Add routes generator

.gitignore

@@ -23,3 +23,4 @@
 .ruby-gemset
 
 .env
+/spec/tmp/config/routes.rb

README.md

@@ -20,21 +20,40 @@ Or install it yourself as:
 
     $ gem install graphql_devise
 
-## Usage
-All configurations for [Devise](https://github.com/plataformatec/devise) and
-[Devise Token Auth](https://github.com/lynndylanhurley/devise_token_auth) are
-available, so you can read the docs there to customize your options.
+Next, you need to run the generator:
+
+    $ rails generate graphql_devise:install
+
+Graphql Devise generator will execute `Devise` and `Devise Token Auth`
+generators for you. These will make the required changes for the gems to
+work correctly. All configurations for [Devise](https://github.com/plataformatec/devise) and
+[Devise Token Auth](https://github.com/lynndylanhurley/devise_token_auth) are available,
+so you can read the docs there to customize your options.
 Configurations are done via initializer files as usual, one per gem.
-You can generate most of the configuration by using DTA's installer while we work
-on our own generators like this
+
+The generator accepts 2 params: `user_class` and `mount_path`. The params
+will be used mount the route in `config/routes.rb`. For instance the executing:
+
 ```bash
-$ rails g devise_token_auth:install User auth
+$ rails g graphql_devise:install Admin api/auth
 ```
-`User` could be any model name you are going to be using for authentication,
-and `auth` could be anything as we will be removing that from the routes file.
 
-### Mounting Routes
-First, you need to mount the gem in the routes file like this
+Will do the following:
+- Execute `Devise` install generator
+- Execute `Devise Token Auth` install generator with `Admin` and `api/auth` as params
+  - Find or create `Admin` model
+  - Add `devise` modules to `Admin` model
+  - Other changes that you can find [here](https://devise-token-auth.gitbook.io/devise-token-auth/config)
+- Add the route to `config/routes.rb`
+  - `mount_graphql_devise_for 'Admin', at: 'api/auth'
+
+`Admin` could be any model name you are going to be using for authentication,
+and `api/auth` could be any mount path you would like to use for auth.
+
+### Mounting Routes manually
+Routes can be added using the initializer or manually.
+You can add a route in the following way:
+
 ```ruby
 # config/routes.rb
 
@@ -50,8 +69,6 @@ Rails.application.routes.draw do
   )
 end
 ```
-If you used DTA's installer you will have to remove the `mount_devise_token_auth_for`
-line.
 
 Here are the options for the mount method:
 
@@ -107,6 +124,9 @@ class User < ApplicationRecord
 end
 ```
 
+The install generator can do this for you if you specify the `user_class` option.
+See [Installation](#Installation) for details.
+
 ### Customizing Email Templates
 The approach of this gem is a bit different from DeviseTokenAuth. We have placed our templates in `app/views/graphql_devise/mailer`,
 so if you want to change them, place yours on the same dir structure on your Rails project. You can customize these two templates:
@@ -132,6 +152,9 @@ class MyController < ApplicationController
 end
 ```
 
+The install generator can do this for you because it executes DTA installer.
+See [Installation](#Installation) for details.
+
 ### Making Requests
 Here is a list of the available mutations and queries assuming your mounted model
 is `User`.
@@ -167,7 +190,6 @@ templates.
 ## Future Work
 We will continue to improve the gem and add better docs.
 
-1. Add install generator.
 1. Add mount option that will create a separate schema for the mounted resource.
 1. Make sure this gem can correctly work alongside DTA and the original Devise gem.
 1. Improve DOCS.

graphql_devise.gemspec

@@ -41,4 +41,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rubocop-rspec'
   spec.add_development_dependency 'sqlite3', '~> 1.3'
   spec.add_development_dependency 'github_changelog_generator'
+  spec.add_development_dependency 'generator_spec'
 end

lib/generators/graphql_devise/install_generator.rb

@@ -0,0 +1,66 @@
+module GraphqlDevise
+  class InstallGenerator < ::Rails::Generators::Base
+    source_root File.expand_path('templates', __dir__)
+
+    argument :user_class, type: :string, default: 'User'
+    argument :mount_path, type: :string, default: 'auth'
+
+    def create_devise_initializer
+      generate 'devise:install'
+    end
+
+    def execute_dta_installer
+      generate 'devise_token_auth:install', "#{user_class} #{mount_path}"
+    end
+
+    def mount_resource_route
+      routes_file = 'config/routes.rb'
+      routes_path = File.join(destination_root, routes_file)
+      gem_helper  = 'mount_graphql_devise_for'
+      gem_route   = "#{gem_helper} '#{user_class}', at: '#{mount_path}'"
+      dta_route   = "mount_devise_token_auth_for '#{user_class}', at: '#{mount_path}'"
+      file_start  = 'Rails.application.routes.draw do'
+
+      if File.exist?(routes_path)
+        current_route = parse_file_for_line(routes_path, gem_route)
+
+        if current_route.present?
+          say_status('skipped', "Routes already exist for #{user_class} at #{mount_path}")
+        else
+          current_dta_route = parse_file_for_line(routes_path, dta_route)
+
+          if current_dta_route.present?
+            replace_line(routes_path, dta_route, gem_route)
+          else
+            insert_text_after_line(routes_path, file_start, gem_route)
+          end
+        end
+      else
+        say_status('skipped', "#{routes_file} not found. Add \"#{gem_route}\" to your routes file.")
+      end
+    end
+
+    private
+
+    def insert_text_after_line(filename, line, str)
+      gsub_file(filename, /(#{Regexp.escape(line)})/mi) do |match|
+        "#{match}\n  #{str}"
+      end
+    end
+
+    def replace_line(filename, old_line, new_line)
+      gsub_file(filename, /(#{Regexp.escape(old_line)})/mi, "  #{new_line}")
+    end
+
+    def parse_file_for_line(filename, str)
+      match = false
+
+      File.open(filename) do |f|
+        f.each_line do |line|
+          match = line if line =~ /(#{Regexp.escape(str)})/mi
+        end
+      end
+      match
+    end
+  end
+end

spec/dummy/config/locales/devise.en.yml

@@ -0,0 +1,65 @@
+# Additional translations at https://github.com/plataformatec/devise/wiki/I18n
+
+en:
+  devise:
+    confirmations:
+      confirmed: "Your email address has been successfully confirmed."
+      send_instructions: "You will receive an email with instructions for how to confirm your email address in a few minutes."
+      send_paranoid_instructions: "If your email address exists in our database, you will receive an email with instructions for how to confirm your email address in a few minutes."
+    failure:
+      already_authenticated: "You are already signed in."
+      inactive: "Your account is not activated yet."
+      invalid: "Invalid %{authentication_keys} or password."
+      locked: "Your account is locked."
+      last_attempt: "You have one more attempt before your account is locked."
+      not_found_in_database: "Invalid %{authentication_keys} or password."
+      timeout: "Your session expired. Please sign in again to continue."
+      unauthenticated: "You need to sign in or sign up before continuing."
+      unconfirmed: "You have to confirm your email address before continuing."
+    mailer:
+      confirmation_instructions:
+        subject: "Confirmation instructions"
+      reset_password_instructions:
+        subject: "Reset password instructions"
+      unlock_instructions:
+        subject: "Unlock instructions"
+      email_changed:
+        subject: "Email Changed"
+      password_change:
+        subject: "Password Changed"
+    omniauth_callbacks:
+      failure: "Could not authenticate you from %{kind} because \"%{reason}\"."
+      success: "Successfully authenticated from %{kind} account."
+    passwords:
+      no_token: "You can't access this page without coming from a password reset email. If you do come from a password reset email, please make sure you used the full URL provided."
+      send_instructions: "You will receive an email with instructions on how to reset your password in a few minutes."
+      send_paranoid_instructions: "If your email address exists in our database, you will receive a password recovery link at your email address in a few minutes."
+      updated: "Your password has been changed successfully. You are now signed in."
+      updated_not_active: "Your password has been changed successfully."
+    registrations:
+      destroyed: "Bye! Your account has been successfully cancelled. We hope to see you again soon."
+      signed_up: "Welcome! You have signed up successfully."
+      signed_up_but_inactive: "You have signed up successfully. However, we could not sign you in because your account is not yet activated."
+      signed_up_but_locked: "You have signed up successfully. However, we could not sign you in because your account is locked."
+      signed_up_but_unconfirmed: "A message with a confirmation link has been sent to your email address. Please follow the link to activate your account."
+      update_needs_confirmation: "You updated your account successfully, but we need to verify your new email address. Please check your email and follow the confirmation link to confirm your new email address."
+      updated: "Your account has been updated successfully."
+      updated_but_not_signed_in: "Your account has been updated successfully, but since your password was changed, you need to sign in again"
+    sessions:
+      signed_in: "Signed in successfully."
+      signed_out: "Signed out successfully."
+      already_signed_out: "Signed out successfully."
+    unlocks:
+      send_instructions: "You will receive an email with instructions for how to unlock your account in a few minutes."
+      send_paranoid_instructions: "If your account exists, you will receive an email with instructions for how to unlock it in a few minutes."
+      unlocked: "Your account has been unlocked successfully. Please sign in to continue."
+  errors:
+    messages:
+      already_confirmed: "was already confirmed, please try signing in"
+      confirmation_period_expired: "needs to be confirmed within %{period}, please request a new one"
+      expired: "has expired, please request a new one"
+      not_found: "not found"
+      not_locked: "was not locked"
+      not_saved:
+        one: "1 error prohibited this %{resource} from being saved:"
+        other: "%{count} errors prohibited this %{resource} from being saved:"

spec/generators/graphql_devise/install_generator_spec.rb

@@ -0,0 +1,52 @@
+# Generators are not automatically loaded by Rails
+require 'rails_helper'
+require 'generators/graphql_devise/install_generator'
+
+RSpec.describe GraphqlDevise::InstallGenerator, type: :generator do
+  destination File.expand_path('../../../tmp', __FILE__)
+
+  before do
+    prepare_destination
+  end
+
+  let(:routes_path)    { "#{destination_root}/config/routes.rb" }
+  let(:routes_content) { File.read(routes_path) }
+  let(:dta_route)      { "mount_devise_token_auth_for 'User', at: 'auth'" }
+
+  context 'when the file exists' do
+    before do
+      create_file_with_content(
+        routes_path,
+        "Rails.application.routes.draw do\n#{dta_route}\nend"
+      )
+    end
+
+    context 'when passing no params to the generator' do
+      before { run_generator }
+
+      it 'replaces dta route using the default values for class and path' do
+        generator_added_route = /  mount_graphql_devise_for 'User', at: 'auth'/
+        expect(routes_content).to match(generator_added_route)
+        expect(routes_content).not_to match(dta_route)
+      end
+    end
+
+    context 'when passing custom params to the generator' do
+      before { run_generator %w[Admin api] }
+
+      it 'add the routes using the provided values for class and path and keeps dta route' do
+        generator_added_route = /  mount_graphql_devise_for 'Admin', at: 'api'/
+        expect(routes_content).to match(generator_added_route)
+        expect(routes_content).to match(dta_route)
+      end
+    end
+  end
+
+  context 'when file does *NOT* exist' do
+    before { run_generator }
+
+    it 'does *NOT* create the file and throw no exception' do
+      expect(File.exist?(routes_path)).to be_falsey
+    end
+  end
+end

spec/rails_helper.rb

@@ -10,6 +10,7 @@
 # Add additional requires below this line. Rails is not loaded until this point!
 require 'factory_bot'
 require 'faker'
+require 'generator_spec'
 
 # Load RSpec helpers.
 Dir[File.join(ENGINE_ROOT, 'spec/support/**/*.rb')].each { |f| require f }
@@ -36,4 +37,5 @@
   config.include(Requests::JsonHelpers, type: :request)
   config.include(Requests::AuthHelpers, type: :request)
   config.include(ActiveSupport::Testing::TimeHelpers)
+  config.include(Generators::FileHelpers, type: :generator)
 end

spec/support/generators/file_helpers.rb

@@ -0,0 +1,12 @@
+require 'fileutils'
+
+module Generators
+  module FileHelpers
+    def create_file_with_content(path, content)
+      FileUtils.mkdir(File.dirname(path))
+      File.open(path, 'w') do |f|
+        f.write(content)
+      end
+    end
+  end
+end