Migration: Importing user blocks

Migration: fix error on blocks import

lib/archive_importer.rb

@@ -18,6 +18,7 @@ def import
     import_relayables
     import_subscriptions
     import_others_relayables
+    import_blocks
   end
 
   def create_user(attr)
@@ -86,6 +87,10 @@ def import_others_relayables
     import_collection(others_relayables, EntityImporter)
   end
 
+  def import_blocks
+    import_collection(blocks, BlockImporter)
+  end
+
   def import_collection(collection, importer_class)
     collection.each do |object|
       importer_class.new(object, user).import

lib/archive_importer/archive_helper.rb

@@ -34,6 +34,10 @@ def person
       @person ||= Person.find_or_fetch_by_identifier(archive_author_diaspora_id)
     end
 
+    def blocks
+      @blocks ||= archive_hash.fetch("user").fetch("blocks", [])
+    end
+
     def private_key
       OpenSSL::PKey::RSA.new(serialized_private_key)
     end

lib/archive_importer/block_importer.rb

@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+class ArchiveImporter
+  class BlockImporter
+    include Diaspora::Logging
+    attr_reader :json, :user
+
+    def initialize(json, user)
+      @json = json
+      @user = user
+    end
+
+    def import
+      p = Person.find_or_fetch_by_identifier(json)
+      migrant_person = handle_migrant_person(p)
+      user.blocks.create(person_id: migrant_person.id)
+    rescue ActiveRecord::RecordInvalid,
+           DiasporaFederation::Discovery::DiscoveryError => e
+      logger.warn "#{self}: #{e}"
+    end
+
+    private
+
+    def handle_migrant_person(person)
+      return person if person.account_migration.nil?
+
+      person.account_migration.newest_person
+    end
+  end
+end

spec/lib/archive_importer/block_importer_spec.rb

@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+describe ArchiveImporter::BlockImporter do
+  let(:target) { FactoryBot.create(:user) }
+
+  describe "#import" do
+    it "adds a block entry to the user" do
+      person_to_block = FactoryBot.create(:person)
+      block_importer = ArchiveImporter::BlockImporter.new(person_to_block.diaspora_handle, target)
+      block_importer.import
+
+      expect(target.blocks.count).to eq(1)
+      expect(target.blocks.first.person_id).to eq(person_to_block.id)
+    end
+
+    it "handles unfetchable person to block" do
+      expect_any_instance_of(DiasporaFederation::Discovery::Discovery).to receive(:fetch_and_save).and_raise(
+        DiasporaFederation::Discovery::DiscoveryError, "discovery error reasons"
+      )
+
+      block_importer = ArchiveImporter::BlockImporter.new("unknown_person@bad_pod.tld", target)
+      block_importer.import
+
+      expect(target.blocks).to be_empty
+    end
+  end
+end