1 files changed, 74 insertions, 0 deletions
diff --git a/app/helpers/avatars_helper.rb b/app/helpers/avatars_helper.rb
index 21b6c0a8ad5..d339c01d492 100644
--- a/app/helpers/avatars_helper.rb
+++ b/app/helpers/avatars_helper.rb
@@ -1,4 +1,78 @@
 module AvatarsHelper
+  def project_icon(project_id, options = {})
+    project =
+      if project_id.respond_to?(:avatar_url)
+        project_id
+      else
+        Project.find_by_full_path(project_id)
+      end
+
+    if project.avatar_url
+      image_tag project.avatar_url, options
+    else # generated icon
+      project_identicon(project, options)
+    end
+  end
+
+  def project_identicon(project, options = {})
+    allowed_colors = {
+      red: 'FFEBEE',
+      purple: 'F3E5F5',
+      indigo: 'E8EAF6',
+      blue: 'E3F2FD',
+      teal: 'E0F2F1',
+      orange: 'FBE9E7',
+      gray: 'EEEEEE'
+    }
+
+    options[:class] ||= ''
+    options[:class] << ' identicon'
+    bg_key = project.id % 7
+    style = "background-color: ##{allowed_colors.values[bg_key]}; color: #555"
+
+    content_tag(:div, class: options[:class], style: style) do
+      project.name[0, 1].upcase
+    end
+  end
+
+  # Takes both user and email and returns the avatar_icon by
+  # user (preferred) or email.
+  def avatar_icon_for(user = nil, email = nil, size = nil, scale = 2, only_path: true)
+    if user
+      avatar_icon_for_user(user, size, scale, only_path: only_path)
+    elsif email
+      avatar_icon_for_email(email, size, scale, only_path: only_path)
+    else
+      default_avatar
+    end
+  end
+
+  def avatar_icon_for_email(email = nil, size = nil, scale = 2, only_path: true)
+    user = User.find_by_any_email(email.try(:downcase))
+    if user
+      avatar_icon_for_user(user, size, scale, only_path: only_path)
+    else
+      gravatar_icon(email, size, scale)
+    end
+  end
+
+  def avatar_icon_for_user(user = nil, size = nil, scale = 2, only_path: true)
+    if user
+      user.avatar_url(size: size, only_path: only_path) || default_avatar
+    else
+      gravatar_icon(nil, size, scale)
+    end
+  end
+
+  def gravatar_icon(user_email = '', size = nil, scale = 2)
+    GravatarService.new.execute(user_email, size, scale) ||
+      default_avatar
+  end
+
+  def default_avatar
+    ActionController::Base.helpers.image_path('no_avatar.png')
+  end
+
   def author_avatar(commit_or_event, options = {})
     user_avatar(options.merge({
       user: commit_or_event.author,