Make default admin UI page reports. Add admin UI for creating a domain block

app/controllers/admin/domain_blocks_controller.rb

@@ -9,6 +9,24 @@ class Admin::DomainBlocksController < ApplicationController
     @blocks = DomainBlock.paginate(page: params[:page], per_page: 40)
   end
 
+  def new
+    @domain_block = DomainBlock.new
+  end
+
   def create
+    @domain_block = DomainBlock.new(resource_params)
+
+    if @domain_block.save
+      DomainBlockWorker.perform_async(@domain_block.id)
+      redirect_to admin_domain_blocks_path, notice: 'Domain block is now being processed'
+    else
+      render action: :new
+    end
+  end
+
+  private
+
+  def resource_params
+    params.require(:domain_block).permit(:domain, :severity)
   end
 end

app/services/block_domain_service.rb

@@ -1,13 +1,11 @@
 # frozen_string_literal: true
 
 class BlockDomainService < BaseService
-  def call(domain, severity)
-    DomainBlock.where(domain: domain).first_or_create!(domain: domain, severity: severity)
-
-    if severity == :silence
-      Account.where(domain: domain).update_all(silenced: true)
+  def call(domain_block)
+    if domain_block.silence?
+      Account.where(domain: domain_block.domain).update_all(silenced: true)
     else
-      Account.where(domain: domain).find_each do |account|
+      Account.where(domain: domain_block.domain).find_each do |account|
         account.subscription(api_subscription_url(account.id)).unsubscribe if account.subscribed?
         SuspendAccountService.new.call(account)
       end

app/views/admin/domain_blocks/index.html.haml

@@ -14,3 +14,4 @@
         %td= block.severity
 
 = will_paginate @blocks, pagination_options
+= link_to 'Add new', new_admin_domain_block_path, class: 'button'

app/views/admin/domain_blocks/new.html.haml

@@ -0,0 +1,18 @@
+- content_for :page_title do
+  New domain block
+
+= simple_form_for @domain_block, url: admin_domain_blocks_path do |f|
+  = render 'shared/error_messages', object: @domain_block
+
+  %p.hint The domain block will not prevent creation of account entries in the database, but will retroactively and automatically apply specific moderation methods on those accounts.
+
+  = f.input :domain, placeholder: 'Domain'
+  = f.input :severity, collection: DomainBlock.severities.keys, wrapper: :with_label, include_blank: false
+
+  %p.hint
+    %strong Silence
+    will make the account's posts invisible to anyone who isn't following them.
+    %strong Suspend
+    will remove all of the account's content, media, and profile data.
+  .actions
+    = f.button :button, 'Create block', type: :submit

app/workers/domain_block_worker.rb

@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class DomainBlockWorker
+  include Sidekiq::Worker
+
+  def perform(domain_block_id)
+    BlockDomainService.new.call(DomainBlock.find(domain_block_id))
+  rescue ActiveRecord::RecordNotFound
+    true
+  end
+end