<?php
declare(strict_types=1);

use PHPUnit\Framework\TestCase;

/**
 * Backfill batches are scheduled per (entity, group) — REST backfill and
 * TMDO_Core re-chain `wpdo_entity_backfill_batch` with both args. The health
 * panel looked for (entity) alone, never found a running backfill and kept
 * offering to start one; starting one resets the group's checkpoint
 * (2.4.2 PR-137, manual F-11).
 */
class EntityHealthBackfillTest extends TestCase {

	protected function setUp(): void {
		$GLOBALS['_wp_next_scheduled'] = array();
		TMDO_Entity_Registry::init();
		TMDO_Entity_Registry::register_adapter( 'user', new TMDO_Adapter_User() );
		TMDO_Entity_Registry::register_group( 'user', 'eh_one', array( array( 'key' => 'eh_a', 'type' => 'text' ) ) );
		TMDO_Entity_Registry::register_group( 'user', 'eh_two', array( array( 'key' => 'eh_b', 'type' => 'text' ) ) );
	}

	protected function tearDown(): void {
		$GLOBALS['_wp_next_scheduled'] = array();
		TMDO_Entity_Registry::init();
	}

	private function backfill_active( string $entity_type ): bool {
		$m = new ReflectionMethod( TMDO_Entity_Health::class, 'is_backfill_active' );
		$m->setAccessible( true );
		return (bool) $m->invoke( null, $entity_type );
	}

	public function test_a_backfill_scheduled_for_one_group_is_seen(): void {
		$GLOBALS['_wp_next_scheduled']['wpdo_entity_backfill_batch'][ md5( serialize( array( 'user', 'eh_two' ) ) ) ] = time() + 5;

		$this->assertTrue( $this->backfill_active( 'user' ) );
		$this->assertFalse( $this->backfill_active( 'post' ), 'other entities are not affected' );
	}

	public function test_no_scheduled_batch_means_no_backfill(): void {
		$this->assertFalse( $this->backfill_active( 'user' ) );
	}
}