Update rubocop configuration

.rubocop.yml

@@ -1,28 +1,24 @@
+require:
+  - rubocop-performance
+  - rubocop-rails
+  - rubocop-rspec
+
+inherit_from:
+  - .rubocop/layout.yml
+  - .rubocop/lint.yml
+  - .rubocop/metrics.yml
+  - .rubocop/performance.yml
+  - .rubocop/rails.yml
+  - .rubocop/rspec.yml
+  - .rubocop/style.yml
+  - .rubocop_todo.yml
+
 AllCops:
   TargetRubyVersion: 2.7
+  TargetRailsVersion: 6.1
+  UseCache: True
   NewCops: enable
   Exclude:
-    - bin/*
+    - 'bin/*'
-    - config/application.rb
+    - 'db/schema.rb'
-    - config/initializers/sorcery.rb
+    - 'vendor/**/*'
-    - db/seeds/**/*
-    - db/schema.rb
-    - public/uploads/**/*
-    - tmp/**/*
-    - vendor/**/*
-    - node_modules/**/*
-Layout/LineLength:
-  Enabled: false
-require:
-    - rubocop-rspec
-    - rubocop-rails
-Style/Documentation:
-  Enabled: false
-Layout/SpaceInsideHashLiteralBraces:
-  EnforcedStyle: no_space
-RSpec/MultipleExpectations:
-  Max: 2
-Metrics/BlockLength:
-  Exclude:
-    - 'spec/**/*.rb'
-    - 'config/environments/*.rb'

.rubocop/layout.yml

@@ -0,0 +1,42 @@
+# layout cop settings
+
+Layout/ArgumentAlignment:
+  EnforcedStyle: with_fixed_indentation
+
+Layout/CaseIndentation:
+  EnforcedStyle: end
+  SupportedStyles:
+    - case
+    - end
+  IndentOneStep: true
+
+Layout/FirstArrayElementIndentation:
+  EnforcedStyle: consistent
+
+Layout/FirstHashElementIndentation:
+  EnforcedStyle: consistent
+
+#
+# There are good reasons for key as well as table style.
+#
+Layout/HashAlignment:
+  Enabled: false
+
+Layout/LineLength:
+  Exclude:
+    - "api/**/*"
+    - "config/**/*"
+    - "db/**/*"
+    - "spec/**/*"
+  Max: 120
+
+Layout/MultilineMethodCallIndentation:
+  EnforcedStyle: indented
+
+Layout/SpaceInsideBlockBraces:
+  EnforcedStyle: space
+  EnforcedStyleForEmptyBraces: no_space
+  SpaceBeforeBlockParameters: false
+
+Layout/SpaceInsideHashLiteralBraces:
+  EnforcedStyle: no_space

.rubocop/lint.yml

@@ -0,0 +1,20 @@
+# lint cop settings
+
+#
+# False positives:
+#   * expect { something }.to change { something } often triggers this
+#
+Lint/AmbiguousBlockAssociation:
+  Exclude:
+    - "spec/**/*_spec.rb"
+
+#Lint/ShadowingOuterLocalVariable:
+#  Exclude:
+#    - "spec/**/*_spec.rb"
+#
+##
+## Assume we know what we do when resucing exception, as we do it much less often
+## than we actually should.
+##
+#Lint/SuppressedException:
+#  Enabled: false

.rubocop/metrics.yml

@@ -0,0 +1,39 @@
+# metric cop settings
+
+#
+# Method calls add to this metric, but they are everywhere in Ruby, so this
+# metric caused lots of what we would consider false positives.
+#
+Metrics/AbcSize:
+  Enabled: false
+
+Metrics/BlockLength:
+  Exclude:
+    # Common files with e.g. block based DSLs
+    - "db/**/*"
+    - "spec/**/*"
+    - "config/**/*"
+    - "**/*.rake"
+    - "api/**/*"
+    - "Rakefile"
+    - "Guardfile"
+    - "**/*/Rakefile"
+  Max: 50
+
+Metrics/ClassLength:
+  Max: 200
+
+#
+# Often used as a proxy for complexity in a method, but causes many false
+# positives, e.g. when generating large, but simple, hashes.
+# We want to rely on CyclomaticComplexity instead.
+#
+Metrics/MethodLength:
+  Enabled: false
+
+#
+# This seems to be the cop that is closest to what we're interested in, which
+# is the kind of complexity that usually surfaces in deep nesting.
+#
+Metrics/CyclomaticComplexity:
+  Enabled: true

.rubocop/performance.yml

@@ -0,0 +1,7 @@
+# performance cop settings
+
+# The policy specs should be easy to read
+#
+Performance/CollectionLiteralInLoop:
+  Exclude:
+    - 'spec/policies/**'

.rubocop/rails.yml

@@ -0,0 +1,19 @@
+# rails cop settings
+
+Rails:
+  Enabled: true
+
+#
+# False positives:
+#   * On embedded models in migrations.
+#
+Rails/ApplicationRecord:
+  Exclude:
+    - "db/**/*"
+
+Rails/UnknownEnv:
+  Environments:
+    - development
+    - staging
+    - production
+    - test

.rubocop/rspec.yml

@@ -0,0 +1,42 @@
+# rspec cop settings
+
+RSpec:
+  Include:
+    - "spec/**/*_spec.rb"
+    - "spec/spec_helper.rb"
+    - "spec/rails_helper.rb"
+
+#
+# Too stupid. There are also views, templates, request specs etc.
+#
+RSpec/DescribeClass:
+  Enabled: false
+  Exclude:
+    - "spec/views/**/*_spec.rb"
+
+RSpec/ExampleLength:
+  Enabled: false
+
+RSpec/MessageSpies:
+  Enabled: false
+
+RSpec/MultipleExpectations:
+  Enabled: false
+
+RSpec/NestedGroups:
+  Max: 7
+
+# Some of the small example helpers are not recognized correctly
+#
+RSpec/EmptyExampleGroup:
+  Enabled: false
+
+# The Policies need to repeat examples and descriptions and might not be performant
+#
+RSpec/RepeatedExample:
+  Exclude:
+    - 'spec/policies/**'
+
+RSpec/RepeatedDescription:
+  Exclude:
+    - 'spec/policies/**'

.rubocop/style.yml

@@ -0,0 +1,133 @@
+# style cop settings
+
+#
+# Nein. Period. Try to keep it English, but there *will* references using
+# unicode characters.
+#
+Style/AsciiComments:
+  Enabled: false
+
+#
+# Both styles or mixtures are reasonable
+#
+Style/ClassAndModuleChildren:
+  EnforcedStyle: compact
+  Enabled: false
+
+#
+# Maybe a bit uncommon for new devs and often results in heavily indented code
+# blocks.
+#
+Style/ConditionalAssignment:
+  Enabled: false
+
+#
+# Would be better but unlikely...
+#
+Style/Documentation:
+  Enabled: false
+
+#
+# Okay for conditions, but false positive in return statements (e.g. APIs)
+#
+Style/DoubleNegation:
+  Enabled: false
+
+#
+# Our default string token has the '%{value}' format
+#
+Style/FormatStringToken:
+  EnforcedStyle: template
+
+#
+# Far to often easy to read without.
+#
+Style/GuardClause:
+  Enabled: false
+
+#
+# IfUnlessModifier has no own line length but we do not want it to force 120
+# chars long modifiers just because we allow a few long lines.
+#
+Style/IfUnlessModifier:
+  Enabled: false
+
+##
+## Scripts might include on top-level
+##
+#Style/MixinUsage:
+#  Exclude:
+#    - "scripts/**/*"
+#    - "services/*/scripts/**/*"
+
+#
+# Well, we do this. To often to disable them. Studid.
+#
+Style/MultilineBlockChain:
+  Enabled: false
+
+#Style/NumericPredicate:
+#  Enabled: false
+
+Style/RaiseArgs:
+  EnforcedStyle: compact
+
+##
+## Quick single line rescues in specs
+##
+#Style/RescueModifier:
+#  Exclude:
+#    - "spec/**/*_spec.rb"
+#
+##
+## Quick single line rescues in specs
+##
+#Style/RescueStandardError:
+#  Enabled: false
+
+##
+## Often used pattern in chaining subjects in specs
+##
+#Style/Semicolon:
+#  Exclude:
+#    - "services/*/spec/**/*_spec.rb"
+#    - "spec/**/*_spec.rb"
+
+Style/SignalException:
+  EnforcedStyle: only_raise
+
+#
+# Rails callbacks and all methods action on the arity of the given block will
+# behave differently if passed a symbol proc.
+#
+# See here for more details:
+#   https://github.com/rubocop-hq/rubocop/issues/3071#issuecomment-214550737
+#
+# Ignore all known Rails callback methods.
+#
+Style/SymbolProc:
+  IgnoredMethods:
+    - after_commit
+    - after_create
+    - after_destroy
+    - after_rollback
+    - after_save
+    - after_update
+    - after_validation
+    - around_create
+    - around_destroy
+    - around_save
+    - around_update
+    - before_create
+    - before_destroy
+    - before_save
+    - before_update
+    - before_validation
+    # Migrations look better with blocks
+    - create_table
+
+Style/TrailingCommaInArrayLiteral:
+  EnforcedStyleForMultiline: comma
+
+Style/TrailingCommaInHashLiteral:
+  EnforcedStyleForMultiline: comma

.rubocop_todo.yml

@@ -0,0 +1,66 @@
+# TODOs
+
+# The API seems to use huge amounts of {...} blocks for it's API design.
+#
+Style/BlockDelimiters:
+  Exclude:
+    - api/**/*.rb
+
+
+# Lots of line are too long too.
+#
+Layout/LineLength:
+  Max: 325
+
+Metrics/BlockLength:
+  Max: 110
+
+Metrics/ClassLength:
+  Max: 550
+
+Metrics/ModuleLength:
+  Max: 220
+
+# It's a very complicated application...
+#
+Metrics/CyclomaticComplexity:
+  Max: 20
+
+Metrics/PerceivedComplexity:
+  Max: 22
+
+# We don't want to change previous migrations...
+#
+Rails/CreateTableWithTimestamps:
+  Enabled: false
+
+Rails/BulkChangeTable:
+  Enabled: false
+
+Rails/ReversibleMigration:
+  Enabled: false
+
+Rails/NotNullColumn:
+  Enabled: false
+
+# The models need to be fixed anyway
+#
+Rails/UniqueValidationWithoutIndex:
+  Enabled: false
+
+Rails/HasManyOrHasOneDependent:
+  Enabled: false
+
+Rails/HasAndBelongsToMany:
+  Enabled: false
+
+Rails/InverseOf:
+  Enabled: false
+
+# We have too many specs with too many lets
+#
+RSpec/MultipleMemoizedHelpers:
+  Enabled: false
+
+RSpec/AnyInstance:
+  Enabled: false

Gemfile

@@ -20,7 +20,7 @@ gem 'mimemagic'
 gem 'nokogiri'
 gem 'pagedown-bootstrap-rails'
 gem 'pg'
-gem 'proforma', git: 'https://github.com/openHPI/proforma.git', tag: 'v0.5.1'
+gem 'proforma', github: 'openHPI/proforma', tag: 'v0.5.1'
 gem 'prometheus_exporter'
 gem 'pry-byebug'
 gem 'puma'
@@ -31,13 +31,13 @@ gem 'rails-i18n'
 gem 'rails-timeago'
 gem 'ransack'
 gem 'rest-client'
-gem 'rubytree'
+gem 'rubytree', github: 'evolve75/RubyTree'
 gem 'rubyzip'
 gem 'sass-rails'
 gem 'slim-rails'
 gem 'sorcery' # Causes a deprecation warning in Rails 6.0+, see: https://github.com/Sorcery/sorcery/pull/255
 gem 'telegraf'
-gem 'tubesock', git: 'https://github.com/gosukiwi/tubesock', branch: 'patch-1' # Switch to a fork which is compatible with Rails 5
+gem 'tubesock', github: 'gosukiwi/tubesock', branch: 'patch-1' # Switch to a fork which is compatible with Rails 5
 gem 'turbolinks'
 gem 'webpacker'
 gem 'whenever', require: false
@@ -57,6 +57,7 @@ group :development, :staging do
   gem 'pry-rails'
   gem 'rack-mini-profiler'
   gem 'rubocop', require: false
+  gem 'rubocop-performance'
   gem 'rubocop-rails', require: false
   gem 'rubocop-rspec'
   gem 'web-console'

Gemfile.lock

@@ -1,5 +1,13 @@
 GIT
-  remote: https://github.com/gosukiwi/tubesock
+  remote: https://github.com/evolve75/RubyTree.git
+  revision: eb045068f73529c66d9d84f0553fdf85fc98bc4f
+  specs:
+    rubytree (1.0.2)
+      json (~> 2.3.1)
+      structured_warnings (~> 0.4.0)
+
+GIT
+  remote: https://github.com/gosukiwi/tubesock.git
   revision: 86a5ca4f7d3c3a7b9a727ad91df3b9b4912eda39
   branch: patch-1
   specs:
@@ -198,7 +206,7 @@ GEM
       thor (>= 0.14, < 2.0)
     jquery-ui-rails (6.0.1)
       railties (>= 3.2.16)
-    json (2.5.1)
+    json (2.3.1)
     jwt (2.2.3)
     kaminari (1.2.1)
       activesupport (>= 4.1.0)
@@ -396,6 +404,9 @@ GEM
       unicode-display_width (>= 1.4.0, < 3.0)
     rubocop-ast (1.5.0)
       parser (>= 3.0.1.1)
+    rubocop-performance (1.11.3)
+      rubocop (>= 1.7.0, < 2.0)
+      rubocop-ast (>= 0.4.0)
     rubocop-rails (2.10.1)
       activesupport (>= 4.2.0)
       rack (>= 1.1)
@@ -407,9 +418,6 @@ GEM
     ruby-vips (2.1.2)
       ffi (~> 1.12)
     ruby2_keywords (0.0.4)
-    rubytree (1.0.0)
-      json (~> 2.1)
-      structured_warnings (~> 0.3)
     rubyzip (2.3.0)
     sass-rails (6.0.0)
       sassc-rails (~> 2.1, >= 2.1.1)
@@ -557,9 +565,10 @@ DEPENDENCIES
   rspec-collection_matchers
   rspec-rails
   rubocop
+  rubocop-performance
   rubocop-rails
   rubocop-rspec
-  rubytree
+  rubytree!
   rubyzip
   sass-rails
   selenium-webdriver