class RichGalleryInput < ::Formtastic::Inputs::StringInput
  include Formtastic::Helpers::InputHelper
  attr_reader :editor_options

  def to_html
    @editor_options = Rich.options(options[:config], object_name, object.id)

    local_input_options = {
      :class => 'rich-picker',
      :style => editor_options[:style]
    }

    input_wrapping do
      label_html <<
      input_field(local_input_options) <<
      preview <<
      javascript
    end
  end

  private

  def input_field(local_input_options)
    builder.hidden_field(method, local_input_options.merge(input_html_options))
  end

  def preview_image_path
    method_value = object.send(method)

    # return placeholder image if this is a non-image picker OR if there is no value set
    return editor_options[:placeholder_image] if editor_options[:type].to_s == 'file'
    return editor_options[:placeholder_image] unless method_value.present?

    column_type = column_for(method).type
    if column_type == :integer
      file = Rich::RichFile.find(method_value)
      file.rich_file.url(:rich_thumb) #we ask paperclip directly for the file, so asset paths should not be an issue
    else # should be :string
      method_value
    end
  end

  def button
    %Q{
        <a href='#{Rich.editor[:richBrowserUrl]}' class='button'>
          #{I18n.t('picker_browse')}
        </a>
    }.html_safe
  end

  def javascript
    %Q{
        <script>
          $(function(){
            $('##{input_html_options[:id]}_input img').click(function(e){
              e.preventDefault(); assetPicker.showFinder('##{input_html_options[:id]}', #{editor_options.to_json})
            });
          });
        </script>
    }.html_safe
  end

  def preview
    return unless editor_options[:type] != 'file'
    path = preview_image_path
    klass = "class='rich-image-preview'"
    style = "style='max-width:#{editor_options[:preview_size]}; max-height:#{editor_options[:preview_size]}; cursor:pointer;'"
    if path
      %Q{
          <img src='#{preview_image_path}' #{klass} #{style}>
      }.html_safe
    else
      %Q{
          <div #{klass} #{style}>
            <a href='#{Rich.editor[:richBrowserUrl]}'>
              <i class="fa fa-file-o fa-5x"></i>
            </a>
          </div>
      }.html_safe
    end
  end
end