Offer to run migrations only if not recently added

lib/ruby_lsp/ruby_lsp_rails/addon.rb

@@ -138,8 +138,12 @@ def workspace_did_change_watched_files(changes)
           @rails_runner_client.trigger_reload
         end
 
+        # It may be too agressive to ask a user to run a migration which has just been created.
+        # But we do want to offer it for situations such as switching branches or pulling from a remote.
+        # As a middle-ground, we only offer to run migrations if the # migration was created more than a minute ago.
         if changes.any? do |c|
-             %r{db/migrate/.*\.rb}.match?(c[:uri]) && c[:type] != Constant::FileChangeType::CHANGED
+             %r{db/migrate/.*\.rb}.match?(c[:uri]) &&
+                 c[:type] == Constant::FileChangeType::CREATED && !changed_in_last_minute?(c[:uri])
            end
 
           offer_to_run_pending_migrations
@@ -178,6 +182,12 @@ def handle_window_show_message_response(title)
 
       private
 
+      sig { params(uri: String).returns(T::Boolean) }
+      def changed_in_last_minute?(uri)
+        path = URI(uri).to_standardized_path
+        File.stat(path).mtime > (Time.now - 60)
+      end
+
       sig { params(id: String, title: String, percentage: T.nilable(Integer), message: T.nilable(String)).void }
       def begin_progress(id, title, percentage: nil, message: nil)
         return unless @global_state&.client_capabilities&.supports_progress && @outgoing_queue

test/ruby_lsp_rails/addon_test.rb

@@ -92,6 +92,64 @@ class AddonTest < ActiveSupport::TestCase
       ensure
         T.must(outgoing_queue).close
       end
+
+      test "offers to run migrations created more than 60 seconds ago" do
+        path = "#{dummy_root}/db/migrate/20210101000000_create_foos.rb"
+        begin
+          mtime = 1.minute.ago.to_time
+          FileUtils.touch(path, mtime: mtime)
+          changes = [
+            {
+              uri: "file://#{path}",
+              type: RubyLsp::Constant::FileChangeType::CREATED,
+            },
+          ]
+
+          addon = Addon.new
+          addon.expects(:offer_to_run_pending_migrations).once
+          addon.workspace_did_change_watched_files(changes)
+        ensure
+          FileUtils.rm(path)
+        end
+      end
+
+      test "does not offer to run migrations created less than 60 seconds ago" do
+        path = "#{dummy_root}/db/migrate/20210101000000_create_foos.rb"
+        begin
+          mtime = 30.seconds.ago.to_time
+          FileUtils.touch(path, mtime: mtime)
+          changes = [
+            {
+              uri: "file://#{path}",
+              type: RubyLsp::Constant::FileChangeType::CREATED,
+            },
+          ]
+
+          addon = Addon.new
+          addon.expects(:offer_to_run_pending_migrations).never
+          addon.workspace_did_change_watched_files(changes)
+        ensure
+          FileUtils.rm(path)
+        end
+      end
+
+      test "doesn't offers to run migrations if deleted" do
+        path = "#{dummy_root}/db/migrate/20210101000000_create_foos.rb"
+        changes = [
+          {
+            uri: "file://#{path}",
+            type: Constant::FileChangeType::DELETED,
+          },
+          {
+            uri: "file://#{path}",
+            type: RubyLsp::Constant::FileChangeType::CHANGED,
+          },
+        ]
+
+        addon = Addon.new
+        addon.expects(:offer_to_run_pending_migrations).never
+        addon.workspace_did_change_watched_files(changes)
+      end
     end
   end
 end