Add featured hashtags to profiles (#9755)

* Add hashtag filter to profiles

GET /@:username/tagged/:hashtag
GET /api/v1/accounts/:id/statuses?tagged=:hashtag

* Display featured hashtags on public profile

* Use separate model for featured tags

* Update featured hashtag counters on-write

* Limit featured tags to 10

1 files changed, 51 insertions, 0 deletions

diff --git a/app/controllers/settings/featured_tags_controller.rb b/app/controllers/settings/featured_tags_controller.rb
new file mode 100644
index 000000000..19815e416
--- /dev/null
+++ b/app/controllers/settings/featured_tags_controller.rb
@@ -0,0 +1,51 @@
+# frozen_string_literal: true
+
+class Settings::FeaturedTagsController < Settings::BaseController
+  layout 'admin'
+
+  before_action :authenticate_user!
+  before_action :set_featured_tags, only: :index
+  before_action :set_featured_tag, except: [:index, :create]
+  before_action :set_most_used_tags, only: :index
+
+  def index
+    @featured_tag = FeaturedTag.new
+  end
+
+  def create
+    @featured_tag = current_account.featured_tags.new(featured_tag_params)
+    @featured_tag.reset_data
+
+    if @featured_tag.save
+      redirect_to settings_featured_tags_path
+    else
+      set_featured_tags
+      set_most_used_tags
+
+      render :index
+    end
+  end
+
+  def destroy
+    @featured_tag.destroy!
+    redirect_to settings_featured_tags_path
+  end
+
+  private
+
+  def set_featured_tag
+    @featured_tag = current_account.featured_tags.find(params[:id])
+  end
+
+  def set_featured_tags
+    @featured_tags = current_account.featured_tags.reject(&:new_record?)
+  end
+
+  def set_most_used_tags
+    @most_used_tags = Tag.most_used(current_account).where.not(id: @featured_tags.map(&:id)).limit(10)
+  end
+
+  def featured_tag_params
+    params.require(:featured_tag).permit(:name)
+  end
+end