def remove_gem(*names)
  names.each do |name|
    gsub_file 'Gemfile', /gem '#{name}'.*\n/, ''
  end
end

def remove_comment_of_gem
  gsub_file('Gemfile', /^\s*#.*$\n/, '')
end

def replace_myapp(file)
  gsub_file file, /myapp/, app_name, verbose: false
end

def get_remote(src, dest = nil)
  dest ||= src
  if ENV['RAILS_TEMPLATE_DEBUG'].present?
    repo = File.join(File.dirname(__FILE__), 'files/')
  else
    repo = 'https://raw.githubusercontent.com/dao42/rails-template/master/files/'
  end
  remote_file = repo + src
  get(remote_file, dest, force: true)
  replace_myapp(dest)
end

def get_remote_dir(names, dir)
  names.each do |name|
    src = File.join(dir, name)
    get_remote(src)
  end
end

def yarn(lib)
  run("yarn add #{lib}")
end

def remove_dir(dir)
  run("rm -rf #{dir}")
end

remove_comment_of_gem
# gitignore
get_remote('gitignore', '.gitignore')

# lock sprockets to 3.7 ignore this issue: https://github.com/rails/sprockets-rails/issues/444
gem 'sprockets-rails', '~> 3.2.1'
gem 'sprockets', '~> 3.7.2'
gem 'sassc-rails'

# postgresql
say 'Applying postgresql...'
remove_gem('sqlite3')
gem 'pg', '>= 1.1'
get_remote('config/database.yml.example')
get_remote('config/database.yml.example', 'config/database.yml')

# environment variables set
say 'Applying figaro...'
gem 'figaro'
get_remote('config/application.yml.example')
get_remote('config/application.yml.example', 'config/application.yml')
get_remote('config/spring.rb')

after_bundle do
  say "Stop spring if exists"
  run "spring stop"
end

say 'Applying jquery & font-awesome & bootstrap4...'
after_bundle do
  yarn 'webpack@^4.0.0'
  yarn 'jquery@^3.3.1'
  yarn 'expose-loader@^1.0.0'
  inject_into_file 'config/webpack/environment.js', after: "const { environment } = require('@rails/webpacker')\n" do <<~EOF

    const webpack = require('webpack')

    environment.plugins.append('Provide', new webpack.ProvidePlugin({
      $: 'jquery',
      jQuery: 'jquery',
      'window.jQuery': 'jquery',
      Popper: ['popper.js', 'default']
    }))

    environment.loaders.append('expose', {
      test: require.resolve('jquery'),
      use: [
        {
          loader: "expose-loader",
          options: {
            exposes: ["$", "jQuery"]
          }
        }
      ]
    })

    EOF
  end
  yarn '@fortawesome/fontawesome-free@^5.9.0'
  yarn 'popper.js@^1.14.7'
  yarn 'bootstrap@^4.3.1'
end

remove_dir 'app/assets'
jss = [ 'base.js' ]
get_remote_dir(jss, 'app/javascript/js')
images = [ 'favicon.ico' ]
get_remote_dir(images, 'app/javascript/images')
styles = [ 'application.scss', 'bootstrap_custom.scss', 'home.scss' ]
get_remote_dir(styles, 'app/javascript/styles')
packs = [ 'application.js' ]
get_remote_dir(packs, 'app/javascript/packs')

say 'Applying google anlytics...'
packs = [ 'ga.js.erb' ]
get_remote_dir(packs, 'app/javascript/packs')
after_bundle do
  rails_command 'webpacker:install:erb'
  remove_file('app/javascript/packs/hello_erb.js.erb')
end

say 'Applying simple_form...'
gem 'simple_form', '~> 4.1'
after_bundle do
  generate 'simple_form:install', '--bootstrap'
end

say 'Applying slim...'
gem 'slim-rails'
say 'Applying high_voltage...'
gem 'high_voltage', '~> 3.1'
get_remote('app/controllers/home_controller.rb')
get_remote('app/helpers/application_helper.rb')
get_remote('app/views/home/index.html.slim')
get_remote('app/views/pages/about.html.slim')
remove_file('app/views/layouts/application.html.erb')
get_remote('app/views/layouts/application.html.slim')

say 'Applying action cable config...'
inject_into_file 'config/environments/production.rb', after: "# Mount Action Cable outside main process or domain.\n" do <<-EOF
  config.action_cable.allowed_request_origins = [ "\#{ENV['PROTOCOL']}://\#{ENV['DOMAIN']}" ]
EOF
end

# active_storage
say 'Applying active_storage...'
after_bundle do
  rails_command 'active_storage:install'
end

say "Applying browser_warrior..."
gem 'browser_warrior', '>= 0.11.0'
after_bundle do
  generate 'browser_warrior:install'
end

say 'Applying redis & sidekiq...'
gem 'sidekiq', '~> 5'
get_remote('config/initializers/sidekiq.rb')
get_remote('config/sidekiq.yml')
get_remote('config/routes.rb')
get_remote('config/secret.yml')

say 'Applying adminlte 3...'
after_bundle do
  yarn 'admin-lte@^3.0.0-beta.1'
  yarn 'daterangepicker@^3.0.5'
  yarn 'moment-timezone'
  yarn 'tempusdominus-core'
end

styles = [ 'admin.scss' ]
get_remote_dir(styles, 'app/javascript/styles')
images = [ 'admin-user.jpg', 'logo.png' ]
get_remote_dir(images, 'app/javascript/images')
packs = [ 'admin.js' ]
get_remote_dir(packs, 'app/javascript/packs')
admin_jss = [ 'sidebar.js' ]
get_remote_dir(admin_jss, 'app/javascript/js/admin')

controllers = [ 'accounts_controller.rb', 'base_controller.rb', 'dashboard_controller.rb', 'sessions_controller.rb' ]
get_remote_dir(controllers, 'app/controllers/admin')
accounts_views = [ 'edit.html.slim' ]
get_remote_dir(accounts_views, 'app/views/admin/accounts')
dashboard_views = [ 'index.html.slim' ]
get_remote_dir(dashboard_views, 'app/views/admin/dashboard')
sessions_views = [ 'new.html.slim' ]
get_remote_dir(sessions_views, 'app/views/admin/sessions')
shared_admin_layouts = [ '_flash_messages.html.slim', '_header.html.slim', '_sidebar.html.slim' ]
get_remote_dir(shared_admin_layouts, 'app/views/shared/admin')
admin_layouts = [ 'admin.html.slim' ]
get_remote_dir(admin_layouts, 'app/views/layouts')
inject_into_file 'config/routes.rb', after: "Rails.application.routes.draw do\n" do <<-EOF

  namespace :admin do
    get 'login', to: 'sessions#new', as: :login
    post 'login', to: 'sessions#create'
    delete 'logout', to: 'sessions#destroy', as: :logout
    resource :account, only: [:edit, :update]

    root to: 'dashboard#index'
  end
EOF
end
# secure access for sidekiq
inject_into_file 'config/routes.rb', after: "Sidekiq::Web.set :session_secret, Rails.application.secrets[:secret_key_base]\n" do <<-EOF

class AdminConstraint
  def matches?(request)
    return false unless request.session[:current_admin_id].present?
    admin = Administrator.find_by(id: request.session[:current_admin_id])
    admin.present?
  end
end
EOF
end
inject_into_file 'config/routes.rb', after: "mount Sidekiq::Web => '/sidekiq'" do
  ', constraints: AdminConstraint.new'
end
# add db seeds
get_remote('db/seeds.rb')
gem 'bcrypt'
after_bundle do
  generate(:model, 'administrator', 'name:string:uniq:index', 'password:digest')
  inject_into_file 'app/models/administrator.rb', after: "class Administrator < ApplicationRecord\n" do <<-EOF
  validates :name, presence: true, uniqueness: true
EOF
  end
end

say 'Applying kaminari & rails-i18n...'
gem 'kaminari', github: 'kaminari/kaminari'
gem 'rails-i18n', '~> 6.0.0'
after_bundle do
  generate 'kaminari:config'
  generate 'kaminari:views', 'bootstrap4'
end

say 'Applying mina & its plugins...'
gem 'mina', '~> 1.2.2', require: false
gem 'mina-ng-puma', '>= 1.4.0', require: false
gem 'mina-multistage', require: false
gem 'mina-sidekiq', require: false
gem 'mina-logs', require: false
get_remote('config/deploy.rb')
get_remote('config/puma.rb')
get_remote('config/deploy/production.rb')
get_remote('config/nginx.conf.example')
get_remote('config/nginx.ssl.conf.example')
get_remote('config/logrotate.conf.example')

get_remote('config/monit.conf.example')
get_remote('config/backup.rb.example')

say 'Applying application config...'
inject_into_file 'config/application.rb', after: "class Application < Rails::Application\n" do <<-EOF
    config.generators.assets = false
    config.generators.helper = false

    config.time_zone = 'Beijing'
    config.i18n.available_locales = [:en, :'zh-CN']
    config.i18n.default_locale = :'zh-CN'
EOF
end

say 'Applying rspec test framework...'
gem_group :development do
  gem 'rails_apps_testing'
end
gem_group :development, :test do
  gem 'rspec-rails'
  gem 'factory_bot_rails'
end
gem_group :test do
  gem 'database_cleaner'
  gem 'launchy'
end
after_bundle do
  generate 'testing:configure', 'rspec --force'
end

get_remote 'README.md'
get_remote 'ackrc', '.ackrc'
get_remote 'bin/setup'

after_bundle do
  say 'Almost done! Now init `git` and `database`...'
  rails_command 'db:drop'
  rails_command 'db:create'
  rails_command 'db:migrate'
  rails_command 'db:seed'
  git :init
  git add: '.'
  git commit: '-m "init rails with dao42/rails-template"'
  say "Build successfully! `cd #{app_name}` First, then start `./bin/webpack-dev-server` first, input `rails s` to start your rails app..."
end