Koha-clms/api/v1/swagger
Martin Renvoize 53b59294f9
Bug 40134: Implement optimal item selection for 'any item' bookings
This patch implements an algorithm for selecting the item that would
leave the largest gap after the proposed booking to maximize the
opportunity for future bookings.

Key Changes:

Koha::Booking:
- Added set_itemtype_filter() method for transient itemtype parameter
- Added _select_optimal_item() method using single aggregated query
  * Groups bookings by item_id with MIN(start_date)
  * Selects items with no future bookings (optimal)
  * Among items with bookings, selects one with latest next booking
  * O(1) complexity - single database query with GROUP BY
- Updated _assign_item_for_booking() to use optimal selection
  * Filters by itemtype when itemtype_id is provided
  * Replaces previous random selection (RAND())

API Changes:
- Added itemtype_id parameter support to add() endpoint
- Added itemtype_id parameter support to update() endpoint
- Validates exactly one of item_id or itemtype_id is provided
- itemtype_id is transient - not persisted to database
- Extracted and applied via set_itemtype_filter() before store()

Architecture:
- itemtype_id is NOT a database column (transient only)
- Used as selection criterion, then discarded

Test plan:
1. Apply patch and restart services
2. Create "any item" booking via staff interface
3. Verify item with longest future availability is selected
4. Test via API with itemtype_id parameter
5. Verify itemtype_id is not persisted to database
6. Run t/db_dependent/Koha/Booking.t
7. Run t/db_dependent/api/v1/bookings.t

Signed-off-by: Kristi Krueger <kkrueger@cuyahogalibrary.org>
Signed-off-by: Paul Derscheid <paul.derscheid@lmscloud.de>
Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
(cherry picked from commit c7fa646929)
Signed-off-by: Chloé Zermatten <chloe.zermatten@openfifth.co.uk>
2026-03-23 11:44:01 +00:00
..
definitions Bug 40134: Implement optimal item selection for 'any item' bookings 2026-03-23 11:44:01 +00:00
parameters Bug 29002: Add bookings objects and API classes 2023-11-03 12:04:07 -03:00
paths Bug 29668: Add API route to add a basket 2026-02-16 14:45:29 +00:00
swagger.yaml Bug 37893: (QA follow-up): Fix xt/api.t 2025-11-18 11:21:19 -07:00