw-r--r--lib/active_record/database_tasks_extensions.rb2
-rw-r--r--lib/assets/wordmark.light.css4
-rw-r--r--lib/chewy/strategy/bypass_with_warning.rb12
-rw-r--r--lib/cli.rb4
-rw-r--r--lib/mastodon/accounts_cli.rb66
-rw-r--r--lib/mastodon/cli_helper.rb24
-rw-r--r--lib/mastodon/domains_cli.rb83
-rw-r--r--lib/mastodon/emoji_cli.rb4
-rw-r--r--lib/mastodon/feeds_cli.rb6
-rw-r--r--lib/mastodon/ip_blocks_cli.rb12
-rw-r--r--lib/mastodon/maintenance_cli.rb94
-rw-r--r--lib/mastodon/media_cli.rb18
-rw-r--r--lib/mastodon/migration_helpers.rb4
-rw-r--r--lib/mastodon/migration_warning.rb55
-rw-r--r--lib/mastodon/premailer_webpack_strategy.rb2
-rw-r--r--lib/mastodon/redis_config.rb22
-rw-r--r--lib/mastodon/search_cli.rb12
-rw-r--r--lib/mastodon/sidekiq_middleware.rb4
-rw-r--r--lib/mastodon/snowflake.rb2
-rw-r--r--lib/mastodon/statuses_cli.rb4
-rw-r--r--lib/mastodon/upgrade_cli.rb18
-rw-r--r--lib/mastodon/version.rb2
-rw-r--r--lib/paperclip/attachment_extensions.rb10
-rw-r--r--lib/paperclip/color_extractor.rb36
-rw-r--r--lib/paperclip/gif_transcoder.rb6
-rw-r--r--lib/paperclip/type_corrector.rb2
-rw-r--r--lib/public_file_server_middleware.rb43
-rw-r--r--lib/rails/engine_extensions.rb4
-rw-r--r--lib/sanitize_ext/sanitize_config.rb39
-rw-r--r--lib/tasks/assets.rake14
-rw-r--r--lib/tasks/auto_annotate_models.rake70
-rw-r--r--lib/tasks/branding.rake4
-rw-r--r--lib/tasks/db.rake14
-rw-r--r--lib/tasks/emojis.rake10
-rw-r--r--lib/tasks/glitchsoc.rake8
-rw-r--r--lib/tasks/mastodon.rake74
-rw-r--r--lib/tasks/repo.rake10
-rw-r--r--lib/tasks/statistics.rake4
-rw-r--r--lib/tasks/tests.rake10
39 files changed, 486 insertions, 326 deletions
diff --git a/lib/active_record/database_tasks_extensions.rb b/lib/active_record/database_tasks_extensions.rb
index e274f476d..d52186113 100644
--- a/lib/active_record/database_tasks_extensions.rb
+++ b/lib/active_record/database_tasks_extensions.rb
@@ -11,7 +11,7 @@ module ActiveRecord
         ActiveRecord::Base.establish_connection(db_config)
         Mastodon::Snowflake.define_timestamp_id
 
-        original_load_schema.bind(self).call(db_config, *args)
+        original_load_schema.bind_call(self, db_config, *args)
 
         Mastodon::Snowflake.ensure_id_sequences_exist
       end
diff --git a/lib/assets/wordmark.light.css b/lib/assets/wordmark.light.css
index 9a601f972..b8c9993fd 100644
--- a/lib/assets/wordmark.light.css
+++ b/lib/assets/wordmark.light.css
@@ -1 +1,3 @@
-use { color: #000 !important; }
+use {
+  color: #000 !important;
+}
diff --git a/lib/chewy/strategy/bypass_with_warning.rb b/lib/chewy/strategy/bypass_with_warning.rb
new file mode 100644
index 000000000..eb6fbaab1
--- /dev/null
+++ b/lib/chewy/strategy/bypass_with_warning.rb
@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+module Chewy
+  class Strategy
+    class BypassWithWarning < Base
+      def update(...)
+        Rails.logger.warn 'Chewy update without a root strategy' unless @warning_issued
+        @warning_issued = true
+      end
+    end
+  end
+end
diff --git a/lib/cli.rb b/lib/cli.rb
index 35c00e736..ac235cf03 100644
--- a/lib/cli.rb
+++ b/lib/cli.rb
@@ -121,7 +121,7 @@ module Mastodon
 
       prompt.warn('Do NOT interrupt this process...')
 
-      delete_account = ->(account) do
+      delete_account = lambda do |account|
         payload = ActiveModelSerializers::SerializableResource.new(
           account,
           serializer: ActivityPub::DeleteActorSerializer,
@@ -131,7 +131,7 @@ module Mastodon
         json = Oj.dump(ActivityPub::LinkedDataSignature.new(payload).sign!(account))
 
         unless options[:dry_run]
-          ActivityPub::DeliveryWorker.push_bulk(inboxes) do |inbox_url|
+          ActivityPub::DeliveryWorker.push_bulk(inboxes, limit: 1_000) do |inbox_url|
             [json, account.id, inbox_url]
           end
 
diff --git a/lib/mastodon/accounts_cli.rb b/lib/mastodon/accounts_cli.rb
index 34afbc699..a6532541e 100644
--- a/lib/mastodon/accounts_cli.rb
+++ b/lib/mastodon/accounts_cli.rb
@@ -372,16 +372,16 @@ module Mastodon
     option :concurrency, type: :numeric, default: 5, aliases: [:c]
     option :verbose, type: :boolean, aliases: [:v]
     option :dry_run, type: :boolean
-    desc 'refresh [USERNAME]', 'Fetch remote user data and files'
+    desc 'refresh [USERNAMES]', 'Fetch remote user data and files'
     long_desc <<-LONG_DESC
       Fetch remote user data and files for one or multiple accounts.
 
       With the --all option, all remote accounts will be processed.
       Through the --domain option, this can be narrowed down to a
-      specific domain only. Otherwise, a single remote account must
-      be specified with USERNAME.
+      specific domain only. Otherwise, remote accounts must be
+      specified with space-separated USERNAMES.
     LONG_DESC
-    def refresh(username = nil)
+    def refresh(*usernames)
       dry_run = options[:dry_run] ? ' (DRY RUN)' : ''
 
       if options[:domain] || options[:all]
@@ -397,19 +397,25 @@ module Mastodon
         end
 
         say("Refreshed #{processed} accounts#{dry_run}", :green, true)
-      elsif username.present?
-        username, domain = username.split('@')
-        account = Account.find_remote(username, domain)
+      elsif !usernames.empty?
+        usernames.each do |user|
+          user, domain = user.split('@')
+          account = Account.find_remote(user, domain)
+
+          if account.nil?
+            say('No such account', :red)
+            exit(1)
+          end
 
-        if account.nil?
-          say('No such account', :red)
-          exit(1)
-        end
+          next if options[:dry_run]
 
-        unless options[:dry_run]
-          account.reset_avatar!
-          account.reset_header!
-          account.save
+          begin
+            account.reset_avatar!
+            account.reset_header!
+            account.save
+          rescue Mastodon::UnexpectedResponseError
+            say("Account failed: #{user}@#{domain}", :red)
+          end
         end
 
         say("OK#{dry_run}", :green)
@@ -490,14 +496,12 @@ module Mastodon
         scope = Account.where(id: ::Follow.where(account: account).select(:target_account_id))
 
         scope.find_each do |target_account|
-          begin
-            UnfollowService.new.call(account, target_account)
-          rescue => e
-            progress.log pastel.red("Error processing #{target_account.id}: #{e}")
-          ensure
-            progress.increment
-            processed += 1
-          end
+          UnfollowService.new.call(account, target_account)
+        rescue => e
+          progress.log pastel.red("Error processing #{target_account.id}: #{e}")
+        ensure
+          progress.increment
+          processed += 1
         end
 
         BootstrapTimelineWorker.perform_async(account.id)
@@ -507,14 +511,12 @@ module Mastodon
         scope = Account.where(id: ::Follow.where(target_account: account).select(:account_id))
 
         scope.find_each do |target_account|
-          begin
-            UnfollowService.new.call(target_account, account)
-          rescue => e
-            progress.log pastel.red("Error processing #{target_account.id}: #{e}")
-          ensure
-            progress.increment
-            processed += 1
-          end
+          UnfollowService.new.call(target_account, account)
+        rescue => e
+          progress.log pastel.red("Error processing #{target_account.id}: #{e}")
+        ensure
+          progress.increment
+          processed += 1
         end
       end
 
@@ -631,7 +633,7 @@ module Mastodon
           exit(1)
         end
 
-        unless options[:force] || migration.target_acount_id == account.moved_to_account_id
+        unless options[:force] || migration.target_account_id == account.moved_to_account_id
           say('The specified account is not redirecting to its last migration target. Use --force if you want to replay the migration anyway', :red)
           exit(1)
         end
diff --git a/lib/mastodon/cli_helper.rb b/lib/mastodon/cli_helper.rb
index a78a28e27..ab1351ae8 100644
--- a/lib/mastodon/cli_helper.rb
+++ b/lib/mastodon/cli_helper.rb
@@ -42,17 +42,17 @@ module Mastodon
 
         items.each do |item|
           futures << Concurrent::Future.execute(executor: pool) do
-            begin
-              if !progress.total.nil? && progress.progress + 1 > progress.total
-                # The number of items has changed between start and now,
-                # since there is no good way to predict the final count from
-                # here, just change the progress bar to an indeterminate one
+            if !progress.total.nil? && progress.progress + 1 > progress.total
+              # The number of items has changed between start and now,
+              # since there is no good way to predict the final count from
+              # here, just change the progress bar to an indeterminate one
 
-                progress.total = nil
-              end
+              progress.total = nil
+            end
 
-              progress.log("Processing #{item.id}") if options[:verbose]
+            progress.log("Processing #{item.id}") if options[:verbose]
 
+            Chewy.strategy(:mastodon) do
               result = ActiveRecord::Base.connection_pool.with_connection do
                 yield(item)
               ensure
@@ -61,11 +61,11 @@ module Mastodon
               end
 
               aggregate.increment(result) if result.is_a?(Integer)
-            rescue => e
-              progress.log pastel.red("Error processing #{item.id}: #{e}")
-            ensure
-              progress.increment
             end
+          rescue => e
+            progress.log pastel.red("Error processing #{item.id}: #{e}")
+          ensure
+            progress.increment
           end
         end
 
diff --git a/lib/mastodon/domains_cli.rb b/lib/mastodon/domains_cli.rb
index 77364ffbb..05f08f462 100644
--- a/lib/mastodon/domains_cli.rb
+++ b/lib/mastodon/domains_cli.rb
@@ -18,6 +18,8 @@ module Mastodon
     option :dry_run, type: :boolean
     option :limited_federation_mode, type: :boolean
     option :by_uri, type: :boolean
+    option :include_subdomains, type: :boolean
+    option :purge_domain_blocks, type: :boolean
     desc 'purge [DOMAIN...]', 'Remove accounts from a DOMAIN without a trace'
     long_desc <<-LONG_DESC
       Remove all accounts from a given DOMAIN without leaving behind any
@@ -33,40 +35,75 @@ module Mastodon
       that has the handle `foo@bar.com` but whose profile is at the URL
       `https://mastodon-bar.com/users/foo`, would be purged by either
       `tootctl domains purge bar.com` or `tootctl domains purge --by-uri mastodon-bar.com`.
+
+      When the --include-subdomains option is given, not only DOMAIN is deleted, but all
+      subdomains as well. Note that this may be considerably slower.
+
+      When the --purge-domain-blocks option is given, also purge matching domain blocks.
     LONG_DESC
     def purge(*domains)
-      dry_run = options[:dry_run] ? ' (DRY RUN)' : ''
-
-      scope = begin
-        if options[:limited_federation_mode]
-          Account.remote.where.not(domain: DomainAllow.pluck(:domain))
-        elsif !domains.empty?
-          if options[:by_uri]
-            domains.map { |domain| Account.remote.where(Account.arel_table[:uri].matches("https://#{domain}/%", false, true)) }.reduce(:or)
-          else
-            Account.remote.where(domain: domains)
-          end
+      dry_run            = options[:dry_run] ? ' (DRY RUN)' : ''
+      domains            = domains.map { |domain| TagManager.instance.normalize_domain(domain) }
+      account_scope      = Account.none
+      domain_block_scope = DomainBlock.none
+      emoji_scope        = CustomEmoji.none
+
+      # Sanity check on command arguments
+      if options[:limited_federation_mode] && !domains.empty?
+        say('DOMAIN parameter not supported with --limited-federation-mode', :red)
+        exit(1)
+      elsif domains.empty? && !options[:limited_federation_mode]
+        say('No domain(s) given', :red)
+        exit(1)
+      end
+
+      # Build scopes from command arguments
+      if options[:limited_federation_mode]
+        account_scope = Account.remote.where.not(domain: DomainAllow.select(:domain))
+        emoji_scope   = CustomEmoji.remote.where.not(domain: DomainAllow.select(:domain))
+      else
+        # Handle wildcard subdomains
+        subdomain_patterns = domains.filter_map { |domain| "%.#{Account.sanitize_sql_like(domain[2..])}" if domain.start_with?('*.') }
+        domains = domains.filter { |domain| !domain.start_with?('*.') }
+        # Handle --include-subdomains
+        subdomain_patterns += domains.map { |domain| "%.#{Account.sanitize_sql_like(domain)}" } if options[:include_subdomains]
+        uri_patterns = (domains.map { |domain| Account.sanitize_sql_like(domain) } + subdomain_patterns).map { |pattern| "https://#{pattern}/%" }
+
+        if options[:purge_domain_blocks]
+          domain_block_scope = DomainBlock.where(domain: domains)
+          domain_block_scope = domain_block_scope.or(DomainBlock.where(DomainBlock.arel_table[:domain].matches_any(subdomain_patterns))) unless subdomain_patterns.empty?
+        end
+
+        if options[:by_uri]
+          account_scope = Account.remote.where(Account.arel_table[:uri].matches_any(uri_patterns, false, true))
+          emoji_scope   = CustomEmoji.remote.where(CustomEmoji.arel_table[:uri].matches_any(uri_patterns, false, true))
         else
-          say('No domain(s) given', :red)
-          exit(1)
+          account_scope = Account.remote.where(domain: domains)
+          account_scope = account_scope.or(Account.remote.where(Account.arel_table[:domain].matches_any(subdomain_patterns))) unless subdomain_patterns.empty?
+          emoji_scope   = CustomEmoji.where(domain: domains)
+          emoji_scope   = emoji_scope.or(CustomEmoji.remote.where(CustomEmoji.arel_table[:uri].matches_any(subdomain_patterns))) unless subdomain_patterns.empty?
         end
       end
 
-      processed, = parallelize_with_progress(scope) do |account|
+      # Actually perform the deletions
+      processed, = parallelize_with_progress(account_scope) do |account|
         DeleteAccountService.new.call(account, reserve_username: false, skip_side_effects: true) unless options[:dry_run]
       end
 
-      DomainBlock.where(domain: domains).destroy_all unless options[:dry_run]
-
       say("Removed #{processed} accounts#{dry_run}", :green)
 
-      custom_emojis = CustomEmoji.where(domain: domains)
-      custom_emojis_count = custom_emojis.count
-      custom_emojis.destroy_all unless options[:dry_run]
+      if options[:purge_domain_blocks]
+        domain_block_count = domain_block_scope.count
+        domain_block_scope.in_batches.destroy_all unless options[:dry_run]
+        say("Removed #{domain_block_count} domain blocks#{dry_run}", :green)
+      end
+
+      custom_emojis_count = emoji_scope.count
+      emoji_scope.in_batches.destroy_all unless options[:dry_run]
 
       Instance.refresh unless options[:dry_run]
 
-      say("Removed #{custom_emojis_count} custom emojis", :green)
+      say("Removed #{custom_emojis_count} custom emojis#{dry_run}", :green)
     end
 
     option :concurrency, type: :numeric, default: 50, aliases: [:c]
@@ -102,7 +139,7 @@ module Mastodon
 
       pool = Concurrent::ThreadPoolExecutor.new(min_threads: 0, max_threads: options[:concurrency], idletime: 10, auto_terminate: true, max_queue: 0)
 
-      work_unit = ->(domain) do
+      work_unit = lambda do |domain|
         next if stats.key?(domain)
         next if options[:exclude_suspended] && domain.match?(blocked_domains)
 
@@ -111,6 +148,7 @@ module Mastodon
         begin
           Request.new(:get, "https://#{domain}/api/v1/instance").perform do |res|
             next unless res.code == 200
+
             stats[domain] = Oj.load(res.to_s)
           end
 
@@ -124,9 +162,10 @@ module Mastodon
 
           Request.new(:get, "https://#{domain}/api/v1/instance/activity").perform do |res|
             next unless res.code == 200
+
             stats[domain]['activity'] = Oj.load(res.to_s)
           end
-        rescue StandardError
+        rescue
           failed.increment
         ensure
           processed.increment
diff --git a/lib/mastodon/emoji_cli.rb b/lib/mastodon/emoji_cli.rb
index a3e947909..88065c2a3 100644
--- a/lib/mastodon/emoji_cli.rb
+++ b/lib/mastodon/emoji_cli.rb
@@ -49,7 +49,7 @@ module Mastodon
           next if filename.start_with?('._')
 
           shortcode    = [options[:prefix], filename, options[:suffix]].compact.join
-          custom_emoji = CustomEmoji.local.find_by("LOWER(shortcode) = ?", shortcode.downcase)
+          custom_emoji = CustomEmoji.local.find_by('LOWER(shortcode) = ?', shortcode.downcase)
 
           if custom_emoji && !options[:overwrite]
             skipped += 1
@@ -68,7 +68,7 @@ module Mastodon
             failed += 1
             say('Failure/Error: ', :red)
             say(entry.full_name)
-            say('    ' + custom_emoji.errors[:image].join(', '), :red)
+            say("    #{custom_emoji.errors[:image].join(', ')}", :red)
           end
         end
       end
diff --git a/lib/mastodon/feeds_cli.rb b/lib/mastodon/feeds_cli.rb
index 428d63a44..fcfb48740 100644
--- a/lib/mastodon/feeds_cli.rb
+++ b/lib/mastodon/feeds_cli.rb
@@ -53,11 +53,7 @@ module Mastodon
     desc 'clear', 'Remove all home and list feeds from Redis'
     def clear
       keys = redis.keys('feed:*')
-
-      redis.pipelined do
-        keys.each { |key| redis.del(key) }
-      end
-
+      redis.del(keys)
       say('OK', :green)
     end
   end
diff --git a/lib/mastodon/ip_blocks_cli.rb b/lib/mastodon/ip_blocks_cli.rb
index 5c38c1aca..08939c092 100644
--- a/lib/mastodon/ip_blocks_cli.rb
+++ b/lib/mastodon/ip_blocks_cli.rb
@@ -79,13 +79,11 @@ module Mastodon
       skipped   = 0
 
       addresses.each do |address|
-        ip_blocks = begin
-          if options[:force]
-            IpBlock.where('ip >>= ?', address)
-          else
-            IpBlock.where('ip <<= ?', address)
-          end
-        end
+        ip_blocks = if options[:force]
+                      IpBlock.where('ip >>= ?', address)
+                    else
+                      IpBlock.where('ip <<= ?', address)
+                    end
 
         if ip_blocks.empty?
           say("#{address} is not yet blocked", :yellow)
diff --git a/lib/mastodon/maintenance_cli.rb b/lib/mastodon/maintenance_cli.rb
index 85937da81..ff8f6ddda 100644
--- a/lib/mastodon/maintenance_cli.rb
+++ b/lib/mastodon/maintenance_cli.rb
@@ -13,8 +13,8 @@ module Mastodon
       true
     end
 
-    MIN_SUPPORTED_VERSION = 2019_10_01_213028 # rubocop:disable Style/NumericLiterals
-    MAX_SUPPORTED_VERSION = 2022_11_04_133904 # rubocop:disable Style/NumericLiterals
+    MIN_SUPPORTED_VERSION = 2019_10_01_213028
+    MAX_SUPPORTED_VERSION = 2022_11_04_133904
 
     # Stubs to enjoy ActiveRecord queries while not depending on a particular
     # version of the code/database
@@ -98,11 +98,9 @@ module Mastodon
 
         owned_classes.each do |klass|
           klass.where(account_id: other_account.id).find_each do |record|
-            begin
-              record.update_attribute(:account_id, id)
-            rescue ActiveRecord::RecordNotUnique
-              next
-            end
+            record.update_attribute(:account_id, id)
+          rescue ActiveRecord::RecordNotUnique
+            next
           end
         end
 
@@ -111,11 +109,9 @@ module Mastodon
 
         target_classes.each do |klass|
           klass.where(target_account_id: other_account.id).find_each do |record|
-            begin
-              record.update_attribute(:target_account_id, id)
-            rescue ActiveRecord::RecordNotUnique
-              next
-            end
+            record.update_attribute(:target_account_id, id)
+          rescue ActiveRecord::RecordNotUnique
+            next
           end
         end
 
@@ -209,7 +205,7 @@ module Mastodon
       end
 
       @prompt.say 'Restoring index_accounts_on_username_and_domain_lower…'
-      if ActiveRecord::Migrator.current_version < 20200620164023 # rubocop:disable Style/NumericLiterals
+      if ActiveRecord::Migrator.current_version < 2020_06_20_164023
         ActiveRecord::Base.connection.add_index :accounts, 'lower (username), lower(domain)', name: 'index_accounts_on_username_and_domain_lower', unique: true
       else
         ActiveRecord::Base.connection.add_index :accounts, "lower (username), COALESCE(lower(domain), '')", name: 'index_accounts_on_username_and_domain_lower', unique: true
@@ -252,7 +248,7 @@ module Mastodon
         end
       end
 
-      if ActiveRecord::Migrator.current_version < 20220118183010 # rubocop:disable Style/NumericLiterals
+      if ActiveRecord::Migrator.current_version < 2022_01_18_183010
         ActiveRecord::Base.connection.select_all("SELECT string_agg(id::text, ',') AS ids FROM users WHERE remember_token IS NOT NULL GROUP BY remember_token HAVING count(*) > 1").each do |row|
           users = User.where(id: row['ids'].split(',')).sort_by(&:updated_at).reverse.drop(1)
           @prompt.warn "Unsetting remember token for those accounts: #{users.map(&:account).map(&:acct).join(', ')}"
@@ -275,9 +271,9 @@ module Mastodon
       @prompt.say 'Restoring users indexes…'
       ActiveRecord::Base.connection.add_index :users, ['confirmation_token'], name: 'index_users_on_confirmation_token', unique: true
       ActiveRecord::Base.connection.add_index :users, ['email'], name: 'index_users_on_email', unique: true
-      ActiveRecord::Base.connection.add_index :users, ['remember_token'], name: 'index_users_on_remember_token', unique: true if ActiveRecord::Migrator.current_version < 20220118183010
+      ActiveRecord::Base.connection.add_index :users, ['remember_token'], name: 'index_users_on_remember_token', unique: true if ActiveRecord::Migrator.current_version < 2022_01_18_183010
 
-      if ActiveRecord::Migrator.current_version < 20220310060641 # rubocop:disable Style/NumericLiterals
+      if ActiveRecord::Migrator.current_version < 2022_03_10_060641
         ActiveRecord::Base.connection.add_index :users, ['reset_password_token'], name: 'index_users_on_reset_password_token', unique: true
       else
         ActiveRecord::Base.connection.add_index :users, ['reset_password_token'], name: 'index_users_on_reset_password_token', unique: true, where: 'reset_password_token IS NOT NULL', opclass: :text_pattern_ops
@@ -293,7 +289,7 @@ module Mastodon
       end
 
       @prompt.say 'Restoring account domain blocks indexes…'
-      ActiveRecord::Base.connection.add_index :account_domain_blocks, ['account_id', 'domain'], name: 'index_account_domain_blocks_on_account_id_and_domain', unique: true
+      ActiveRecord::Base.connection.add_index :account_domain_blocks, %w(account_id domain), name: 'index_account_domain_blocks_on_account_id_and_domain', unique: true
     end
 
     def deduplicate_account_identity_proofs!
@@ -307,7 +303,7 @@ module Mastodon
       end
 
       @prompt.say 'Restoring account identity proofs indexes…'
-      ActiveRecord::Base.connection.add_index :account_identity_proofs, ['account_id', 'provider', 'provider_username'], name: 'index_account_proofs_on_account_and_provider_and_username', unique: true
+      ActiveRecord::Base.connection.add_index :account_identity_proofs, %w(account_id provider provider_username), name: 'index_account_proofs_on_account_and_provider_and_username', unique: true
     end
 
     def deduplicate_announcement_reactions!
@@ -321,7 +317,7 @@ module Mastodon
       end
 
       @prompt.say 'Restoring announcement_reactions indexes…'
-      ActiveRecord::Base.connection.add_index :announcement_reactions, ['account_id', 'announcement_id', 'name'], name: 'index_announcement_reactions_on_account_id_and_announcement_id', unique: true
+      ActiveRecord::Base.connection.add_index :announcement_reactions, %w(account_id announcement_id name), name: 'index_announcement_reactions_on_account_id_and_announcement_id', unique: true
     end
 
     def deduplicate_conversations!
@@ -340,7 +336,7 @@ module Mastodon
       end
 
       @prompt.say 'Restoring conversations indexes…'
-      if ActiveRecord::Migrator.current_version < 20220307083603 # rubocop:disable Style/NumericLiterals
+      if ActiveRecord::Migrator.current_version < 2022_03_07_083603
         ActiveRecord::Base.connection.add_index :conversations, ['uri'], name: 'index_conversations_on_uri', unique: true
       else
         ActiveRecord::Base.connection.add_index :conversations, ['uri'], name: 'index_conversations_on_uri', unique: true, where: 'uri IS NOT NULL', opclass: :text_pattern_ops
@@ -363,7 +359,7 @@ module Mastodon
       end
 
       @prompt.say 'Restoring custom_emojis indexes…'
-      ActiveRecord::Base.connection.add_index :custom_emojis, ['shortcode', 'domain'], name: 'index_custom_emojis_on_shortcode_and_domain', unique: true
+      ActiveRecord::Base.connection.add_index :custom_emojis, %w(shortcode domain), name: 'index_custom_emojis_on_shortcode_and_domain', unique: true
     end
 
     def deduplicate_custom_emoji_categories!
@@ -457,7 +453,7 @@ module Mastodon
       end
 
       @prompt.say 'Restoring media_attachments indexes…'
-      if ActiveRecord::Migrator.current_version < 20220310060626 # rubocop:disable Style/NumericLiterals
+      if ActiveRecord::Migrator.current_version < 2022_03_10_060626
         ActiveRecord::Base.connection.add_index :media_attachments, ['shortcode'], name: 'index_media_attachments_on_shortcode', unique: true
       else
         ActiveRecord::Base.connection.add_index :media_attachments, ['shortcode'], name: 'index_media_attachments_on_shortcode', unique: true, where: 'shortcode IS NOT NULL', opclass: :text_pattern_ops
@@ -490,7 +486,7 @@ module Mastodon
       end
 
       @prompt.say 'Restoring statuses indexes…'
-      if ActiveRecord::Migrator.current_version < 20220310060706 # rubocop:disable Style/NumericLiterals
+      if ActiveRecord::Migrator.current_version < 2022_03_10_060706
         ActiveRecord::Base.connection.add_index :statuses, ['uri'], name: 'index_statuses_on_uri', unique: true
       else
         ActiveRecord::Base.connection.add_index :statuses, ['uri'], name: 'index_statuses_on_uri', unique: true, where: 'uri IS NOT NULL', opclass: :text_pattern_ops
@@ -512,7 +508,7 @@ module Mastodon
       end
 
       @prompt.say 'Restoring tags indexes…'
-      if ActiveRecord::Migrator.current_version < 20210421121431
+      if ActiveRecord::Migrator.current_version < 2021_04_21_121431
         ActiveRecord::Base.connection.add_index :tags, 'lower((name)::text)', name: 'index_tags_on_name_lower', unique: true
       else
         ActiveRecord::Base.connection.execute 'CREATE UNIQUE INDEX CONCURRENTLY index_tags_on_name_lower_btree ON tags (lower(name) text_pattern_ops)'
@@ -554,7 +550,7 @@ module Mastodon
       @prompt.warn 'All those accounts are distinct accounts but only the most recently-created one is fully-functional.'
 
       accounts.each_with_index do |account, idx|
-        @prompt.say '%2d. %s: created at: %s; updated at: %s; last logged in at: %s; statuses: %5d; last status at: %s' % [idx, account.username, account.created_at, account.updated_at, account.user&.last_sign_in_at&.to_s || 'N/A', account.account_stat&.statuses_count || 0, account.account_stat&.last_status_at || 'N/A']
+        @prompt.say format('%2d. %s: created at: %s; updated at: %s; last logged in at: %s; statuses: %5d; last status at: %s', idx, account.username, account.created_at, account.updated_at, account.user&.last_sign_in_at&.to_s || 'N/A', account.account_stat&.statuses_count || 0, account.account_stat&.last_status_at || 'N/A')
       end
 
       @prompt.say 'Please chose the one to keep unchanged, other ones will be automatically renamed.'
@@ -601,11 +597,9 @@ module Mastodon
       owned_classes = [ConversationMute, AccountConversation]
       owned_classes.each do |klass|
         klass.where(conversation_id: duplicate_conv.id).find_each do |record|
-          begin
-            record.update_attribute(:account_id, main_conv.id)
-          rescue ActiveRecord::RecordNotUnique
-            next
-          end
+          record.update_attribute(:account_id, main_conv.id)
+        rescue ActiveRecord::RecordNotUnique
+          next
         end
       end
     end
@@ -629,47 +623,37 @@ module Mastodon
       owned_classes << Bookmark if ActiveRecord::Base.connection.table_exists?(:bookmarks)
       owned_classes.each do |klass|
         klass.where(status_id: duplicate_status.id).find_each do |record|
-          begin
-            record.update_attribute(:status_id, main_status.id)
-          rescue ActiveRecord::RecordNotUnique
-            next
-          end
-        end
-      end
-
-      StatusPin.where(account_id: main_status.account_id, status_id: duplicate_status.id).find_each do |record|
-        begin
           record.update_attribute(:status_id, main_status.id)
         rescue ActiveRecord::RecordNotUnique
           next
         end
       end
 
+      StatusPin.where(account_id: main_status.account_id, status_id: duplicate_status.id).find_each do |record|
+        record.update_attribute(:status_id, main_status.id)
+      rescue ActiveRecord::RecordNotUnique
+        next
+      end
+
       Status.where(in_reply_to_id: duplicate_status.id).find_each do |record|
-        begin
-          record.update_attribute(:in_reply_to_id, main_status.id)
-        rescue ActiveRecord::RecordNotUnique
-          next
-        end
+        record.update_attribute(:in_reply_to_id, main_status.id)
+      rescue ActiveRecord::RecordNotUnique
+        next
       end
 
       Status.where(reblog_of_id: duplicate_status.id).find_each do |record|
-        begin
-          record.update_attribute(:reblog_of_id, main_status.id)
-        rescue ActiveRecord::RecordNotUnique
-          next
-        end
+        record.update_attribute(:reblog_of_id, main_status.id)
+      rescue ActiveRecord::RecordNotUnique
+        next
       end
     end
 
     def merge_tags!(main_tag, duplicate_tag)
       [FeaturedTag].each do |klass|
         klass.where(tag_id: duplicate_tag.id).find_each do |record|
-          begin
-            record.update_attribute(:tag_id, main_tag.id)
-          rescue ActiveRecord::RecordNotUnique
-            next
-          end
+          record.update_attribute(:tag_id, main_tag.id)
+        rescue ActiveRecord::RecordNotUnique
+          next
         end
       end
     end
diff --git a/lib/mastodon/media_cli.rb b/lib/mastodon/media_cli.rb
index 24cc98964..b2dfe58d5 100644
--- a/lib/mastodon/media_cli.rb
+++ b/lib/mastodon/media_cli.rb
@@ -35,7 +35,6 @@ module Mastodon
       follow status. By default, only accounts that are not followed by or
       following anyone locally are pruned.
     DESC
-    # rubocop:disable Metrics/PerceivedComplexity
     def remove
       if options[:prune_profiles] && options[:remove_headers]
         say('--prune-profiles and --remove-headers should not be specified simultaneously', :red, true)
@@ -116,13 +115,11 @@ module Mastodon
 
         loop do
           objects = begin
-            begin
-              bucket.objects(start_after: last_key, prefix: prefix).limit(1000).map { |x| x }
-            rescue => e
-              progress.log(pastel.red("Error fetching list of files: #{e}"))
-              progress.log("If you want to continue from this point, add --start-after=#{last_key} to your command") if last_key
-              break
-            end
+            bucket.objects(start_after: last_key, prefix: prefix).limit(1000).map { |x| x }
+          rescue => e
+            progress.log(pastel.red("Error fetching list of files: #{e}"))
+            progress.log("If you want to continue from this point, add --start-after=#{last_key} to your command") if last_key
+            break
           end
 
           break if objects.empty?
@@ -226,7 +223,6 @@ module Mastodon
 
       say("Removed #{removed} orphans (approx. #{number_to_human_size(reclaimed_bytes)})#{dry_run}", :green, true)
     end
-    # rubocop:enable Metrics/PerceivedComplexity
 
     option :account, type: :string
     option :domain, type: :string
@@ -277,9 +273,7 @@ module Mastodon
         exit(1)
       end
 
-      if options[:days].present?
-        scope = scope.where('media_attachments.id > ?', Mastodon::Snowflake.id_at(options[:days].days.ago, with_random: false))
-      end
+      scope = scope.where('media_attachments.id > ?', Mastodon::Snowflake.id_at(options[:days].days.ago, with_random: false)) if options[:days].present?
 
       processed, aggregate = parallelize_with_progress(scope) do |media_attachment|
         next if media_attachment.remote_url.blank? || (!options[:force] && media_attachment.file_file_name.present?)
diff --git a/lib/mastodon/migration_helpers.rb b/lib/mastodon/migration_helpers.rb
index 2ab8150ec..5a252b351 100644
--- a/lib/mastodon/migration_helpers.rb
+++ b/lib/mastodon/migration_helpers.rb
@@ -289,8 +289,6 @@ module Mastodon
     # determines this method to be too complex while there's no way to make it
     # less "complex" without introducing extra methods (which actually will
     # make things _more_ complex).
-    #
-    # rubocop: disable Metrics/AbcSize
     def update_column_in_batches(table_name, column, value)
       if transaction_open?
         raise 'update_column_in_batches can not be run inside a transaction, ' \
@@ -573,7 +571,7 @@ module Mastodon
             o.conname as name,
             o.confdeltype as on_delete
           from pg_constraint o
-          left join pg_class f on f.oid = o.confrelid 
+          left join pg_class f on f.oid = o.confrelid
           left join pg_class c on c.oid = o.conrelid
           left join pg_class m on m.oid = o.conrelid
           where o.contype = 'f'
diff --git a/lib/mastodon/migration_warning.rb b/lib/mastodon/migration_warning.rb
new file mode 100644
index 000000000..227f6705d
--- /dev/null
+++ b/lib/mastodon/migration_warning.rb
@@ -0,0 +1,55 @@
+# frozen_string_literal: true
+
+module Mastodon
+  module MigrationWarning
+    WARNING_SECONDS = 10
+
+    DEFAULT_WARNING = <<~WARNING_MESSAGE
+      WARNING: This migration may take a *long* time for large instances.
+      It will *not* lock tables for any significant time, but it may run
+      for a very long time. We will pause for #{WARNING_SECONDS} seconds to allow you to
+      interrupt this migration if you are not ready.
+    WARNING_MESSAGE
+
+    def migration_duration_warning(explanation = nil)
+      return unless valid_environment?
+
+      announce_warning(explanation)
+
+      announce_countdown
+    end
+
+    private
+
+    def announce_countdown
+      WARNING_SECONDS.downto(1) do |i|
+        say "Continuing in #{i} second#{i == 1 ? '' : 's'}...", true
+        sleep 1
+      end
+    end
+
+    def valid_environment?
+      $stdout.isatty && Rails.env.production?
+    end
+
+    def announce_warning(explanation)
+      announce_message prepare_message(explanation)
+    end
+
+    def announce_message(text)
+      say ''
+      text.each_line do |line|
+        say(line)
+      end
+      say ''
+    end
+
+    def prepare_message(explanation)
+      if explanation.blank?
+        DEFAULT_WARNING
+      else
+        DEFAULT_WARNING + "\n#{explanation}"
+      end
+    end
+  end
+end
diff --git a/lib/mastodon/premailer_webpack_strategy.rb b/lib/mastodon/premailer_webpack_strategy.rb
index 56ef09c1a..5c297d4d0 100644
--- a/lib/mastodon/premailer_webpack_strategy.rb
+++ b/lib/mastodon/premailer_webpack_strategy.rb
@@ -13,7 +13,7 @@ module PremailerWebpackStrategy
             HTTP.get(url).to_s
           else
             url = url[1..-1] if url.start_with?('/')
-            File.read(Rails.root.join('public', url))
+            Rails.public_path.join(url).read
           end
 
     css.gsub(/url\(\//, "url(#{asset_host}/")
diff --git a/lib/mastodon/redis_config.rb b/lib/mastodon/redis_config.rb
index 3522fa11e..2dbe76f83 100644
--- a/lib/mastodon/redis_config.rb
+++ b/lib/mastodon/redis_config.rb
@@ -1,17 +1,17 @@
 # frozen_string_literal: true
 
 def setup_redis_env_url(prefix = nil, defaults = true)
-  prefix = prefix.to_s.upcase + '_' unless prefix.nil?
+  prefix = "#{prefix.to_s.upcase}_" unless prefix.nil?
   prefix = '' if prefix.nil?
 
-  return if ENV[prefix + 'REDIS_URL'].present?
+  return if ENV["#{prefix}REDIS_URL"].present?
 
-  password = ENV.fetch(prefix + 'REDIS_PASSWORD') { '' if defaults }
-  host     = ENV.fetch(prefix + 'REDIS_HOST') { 'localhost' if defaults }
-  port     = ENV.fetch(prefix + 'REDIS_PORT') { 6379 if defaults }
-  db       = ENV.fetch(prefix + 'REDIS_DB') { 0 if defaults }
+  password = ENV.fetch("#{prefix}REDIS_PASSWORD") { '' if defaults }
+  host     = ENV.fetch("#{prefix}REDIS_HOST") { 'localhost' if defaults }
+  port     = ENV.fetch("#{prefix}REDIS_PORT") { 6379 if defaults }
+  db       = ENV.fetch("#{prefix}REDIS_DB") { 0 if defaults }
 
-  ENV[prefix + 'REDIS_URL'] = begin
+  ENV["#{prefix}REDIS_URL"] = begin
     if [password, host, port, db].all?(&:nil?)
       ENV['REDIS_URL']
     else
@@ -27,7 +27,7 @@ setup_redis_env_url(:cache, false)
 setup_redis_env_url(:sidekiq, false)
 
 namespace         = ENV.fetch('REDIS_NAMESPACE', nil)
-cache_namespace   = namespace ? namespace + '_cache' : 'cache'
+cache_namespace   = namespace ? "#{namespace}_cache" : 'cache'
 sidekiq_namespace = namespace
 
 REDIS_CACHE_PARAMS = {
@@ -35,7 +35,7 @@ REDIS_CACHE_PARAMS = {
   url: ENV['CACHE_REDIS_URL'],
   expires_in: 10.minutes,
   namespace: cache_namespace,
-  pool_size: Sidekiq.server? ? Sidekiq.options[:concurrency] : Integer(ENV['MAX_THREADS'] || 5),
+  pool_size: Sidekiq.server? ? Sidekiq[:concurrency] : Integer(ENV['MAX_THREADS'] || 5),
   pool_timeout: 5,
   connect_timeout: 5,
 }.freeze
@@ -46,6 +46,4 @@ REDIS_SIDEKIQ_PARAMS = {
   namespace: sidekiq_namespace,
 }.freeze
 
-if Rails.env.test?
-  ENV['REDIS_NAMESPACE'] = "mastodon_test#{ENV['TEST_ENV_NUMBER']}"
-end
+ENV['REDIS_NAMESPACE'] = "mastodon_test#{ENV['TEST_ENV_NUMBER']}" if Rails.env.test?
diff --git a/lib/mastodon/search_cli.rb b/lib/mastodon/search_cli.rb
index b206854ab..31e9a3d5a 100644
--- a/lib/mastodon/search_cli.rb
+++ b/lib/mastodon/search_cli.rb
@@ -43,13 +43,11 @@ module Mastodon
         exit(1)
       end
 
-      indices = begin
-        if options[:only]
-          options[:only].map { |str| "#{str.camelize}Index".constantize }
-        else
-          INDICES
-        end
-      end
+      indices = if options[:only]
+                  options[:only].map { |str| "#{str.camelize}Index".constantize }
+                else
+                  INDICES
+                end
 
       pool      = Concurrent::FixedThreadPool.new(options[:concurrency], max_queue: options[:concurrency] * 10)
       importers = indices.index_with { |index| "Importer::#{index.name}Importer".constantize.new(batch_size: options[:batch_size], executor: pool) }
diff --git a/lib/mastodon/sidekiq_middleware.rb b/lib/mastodon/sidekiq_middleware.rb
index c75e8401f..9832e1a27 100644
--- a/lib/mastodon/sidekiq_middleware.rb
+++ b/lib/mastodon/sidekiq_middleware.rb
@@ -3,8 +3,8 @@
 class Mastodon::SidekiqMiddleware
   BACKTRACE_LIMIT = 3
 
-  def call(*)
-    yield
+  def call(*, &block)
+    Chewy.strategy(:mastodon, &block)
   rescue Mastodon::HostValidationError
     # Do not retry
   rescue => e
diff --git a/lib/mastodon/snowflake.rb b/lib/mastodon/snowflake.rb
index fe0dc1722..8030288af 100644
--- a/lib/mastodon/snowflake.rb
+++ b/lib/mastodon/snowflake.rb
@@ -115,7 +115,7 @@ module Mastodon::Snowflake
         # And only those that are using timestamp_id.
         next unless (data = DEFAULT_REGEX.match(id_col.default_function))
 
-        seq_name = data[:seq_prefix] + '_id_seq'
+        seq_name = "#{data[:seq_prefix]}_id_seq"
 
         # If we were on Postgres 9.5+, we could do CREATE SEQUENCE IF
         # NOT EXISTS, but we can't depend on that. Instead, catch the
diff --git a/lib/mastodon/statuses_cli.rb b/lib/mastodon/statuses_cli.rb
index d4c2e6cf2..baab83e29 100644
--- a/lib/mastodon/statuses_cli.rb
+++ b/lib/mastodon/statuses_cli.rb
@@ -93,7 +93,7 @@ module Mastodon
         c.table_name = 'statuses_to_be_deleted'
       end
 
-      Object.const_set('StatusToBeDeleted', klass)
+      Object.const_set(:StatusToBeDeleted, klass)
 
       scope     = StatusToBeDeleted
       processed = 0
@@ -175,7 +175,7 @@ module Mastodon
         c.table_name = 'conversations_to_be_deleted'
       end
 
-      Object.const_set('ConversationsToBeDeleted', klass)
+      Object.const_set(:ConversationsToBeDeleted, klass)
 
       scope     = ConversationsToBeDeleted
       processed = 0
diff --git a/lib/mastodon/upgrade_cli.rb b/lib/mastodon/upgrade_cli.rb
index 570b7e6fa..2b60f9eee 100644
--- a/lib/mastodon/upgrade_cli.rb
+++ b/lib/mastodon/upgrade_cli.rb
@@ -50,16 +50,14 @@ module Mastodon
             styles << :original unless styles.include?(:original)
 
             styles.each do |style|
-              success = begin
-                case Paperclip::Attachment.default_options[:storage]
-                when :s3
-                  upgrade_storage_s3(progress, attachment, style)
-                when :fog
-                  upgrade_storage_fog(progress, attachment, style)
-                when :filesystem
-                  upgrade_storage_filesystem(progress, attachment, style)
-                end
-              end
+              success = case Paperclip::Attachment.default_options[:storage]
+                        when :s3
+                          upgrade_storage_s3(progress, attachment, style)
+                        when :fog
+                          upgrade_storage_fog(progress, attachment, style)
+                        when :filesystem
+                          upgrade_storage_filesystem(progress, attachment, style)
+                        end
 
               upgraded = true if style == :original && success
 
diff --git a/lib/mastodon/version.rb b/lib/mastodon/version.rb
index 3340d0bf5..603e2b88d 100644
--- a/lib/mastodon/version.rb
+++ b/lib/mastodon/version.rb
@@ -9,7 +9,7 @@ module Mastodon
     end
 
     def minor
-      0
+      1
     end
 
     def patch
diff --git a/lib/paperclip/attachment_extensions.rb b/lib/paperclip/attachment_extensions.rb
index d66a17623..7f82138aa 100644
--- a/lib/paperclip/attachment_extensions.rb
+++ b/lib/paperclip/attachment_extensions.rb
@@ -8,7 +8,7 @@ module Paperclip
 
     # monkey-patch to avoid unlinking too avoid unlinking source file too early
     # see https://github.com/kreeti/kt-paperclip/issues/64
-    def post_process_style(name, style) #:nodoc:
+    def post_process_style(name, style) # :nodoc:
       raise "Style #{name} has no processors defined." if style.processors.blank?
 
       intermediate_files = []
@@ -16,16 +16,16 @@ module Paperclip
       # if we're processing the original, close + unlink the source tempfile
       intermediate_files << original if name == :original
 
-      @queued_for_write[name] = style.processors.
-                                inject(original) do |file, processor|
+      @queued_for_write[name] = style.processors
+                                     .inject(original) do |file, processor|
         file = Paperclip.processor(processor).make(file, style.processor_options, self)
         intermediate_files << file unless file == original
         file
       end
 
       unadapted_file = @queued_for_write[name]
-      @queued_for_write[name] = Paperclip.io_adapters.
-                                for(@queued_for_write[name], @options[:adapter_options])
+      @queued_for_write[name] = Paperclip.io_adapters
+                                         .for(@queued_for_write[name], @options[:adapter_options])
       unadapted_file.close if unadapted_file.respond_to?(:close)
       @queued_for_write[name]
     rescue Paperclip::Errors::NotIdentifiedByImageMagickError => e
diff --git a/lib/paperclip/color_extractor.rb b/lib/paperclip/color_extractor.rb
index d3b8e1022..2e8dc04fd 100644
--- a/lib/paperclip/color_extractor.rb
+++ b/lib/paperclip/color_extractor.rb
@@ -79,8 +79,8 @@ module Paperclip
     private
 
     def w3c_contrast(color1, color2)
-      luminance1 = color1.to_xyz.y * 0.01 + 0.05
-      luminance2 = color2.to_xyz.y * 0.01 + 0.05
+      luminance1 = (color1.to_xyz.y * 0.01) + 0.05
+      luminance2 = (color2.to_xyz.y * 0.01) + 0.05
 
       if luminance1 > luminance2
         luminance1 / luminance2
@@ -109,11 +109,11 @@ module Paperclip
 
         case max
         when r
-          h = (g - b) / d + (g < b ? 6.0 : 0)
+          h = ((g - b) / d) + (g < b ? 6.0 : 0)
         when g
-          h = (b - r) / d + 2.0
+          h = ((b - r) / d) + 2.0
         when b
-          h = (r - g) / d + 4.0
+          h = ((r - g) / d) + 4.0
         end
 
         h /= 6.0
@@ -126,9 +126,9 @@ module Paperclip
       t += 1 if t.negative?
       t -= 1 if t > 1
 
-      return (p + (q - p) * 6 * t) if t < 1 / 6.0
+      return (p + ((q - p) * 6 * t)) if t < 1 / 6.0
       return q if t < 1 / 2.0
-      return (p + (q - p) * (2 / 3.0 - t) * 6) if t < 2 / 3.0
+      return (p + ((q - p) * ((2 / 3.0) - t) * 6)) if t < 2 / 3.0
 
       p
     end
@@ -147,11 +147,11 @@ module Paperclip
         g = l.to_f
         b = l.to_f # achromatic
       else
-        q = l < 0.5 ? l * (s + 1) : l + s - l * s
-        p = 2 * l - q
-        r = hue_to_rgb(p, q, h + 1 / 3.0)
+        q = l < 0.5 ? l * (s + 1) : l + s - (l * s)
+        p = (2 * l) - q
+        r = hue_to_rgb(p, q, h + (1 / 3.0))
         g = hue_to_rgb(p, q, h)
-        b = hue_to_rgb(p, q, h - 1 / 3.0)
+        b = hue_to_rgb(p, q, h - (1 / 3.0))
       end
 
       [(r * 255).round, (g * 255).round, (b * 255).round]
@@ -161,13 +161,11 @@ module Paperclip
     def lighten_or_darken(color, by)
       hue, saturation, light = rgb_to_hsl(color.r, color.g, color.b)
 
-      light = begin
-        if light < 50
-          [100, light + by].min
-        else
-          [0, light - by].max
-        end
-      end
+      light = if light < 50
+                [100, light + by].min
+              else
+                [0, light - by].max
+              end
 
       ColorDiff::Color::RGB.new(*hsl_to_rgb(hue, saturation, light))
     end
@@ -185,7 +183,7 @@ module Paperclip
     end
 
     def rgb_to_hex(rgb)
-      '#%02x%02x%02x' % [rgb.r, rgb.g, rgb.b]
+      format('#%02x%02x%02x', rgb.r, rgb.g, rgb.b)
     end
   end
 end
diff --git a/lib/paperclip/gif_transcoder.rb b/lib/paperclip/gif_transcoder.rb
index d14465c01..32bdb8a86 100644
--- a/lib/paperclip/gif_transcoder.rb
+++ b/lib/paperclip/gif_transcoder.rb
@@ -57,7 +57,7 @@ class GifReader
           end
 
           # Skip lzw min code size
-          raise InvalidValue unless s.read(1).unpack('C')[0] >= 2
+          raise InvalidValue unless s.read(1).unpack1('C') >= 2
 
           # Skip image data sub-blocks
           skip_sub_blocks!(s)
@@ -77,7 +77,7 @@ class GifReader
   private
 
   def skip_extension_block!(file)
-    if EXTENSION_LABELS.include?(file.read(1).unpack('C')[0])
+    if EXTENSION_LABELS.include?(file.read(1).unpack1('C'))
       block_size, = file.read(1).unpack('C')
       file.seek(block_size, IO::SEEK_CUR)
     end
@@ -109,7 +109,7 @@ module Paperclip
       final_file = Paperclip::Transcoder.make(file, options, attachment)
 
       if options[:style] == :original
-        attachment.instance.file_file_name    = File.basename(attachment.instance.file_file_name, '.*') + '.mp4'
+        attachment.instance.file_file_name    = "#{File.basename(attachment.instance.file_file_name, '.*')}.mp4"
         attachment.instance.file_content_type = 'video/mp4'
         attachment.instance.type              = MediaAttachment.types[:gifv]
       end
diff --git a/lib/paperclip/type_corrector.rb b/lib/paperclip/type_corrector.rb
index 17e2fc5da..030b98b12 100644
--- a/lib/paperclip/type_corrector.rb
+++ b/lib/paperclip/type_corrector.rb
@@ -7,7 +7,7 @@ module Paperclip
     def make
       return @file unless options[:format]
 
-      target_extension = '.' + options[:format]
+      target_extension = ".#{options[:format]}"
       extension        = File.extname(attachment.instance_read(:file_name))
 
       return @file unless options[:style] == :original && target_extension && extension != target_extension
diff --git a/lib/public_file_server_middleware.rb b/lib/public_file_server_middleware.rb
new file mode 100644
index 000000000..3799230a2
--- /dev/null
+++ b/lib/public_file_server_middleware.rb
@@ -0,0 +1,43 @@
+# frozen_string_literal: true
+
+require 'action_dispatch/middleware/static'
+
+class PublicFileServerMiddleware
+  SERVICE_WORKER_TTL = 7.days.to_i
+  CACHE_TTL          = 28.days.to_i
+
+  def initialize(app)
+    @app = app
+    @file_handler = ActionDispatch::FileHandler.new(Rails.application.paths['public'].first)
+  end
+
+  def call(env)
+    file = @file_handler.attempt(env)
+
+    # If the request is not a static file, move on!
+    return @app.call(env) if file.nil?
+
+    status, headers, response = file
+
+    # Set cache headers on static files. Some paths require different cache headers
+    headers['Cache-Control'] = begin
+      request_path = env['REQUEST_PATH']
+
+      if request_path.start_with?('/sw.js')
+        "public, max-age=#{SERVICE_WORKER_TTL}, must-revalidate"
+      elsif request_path.start_with?(paperclip_root_url)
+        "public, max-age=#{CACHE_TTL}, immutable"
+      else
+        "public, max-age=#{CACHE_TTL}, must-revalidate"
+      end
+    end
+
+    [status, headers, response]
+  end
+
+  private
+
+  def paperclip_root_url
+    ENV.fetch('PAPERCLIP_ROOT_URL', '/system')
+  end
+end
diff --git a/lib/rails/engine_extensions.rb b/lib/rails/engine_extensions.rb
index 4848b15f2..1f5c2cd6c 100644
--- a/lib/rails/engine_extensions.rb
+++ b/lib/rails/engine_extensions.rb
@@ -2,8 +2,8 @@ module Rails
   module EngineExtensions
     # Rewrite task loading code to filter digitalocean.rake task
     def run_tasks_blocks(app)
-      Railtie.instance_method(:run_tasks_blocks).bind(self).call(app)
-      paths["lib/tasks"].existent.reject { |ext| ext.end_with?('digitalocean.rake') }.sort.each { |ext| load(ext) }
+      Railtie.instance_method(:run_tasks_blocks).bind_call(self, app)
+      paths['lib/tasks'].existent.reject { |ext| ext.end_with?('digitalocean.rake') }.sort.each { |ext| load(ext) }
     end
   end
 end
diff --git a/lib/sanitize_ext/sanitize_config.rb b/lib/sanitize_ext/sanitize_config.rb
index 55eb17097..82834fd68 100644
--- a/lib/sanitize_ext/sanitize_config.rb
+++ b/lib/sanitize_ext/sanitize_config.rb
@@ -49,9 +49,9 @@ class Sanitize
         node.content = "[🖼  #{node['alt']}]"
       else
         url = node['href']
-        prefix = url.match(/\Ahttps?:\/\/(www\.)?/).to_s
+        prefix = url.match(%r{\Ahttps?://(www\.)?}).to_s
         text   = url[prefix.length, 30]
-        text   = text + "…" if url[prefix.length..-1].length > 30
+        text += '…' if url.length - prefix.length > 30
         node.content = "[🖼  #{text}]"
       end
     end
@@ -61,13 +61,11 @@ class Sanitize
 
       current_node = env[:node]
 
-      scheme = begin
-        if current_node['href'] =~ Sanitize::REGEX_PROTOCOL
-          Regexp.last_match(1).downcase
-        else
-          :relative
-        end
-      end
+      scheme = if current_node['href'] =~ Sanitize::REGEX_PROTOCOL
+                 Regexp.last_match(1).downcase
+               else
+                 :relative
+               end
 
       current_node.replace(Nokogiri::XML::Text.new(current_node.text, current_node.document)) unless LINK_PROTOCOLS.include?(scheme)
     end
@@ -76,12 +74,11 @@ class Sanitize
       elements: %w(p br span a abbr del pre blockquote code b strong u sub sup i em h1 h2 h3 h4 h5 ul ol li details summary),
 
       attributes: {
-        'a'          => %w(href rel class title),
-        'span'       => %w(class),
-        'abbr'       => %w(title),
+        'a' => %w(href rel class title),
+        'span' => %w(class),
         'blockquote' => %w(cite),
-        'ol'         => %w(start reversed),
-        'li'         => %w(value),
+        'ol' => %w(start reversed),
+        'li' => %w(value),
       },
 
       add_attributes: {
@@ -92,7 +89,7 @@ class Sanitize
       },
 
       protocols: {
-        'a'          => { 'href' => LINK_PROTOCOLS },
+        'a' => { 'href' => LINK_PROTOCOLS },
         'blockquote' => { 'cite' => LINK_PROTOCOLS },
       },
 
@@ -109,17 +106,17 @@ class Sanitize
 
       attributes: merge(
         RELAXED[:attributes],
-        'audio'  => %w(controls),
-        'embed'  => %w(height src type width),
+        'audio' => %w(controls),
+        'embed' => %w(height src type width),
         'iframe' => %w(allowfullscreen frameborder height scrolling src width),
         'source' => %w(src type),
-        'video'  => %w(controls height loop width),
-        'div'    => [:data]
+        'video' => %w(controls height loop width),
+        'div' => [:data]
       ),
 
       protocols: merge(
         RELAXED[:protocols],
-        'embed'  => { 'src' => HTTP_PROTOCOLS },
+        'embed' => { 'src' => HTTP_PROTOCOLS },
         'iframe' => { 'src' => HTTP_PROTOCOLS },
         'source' => { 'src' => HTTP_PROTOCOLS }
       )
@@ -130,7 +127,7 @@ class Sanitize
 
       node = env[:node]
 
-      rel = (node['rel'] || '').split(' ') & ['tag']
+      rel = (node['rel'] || '').split & ['tag']
       rel += ['nofollow', 'noopener', 'noreferrer'] unless TagManager.instance.local_url?(node['href'])
 
       if rel.empty?
diff --git a/lib/tasks/assets.rake b/lib/tasks/assets.rake
index 5931aae61..76e190f70 100644
--- a/lib/tasks/assets.rake
+++ b/lib/tasks/assets.rake
@@ -3,18 +3,18 @@
 namespace :assets do
   desc 'Generate static pages'
   task generate_static_pages: :environment do
-    class StaticApplicationController < ApplicationController
-      def current_user
-        nil
+    def render_static_page(action, dest:, **opts)
+      renderer = Class.new(ApplicationController) do
+        def current_user
+          nil
+        end
       end
-    end
 
-    def render_static_page(action, dest:, **opts)
-      html = StaticApplicationController.render(action, opts)
+      html = renderer.render(action, opts)
       File.write(dest, html)
     end
 
-    render_static_page 'errors/500', layout: 'error', dest: Rails.root.join('public', 'assets', '500.html')
+    render_static_page 'errors/500', layout: 'error', dest: Rails.public_path.join('assets', '500.html')
   end
 end
 
diff --git a/lib/tasks/auto_annotate_models.rake b/lib/tasks/auto_annotate_models.rake
index a374e33ad..4b5997920 100644
--- a/lib/tasks/auto_annotate_models.rake
+++ b/lib/tasks/auto_annotate_models.rake
@@ -3,42 +3,42 @@
 if Rails.env.development?
   task :set_annotation_options do
     Annotate.set_defaults(
-      'routes'                  => 'false',
-      'models'                  => 'true',
-      'position_in_routes'      => 'before',
-      'position_in_class'       => 'before',
-      'position_in_test'        => 'before',
-      'position_in_fixture'     => 'before',
-      'position_in_factory'     => 'before',
-      'position_in_serializer'  => 'before',
-      'show_foreign_keys'       => 'false',
-      'show_indexes'            => 'false',
-      'simple_indexes'          => 'false',
-      'model_dir'               => 'app/models',
-      'root_dir'                => '',
-      'include_version'         => 'false',
-      'require'                 => '',
-      'exclude_tests'           => 'true',
-      'exclude_fixtures'        => 'true',
-      'exclude_factories'       => 'true',
-      'exclude_serializers'     => 'true',
-      'exclude_scaffolds'       => 'true',
-      'exclude_controllers'     => 'true',
-      'exclude_helpers'         => 'true',
-      'ignore_model_sub_dir'    => 'false',
-      'ignore_columns'          => nil,
-      'ignore_routes'           => nil,
-      'ignore_unknown_models'   => 'false',
+      'routes' => 'false',
+      'models' => 'true',
+      'position_in_routes' => 'before',
+      'position_in_class' => 'before',
+      'position_in_test' => 'before',
+      'position_in_fixture' => 'before',
+      'position_in_factory' => 'before',
+      'position_in_serializer' => 'before',
+      'show_foreign_keys' => 'false',
+      'show_indexes' => 'false',
+      'simple_indexes' => 'false',
+      'model_dir' => 'app/models',
+      'root_dir' => '',
+      'include_version' => 'false',
+      'require' => '',
+      'exclude_tests' => 'true',
+      'exclude_fixtures' => 'true',
+      'exclude_factories' => 'true',
+      'exclude_serializers' => 'true',
+      'exclude_scaffolds' => 'true',
+      'exclude_controllers' => 'true',
+      'exclude_helpers' => 'true',
+      'ignore_model_sub_dir' => 'false',
+      'ignore_columns' => nil,
+      'ignore_routes' => nil,
+      'ignore_unknown_models' => 'false',
       'hide_limit_column_types' => 'integer,boolean',
-      'skip_on_db_migrate'      => 'false',
-      'format_bare'             => 'true',
-      'format_rdoc'             => 'false',
-      'format_markdown'         => 'false',
-      'sort'                    => 'false',
-      'force'                   => 'false',
-      'trace'                   => 'false',
-      'wrapper_open'            => nil,
-      'wrapper_close'           => nil
+      'skip_on_db_migrate' => 'false',
+      'format_bare' => 'true',
+      'format_rdoc' => 'false',
+      'format_markdown' => 'false',
+      'sort' => 'false',
+      'force' => 'false',
+      'trace' => 'false',
+      'wrapper_open' => nil,
+      'wrapper_close' => nil
     )
   end
 
diff --git a/lib/tasks/branding.rake b/lib/tasks/branding.rake
index 2eec7c9e1..d1c1c9ded 100644
--- a/lib/tasks/branding.rake
+++ b/lib/tasks/branding.rake
@@ -54,7 +54,7 @@ namespace :branding do
       rsvg_convert.run(size: size, input: favicon_source, output: output_path)
     end
 
-    convert.run(input: favicons, output: Rails.root.join('public', 'favicon.ico'))
+    convert.run(input: favicons, output: Rails.public_path.join('favicon.ico'))
 
     apple_icon_sizes.each do |size|
       rsvg_convert.run(size: size, input: app_icon_source, output: output_dest.join("apple-touch-icon-#{size}x#{size}.png"))
@@ -69,7 +69,7 @@ namespace :branding do
   task generate_app_badge: :environment do
     rsvg_convert = Terrapin::CommandLine.new('rsvg-convert', '--stylesheet :stylesheet -w :size -h :size --keep-aspect-ratio :input -o :output')
     badge_source = Rails.root.join('app', 'javascript', 'images', 'logo-symbol-icon.svg')
-    output_dest  = Rails.root.join('public')
+    output_dest  = Rails.public_path
     stylesheet   = Rails.root.join('lib', 'assets', 'wordmark.light.css')
 
     rsvg_convert.run(stylesheet: stylesheet, input: badge_source, size: 192, output: output_dest.join('badge.png'))
diff --git a/lib/tasks/db.rake b/lib/tasks/db.rake
index ca939fd1f..e8a64b8fb 100644
--- a/lib/tasks/db.rake
+++ b/lib/tasks/db.rake
@@ -4,16 +4,14 @@ namespace :db do
   namespace :migrate do
     desc 'Setup the db or migrate depending on state of db'
     task setup: :environment do
-      begin
-        if ActiveRecord::Migrator.current_version.zero?
-          Rake::Task['db:migrate'].invoke
-          Rake::Task['db:seed'].invoke
-        end
-      rescue ActiveRecord::NoDatabaseError
-        Rake::Task['db:setup'].invoke
-      else
+      if ActiveRecord::Migrator.current_version.zero?
         Rake::Task['db:migrate'].invoke
+        Rake::Task['db:seed'].invoke
       end
+    rescue ActiveRecord::NoDatabaseError
+      Rake::Task['db:setup'].invoke
+    else
+      Rake::Task['db:migrate'].invoke
     end
   end
 
diff --git a/lib/tasks/emojis.rake b/lib/tasks/emojis.rake
index 473aee9cc..fbb2e8d4f 100644
--- a/lib/tasks/emojis.rake
+++ b/lib/tasks/emojis.rake
@@ -1,12 +1,12 @@
 # frozen_string_literal: true
 
 def gen_border(codepoint, color)
-  input = Rails.root.join('public', 'emoji', "#{codepoint}.svg")
-  dest = Rails.root.join('public', 'emoji', "#{codepoint}_border.svg")
+  input = Rails.public_path.join('emoji', "#{codepoint}.svg")
+  dest = Rails.public_path.join('emoji', "#{codepoint}_border.svg")
   doc = File.open(input) { |f| Nokogiri::XML(f) }
   svg = doc.at_css('svg')
   if svg.key?('viewBox')
-    view_box = svg['viewBox'].split(' ').map(&:to_i)
+    view_box = svg['viewBox'].split.map(&:to_i)
     view_box[0] -= 2
     view_box[1] -= 2
     view_box[2] += 4
@@ -36,7 +36,7 @@ end
 
 def codepoints_to_unicode(codepoints)
   if codepoints.include?(' ')
-    codepoints.split(' ').map(&:hex).pack('U*')
+    codepoints.split.map(&:hex).pack('U*')
   else
     [codepoints.hex].pack('U')
   end
@@ -69,7 +69,7 @@ namespace :emojis do
       end
     end
 
-    existence_maps = grouped_codes.map { |c| c.index_with { |cc| File.exist?(Rails.root.join('public', 'emoji', "#{codepoints_to_filename(cc)}.svg")) } }
+    existence_maps = grouped_codes.map { |c| c.index_with { |cc| Rails.public_path.join('emoji', "#{codepoints_to_filename(cc)}.svg").exist? } }
     map = {}
 
     existence_maps.each do |group|
diff --git a/lib/tasks/glitchsoc.rake b/lib/tasks/glitchsoc.rake
index 79e864648..72558fa19 100644
--- a/lib/tasks/glitchsoc.rake
+++ b/lib/tasks/glitchsoc.rake
@@ -1,8 +1,12 @@
+# frozen_string_literal: true
+
 namespace :glitchsoc do
   desc 'Backfill local-only flag on statuses table'
   task backfill_local_only: :environment do
-    Status.local.where(local_only: nil).find_each do |st|
-      ActiveRecord::Base.logger.silence { st.update_attribute(:local_only, st.marked_local_only?) }
+    Status.local.where(local_only: nil).find_each do |status|
+      ActiveRecord::Base.logger.silence do
+        status.update_attribute(:local_only, status.marked_local_only?) # rubocop:disable Rails/SkipsModelValidations
+      end
     end
   end
 end
diff --git a/lib/tasks/mastodon.rake b/lib/tasks/mastodon.rake
index 32040feec..6c0e66922 100644
--- a/lib/tasks/mastodon.rake
+++ b/lib/tasks/mastodon.rake
@@ -92,7 +92,7 @@ namespace :mastodon do
           prompt.ok 'Database configuration works! 🎆'
           db_connection_works = true
           break
-        rescue StandardError => e
+        rescue => e
           prompt.error 'Database connection could not be established with this configuration, try again.'
           prompt.error e.message
           break unless prompt.yes?('Try again?')
@@ -132,7 +132,7 @@ namespace :mastodon do
           redis.ping
           prompt.ok 'Redis configuration works! 🎆'
           break
-        rescue StandardError => e
+        rescue => e
           prompt.error 'Redis connection could not be established with this configuration, try again.'
           prompt.error e.message
           break unless prompt.yes?('Try again?')
@@ -142,7 +142,7 @@ namespace :mastodon do
       prompt.say "\n"
 
       if prompt.yes?('Do you want to store uploaded files on the cloud?', default: false)
-        case prompt.select('Provider', ['DigitalOcean Spaces', 'Amazon S3', 'Wasabi', 'Minio', 'Google Cloud Storage'])
+        case prompt.select('Provider', ['DigitalOcean Spaces', 'Amazon S3', 'Wasabi', 'Minio', 'Google Cloud Storage', 'Storj DCS'])
         when 'DigitalOcean Spaces'
           env['S3_ENABLED'] = 'true'
           env['S3_PROTOCOL'] = 'https'
@@ -257,6 +257,42 @@ namespace :mastodon do
             q.required true
             q.modify :strip
           end
+        when 'Storj DCS'
+          env['S3_ENABLED']  = 'true'
+          env['S3_PROTOCOL'] = 'https'
+          env['S3_REGION']   = 'global'
+
+          env['S3_ENDPOINT'] = prompt.ask('Storj DCS endpoint URL:') do |q|
+            q.required true
+            q.default 'https://gateway.storjshare.io'
+            q.modify :strip
+          end
+
+          env['S3_PROTOCOL'] = env['S3_ENDPOINT'].start_with?('https') ? 'https' : 'http'
+          env['S3_HOSTNAME'] = env['S3_ENDPOINT'].gsub(/\Ahttps?:\/\//, '')
+
+          env['S3_BUCKET'] = prompt.ask('Storj DCS bucket name:') do |q|
+            q.required true
+            q.default "files.#{env['LOCAL_DOMAIN']}"
+            q.modify :strip
+          end
+
+          env['AWS_ACCESS_KEY_ID'] = prompt.ask('Storj Gateway access key (uplink share --register --readonly=false --not-after=none sj://bucket):') do |q|
+            q.required true
+            q.modify :strip
+          end
+
+          env['AWS_SECRET_ACCESS_KEY'] = prompt.ask('Storj Gateway secret key:') do |q|
+            q.required true
+            q.modify :strip
+          end
+
+          linksharing_access_key = prompt.ask('Storj Linksharing access key (uplink share --register --public --readonly=true --disallow-lists --not-after=none sj://bucket):') do |q|
+            q.required true
+            q.modify :strip
+          end
+          env['S3_ALIAS_HOST'] = "link.storjshare.io/raw/#{linksharing_access_key}/#{env['S3_BUCKET']}"
+
         when 'Google Cloud Storage'
           env['S3_ENABLED']             = 'true'
           env['S3_PROTOCOL']            = 'https'
@@ -363,14 +399,14 @@ namespace :mastodon do
           end
 
           ActionMailer::Base.smtp_settings = {
-            port:                 env['SMTP_PORT'],
-            address:              env['SMTP_SERVER'],
-            user_name:            env['SMTP_LOGIN'].presence,
-            password:             env['SMTP_PASSWORD'].presence,
-            domain:               env['LOCAL_DOMAIN'],
-            authentication:       env['SMTP_AUTH_METHOD'] == 'none' ? nil : env['SMTP_AUTH_METHOD'] || :plain,
-            openssl_verify_mode:  env['SMTP_OPENSSL_VERIFY_MODE'],
-            enable_starttls:      enable_starttls,
+            port: env['SMTP_PORT'],
+            address: env['SMTP_SERVER'],
+            user_name: env['SMTP_LOGIN'].presence,
+            password: env['SMTP_PASSWORD'].presence,
+            domain: env['LOCAL_DOMAIN'],
+            authentication: env['SMTP_AUTH_METHOD'] == 'none' ? nil : env['SMTP_AUTH_METHOD'] || :plain,
+            openssl_verify_mode: env['SMTP_OPENSSL_VERIFY_MODE'],
+            enable_starttls: enable_starttls,
             enable_starttls_auto: enable_starttls_auto,
           }
 
@@ -381,7 +417,7 @@ namespace :mastodon do
           mail = ActionMailer::Base.new.mail to: send_to, subject: 'Test', body: 'Mastodon SMTP configuration works!'
           mail.deliver
           break
-        rescue StandardError => e
+        rescue => e
           prompt.error 'E-mail could not be sent with this configuration, try again.'
           prompt.error e.message
           break unless prompt.yes?('Try again?')
@@ -409,7 +445,7 @@ namespace :mastodon do
           generated_header << "# using docker-compose or not.\n\n"
         end
 
-        File.write(Rails.root.join('.env.production'), "#{generated_header}#{env_contents}\n")
+        Rails.root.join('.env.production').write("#{generated_header}#{env_contents}\n")
 
         if using_docker
           prompt.ok 'Below is your configuration, save it to an .env.production file outside Docker:'
@@ -427,10 +463,10 @@ namespace :mastodon do
           prompt.say 'Running `RAILS_ENV=production rails db:setup` ...'
           prompt.say "\n\n"
 
-          if !system(env.transform_values(&:to_s).merge({ 'RAILS_ENV' => 'production', 'SAFETY_ASSURED' => '1' }), 'rails db:setup')
-            prompt.error 'That failed! Perhaps your configuration is not right'
-          else
+          if system(env.transform_values(&:to_s).merge({ 'RAILS_ENV' => 'production', 'SAFETY_ASSURED' => '1' }), 'rails db:setup')
             prompt.ok 'Done!'
+          else
+            prompt.error 'That failed! Perhaps your configuration is not right'
           end
         end
 
@@ -443,10 +479,10 @@ namespace :mastodon do
             prompt.say 'Running `RAILS_ENV=production rails assets:precompile` ...'
             prompt.say "\n\n"
 
-            if !system(env.transform_values(&:to_s).merge({ 'RAILS_ENV' => 'production' }), 'rails assets:precompile')
-              prompt.error 'That failed! Maybe you need swap space?'
-            else
+            if system(env.transform_values(&:to_s).merge({ 'RAILS_ENV' => 'production' }), 'rails assets:precompile')
               prompt.say 'Done!'
+            else
+              prompt.error 'That failed! Maybe you need swap space?'
             end
           end
         end
diff --git a/lib/tasks/repo.rake b/lib/tasks/repo.rake
index 795b54c59..888337b4f 100644
--- a/lib/tasks/repo.rake
+++ b/lib/tasks/repo.rake
@@ -5,7 +5,7 @@ REPOSITORY_NAME = 'mastodon/mastodon'
 namespace :repo do
   desc 'Generate the AUTHORS.md file'
   task :authors do
-    file = File.open(Rails.root.join('AUTHORS.md'), 'w')
+    file = Rails.root.join('AUTHORS.md').open('w')
 
     file << <<~HEADER
       Authors
@@ -87,12 +87,12 @@ namespace :repo do
   task check_locales_files: :environment do
     pastel = Pastel.new
 
-    missing_yaml_files = I18n.available_locales.reject { |locale| File.exist?(Rails.root.join('config', 'locales', "#{locale}.yml")) }
-    missing_json_files = I18n.available_locales.reject { |locale| File.exist?(Rails.root.join('app', 'javascript', 'mastodon', 'locales', "#{locale}.json")) }
+    missing_yaml_files = I18n.available_locales.reject { |locale| Rails.root.join('config', 'locales', "#{locale}.yml").exist? }
+    missing_json_files = I18n.available_locales.reject { |locale| Rails.root.join('app', 'javascript', 'mastodon', 'locales', "#{locale}.json").exist? }
 
     locales_in_files = Dir[Rails.root.join('config', 'locales', '*.yml')].map do |path|
-      file_name = File.basename(path)
-      file_name.gsub(/\A(doorkeeper|devise|activerecord|simple_form)\./, '').gsub(/\.yml\z/, '').to_sym
+      file_name = File.basename(path, '.yml')
+      file_name.gsub(/\A(doorkeeper|devise|activerecord|simple_form)\./, '').to_sym
     end.uniq.compact
 
     missing_available_locales = locales_in_files - I18n.available_locales
diff --git a/lib/tasks/statistics.rake b/lib/tasks/statistics.rake
index 82f2b5416..dde7890f6 100644
--- a/lib/tasks/statistics.rake
+++ b/lib/tasks/statistics.rake
@@ -7,13 +7,13 @@ namespace :mastodon do
   task :stats do
     require 'rails/code_statistics'
     [
-      %w(App\ Libraries app/lib),
+      ['App Libraries', 'app/lib'],
       %w(Presenters app/presenters),
       %w(Services app/services),
       %w(Validators app/validators),
       %w(Workers app/workers),
     ].each do |name, dir|
-      ::STATS_DIRECTORIES << [name, Rails.root.join(dir)]
+      STATS_DIRECTORIES << [name, Rails.root.join(dir)]
     end
   end
 end
diff --git a/lib/tasks/tests.rake b/lib/tasks/tests.rake
index 1dd25abb9..35073b78b 100644
--- a/lib/tasks/tests.rake
+++ b/lib/tasks/tests.rake
@@ -53,6 +53,11 @@ namespace :tests do
         puts 'Admin::ActionLog email domain block records not updated as expected'
         exit(1)
       end
+
+      unless User.find(1).settings['notification_emails.favourite'] == true && User.find(1).settings['notification_emails.mention'] == false
+        puts 'User settings not kept as expected'
+        exit(1)
+      end
     end
 
     desc 'Populate the database with test data for 2.4.3'
@@ -98,6 +103,11 @@ namespace :tests do
           (1, 'destroy', 'EmailDomainBlock', 1, now(), now()),
           (1, 'destroy', 'Status', 1, now(), now()),
           (1, 'destroy', 'CustomEmoji', 3, now(), now());
+
+        INSERT INTO "settings"
+          (id, thing_type, thing_id, var, value, created_at, updated_at)
+        VALUES
+          (3, 'User', 1, 'notification_emails', E'--- !ruby/hash:ActiveSupport::HashWithIndifferentAccess\nfollow: false\nreblog: true\nfavourite: true\nmention: false\nfollow_request: true\ndigest: true\nreport: true\npending_account: false\ntrending_tag: true\nappeal: true\n', now(), now());
       SQL
     end