Demo for the week 8 20in20 project.

week8demo.rb

# frozen_string_literal: true

require 'fileutils'
require 'rails'

def add_gems
  gem 'devise'
  gem 'simple_form'
end

def setup_simple_form
  generate 'simple_form:install --bootstrap'
end

def setup_users
  generate 'devise:install'
  environment "config.action_mailer.default_url_options = { host: 'localhost', port: 3000}",
              env: 'development'
  generate :devise, 'User', 'username:string:uniq', 'admin:boolean'
  rails_command 'db:migrate'
  generate 'devise:views'
  in_root do
    migration = Dir.glob('db/migrate/*').max_by { |f| File.mtime(f) }
    gsub_file migration, /:admin/, ':admin, default: false'
  end

  inject_into_file 'app/controllers/application_controller.rb', before: 'end' do
    "\n before_action :configure_permitted_parameters, if: :devise_controller?
		\n\n
		  protected
		\n\n
		    def configure_permitted_parameters
		        \nadded_attrs = [:username, :email, :password, :password_confirmation, :remember_me]
			    \ndevise_parameter_sanitizer.permit :sign_up, keys: added_attrs
			        \ndevise_parameter_sanitizer.permit :account_update, keys: added_attrs
				  \nend\n\n"
  end

  inject_into_file 'app/models/user.rb', before: 'end' do
    "\n  validates :username, presence: true, uniqueness: { case_sensitive: false }
		  validate :validate_username
		  attr_writer :login
			def login
		    @login || self.username || self.email
		  end
		  def validate_username
		    if User.where(email: username).exists?
					errors.add(:username, :invalid)
		    end
			end
			def self.find_for_database_authentication(warden_conditions)
				conditions = warden_conditions.dup
				if login = conditions.delete(:login)
					where(conditions.to_h).where(['lower(username) = :value OR lower(email) = :value', { :value => login.downcase }]).first
				elsif conditions.has_key?(:username) || conditions.has_key?(:email)
					where(conditions.to_h).first
				end
			end\n"
  end

  inject_into_file 'config/initializers/devise.rb', after: '# config.authentication_keys = [:email]' do
    "\nconfig.authentication_keys = [ :login ]\n\n"
  end

  find_and_replace_in_file('app/views/devise/sessions/new.html.erb', "email", "login")

  inject_into_file 'app/views/devise/registrations/new.html.erb', before: '<%= f.input :email' do
    "\n<%= f.input :username %>"
  end

  inject_into_file 'app/views/devise/registrations/edit.html.erb', before: '<%= f.input :email' do
    "\n<%= f.input :username %>"
  end
end

def find_and_replace_in_file(file_name, _old_content, new_content)
  text = File.read(file_name)
  new_contents = text.gsub(_old_content, new_content)
  File.open(file_name, 'w') { |file| file.write new_contents }
end

def source_paths
  [__dir__]
end

def add_boostrap
  run 'yarn add bootstrap jquery popper.js'
  inject_into_file 'config/webpack/environment.js', before: 'module.exports = environment' do
    "const webpack = require('webpack')
		environment.plugins.append('Provide',
		new webpack.ProvidePlugin({
			$: 'jquery',
			jQuery: 'jquery',
			Popper: ['popper.js', 'default']
		})
	)\n"
  end
  inject_into_file 'app/javascript/packs/application.js', after: '// const imagePath = (name) => images(name, true)' do
    "\nimport 'bootstrap';
		import './stylesheets/application.scss';\n"
  end
  FileUtils.mkdir_p('app/javascript/packs/stylesheets')
  app_scss = 'app/javascript/packs/stylesheets/application.scss'
  FileUtils.touch(app_scss)
  append_to_file app_scss do
    "\n@import '~bootstrap/scss/bootstrap';\n"
  end
end

def add_bootstrap_navbar
  navbar = 'app/views/layouts/_navbar.html.erb'
  FileUtils.touch(navbar)
  inject_into_file 'app/views/layouts/application.html.erb', before: '<%= yield %>' do
    "\n<%= render 'layouts/navbar' %>\n"
  end
  append_to_file navbar do
    '<nav class="navbar navbar-expand-lg navbar-light bg-light">
    <%= link_to Rails.application.class.parent_name, root_path, class:"navbar-brand"%>
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
    </button>

    <div class="collapse navbar-collapse" id="navbarSupportedContent">
        <ul class="navbar-nav mr-auto">
            <li class="nav-item active">
                <%= link_to "Home", root_path, class:"nav-link" %>
            </li>
            <li class="nav-item">
                <%= link_to "Posts", posts_path, class:"nav-link" %>
            </li>
        </ul>
        <ul class="navbar-nav ml-auto">
            <% if current_user %>
            <li class="nav-item dropdown">
                <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                    <%= current_user.username %>
                </a>
                <div class="dropdown-menu dropdown-menu-right" aria-labelledby="navbarDropdown">
                    <%= link_to "Account Settings", edit_user_registration_path, class:"dropdown-item" %>
                    <div class="dropdown-divider"></div>
                    <%= link_to "Logout", destroy_user_session_path, method: :delete, class:"dropdown-item" %>
                </div>
            </li>
            <% else %>
            <li class="nav-item">
                <%= link_to "Create An Account", new_user_registration_path, class:"nav-link" %>
            </li>
            <li class="nav-item">
                <%= link_to "Login", new_user_session_path, class:"nav-link" %>
            </li>
            <% end %>
        </ul>
    </div>
</nav>'
  end
end

source_paths

add_gems

after_bundle do
  setup_simple_form
  setup_users

  generate(:controller, 'pages home')
  route "root to: 'pages#home'"
  rails_command 'g scaffold post title:string body:text --no-scaffold-stylesheet'
  rails_command 'db:migrate'
  add_boostrap
  add_bootstrap_navbar
end