limited-effort/snfoil-rails

# frozen_string_literal: true

# Copyright 2021 Matthew Howes

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at

#   http://www.apache.org/licenses/LICENSE-2.0

# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

module SnFoil
  class ControllerGenerator < Rails::Generators::Base
    source_root File.expand_path('templates', __dir__)

    argument :model, type: :string

    class_option :type, desc: 'Generate Base or API', type: :string, default: 'base'
    class_option :path, desc: 'Base path for file', type: :string, default: 'app/controllers'

    def add_app_file
      template(template_name, "#{options[:path]}/#{file_name}_controller.rb")
    end

    private

    def file_name
      @file_name ||= if modules.length.zero?
                       name
                     else
                       "#{modules.join('/')}/#{name}"
                     end
    end

    def template_name
      @template_name ||= if options[:type] == 'api'
                           'api_controller.erb'
                         else
                           'controller.erb'
                         end
    end

    def name
      @name ||= model.split('/').last.underscore.pluralize
    end

    def class_name
      @class_name ||= name.camelize
    end

    def modules
      @modules ||= model.split('/')[0..-2].map(&:underscore)
    end

    def class_modules
      return if modules.length.zero?

      @class_modules ||= "#{modules.map(&:camelize).join('::')}::"
    end
  end
end