module Alchemy
  module Admin
    class AttachmentsController < ResourcesController
      helper 'alchemy/admin/tags'

      def index
        @attachments = Attachment.all
        @attachments = @attachments.tagged_with(params[:tagged_with]) if params[:tagged_with].present?
        @attachments = @attachments.find_paginated(params, 15, sort_order)
        @options = options_from_params
        if in_overlay?
          archive_overlay
        end
      end

      # The resources controller renders the edit form as default for show actions.
      def show
        render :show
      end

      def new
        @attachment = Attachment.new
        if in_overlay?
          set_instance_variables
        end
      end

      def create
        @attachment = Attachment.new(attachment_attributes)
        if @attachment.save
          if in_overlay?
            set_instance_variables
          end
          message = _t('File uploaded succesfully', name: @attachment.name)
          render json: {files: [@attachment.to_jq_upload], growl_message: message}, status: :created
        else
          message = _t('File upload error', error: @attachment.errors[:file].join)
          render json: {files: [@attachment.to_jq_upload], growl_message: message}, status: :unprocessable_entity
        end
      end

      def update
        @attachment = Attachment.find(params[:id])
        @attachment.update_attributes(attachment_attributes)
        render_errors_or_redirect(
          @attachment,
          admin_attachments_path(page: params[:page], query: params[:query], per_page: params[:per_page]),
          _t("File successfully updated")
        )
      end

      def destroy
        @attachment = Attachment.find(params[:id])
        name = @attachment.name
        @attachment.destroy
        @url = admin_attachments_url(
          per_page: params[:per_page],
          page: params[:page],
          query: params[:query]
        )
        flash[:notice] = _t('File deleted successfully', name: name)
      end

      def download
        @attachment = Attachment.find(params[:id])
        send_data @attachment.file.data, {
          filename: @attachment.file_name,
          type: @attachment.file_mime_type
        }
      end

      private

      def in_overlay?
        params[:content_id].present?
      end

      def archive_overlay
        @content = Content.select('id').find_by(id: params[:content_id])
        @options = options_from_params
        respond_to do |format|
          format.html { render partial: 'archive_overlay' }
          format.js   { render action:  'archive_overlay' }
        end
      end

      def attachment_attributes
        params.require(:attachment).permit(:file, :name, :file_name, :tag_list)
      end

      def set_instance_variables
        @while_assigning = true
        @content = Content.select('id').find_by(id: params[:content_id])
        @swap = params[:swap]
        @options = options_from_params
      end

    end
  end
end