require 'active_admin/views'
require 'active_admin/views/components/panel'

module ActiveAdmin
  module Comments
    module Views

      class Comments < ActiveAdmin::Views::Panel
        builder_method :active_admin_comments_for

        attr_accessor :resource

        def build(resource)
          if authorized?(ActiveAdmin::Auth::READ, ActiveAdmin::Comment)
            @resource = resource
            @comments = active_admin_authorization.scope_collection(ActiveAdmin::Comment.find_for_resource_in_namespace(resource, active_admin_namespace.name).includes(:author).page(params[:page]))
            super(title, for: resource)
            build_comments
          end
        end

        protected

        def title
          I18n.t 'active_admin.comments.title_content', count: @comments.total_count
        end

        def build_comments
          if @comments.any?
            @comments.each(&method(:build_comment))
            div page_entries_info(@comments).html_safe, class: 'pagination_information'
          else
            build_empty_message
          end

          text_node paginate @comments

          if authorized?(ActiveAdmin::Auth::CREATE, ActiveAdmin::Comment)
            build_comment_form
          end
        end

        def build_comment(comment)
          div for: comment do
            div class: 'active_admin_comment_meta' do
              h4 class: 'active_admin_comment_author' do
                comment.author ? auto_link(comment.author) : I18n.t('active_admin.comments.author_missing')
              end
              span pretty_format comment.created_at
              if authorized?(ActiveAdmin::Auth::DESTROY, comment)
                text_node link_to I18n.t('active_admin.comments.delete'), comments_url(comment.id), method: :delete, data: { confirm: I18n.t('active_admin.comments.delete_confirmation') }
              end
            end
            div class: 'active_admin_comment_body' do
              simple_format comment.body
            end
          end
        end

        def build_empty_message
          span I18n.t('active_admin.comments.no_comments_yet'), class: 'empty'
        end

        def comments_url(*args)
          parts = []
          parts << active_admin_namespace.name unless active_admin_namespace.root?
          parts << active_admin_namespace.comments_registration_name.underscore
          parts << 'path'
          send parts.join('_'), *args
        end

        def comment_form_url
          parts = []
          parts << active_admin_namespace.name unless active_admin_namespace.root?
          parts << active_admin_namespace.comments_registration_name.underscore.pluralize
          parts << 'path'
          send parts.join '_'
        end

        def build_comment_form
          active_admin_form_for(ActiveAdmin::Comment.new, url: comment_form_url) do |f|
            f.inputs do
              f.input :resource_type, as: :hidden,  input_html: { value: ActiveAdmin::Comment.resource_type(parent.resource) }
              f.input :resource_id,   as: :hidden,  input_html: { value: parent.resource.id }
              f.input :body,          label: false, input_html: { size: '80x8' }
            end
            f.actions do
              f.action :submit, label: I18n.t('active_admin.comments.add')
            end
          end
        end

        def default_id_for_prefix
          'active_admin_comments_for'
        end
      end

    end
  end
end