module Kanjai
  module ApplicationHelper
    def csrf_meta_tag
      if protect_against_forgery?
        out = %(<meta name="csrf-param" content="%s"/>\n)
        out << %(<meta name="csrf-token" content="%s"/>)
        out % [ Rack::Utils.escape_html(request_forgery_protection_token),
                Rack::Utils.escape_html(form_authenticity_token) ]
      else
        ''
      end
    end


    #link to delete
    def link_to_delete(resource, options = {})
      options.assert_valid_keys(:url,:caption,:title,:dataType,:success, :class, :name)

      options.reverse_merge! :class => ''
      options.reverse_merge! :name => 'Delete'

      options.reverse_merge! :url => resource_url(resource) unless options.key? :url
      options.reverse_merge! :caption => t('are you sure')
      options.reverse_merge! :title => t('confirm delete')
      options.reverse_merge! :dataType => 'script'
      options.reverse_merge! :success => "function(r) {jQuery('##{dom_id resource}').fadeOut('hide');}"



      link_to '' + options[:name],"javascript:jConfirm('#{options[:caption]}','#{options[:title]}',function(r){
			if(r){
				jQuery.ajax({
					type: 'POST',
					url: '#{options[:url]}',
					data: ({_method: 'delete'}),
					dataType: '#{options[:dataType]}',
					success: #{options[:success]}


				});
			}
		});", :class => "#{options[:class]}"

    end


    def link_to_add_fields(name, append_to_selector, f, association)
      new_object = f.object.class.reflect_on_association(association).klass.new
      fields = f.fields_for(association, new_object, :child_index => "new_#{association}") do |builder|
        render(association.to_s.singularize + "_fields", :f => builder, :parent_form => f)
      end
      link_to(name, "javascript:add_fields(\"#{append_to_selector}\",\"#{association}\",\"#{escape_javascript(fields)}\")", :class => "add_fields btn btn-large pull-right")
    end

    def link_to_remove_fields(name, f)
      f.hidden_field(:_destroy) + link_to(name, '#', :class => 'remove_fields btn  btn-danger ')
    end


    def error_messages(object,field)
      view_error = false
      view_error = true if object.errors.include?(field)
      content = ''
      if view_error
        message = object.errors.get(field)
        message = '&nbsp;' if message.nil?
        message = message.join(', ') if message.is_a?(Array)
        content += message
        content = ('<span class="help-block">' + content + '</span>').html_safe
      end
      content
    end

  end
end