update segment service methods for typeorm 1.0 cascading behavior

[bcb37]

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[Copilot]

Pull request overview

Updates SegmentService to work around TypeORM 1.0+ cascade behavior changes by avoiding save() with loaded relations and instead managing subSegments relationships via the QueryBuilder relation API.

Changes:

• Updated list creation to link parent/child segments using relation('subSegments')...add(...) rather than persisting loaded relations.
• Updated segment upsert pipeline to (a) clear old subSegments relationships explicitly and (b) re-attach new subSegments via the relation API rather than cascading via save().
• Updated unit tests to reflect the new repository find() existence-check flow and relation-based linking.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

File	Description
packages/backend/src/api/services/SegmentService.ts	Refactors segment/list upsert and relationship management to avoid cascade side effects by using TypeORM relation APIs.
packages/backend/test/unit/services/SegmentService.test.ts	Adjusts mocks and expectations for the new find() + relation-API based behavior.

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

Comments suppressed due to low confidence (5)

packages/backend/test/unit/services/SegmentService.test.ts:1082

• This test verifies repo.save omits subSegments, but it doesn't verify the new QueryBuilder relation update path (.relation(...).add(...)) ran. Asserting .add(...) was called makes the test cover the behavior change this PR introduces.

      // Verify that repo.save was called WITHOUT subSegments (relations are added via QueryBuilder)
      expect(repo.save).toHaveBeenCalledWith({

packages/backend/test/unit/services/SegmentService.test.ts:1119

• This test verifies repo.save omits subSegments, but doesn't assert that the relation is applied via QueryBuilder (.add(...)). Adding an assertion here helps ensure missing subsegment IDs are skipped and valid ones still get linked.

      // Verify repo.save was called WITHOUT subSegments (relations are added via QueryBuilder)
      expect(repo.save).toHaveBeenCalledWith({

packages/backend/src/api/services/SegmentService.ts:469

• In deleteList, the current guard throws List ... not found even when the parent segment itself is missing. This makes the error misleading and harder to debug.

    const parentSegment = await this.getSegmentById(parentSegmentId, logger);
    if (!parentSegment || !parentSegment.subSegments.some((subSegment) => subSegment.id === segmentId)) {
      throw new Error(`List ${segmentId} not found in parent segment ${parentSegmentId}`);
    }

packages/backend/src/api/services/SegmentService.ts:1006

• The comment says missing subsegment references are skipped “silently”, but the code logs a warning for each missing ID. Update the comment so it matches the actual behavior.

          // Skip unknown subsegment references silently — validation already warned about these
          logger.warn({ message: `SubSegment: ${subSegmentId} not found, skipping reference.` });

packages/backend/test/unit/services/SegmentService.test.ts:1043

• These updated tests only assert that repo.save is called without subSegments, but they don't assert that the relationship is actually set via the QueryBuilder. Adding an assertion that .add(...) was called will prevent regressions where relations stop being created.

This issue also appears in the following locations of the same file:

• line 1081
• line 1118

      // Verify repo.save was called WITHOUT subSegments (relations are added via QueryBuilder)
      expect(repo.save).toHaveBeenCalledWith({