Settings export refactor (#1646)

* Refactor Export to take an account and know about the export types

* Use Export instance in settings/exports#show

app/controllers/settings/exports/base_controller.rb

@@ -6,7 +6,7 @@ module Settings
       before_action :authenticate_user!
 
       def index
-        export_data = Export.new(export_accounts).to_csv
+        @export = Export.new(current_account)
 
         respond_to do |format|
           format.csv { send_data export_data, filename: export_filename }

app/controllers/settings/exports/blocked_accounts_controller.rb

@@ -5,8 +5,8 @@ module Settings
     class BlockedAccountsController < BaseController
       private
 
-      def export_accounts
-        current_account.blocking
+      def export_data
+        @export.to_blocked_accounts_csv
       end
     end
   end

app/controllers/settings/exports/following_accounts_controller.rb

@@ -5,8 +5,8 @@ module Settings
     class FollowingAccountsController < BaseController
       private
 
-      def export_accounts
-        current_account.following
+      def export_data
+        @export.to_following_accounts_csv
       end
     end
   end

app/controllers/settings/exports/muted_accounts_controller.rb

@@ -5,8 +5,8 @@ module Settings
     class MutedAccountsController < BaseController
       private
 
-      def export_accounts
-        current_account.muting
+      def export_data
+        @export.to_muted_accounts_csv
       end
     end
   end

app/controllers/settings/exports_controller.rb

@@ -6,9 +6,6 @@ class Settings::ExportsController < ApplicationController
   before_action :authenticate_user!
 
   def show
-    @total_storage = current_account.media_attachments.sum(:file_file_size)
-    @total_follows = current_account.following.count
-    @total_blocks  = current_account.blocking.count
-    @total_mutes = current_account.muting.count
+    @export = Export.new(current_account)
   end
 end