module ActiveScaffold::Actions
  module Delete
    def self.included(base)
      base.before_filter :delete_authorized_filter, :only => [:destroy]
    end

    def destroy
      params.delete :destroy_action
      process_action_link_action(:destroy) do |record|
        do_destroy
      end
    end

    protected
    def destroy_respond_to_html
      if self.successful?
        flash[:info] = as_(:deleted_model, :model => @record.to_label)
      else
        #error_message_for not available in controller...
        #flash[:error] = active_scaffold_error_messages_for(@record, :object_name => "#{@record.class.model_name.human.downcase}#{@record.new_record? ? '' : ": #{@record.to_label}"}", :header_message => '', :message => "#{@record.class.model_name.human.downcase}#{@record.new_record? ? '' : ": #{@record.to_label}"}", :container_tag => nil, :list_type => :br)
      end
      return_to_main
    end

    def destroy_respond_to_js
      if successful? && active_scaffold_config.delete.refresh_list && !render_parent?
        do_search if respond_to? :do_search
        do_list
      end
      render(:action => 'destroy')
    end

    def destroy_respond_to_xml
      column_names = successful? ? [active_scaffold_config.model.primary_key] : error_object_attributes
      render :xml => successful? ? "" : response_object.to_xml(:only => column_names), :content_type => Mime::XML, :status => response_status
    end

    def destroy_respond_to_json
      column_names = successful? ? [active_scaffold_config.model.primary_key] : error_object_attributes
      render :text => successful? ? "" : response_object.to_json(:only => column_names), :content_type => Mime::JSON, :status => response_status
    end

    def destroy_respond_to_yaml
      column_names = successful? ? [active_scaffold_config.model.primary_key] : error_object_attributes
      render :text => successful? ? "" : Hash.from_xml(response_object.to_xml(:only => column_names)).to_yaml, :content_type => Mime::YAML, :status => response_status
    end

    def destroy_find_record
      @record = find_if_allowed(params[:id], :delete)
    end

    # A simple method to handle the actual destroying of a record
    # May be overridden to customize the behavior
    def do_destroy
      @record ||= destroy_find_record
      begin
        self.successful = @record.destroy
      rescue
        flash[:warning] = as_(:cant_destroy_record, :record => @record.to_label)
        self.successful = false
      end
    end

    # The default security delegates to ActiveRecordPermissions.
    # You may override the method to customize.
    def delete_authorized?(record = nil)
      (!nested? || !nested.readonly?) && authorized_for?(:crud_type => :delete)
    end
    private
    def delete_authorized_filter
      link = active_scaffold_config.delete.link || active_scaffold_config.delete.class.link
      raise ActiveScaffold::ActionNotAllowed unless self.send(link.security_method)
    end
    def destroy_formats
      (default_formats + active_scaffold_config.formats + active_scaffold_config.delete.formats).uniq
    end
  end
end