Fix processing of `Link` objects in `Image` objects (#29363)

app/services/activitypub/process_account_service.rb

@@ -201,10 +201,15 @@ class ActivityPub::ProcessAccountService < BaseService
     value = first_of_value(@json[key])
 
     return if value.nil?
-    return value['url'] if value.is_a?(Hash)
 
-    image = fetch_resource_without_id_validation(value)
+    if value.is_a?(String)
-    image['url'] if image
+      value = fetch_resource_without_id_validation(value)
+      return if value.nil?
+    end
+
+    value = first_of_value(value['url']) if value.is_a?(Hash) && value['type'] == 'Image'
+    value = value['href'] if value.is_a?(Hash)
+    value if value.is_a?(String)
   end
 
   def public_key

spec/services/activitypub/process_account_service_spec.rb

@@ -5,7 +5,7 @@ require 'rails_helper'
 RSpec.describe ActivityPub::ProcessAccountService, type: :service do
   subject { described_class.new }
 
-  context 'with property values' do
+  context 'with property values, an avatar, and a profile header' do
     let(:payload) do
       {
         id: 'https://foo.test',
@@ -16,19 +16,50 @@ RSpec.describe ActivityPub::ProcessAccountService, type: :service do
           { type: 'PropertyValue', name: 'Occupation', value: 'Unit test' },
           { type: 'PropertyValue', name: 'non-string', value: %w(foo bar) },
         ],
+        image: {
+          type: 'Image',
+          mediaType: 'image/png',
+          url: 'https://foo.test/image.png',
+        },
+        icon: {
+          type: 'Image',
+          url: [
+            {
+              mediaType: 'image/png',
+              href: 'https://foo.test/icon.png',
+            },
+          ],
+        },
       }.with_indifferent_access
     end
 
-    it 'parses out of attachment' do
+    before do
+      stub_request(:get, 'https://foo.test/image.png').to_return(request_fixture('avatar.txt'))
+      stub_request(:get, 'https://foo.test/icon.png').to_return(request_fixture('avatar.txt'))
+    end
+
+    it 'parses property values, avatar and profile header as expected' do
       account = subject.call('alice', 'example.com', payload)
-      expect(account.fields).to be_a Array
+
-      expect(account.fields.size).to eq 2
+      expect(account.fields)
-      expect(account.fields[0]).to be_a Account::Field
+        .to be_an(Array)
-      expect(account.fields[0].name).to eq 'Pronouns'
+        .and have_attributes(size: 2)
-      expect(account.fields[0].value).to eq 'They/them'
+      expect(account.fields.first)
-      expect(account.fields[1]).to be_a Account::Field
+        .to be_an(Account::Field)
-      expect(account.fields[1].name).to eq 'Occupation'
+        .and have_attributes(
-      expect(account.fields[1].value).to eq 'Unit test'
+          name: eq('Pronouns'),
+          value: eq('They/them')
+        )
+      expect(account.fields.last)
+        .to be_an(Account::Field)
+        .and have_attributes(
+          name: eq('Occupation'),
+          value: eq('Unit test')
+        )
+      expect(account).to have_attributes(
+        avatar_remote_url: 'https://foo.test/icon.png',
+        header_remote_url: 'https://foo.test/image.png'
+      )
     end
   end