module CmAdmin::ViewHelpers::FieldDisplayHelper

def show_attachment_value(ar_object, field)
  if ar_object.send(field.field_name).attached?
    if ar_object.send(field.field_name).class.name.include?('One')
      content_tag :a, href: rails_blob_path(ar_object.send(field.field_name), disposition: "attachment") do
        ar_object.send(field.field_name).filename.to_s 
      end
    elsif ar_object.send(field.field_name).class.name.include?('Many')
      ar_object.send(field.field_name).map do |asset|
        content_tag :a, href: rails_blob_path(asset, disposition: "attachment") do
          asset.filename.to_s 
        end
      end.join("\n").html_safe
    end
  end
end

def show_field(ar_object, field)
  content_tag(:div, class: "info-split") do
    concat show_field_label(ar_object, field)
    concat show_field_value(ar_object, field)
  end
end

def show_field_label(ar_object, field)
  content_tag(:div, class: "info-split__lhs") do
    p = field.label.present? ? field.label.to_s : field.field_name.to_s.titleize
  end
end

def show_field_value(ar_object, field)
  content_tag(:div, class: "info-split__rhs") do
    case field.field_type || :string
    when :integer
      ar_object.send(field.field_name).to_s
    when :decimal
      ar_object.send(field.field_name).to_f.round(field.precision).to_s if ar_object.send(field.field_name)
    when :string
      ar_object.send(field.field_name).to_s
    when :datetime
      ar_object.send(field.field_name).strftime(field.format || "%d/%m/%Y").to_s if ar_object.send(field.field_name)
    when :text
      ar_object.send(field.field_name)
    when :custom
      send(field.helper_method, ar_object, field.field_name)
    when :link
      if field.custom_link
        link = field.custom_link
      else
        link = ar_object.send(field.field_name)
      end
      content_tag :a, href: link do
        ar_object.send(field.field_name).to_s
      end 
    when :attachment
      concat show_attachment_value(ar_object, field)
    end
  end
end