Adding domain blocks

app/services/block_domain_service.rb

@@ -0,0 +1,13 @@
+class BlockDomainService < BaseService
+  def call(domain)
+    block = DomainBlock.find_or_create_by!(domain: domain)
+
+    Account.where(domain: domain).find_each do |account|
+      if account.subscribed?
+        account.subscription('').unsubscribe
+      end
+
+      account.destroy!
+    end
+  end
+end

app/services/follow_remote_account_service.rb

@@ -8,6 +8,7 @@ class FollowRemoteAccountService < BaseService
     username, domain = uri.split('@')
 
     return Account.find_local(username) if TagManager.instance.local_domain?(domain)
+    return nil if DomainBlock.blocked?(domain)
 
     account = Account.find_remote(username, domain)
 

app/services/process_interaction_service.rb

@@ -13,6 +13,8 @@ class ProcessInteractionService < BaseService
     domain   = Addressable::URI.parse(url).host
     account  = Account.find_by(username: username, domain: domain)
 
+    return if DomainBlock.blocked?(domain)
+
     if account.nil?
       account = follow_remote_account_service.call("#{username}@#{domain}")
     end