Isolate and namespace StimulusReflex::Installer (#699)

This pull request isolates the methods defined
`lib/stimulus_reflex/installer.rb` into a `StimulusReflex::Installer`
constant so they don't pollute the global namespace if the file is
required.

CableReady got a similar PR:
stimulusreflex/cable_ready#295

## Why should this be added

Exposing all the methods from the installer in the global namespace
could lead to issues down the road. Methods like `options` are likely to
be overridden.

lib/generators/stimulus_reflex/stimulus_reflex_generator.rb

@@ -20,13 +20,13 @@ def execute
 
     template(reflex_src, reflex_path) unless options[:skip_reflex]
 
-    if !options[:skip_stimulus] && entrypoint.blank?
+    if !options[:skip_stimulus] && StimulusReflex::Installer.entrypoint.blank?
       puts "❌ You must specify a valid JavaScript entrypoint."
       exit
     end
 
     stimulus_controller_src = "app/javascript/controllers/%file_name%_controller.js.tt"
-    stimulus_controller_path = Rails.root.join(entrypoint, "controllers/#{file_name}_controller.js")
+    stimulus_controller_path = Rails.root.join(StimulusReflex::Installer.entrypoint, "controllers/#{file_name}_controller.js")
 
     template(stimulus_controller_src, stimulus_controller_path) unless options[:skip_stimulus]
 

lib/generators/stimulus_reflex/templates/app/javascript/config/cable_ready.js.tt

@@ -1,4 +1,4 @@
-<%- if bundler.importmap? -%>
+<%- if StimulusReflex::Installer.bundler.importmap? -%>
 import consumer from "channels/consumer"
 <%- else -%>
 import consumer from "../channels/consumer"

lib/generators/stimulus_reflex/templates/app/javascript/config/index.js.tt

@@ -1,4 +1,4 @@
-<%- if bundler.importmap? -%>
+<%- if StimulusReflex::Installer.bundler.importmap? -%>
 import "config/cable_ready"
 import "config/stimulus_reflex"
 <%- else -%>

lib/generators/stimulus_reflex/templates/app/javascript/config/stimulus_reflex.js.tt

@@ -1,4 +1,4 @@
-<%- if bundler.importmap? -%>
+<%- if StimulusReflex::Installer.bundler.importmap? -%>
 import { application } from "controllers/application"
 import controller from "controllers/application_controller"
 <%- else -%>

lib/generators/stimulus_reflex/templates/app/javascript/controllers/%file_name%_controller.js.tt

@@ -1,4 +1,4 @@
-<%- if bundler.importmap? -%>
+<%- if StimulusReflex::Installer.bundler.importmap? -%>
 import ApplicationController from "controllers/application_controller"
 <%- else -%>
 import ApplicationController from "./application_controller"

lib/generators/stimulus_reflex/templates/app/javascript/controllers/application.js.tt

@@ -1,5 +1,5 @@
 import { Application } from "@hotwired/stimulus"
-<%- if bundler.importmap? %>
+<%- if StimulusReflex::Installer.bundler.importmap? %>
 import consumer from "channels/consumer"
 <%- else %>
 import consumer from "../channels/consumer"

lib/install/action_cable.rb

@@ -6,11 +6,11 @@
 if defined?(ActionCable::Engine)
   say "⏩ ActionCable::Engine is already loaded and in scope. Skipping"
 else
-  halt "ActionCable::Engine is not loaded, please add or uncomment `require \"action_cable/engine\"` to your `config/application.rb`"
+  StimulusReflex::Installer.halt "ActionCable::Engine is not loaded, please add or uncomment `require \"action_cable/engine\"` to your `config/application.rb`"
   return
 end
 
-return if pack_path_missing?
+return if StimulusReflex::Installer.pack_path_missing?
 
 # verify that the Action Cable pubsub config is created
 cable_config = Rails.root.join("config/cable.yml")
@@ -37,37 +37,37 @@
     "url" => "<%= ENV.fetch(\"REDIS_URL\") { \"redis://localhost:6379/1\" } %>",
     "channel_prefix" => "#{app_name}_development"
   }
-  backup(cable_config) do
+  StimulusReflex::Installer.backup(cable_config) do
     cable_config.write(yaml.to_yaml)
   end
   say "✅ config/cable.yml was updated to use the redis adapter in development"
 else
   say "🤷 config/cable.yml should use the redis adapter - or something like it - in development. You have something else specified, and we trust that you know what you're doing."
 end
 
-if gemfile.match?(/gem ['"]redis['"]/)
+if StimulusReflex::Installer.gemfile.match?(/gem ['"]redis['"]/)
   say "⏩ redis gem is already present in Gemfile. Skipping."
 elsif Rails::VERSION::MAJOR >= 7
-  add_gem "redis@~> 5"
+  StimulusReflex::Installer.add_gem "redis@~> 5"
 else
-  add_gem "redis@~> 4"
+  StimulusReflex::Installer.add_gem "redis@~> 4"
 end
 
 # install action-cable-redis-backport gem if using Action Cable < 7.1
 unless ActionCable::VERSION::MAJOR >= 7 && ActionCable::VERSION::MINOR >= 1
-  if gemfile.match?(/gem ['"]action-cable-redis-backport['"]/)
+  if StimulusReflex::Installer.gemfile.match?(/gem ['"]action-cable-redis-backport['"]/)
     say "⏩ action-cable-redis-backport gem is already present in Gemfile. Skipping."
   else
-    add_gem "action-cable-redis-backport@~> 1"
+    StimulusReflex::Installer.add_gem "action-cable-redis-backport@~> 1"
   end
 end
 
 # verify that the Action Cable channels folder and consumer class is available
 step_path = "/app/javascript/channels/"
-channels_path = Rails.root.join(entrypoint, "channels")
-consumer_src = fetch(step_path, "consumer.js.tt")
+channels_path = Rails.root.join(StimulusReflex::Installer.entrypoint, "channels")
+consumer_src = StimulusReflex::Installer.fetch(step_path, "consumer.js.tt")
 consumer_path = channels_path / "consumer.js"
-index_src = fetch(step_path, "index.js.#{bundler}.tt")
+index_src = StimulusReflex::Installer.fetch(step_path, "index.js.#{StimulusReflex::Installer.bundler}.tt")
 index_path = channels_path / "index.js"
 friendly_index_path = index_path.relative_path_from(Rails.root).to_s
 
@@ -79,7 +79,7 @@
   if index_path.read == index_src.read
     say "⏩ #{friendly_index_path} is already present. Skipping."
   else
-    backup(index_path) do
+    StimulusReflex::Installer.backup(index_path) do
       copy_file(index_src, index_path, verbose: false)
     end
     say "✅ #{friendly_index_path} has been updated"
@@ -92,45 +92,45 @@
 # import Action Cable channels into application pack
 channels_pattern = /import ['"](\.\.\/|\.\/)?channels['"]/
 channels_commented_pattern = /\s*\/\/\s*#{channels_pattern}/
-channel_import = "import \"#{prefix}channels\"\n"
+channel_import = "import \"#{StimulusReflex::Installer.prefix}channels\"\n"
 
-if pack.match?(channels_pattern)
-  if pack.match?(channels_commented_pattern)
-    proceed = if options.key? "uncomment"
-      options["uncomment"]
+if StimulusReflex::Installer.pack.match?(channels_pattern)
+  if StimulusReflex::Installer.pack.match?(channels_commented_pattern)
+    proceed = if StimulusReflex::Installer.options.key? "uncomment"
+      StimulusReflex::Installer.options["uncomment"]
     else
       !no?("✨ Action Cable seems to be commented out in your application.js. Do you want to uncomment it? (Y/n)")
     end
 
     if proceed
       # uncomment_lines only works with Ruby comments 🙄
-      lines = pack_path.readlines
+      lines = StimulusReflex::Installer.pack_path.readlines
       matches = lines.select { |line| line =~ channels_commented_pattern }
       lines[lines.index(matches.last).to_i] = channel_import
-      pack_path.write lines.join
-      say "✅ Uncommented channels import in #{friendly_pack_path}"
+      StimulusReflex::Installer.pack_path.write lines.join
+      say "✅ Uncommented channels import in #{StimulusReflex::Installer.friendly_pack_path}"
     else
       say "🤷 your Action Cable channels are not being imported in your application.js. We trust that you have a reason for this."
     end
   else
-    say "⏩ channels are already being imported in #{friendly_pack_path}. Skipping."
+    say "⏩ channels are already being imported in #{StimulusReflex::Installer.friendly_pack_path}. Skipping."
   end
 else
-  lines = pack_path.readlines
+  lines = StimulusReflex::Installer.pack_path.readlines
   matches = lines.select { |line| line =~ /^import / }
   lines.insert lines.index(matches.last).to_i + 1, channel_import
-  pack_path.write lines.join
-  say "✅ channels imported in #{friendly_pack_path}"
+  StimulusReflex::Installer.pack_path.write lines.join
+  say "✅ channels imported in #{StimulusReflex::Installer.friendly_pack_path}"
 end
 
 # create working copy of Action Cable initializer in tmp
-if action_cable_initializer_path.exist?
-  FileUtils.cp(action_cable_initializer_path, action_cable_initializer_working_path)
+if StimulusReflex::Installer.action_cable_initializer_path.exist?
+  FileUtils.cp(StimulusReflex::Installer.action_cable_initializer_path, StimulusReflex::Installer.action_cable_initializer_working_path)
 
   say "⏩ Action Cable initializer already exists. Skipping"
 else
   # create Action Cable initializer if it doesn't already exist
-  create_file(action_cable_initializer_working_path, verbose: false) do
+  create_file(StimulusReflex::Installer.action_cable_initializer_working_path, verbose: false) do
     <<~RUBY
       # frozen_string_literal: true
 
@@ -140,10 +140,10 @@
 end
 
 # silence notoriously chatty Action Cable logs
-if action_cable_initializer_working_path.read.match?(/^[^#]*ActionCable.server.config.logger/)
+if StimulusReflex::Installer.action_cable_initializer_working_path.read.match?(/^[^#]*ActionCable.server.config.logger/)
   say "⏩ Action Cable logger is already being silenced. Skipping"
 else
-  append_file(action_cable_initializer_working_path, verbose: false) do
+  append_file(StimulusReflex::Installer.action_cable_initializer_working_path, verbose: false) do
     <<~RUBY
       ActionCable.server.config.logger = Logger.new(nil)
 
@@ -152,4 +152,4 @@
   say "✅ Action Cable logger silenced for performance and legibility"
 end
 
-complete_step :action_cable
+StimulusReflex::Installer.complete_step :action_cable

lib/install/broadcaster.rb

@@ -11,7 +11,7 @@ def needs_broadcaster?(path)
 channel_path = Rails.root.join("app/channels/application_cable/channel.rb")
 controller_path = Rails.root.join("app/controllers/application_controller.rb")
 job_path = Rails.root.join("app/jobs/application_job.rb")
-model_path = Rails.root.join(application_record_path)
+model_path = Rails.root.join(StimulusReflex::Installer.application_record_path)
 
 include_in_channel = needs_broadcaster?(channel_path)
 include_in_controller = needs_broadcaster?(controller_path)
@@ -21,20 +21,20 @@ def needs_broadcaster?(path)
 proceed = [include_in_channel, include_in_controller, include_in_job, include_in_model].reduce(:|)
 
 unless proceed
-  complete_step :broadcaster
+  StimulusReflex::Installer.complete_step :broadcaster
 
   puts "⏩ CableReady::Broadcaster already included in all files. Skipping."
   return
 end
 
-proceed = if options.key? "broadcaster"
-  options["broadcaster"]
+proceed = if StimulusReflex::Installer.options.key? "broadcaster"
+  StimulusReflex::Installer.options["broadcaster"]
 else
   !no?("✨ Make CableReady::Broadcaster available to channels, controllers, jobs and models? (Y/n)")
 end
 
 unless proceed
-  complete_step :broadcaster
+  StimulusReflex::Installer.complete_step :broadcaster
 
   puts "⏩ Skipping."
   return
@@ -44,7 +44,7 @@ def needs_broadcaster?(path)
 
 # include CableReady::Broadcaster in Action Cable Channel classes
 if include_in_channel
-  backup(channel_path) do
+  StimulusReflex::Installer.backup(channel_path) do
     inject_into_file channel_path, broadcaster_include, after: /class (ApplicationCable::)?Channel < ActionCable::Channel::Base/, verbose: false
   end
 
@@ -55,7 +55,7 @@ def needs_broadcaster?(path)
 
 # include CableReady::Broadcaster in Action Controller classes
 if include_in_controller
-  backup(controller_path) do
+  StimulusReflex::Installer.backup(controller_path) do
     inject_into_class controller_path, "ApplicationController", broadcaster_include, verbose: false
   end
 
@@ -67,7 +67,7 @@ def needs_broadcaster?(path)
 # include CableReady::Broadcaster in Active Job classes, if present
 
 if include_in_job
-  backup(job_path) do
+  StimulusReflex::Installer.backup(job_path) do
     inject_into_class job_path, "ApplicationJob", broadcaster_include, verbose: false
   end
 
@@ -78,13 +78,13 @@ def needs_broadcaster?(path)
 
 # include CableReady::Broadcaster in Active Record model classes
 if include_in_model
-  backup(application_record_path) do
-    inject_into_class application_record_path, "ApplicationRecord", broadcaster_include, verbose: false
+  StimulusReflex::Installer.backup(StimulusReflex::Installer.application_record_path) do
+    inject_into_class StimulusReflex::Installer.application_record_path, "ApplicationRecord", broadcaster_include, verbose: false
   end
 
   puts "✅ include CableReady::Broadcaster in ApplicationRecord"
 else
   puts "⏩ Not including CableReady::Broadcaster in ApplicationRecord. Skipping"
 end
 
-complete_step :broadcaster
+StimulusReflex::Installer.complete_step :broadcaster

lib/install/bundle.rb

@@ -2,14 +2,14 @@
 
 require "stimulus_reflex/installer"
 
-hash = gemfile_hash
+hash = StimulusReflex::Installer.gemfile_hash
 
 # run bundle only when gems are waiting to be added or removed
-add = add_gem_list.exist? ? add_gem_list.readlines.map(&:chomp) : []
-remove = remove_gem_list.exist? ? remove_gem_list.readlines.map(&:chomp) : []
+add = StimulusReflex::Installer.add_gem_list.exist? ? StimulusReflex::Installer.add_gem_list.readlines.map(&:chomp) : []
+remove = StimulusReflex::Installer.remove_gem_list.exist? ? StimulusReflex::Installer.remove_gem_list.readlines.map(&:chomp) : []
 
 if add.present? || remove.present?
-  lines = gemfile_path.readlines
+  lines = StimulusReflex::Installer.gemfile_path.readlines
 
   remove.each do |name|
     index = lines.index { |line| line =~ /gem ['"]#{name}['"]/ }
@@ -40,17 +40,17 @@
     end
   end
 
-  gemfile_path.write lines.join
+  StimulusReflex::Installer.gemfile_path.write lines.join
 
-  bundle_command("install --quiet", "BUNDLE_IGNORE_MESSAGES" => "1") if hash != gemfile_hash
+  bundle_command("install --quiet", "BUNDLE_IGNORE_MESSAGES" => "1") if hash != StimulusReflex::Installer.gemfile_hash
 else
   say "⏩ No rubygems depedencies to install. Skipping."
 end
 
-FileUtils.cp(development_working_path, development_path)
+FileUtils.cp(StimulusReflex::Installer.development_working_path, StimulusReflex::Installer.development_path)
 say "✅ development environment configuration installed"
 
-FileUtils.cp(action_cable_initializer_working_path, action_cable_initializer_path)
+FileUtils.cp(StimulusReflex::Installer.action_cable_initializer_working_path, StimulusReflex::Installer.action_cable_initializer_path)
 say "✅ Action Cable initializer installed"
 
-complete_step :bundle
+StimulusReflex::Installer.complete_step :bundle

lib/install/compression.rb

@@ -2,17 +2,17 @@
 
 require "stimulus_reflex/installer"
 
-initializer = action_cable_initializer_working_path.read
+initializer = StimulusReflex::Installer.action_cable_initializer_working_path.read
 
-if gemfile.match?(/gem ['"]permessage_deflate['"]/)
+if StimulusReflex::Installer.gemfile.match?(/gem ['"]permessage_deflate['"]/)
   say "⏩ permessage_deflate already present in Gemfile. Skipping."
 else
-  add_gem "permessage_deflate@>= 0.1"
+  StimulusReflex::Installer.add_gem "permessage_deflate@>= 0.1"
 end
 
 # add permessage_deflate config to Action Cable initializer
 if initializer.exclude? "PermessageDeflate.configure"
-  create_or_append(action_cable_initializer_working_path, verbose: false) do
+  StimulusReflex::Installer.create_or_append(StimulusReflex::Installer.action_cable_initializer_working_path, verbose: false) do
     <<~RUBY
       module ActionCable
         module Connection
@@ -38,4 +38,4 @@ def initialize(env, event_target, event_loop, protocols)
   say "⏩ Action Cable initializer is already patched to deflate websocket traffic. Skipping."
 end
 
-complete_step :compression
+StimulusReflex::Installer.complete_step :compression