feat(marketplace): duplicate listings into current course

[LWS49]

• add DuplicationJob: copies listings into a course tab, writes adoption
• add bulk duplicate endpoint enqueuing the job for selected listings
• add DuplicateConfirmation modal with row + bulk triggers, job polling
• add MarketplaceAPI.duplicate and duplicateListings poll operation
• serialize and assert live distinct-course adoption count in index

[adi-herwana-nus]

Let's also add tests confirming the following logic:

• once duplication of a marketplace-listed-assessment is done, the listing itself does not get duplicated (so the total number of listings should not change as adoptions take place)

• if marketplace-listed-assessment is duplicated manually (e.g. as part of full / partial course duplication), it should follow the same logic steps (listing should not duplicate, adoption should be tracked)

[Copilot]

Pull request overview

Adds end-to-end “duplicate from marketplace into the current course” functionality: a backend job + endpoint to duplicate selected marketplace listings into a destination course/tab while recording marketplace adoptions, and a frontend confirmation modal that triggers duplication and polls job completion.

Changes:

• Introduces Course::Assessment::Marketplace::DuplicationJob and a POST #duplicate endpoint to enqueue duplication for selected published listings.
• Records marketplace adoptions during object/course duplication flows and reports distinct-course adoption counts in marketplace listing index responses.
• Adds a frontend confirmation modal + row-level trigger, API method, and operation to start duplication and poll job status.

Reviewed changes

Copilot reviewed 18 out of 18 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
spec/jobs/course/assessment/marketplace/duplication_job_spec.rb	Adds job specs covering duplication behavior, tab placement, and adoption recording.
spec/controllers/course/assessment/marketplace/listings_controller_spec.rb	Adds controller specs for live adoption counts and duplicate endpoint enqueue/authorization.
lib/autoload/duplicator.rb	Documents and exposes duplicated_objects for duplication bookkeeping.
client/locales/zh.json	Adds i18n strings for duplication confirmation and status toasts.
client/locales/ko.json	Adds i18n strings for duplication confirmation and status toasts.
client/locales/en.json	Adds i18n strings for duplication confirmation and status toasts.
client/app/bundles/course/marketplace/translations.ts	Registers new duplication-related message IDs/default messages.
client/app/bundles/course/marketplace/pages/MarketplaceIndex/MarketplaceTable.tsx	Adds a row-level Duplicate button to open the confirmation flow.
client/app/bundles/course/marketplace/pages/MarketplaceIndex/index.tsx	Wires the duplicate confirmation modal and reads from_tab from URL params.
client/app/bundles/course/marketplace/operations.ts	Adds duplicateListings operation (enqueue + job polling).
client/app/bundles/course/marketplace/components/DuplicateConfirmation.tsx	Adds confirmation modal that submits duplication and shows toast feedback.
client/app/bundles/course/marketplace/components/test/DuplicationConfirmation.test.tsx	Adds frontend test coverage for posting duplication request payload.
client/app/api/course/Marketplace.ts	Adds MarketplaceAPI.duplicate POST method.
app/services/course/duplication/object_duplication_service.rb	Records marketplace adoptions after object duplication completes.
app/services/course/duplication/course_duplication_service.rb	Records marketplace adoptions after course duplication completes.
app/services/course/duplication/base_service.rb	Implements record_marketplace_adoptions based on duplicator.duplicated_objects.
app/jobs/course/assessment/marketplace/duplication_job.rb	Implements duplication job and redirect behavior after duplication.
app/controllers/course/assessment/marketplace/listings_controller.rb	Adds duplicate action with authorization and job submission.

Comments suppressed due to low confidence (1)

client/app/bundles/course/marketplace/components/DuplicateConfirmation.tsx:52

• duplicateTitle is a pluralized message that references {n}, but it is formatted without providing n, which can cause runtime formatting errors / fallback output.

      open={open}
      primaryLabel={t(translations.duplicateConfirm)}
      title={t(translations.duplicateTitle)}
    >

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.