Initial commit

app/helpers/notes_helper.rb

@@ -0,0 +1,72 @@
+module NotesHelper
+  def notes_preview(notes)
+    NotePreview.new(self, notes).to_html
+  end
+
+  class NotePreview
+    def initialize(view, notes)
+      @view = view
+      @notes = notes
+    end
+
+    def to_html
+      return if notes.empty?
+
+      safe_join [
+        content,
+        tag(:br),
+        timestamp_with_author,
+        link_to_additional_notes,
+      ]
+    end
+
+    private
+
+    attr_reader :view, :notes
+
+    delegate :content_tag, :link_to, :mail_to, :pluralize, :safe_join, :tag, :time_ago_in_words, to: :view
+
+    def first_note
+      notes.first
+    end
+
+    def additional_notes
+      notes.drop(1)
+    end
+
+    def content
+      first_note.content
+    end
+
+    def link_to_additional_notes
+      return if additional_notes.empty?
+
+      badge = link_to([first_note.notable, :notes, locale: I18n.locale], remote: true, class: "badge badge-primary") do
+        pluralize(additional_notes.size, "more note")
+      end
+
+      safe_join [
+        tag(:br),
+        badge,
+      ]
+    end
+
+    def timestamp_with_author
+      content_tag(:small) do
+        safe_join [timestamp, author]
+      end
+    end
+
+    def timestamp
+      time_ago_in_words(first_note.created_at) + " ago "
+    end
+
+    def author_email
+      first_note.email
+    end
+
+    def author
+      safe_join ["(", mail_to(author_email), ")"]
+    end
+  end
+end