Refactor and spec coverage for api/v1/timelines actions (#3482)

1 files changed, 54 insertions, 36 deletions

diff --git a/app/controllers/api/v1/timelines/tag_controller.rb b/app/controllers/api/v1/timelines/tag_controller.rb
index 818f49d3d..0481f5deb 100644
--- a/app/controllers/api/v1/timelines/tag_controller.rb
+++ b/app/controllers/api/v1/timelines/tag_controller.rb
@@ -1,51 +1,69 @@
 # frozen_string_literal: true
 
-module Api::V1::Timelines
-  class TagController < BaseController
-    before_action :load_tag
+class Api::V1::Timelines::TagController < ApiController
+  before_action :load_tag
+  after_action :insert_pagination_headers, unless: -> { @statuses.empty? }
 
-    def show
-      @statuses = load_statuses
-    end
+  respond_to :json
 
-    private
+  def show
+    @statuses = load_statuses
+    render 'api/v1/timelines/show'
+  end
 
-    def load_tag
-      @tag = Tag.find_by(name: params[:id].downcase)
-    end
+  private
 
-    def load_statuses
-      cached_tagged_statuses.tap do |statuses|
-        set_maps(statuses)
-      end
-    end
+  def load_tag
+    @tag = Tag.find_by(name: params[:id].downcase)
+  end
 
-    def cached_tagged_statuses
-      cache_collection tagged_statuses
+  def load_statuses
+    cached_tagged_statuses.tap do |statuses|
+      set_maps(statuses)
     end
+  end
 
-    def tagged_statuses
-      if @tag.nil?
-        []
-      else
-        tag_timeline_statuses.paginate_by_max_id(
-          limit_param(DEFAULT_STATUSES_LIMIT),
-          params[:max_id],
-          params[:since_id]
-        )
-      end
-    end
+  def cached_tagged_statuses
+    cache_collection tagged_statuses, Status
+  end
 
-    def tag_timeline_statuses
-      Status.as_tag_timeline(@tag, current_account, params[:local])
+  def tagged_statuses
+    if @tag.nil?
+      []
+    else
+      tag_timeline_statuses.paginate_by_max_id(
+        limit_param(DEFAULT_STATUSES_LIMIT),
+        params[:max_id],
+        params[:since_id]
+      )
     end
+  end
 
-    def next_path
-      api_v1_timelines_tag_url params[:id], pagination_params(max_id: @statuses.last.id)
-    end
+  def tag_timeline_statuses
+    Status.as_tag_timeline(@tag, current_account, params[:local])
+  end
 
-    def prev_path
-      api_v1_timelines_tag_url params[:id], pagination_params(since_id: @statuses.first.id)
-    end
+  def insert_pagination_headers
+    set_pagination_headers(next_path, prev_path)
+  end
+
+  def pagination_params(core_params)
+    params.permit(:local, :limit).merge(core_params)
+  end
+
+  def next_path
+    api_v1_timelines_tag_url params[:id], pagination_params(max_id: pagination_max_id)
+  end
+
+  def prev_path
+    api_v1_timelines_tag_url params[:id], pagination_params(since_id: pagination_since_id)
+  end
+
+  def pagination_max_id
+    @statuses.last.id
+  end
+
+  def pagination_since_id
+    @statuses.first.id
   end
 end