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clinicpro/migrations/Version20260730174147.php
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hamedandClaude Opus 5 24534ec483 feat(availability): multi-resource availability engine
Section 10 of the design document, and the payoff for tasks 01–05. The engine slides
a multi-segment plan across resource calendars and answers which times are actually
possible, with a suggested resource for each role. Until now the only conflict the
system checked was the doctor's; rooms, devices and operators did not exist.

Allocation is per *role*, not per segment, and that is what returns the wasted
capacity. An operator with no requirement during "waiting for the cream" is simply
not examined for those minutes, so another patient can use them. The reference test
encodes exactly that: patient A holds 10:00–11:00 while the operator is only busy
10:00–10:05 and 10:35–11:00, and patient B is offered a slot inside the gap with the
second room assigned. The spec says the task is not verified without that scenario.

One resource is chosen for every segment that needs its role, not independently per
segment — otherwise the operator in segment 1 and segment 3 could be two different
people and the patient would change hands mid-treatment.

Occupancy is stored one row per (segment × resource) rather than one per appointment.
The granularity is the whole point; a row per appointment would re-create the
single-interval model the design rejects. Reserved intervals are widened by each
resource's setup/cleanup, because the resource genuinely is not available then.

booking_mode gains a third value, resource, alongside slot and service. It is purely
additive: the default stays slot, no environment moves on its own, and a location
that has not opted in keeps the untouched legacy path. The frozen slot-mode contract
stays green.

Performance is a test, not a hope: 30 days, 20 resources and 500 existing bookings
complete well inside the 500ms budget. Every input is read once and the rest is in
memory — no query inside the day or candidate loop — and candidates are generated
only from the free windows of the scarcest role, which turns tens of thousands of
candidates into a few hundred.

An empty result is not an error and not a 404: it carries
reason: "no_capacity_in_range" so the caller does not have to infer meaning from
emptiness.

Also fixed a genuinely intermittent test defect: NumericFieldNormalizerTest padded a
random number with the three-byte Persian "۰" using byte-based str_pad, producing
broken UTF-8 whenever the number was short. It failed roughly at random. The improved
assertion message added earlier is what identified it immediately.

1196 tests / 3414 assertions. phpstan at its 14-error baseline.

Resource-picking strategies, the availability cache and the settings UI are recorded
as outstanding in the checklist with reasons — the cache in particular would be
premature while the performance test passes comfortably without it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-30 21:21:33 +03:30

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<?php
declare(strict_types=1);
namespace DoctrineMigrations;
use Doctrine\DBAL\Schema\Schema;
use Doctrine\Migrations\AbstractMigration;
/**
* Resource occupancy: one row per (appointment segment × resource).
*
* The granularity is the point — an operator with no requirement during "waiting for
* the cream" has no row for those minutes and stays bookable for someone else. That
* is what returns the capacity the single-interval model wasted.
*/
final class Version20260730174147 extends AbstractMigration
{
public function getDescription(): string
{
return 'Add resource occupancy for multi-resource availability';
}
public function up(Schema $schema): void
{
$this->addSql('CREATE TABLE resource_occupancy (id INT AUTO_INCREMENT NOT NULL, uuid VARCHAR(36) NOT NULL, appointment_id INT DEFAULT NULL, starts_at INT NOT NULL, ends_at INT NOT NULL, status VARCHAR(10) DEFAULT \'booked\' NOT NULL, segment_name VARCHAR(150) DEFAULT NULL, created_at INT NOT NULL, entity_type VARCHAR(10) NOT NULL, entity_id INT NOT NULL, resource_id INT NOT NULL, UNIQUE INDEX UNIQ_2DC70369D17F50A6 (uuid), INDEX IDX_2DC7036989329D25 (resource_id), INDEX idx_occupancy_resource_range (resource_id, starts_at, ends_at), INDEX idx_occupancy_tenant (entity_type, entity_id), INDEX idx_occupancy_appointment (appointment_id), PRIMARY KEY (id)) DEFAULT CHARACTER SET utf8mb4');
$this->addSql('ALTER TABLE resource_occupancy ADD CONSTRAINT FK_2DC7036989329D25 FOREIGN KEY (resource_id) REFERENCES clinic_resources (id) ON DELETE CASCADE');
}
public function down(Schema $schema): void
{
$this->addSql('ALTER TABLE resource_occupancy DROP FOREIGN KEY FK_2DC7036989329D25');
$this->addSql('DROP TABLE resource_occupancy');
}
}