Add rake task to update missing replacement links

We've identified a bug where if the user replaces an attachments on a new draft,
without having saved the edition draft first, the supposedly replaced original
asset remains live, because it fails to redirect to its replacement.

Rerunning the updater on the original attachment's AttachmentData should send
the correct `replacement_id` field to `asset-manager`, and fix the data.

This is only a data patch solution.
A fix for the issue will be implemented separately.

lib/tasks/attachments/fix_missing_asset_replacement_links.rake

@@ -0,0 +1,21 @@
+desc "Fix missing replacement links"
+task :fix_missing_asset_replacement_links, %i[csv_path] => :environment do |_, args|
+  csv_path = args[:csv_path]
+
+  CSV.foreach(csv_path, headers: false) do |row|
+    attachment_data_id = row[0]
+    attachment_data = AttachmentData.find(attachment_data_id)
+
+    if attachment_data.replaced_by_id.nil?
+      puts "ERROR - ad: #{attachment_data.id} does not have a replacement."
+      next
+    end
+
+    begin
+      AssetManager::AttachmentUpdater.replace(attachment_data)
+      puts "OK - ad: #{attachment_data_id}" << "\n"
+    rescue StandardError => e
+      puts "ERROR - ad: #{attachment_data_id}, message: #{e.message}" << "\n"
+    end
+  end
+end

test/unit/lib/tasks/attachments/fix_missing_asset_replacement_links_test.rb

@@ -0,0 +1,89 @@
+require "test_helper"
+require "rake"
+
+class FixMissingAssetReplacementLinksTest < ActiveSupport::TestCase
+  extend Minitest::Spec::DSL
+
+  describe "fix_missing_asset_replacement_links" do
+    let(:task) { Rake::Task["fix_missing_asset_replacement_links"] }
+    let(:file) { Tempfile.new("read_assets_file") }
+    let(:filepath) { file.path }
+    let(:attachable) { create(:news_article) }
+    let(:attachment_data) { create(:attachment_data, id: 123_456, attachable:) }
+    let(:replacement_data) { create(:attachment_data, attachable:) }
+    let(:replacement_data2) { create(:attachment_data, attachable:) }
+    let(:original_asset) { attachment_data.assets.original.first }
+    let(:thumbnail_asset) { attachment_data.assets.thumbnail.first }
+    let(:replacement_original_asset) { replacement_data.assets.original.first }
+    let(:replacement_thumbnail_asset) { replacement_data.assets.thumbnail.first }
+
+    teardown { task.reenable }
+
+    before do
+      csv_file = <<~CSV
+        123456
+      CSV
+      file.write(csv_file)
+      file.close
+
+      original_asset.asset_manager_id = "1592008029c8c3e4dc76256c"
+      original_asset.save!
+      thumbnail_asset.asset_manager_id = "1592008029c8c3e4dc76256d"
+      thumbnail_asset.save!
+      replacement_original_asset.asset_manager_id = "2592008029c8c3e4dc76256c"
+      replacement_original_asset.save!
+      replacement_thumbnail_asset.asset_manager_id = "2592008029c8c3e4dc76256d"
+      replacement_thumbnail_asset.save!
+
+      attachment_data.replaced_by = replacement_data
+      replacement_data.replaced_by = replacement_data2
+      attachment_data.save!
+      replacement_data.save!
+      replacement_data2.save!
+    end
+
+    test "it outputs AttachmentData ID and sends correct load" do
+      Services.asset_manager.stubs(:asset).with(original_asset.asset_manager_id).returns("id" => "http://asset-manager/assets/#{original_asset.asset_manager_id}", "name" => "original.pdf")
+      Services.asset_manager.stubs(:asset).with(thumbnail_asset.asset_manager_id).returns("id" => "http://asset-manager/assets/#{thumbnail_asset.asset_manager_id}", "name" => "thumbnail.pdf.png")
+
+      expected_output = <<~OUTPUT
+        OK - ad: #{attachment_data.id}
+      OUTPUT
+
+      Services.asset_manager.expects(:update_asset)
+              .at_least_once
+              .with(original_asset.asset_manager_id, { "replacement_id" => replacement_original_asset.asset_manager_id })
+
+      Services.asset_manager.expects(:update_asset)
+              .at_least_once
+              .with(thumbnail_asset.asset_manager_id, { "replacement_id" => replacement_thumbnail_asset.asset_manager_id })
+
+      output, _err = capture_io { task.invoke(filepath) }
+      assert_equal expected_output, output
+    end
+
+    test "it logs if no replacement is found" do
+      attachment_data.replaced_by_id = nil
+      attachment_data.save!
+
+      expected_output = <<~OUTPUT
+        ERROR - ad: #{attachment_data.id} does not have a replacement.
+      OUTPUT
+
+      output, _err = capture_io { task.invoke(filepath) }
+      assert_equal output, expected_output
+    end
+
+    test "it logs error if update fails" do
+      error = GdsApi::HTTPClientError.new(404, "Not found")
+      Services.asset_manager.expects(:asset).with(original_asset.asset_manager_id).raises(error)
+
+      expected_output = <<~OUTPUT
+        ERROR - ad: #{attachment_data.id}, message: Not found
+      OUTPUT
+
+      output, _err = capture_io { task.invoke(filepath) }
+      assert_equal expected_output, output
+    end
+  end
+end