Add RuboCop

.rubocop.yml

@@ -0,0 +1,61 @@
+require:
+  - rubocop-performance
+  - rubocop-rake
+
+AllCops:
+  TargetRubyVersion: 3.0
+  DisplayCopNames: true
+  NewCops: enable
+
+Layout/AccessModifierIndentation:
+  EnforcedStyle: outdent
+
+Layout/LineLength:
+  Max: 80
+
+Lint/AmbiguousOperatorPrecedence:
+  Enabled: false
+
+Lint/ReturnInVoidContext:
+  Enabled: false
+
+Metrics/BlockLength:
+  Exclude:
+    - '*.gemspec'
+    - 'Rakefile'
+    - 'spec/**/*_spec.rb'
+
+Metrics/MethodLength:
+  CountAsOne: ['array', 'hash', 'heredoc']
+
+Metrics/ParameterLists:
+  Exclude:
+    - 'lib/diversipub/main.rb'
+
+Style/AndOr:
+  EnforcedStyle: conditionals
+
+Style/Documentation:
+  Exclude:
+    - 'Rakefile'
+
+Style/DoubleNegation:
+  Enabled: false
+
+Style/HashAsLastArrayItem:
+  Enabled: false
+
+Style/PerlBackrefs:
+  Enabled: false
+
+Style/TrailingCommaInArguments:
+  EnforcedStyleForMultiline: comma
+
+Style/TrailingCommaInArrayLiteral:
+  EnforcedStyleForMultiline: comma
+
+Style/TrailingCommaInHashLiteral:
+  EnforcedStyleForMultiline: comma
+
+Style/VariableInterpolation:
+  Enabled: false

Rakefile

@@ -2,7 +2,21 @@
 
 require 'bundler/gem_tasks'
 
-task default: []
+desc 'Run default checks'
+task default: %i[lint]
+
+desc 'Run code analysis tools'
+task lint: %i[rubocop]
+
+desc 'Fix code style (rubocop --auto-correct)'
+task fix: 'rubocop:auto_correct'
+
+begin
+  require 'rubocop/rake_task'
+  RuboCop::RakeTask.new
+rescue LoadError
+  nil
+end
 
 desc 'Open development console'
 task :console do

diversipub.gemspec

@@ -19,9 +19,11 @@ Gem::Specification.new do |spec|
   spec.authors = ['Alex Kotov']
   spec.email   = ['kotovalexarian@gmail.com']
 
-  spec.summary = ''
+  spec.summary =
+    'A publishing platform for HTTP, Gemini, ActivityPub, RSS, Atom, and others'
 
   spec.description = <<~DESCRIPTION.split("\n").map(&:strip).join ' '
+    A publishing platform for HTTP, Gemini, ActivityPub, RSS, Atom, and others.
   DESCRIPTION
 
   spec.metadata['rubygems_mfa_required'] = 'true'
@@ -45,6 +47,9 @@ Gem::Specification.new do |spec|
   spec.add_runtime_dependency 'rack',    '~> 2.2', '>= 2.2.7'
   spec.add_runtime_dependency 'sinatra', '~> 3.0', '>= 3.0.6'
 
-  spec.add_development_dependency 'pry',  '~> 0.14'
+  spec.add_development_dependency 'bundler',             '~> 2.4'
-  spec.add_development_dependency 'rake', '~> 13.0'
+  spec.add_development_dependency 'pry',                 '~> 0.14'
+  spec.add_development_dependency 'rake',                '~> 13.0'
+  spec.add_development_dependency 'rubocop-performance', '~> 1.13'
+  spec.add_development_dependency 'rubocop-rake',        '~> 0.6'
 end

lib/diversipub/puma_task.rb

@@ -35,20 +35,22 @@ module Diversipub
     end
 
     def puma_config
-      @puma_config ||= Puma::Configuration.new(
+      @puma_config ||= Puma::Configuration.new puma_options.dup
-        {
+    end
-          app: rack_app,
+
-          binds: ['tcp://127.0.0.1:9292'].freeze,
+    def puma_options
-          environment: 'production',
+      @puma_options ||= {
-          log_requests: true,
+        app: rack_app,
-          logger: puma_logger,
+        binds: ['tcp://127.0.0.1:9292'].freeze,
-          rackup: nil,
+        environment: 'production',
-          tag: 'diversipub',
+        log_requests: true,
-          tcp_host: '127.0.0.1',
+        logger: puma_logger,
-          tcp_port: 9292,
+        rackup: nil,
-          workers: 0,
+        tag: 'diversipub',
-        },
+        tcp_host: '127.0.0.1',
-      )
+        tcp_port: 9292,
+        workers: 0,
+      }.freeze
     end
 
     def puma_log_writer