feat(generator): simplify installation by reducing setup steps

Author: enowmbi

README.md

@@ -25,46 +25,37 @@ Here are some of the things you can do with RailsUrlShortener:
 
 ## Installation
 
-Follow these steps to install and configure RailsUrlShortener:
+Follow these steps to install and configure rails_url_shortener in your Rails application.
 
-1. Add this line to your application's Gemfile:
+1. Add the Gem
+Add the following line to your application's Gemfile:
 
 ```ruby
 gem "rails_url_shortener"
 ```
-
-2. Install the gem by running:
+2. Install the Gem
+Run the following command to install the gem:
 
 ```bash
 bundle install
 ```
-
-3. Install and run the migrations:
-
-```bash
-bin/rails rails_url_shortener:install:migrations db:migrate
-```
-
-4. Generate the initializer for configuration:
-
+3. Run the Generator
+Run the generator to set up the necessary files:
 ```bash
 rails generate rails_url_shortener
 ```
+This will:
+✅ Install and run the required migrations
 
-## Usage
-
-1. Mount the engine
-
-Mount the engine on your app adding the next code on your config/routes.rb:
+✅ Mount the engine
+An entry will be added to the bottom of your config/routes.rb file, mounting the engine at the root of your application.
 
-**If you want to mount this on the root of your app, this should be on the bottom of your routes file.**
+✅ Generate an initializer for further configuration`
 
-```ruby
-mount RailsUrlShortener::Engine, at: "/"
 
-```
+## Usage
 
-2. Generate the short link
+1. Generate the short link
 
 And generate the short links like you want:
 
@@ -80,7 +71,7 @@ short_url("https://www.github.com/a-chacon/rails-url-shortener")
 RailsUrlShortener::Url.generate("https://www.github.com/a-chacon/rails-url-shortener")
 ```
 
-3. Share the short link
+2. Share the short link
 
 **Then share the short link to your users or wherever you want.**
 

lib/generators/rails_url_shortener/rails_url_shortener_generator.rb

@@ -5,6 +5,22 @@
 class RailsUrlShortenerGenerator < Rails::Generators::Base
   source_root File.expand_path('templates', __dir__)
 
+  def install_and_run_migrations
+    if Rails.env.test?
+      puts 'Skipping migrations in test environment'
+    else
+      rake 'rails_url_shortener:install:migrations'
+      rake 'db:migrate'
+    end
+  end
+
+  def add_route_to_routes_file
+    # Mount the engine at the bottom of the routes file in the host application.
+    inject_into_file 'config/routes.rb', before: /\nend\s*\Z/ do
+      "\n  mount RailsUrlShortener::Engine, at: '/'"
+    end
+  end
+
   def copy
     copy_file 'initializer.rb', 'config/initializers/rails_url_shortener.rb'
   end

test/lib/generators/rails_url_shortener/rails_url_shortener_generator_test.rb

@@ -5,13 +5,26 @@ module RailsUrlShortener
   class RailsUrlShortenerGeneratorTest < Rails::Generators::TestCase
     tests RailsUrlShortenerGenerator
     destination Rails.root.join('tmp/generators')
+
     setup :prepare_destination
 
     test 'generator runs without errors' do
       assert_nothing_raised do
+        # create config/routes.rb in tmp/generators 
+        routes_file = File.join(destination_root, 'config', 'routes.rb')
+        FileUtils.mkdir_p(File.dirname(routes_file))
+        File.write(routes_file, "Rails.application.routes.draw do\nend")
+
         run_generator ['arguments']
       end
+
+      # Verify initializer file is created at config/initializers/shortener.rb
       assert_file 'config/initializers/rails_url_shortener.rb'
+
+      # Verify correct entry is added to config/routes.rb
+      assert_file 'config/routes.rb' do |content|
+        assert_match(%r{mount RailsUrlShortener::Engine, at: '/}, content)
+      end
     end
   end
 end