Introduce suspenders:install:web generator and application template

Create generator to invoke all necessary generators. We add it to the
`install` namespace to provide flexibility should we add other
installation options, such as ones for API Only applications.

Introduces [template][] as a means to invoke `suspenders:install:web`
when creating a new application. This serves as an alternative to the
system executable that was removed.

We call `db:prepare` in the template to ensure `bin/setup` works as
expected. This is because we overrode that file to use `dev:prime`,
which assume the database has been created.

[template]: https://guides.rubyonrails.org/rails_application_templates.html

NEWS.md

@@ -17,6 +17,7 @@ Unreleased
 * Introduce `suspenders:testing` generator
 * Introduce `suspenders:prerequisites` generator
 * Introduce `suspenders:ci` generator
+* Introduce `suspenders:install:web` generator
 
 20230113.0 (January, 13, 2023)
 

README.md

@@ -9,14 +9,24 @@ if you like missing deadlines.
 
 ## Usage
 
+### Existing Rails Applications
+
 ```
 group :development, :test do
   gem "suspenders"
 end
 ```
 
 ```
-bin/rails g suspenders:all
+bin/rails g suspenders:install:web
+```
+
+### New Rails Applications
+
+```
+rails new my_app \
+-d=postgresql \
+-m=https://raw.githubusercontent.com/thoughtbot/suspenders/lib/install/web.rb
 ```
 
 ## Generators

lib/generators/suspenders/install/web_generator.rb

@@ -0,0 +1,43 @@
+module Suspenders
+  module Generators
+    module Install
+      class WebGenerator < Rails::Generators::Base
+        include Suspenders::Generators::APIAppUnsupported
+        include Suspenders::Generators::DatabaseUnsupported
+
+        def invoke_generators
+          # This needs to go first, since it configures `.node-version`
+          generate "suspenders:prerequisites"
+
+          generate "suspenders:accessibility"
+          generate "suspenders:advisories"
+          generate "suspenders:email"
+          generate "suspenders:factories"
+          generate "suspenders:inline_svg"
+          generate "suspenders:rake"
+          generate "suspenders:setup"
+          generate "suspenders:tasks"
+          generate "suspenders:testing"
+          generate "suspenders:views"
+
+          # jobs needs to be invoked before styles, since the syles generator
+          # creates Procfile.dev
+          generate "suspenders:styles"
+          generate "suspenders:jobs"
+
+          # Run after styles, since that creates a package.json file
+          generate "suspenders:lint"
+
+          # Needs to be run last since it depends on lint, testing, and
+          # advisories
+          generate "suspenders:ci"
+        end
+
+        def lint
+          run "yarn run fix:prettier"
+          run "bundle exec rake standard:fix_unsafely"
+        end
+      end
+    end
+  end
+end

lib/install/web.rb

@@ -0,0 +1,31 @@
+def apply_template!
+  if options[:database] == "postgresql" && options[:skip_test]
+    after_bundle do
+      gem_group :development, :test do
+        gem "suspenders", github: "thoughtbot/suspenders", branch: "suspenders-3-0-0-web-generator"
+      end
+
+      run "bundle install"
+
+      generate "suspenders:install:web"
+      rails_command "db:prepare"
+
+      say "\nCongratulations! You just pulled our suspenders."
+    end
+  else
+    message = <<~ERROR
+
+
+      === Please use the correct options ===
+
+      rails new <app_name> \\
+      --skip-test \\
+      -d=postgresql \\
+      -m=https://raw.githubusercontent.com/thoughtbot/suspenders/suspenders-3-0-0-web-generator/lib/install/web.rb
+    ERROR
+
+    fail Rails::Generators::Error, message
+  end
+end
+
+apply_template!

test/generators/suspenders/install/web_generator_test.rb

@@ -0,0 +1,43 @@
+require "test_helper"
+require "generators/suspenders/install/web_generator"
+
+module Suspenders
+  module Generators
+    module Install
+      class WebGeneratorTest < Rails::Generators::TestCase
+        include Suspenders::TestHelpers
+
+        tests Suspenders::Generators::Install::WebGenerator
+        destination Rails.root
+        setup :prepare_destination
+        teardown :restore_destination
+
+        test "raises if API only application" do
+          within_api_only_app do
+            assert_raises Suspenders::Generators::APIAppUnsupported::Error do
+              run_generator
+            end
+          end
+        end
+
+        test "raises if PostgreSQL is not the adapter" do
+          with_database "unsupported" do
+            assert_raises Suspenders::Generators::DatabaseUnsupported::Error do
+              run_generator
+            end
+          end
+        end
+
+        private
+
+        def prepare_destination
+          touch "Gemfile"
+        end
+
+        def restore_destination
+          remove_file_if_exists "Gemfile"
+        end
+      end
+    end
+  end
+end