module Firestarter
  class AppBuilder < Rails::AppBuilder # rubocop:disable Metrics/ClassLength
    include Firestarter::Actions

    def readme
      template "README.md.erb", "README.md"
    end

    def rakefile
      template "Rakefile.erb", "Rakefile"
    end

    def raise_on_delivery_errors
      replace_in_file "config/environments/development.rb",
        "raise_delivery_errors = false", "raise_delivery_errors = true"
    end

    def raise_on_unpermitted_parameters
      action_on_unpermitted_parameters = <<-RUBY

  # Raise an ActionController::UnpermittedParameters exception when
  # a parameter is not explcitly permitted but is passed anyway.
  config.action_controller.action_on_unpermitted_parameters = :raise
      RUBY
      inject_into_file(
        "config/environments/development.rb",
        action_on_unpermitted_parameters,
        before: "\nend",
      )
    end

    def provide_setup_script
      remove_file "bin/setup"
      copy_file "bin_setup", "bin/setup"
      run "chmod a+x bin/setup"
    end

    def provide_dev_prime_task
      copy_file "development_seeds.rb", "lib/tasks/development_seeds.rake"
    end

    def configure_generators # rubocop:disable Metrics/MethodLength
      config = <<-RUBY
    config.generators do |generate|
      generate.helper false
      generate.javascript_engine false
      generate.request_specs false
      generate.routing_specs false
      generate.stylesheets false
      generate.test_framework :rspec
      generate.view_specs false
    end

      RUBY

      inject_into_class "config/application.rb", "Application", config
    end

    def enable_factory_girl_syntax
      copy_file "factory_girl_syntax_rspec.rb", "spec/support/factory_girl.rb"
    end

    def test_factories_first
      copy_file "factories_spec.rb", "spec/models/factories_spec.rb"
      append_file "Rakefile", factories_spec_rake_task
    end

    def configure_smtp
      copy_file "smtp.rb", "config/initializers/smtp.rb"

      prepend_file "config/environments/production.rb",
        "require Rails.root.join('config/initializers/smtp')\n"

      config = <<-RUBY

  config.action_mailer.delivery_method = :smtp
  config.action_mailer.smtp_settings = SMTP_SETTINGS
      RUBY

      inject_into_file "config/environments/production.rb", config,
        after: "config.action_mailer.raise_delivery_errors = false"
    end

    def enable_rack_deflater
      config = <<-RUBY

  # Enable deflate / gzip compression of controller-generated responses
  config.middleware.use Rack::Deflater
      RUBY

      inject_into_file "config/environments/production.rb", config,
        after: "config.serve_static_assets = false\n"
    end

    def setup_staging_environment
      staging_file = "config/environments/staging.rb"
      copy_file "staging.rb", staging_file

      config = <<-RUBY

#{app_name.classify}::Application.configure do
  # ...
end
      RUBY

      append_file staging_file, config
    end

    def setup_secret_token
      template "secret_token.rb.erb",
        "config/initializers/secret_token.rb",
        force: true
    end

    def create_partials_directory
      empty_directory "app/views/application"
    end

    def create_shared_flashes
      copy_file "_flashes.slim", "app/views/application/_flashes.slim"
    end

    def create_shared_javascripts
      copy_file "_javascript.slim", "app/views/application/_javascript.slim"
    end

    def create_application_layout
      remove_file "app/views/layouts/application.html.erb"
      template "firestarter_layout.slim.erb",
        "app/views/layouts/application.slim",
        force: true
    end

    def remove_turbolinks
      replace_in_file "app/assets/javascripts/application.js",
        %r{//= require turbolinks\n},
        ""
    end

    def remove_require_tree
      replace_in_file "app/assets/javascripts/application.js",
        %r{//= require_tree .\n},
        ""
    end

    def add_retina_tag
      append_to_file "app/assets/javascripts/application.js",
        "//= require retina_tag\n"
    end

    def use_postgres_config_template
      template "postgresql_database.yml.erb", "config/database.yml",
        force: true
    end

    def use_rubocop_config
      download_file(
        "https://github.com/subvisual/guides/blob/master/linters/ruby/.rubocop.yml",
        ".rubocop.yml"
      )
    end

    def create_database
      bundle_command "exec rake db:create db:migrate"
    end

    def replace_gemfile
      remove_file "Gemfile"
      template "Gemfile.erb", "Gemfile"
    end

    def set_ruby_to_version_being_used
      template "ruby-version.erb", ".ruby-version"
    end

    def enable_unobtrusive_pry_in_specs
      copy_file "unobtrusive_pry.rb", "spec/support/pry.rb"
    end

    def enable_database_cleaner
      copy_file "database_cleaner_rspec.rb", "spec/support/database_cleaner.rb"
    end

    def configure_spec_support_features
      empty_directory_with_keep_file "spec/features"
      empty_directory_with_keep_file "spec/support/features"
    end

    def configure_rspec
      remove_file "spec/spec_helper.rb"
      copy_file "spec_helper.rb", "spec/spec_helper.rb"
    end

    def configure_i18n_in_specs
      copy_file "i18n.rb", "spec/support/i18n.rb"
    end

    def configure_time_zone
      config = <<-RUBY
    config.active_record.default_timezone = :utc

      RUBY
      inject_into_class "config/application.rb", "Application", config
    end

    def configure_time_formats
      remove_file "config/locales/en.yml"
      copy_file "config_locales_en.yml", "config/locales/en.yml"
    end

    def configure_rack_timeout
      copy_file "rack_timeout.rb", "config/initializers/rack_timeout.rb"
    end

    def configure_slim
      copy_file "slim.rb", "config/initializers/slim.rb"
    end

    def configure_action_mailer
      action_mailer_host "development", "#{app_name}.local"
      action_mailer_host "test", "www.example.com"
      action_mailer_host "staging", "staging.#{app_name}.com"
      action_mailer_host "production", "#{app_name}.com"
    end

    def fix_i18n_deprecation_warning
      config = <<-RUBY
    config.i18n.enforce_available_locales = true

      RUBY
      inject_into_class "config/application.rb", "Application", config
    end

    def generate_rspec
      generate "rspec:install"
    end

    def configure_puma
      copy_file "puma.rb", "config/puma.rb", force: true
    end

    def setup_foreman
      copy_file "sample.env", ".sample.env"
      copy_file "Procfile", "Procfile"
    end

    def setup_stylesheets
      remove_file "app/assets/stylesheets/application.css"
      copy_file "application.sass",
        "app/assets/stylesheets/application.sass"
    end

    def gitignore_files # rubocop:disable Metrics/MethodLength
      remove_file ".gitignore"
      copy_file "firestarter_gitignore", ".gitignore"
      [
        "app/views/pages",
        "spec/lib",
        "spec/controllers",
        "spec/helpers",
        "spec/support/matchers",
        "spec/support/mixins",
        "spec/support/shared_examples",
      ].each do |dir|
        run "mkdir #{dir}"
        run "touch #{dir}/.keep"
      end
    end

    def init_git
      run "git init"
    end

    def customize_error_pages
      meta_tags = <<-EOS
  <meta charset='utf-8' />
  <meta name='ROBOTS' content='NOODP' />
      EOS

      %w(500 404 422).each do |page|
        inject_into_file "public/#{page}.html", meta_tags, after: "<head>\n"
        replace_in_file "public/#{page}.html", /<!--.+-->\n/, ""
      end
    end

    def remove_routes_comment_lines
      replace_in_file "config/routes.rb",
        /Rails.application\.routes\.draw do.*end/m,
        "Rails.application.routes.draw do\nend"
    end

    def disable_xml_params
      copy_file "disable_xml_params.rb", "config/initializers/disable_xml_params.rb"
    end

    def scss_lint_config
      copy_file "scss-lint.yml", ".scss-lint.yml"
    end

    def setup_default_rake_task
      append_file "Rakefile" do
        "task(:default).clear\ntask :default => [:spec]\n"
      end
    end

    def setup_metrics
      copy_file "metrics", ".metrics"
      copy_file "metrics.reek", ".metrics.reek"
    end

    private

    def override_path_for_tests
      if ENV["TESTING"]
        support_bin = File.expand_path(File.join("..", "..", "spec", "fakes", "bin"))
        "PATH=#{support_bin}:$PATH"
      end
    end

    def factories_spec_rake_task
      IO.read find_in_source_paths("factories_spec_rake_task.rb")
    end

    def generate_secret
      SecureRandom.hex(64)
    end
  end
end