style(rubocop): fix all safe auto correctable offenses

script/default_dkim_record.rb

@@ -1,2 +1,2 @@
-require File.expand_path('../../lib/postal/config', __FILE__)
+require File.expand_path("../lib/postal/config", __dir__)
 puts Postal.rp_dkim_dns_record

script/generate_initial_config.rb

@@ -1,23 +1,22 @@
 #!/usr/bin/env ruby
-require File.expand_path('../../lib/postal/config', __FILE__)
-require 'openssl'
-require 'securerandom'
-require 'fileutils'
+require File.expand_path("../lib/postal/config", __dir__)
+require "openssl"
+require "securerandom"
+require "fileutils"
 
 unless File.directory?(Postal.config_root)
   FileUtils.mkdir_p(Postal.config_root)
 end
 
 unless File.exist?(Postal.config_file_path)
-  content = File.read(Postal.app_root.join('config', 'postal.example.yml'))
-  content.gsub!('{{secretkey}}', SecureRandom.hex(128))
-  File.open(Postal.config_file_path, 'w') { |f| f.write(content) }
+  content = File.read(Postal.app_root.join("config", "postal.example.yml"))
+  content.gsub!("{{secretkey}}", SecureRandom.hex(128))
+  File.write(Postal.config_file_path, content)
   puts "Created example config file at #{Postal.config_file_path}"
 end
 
-unless File.exists?(Postal.signing_key_path)
+unless File.exist?(Postal.signing_key_path)
   key = OpenSSL::PKey::RSA.new(1024).to_s
-  File.open(Postal.signing_key_path, 'w') { |f| f.write(key) }
+  File.write(Postal.signing_key_path, key)
   puts "Created new signing key for DKIM & HTTP requests"
 end
-

script/insert-bounce.rb

@@ -10,23 +10,23 @@ if ARGV[0].nil? || ARGV[1].nil?
   exit 1
 end
 
-require_relative '../config/environment'
+require_relative "../config/environment"
 
 server = Server.find(ARGV[0])
 puts "Got server #{server.name}"
 
-template = File.read(Rails.root.join('resource/postfix-bounce.msg'))
+template = File.read(Rails.root.join("resource/postfix-bounce.msg"))
 
 if ARGV[1].to_s =~ /\A(\d+)\z/
   message = server.message_db.message(ARGV[1].to_i)
   puts "Got message #{message.id} with token #{message.token}"
-  template.gsub!('{{MSGID}}', message.token)
+  template.gsub!("{{MSGID}}", message.token)
 else
-  template.gsub!('{{MSGID}}', ARGV[1].to_s)
+  template.gsub!("{{MSGID}}", ARGV[1].to_s)
 end
 
 message = server.message_db.new_message
-message.scope = 'incoming'
+message.scope = "incoming"
 message.rcpt_to = "#{server.token}@#{Postal.config.dns.return_path}"
 message.mail_from = "MAILER-DAEMON@smtp.infra.atech.io"
 message.raw_message = template

script/make_user.rb

@@ -1,8 +1,11 @@
 #!/usr/bin/env ruby
-trap("INT") { puts ; exit }
+trap("INT") do
+  puts
+  exit
+end
 
-require_relative '../config/environment'
-require 'postal/user_creator'
+require_relative "../config/environment"
+require "postal/user_creator"
 
 Postal::UserCreator.start do |u|
   u.admin = true

script/queue_size.rb

@@ -1,7 +1,7 @@
 #!/usr/bin/env ruby
-require_relative '../lib/postal/config'
-require 'mysql2'
+require_relative "../lib/postal/config"
+require "mysql2"
 
-client = Mysql2::Client.new(:host => Postal.config.main_db.host, :username => Postal.config.main_db.username, :password => Postal.config.main_db.password, :port => Postal.config.main_db.port, :database => Postal.config.main_db.database)
+client = Mysql2::Client.new(host: Postal.config.main_db.host, username: Postal.config.main_db.username, password: Postal.config.main_db.password, port: Postal.config.main_db.port, database: Postal.config.main_db.database)
 result = client.query("SELECT COUNT(id) as size FROM `queued_messages` WHERE retry_after IS NULL OR retry_after <= ADDTIME(UTC_TIMESTAMP(), '30') AND locked_at IS NULL")
-puts result.to_a.first['size']
+puts result.to_a.first["size"]

script/test_app_smtp.rb

@@ -1,13 +1,15 @@
 #!/usr/bin/env ruby
-trap("INT") { puts ; exit }
-
+trap("INT") do
+  puts
+  exit
+end
 
 if ARGV[0].nil? || !(ARGV[0] =~ /@/)
   puts "usage: postal test-app-smtp [email address]"
   exit 1
 end
 
-require_relative '../config/environment'
+require_relative "../config/environment"
 
 begin
   Timeout.timeout(10) do
@@ -15,7 +17,7 @@ begin
   end
 
   puts "\e[32mMessage has been sent successfully.\e[0m"
-rescue => e
+rescue StandardError => e
   puts "\e[31mMessage was not delivered successfully to SMTP server.\e[0m"
   puts "Error: #{e.class} (#{e.message})"
   puts

script/version.rb

@@ -1,3 +1,3 @@
 #!/usr/bin/env ruby
-require File.expand_path('../../lib/postal/version', __FILE__)
+require File.expand_path("../lib/postal/version", __dir__)
 puts Postal.version

script/worker.rb

@@ -1,3 +1,3 @@
 #!/usr/bin/env ruby
-require_relative '../config/environment'
+require_relative "../config/environment"
 Postal::Worker.new([:main]).work