<?php
declare(strict_types=1);

use PHPUnit\Framework\TestCase;

/**
 * Entity group name collisions.
 *
 * Two providers registering the same entity/group name used to have the
 * second definition dropped with no trace. Identical re-registration (core
 * re-fires the registration hooks on init:1) stays silent; a different
 * definition is recorded with a field diff and surfaced in Site Health.
 */
class EntityRegistryCollisionTest extends TestCase {

	protected function setUp(): void {
		if ( ! class_exists( 'TMDO_Site_Health' ) ) {
			require_once TMDO_PATH . 'includes/diagnostic/class-tmdo-site-health.php';
		}
		TMDO_Entity_Registry::init();
		TMDO_Entity_Registry::register_adapter( 'post', $this->createMock( TMDO_Entity_Adapter_Interface::class ) );
		$GLOBALS['_wp_options'] = array();
	}

	private function first_definition(): array {
		return array(
			array( 'key' => 'hp_price', 'type' => 'decimal', 'searchable' => true ),
			array( 'key' => 'hp_featured', 'type' => 'boolean' ),
		);
	}

	public function test_identical_reregistration_is_silent(): void {
		$this->assertTrue( TMDO_Entity_Registry::register_group( 'post', 'hp_listing_core', $this->first_definition() ) );
		$this->assertFalse( TMDO_Entity_Registry::register_group( 'post', 'hp_listing_core', $this->first_definition() ) );

		$this->assertSame( array(), TMDO_Entity_Registry::get_collisions() );
	}

	public function test_different_definition_is_recorded_with_field_diff(): void {
		TMDO_Entity_Registry::register_group( 'post', 'hp_listing_core', $this->first_definition() );

		$second = array(
			array( 'key' => 'hp_price', 'type' => 'integer', 'searchable' => true ),
			array( 'key' => 'hp_vendor', 'type' => 'integer' ),
		);
		$this->assertFalse( TMDO_Entity_Registry::register_group( 'post', 'hp_listing_core', $second ) );

		$collisions = TMDO_Entity_Registry::get_collisions();
		$this->assertCount( 1, $collisions );
		$this->assertSame( 'post', $collisions[0]['entity_type'] );
		$this->assertSame( 'hp_listing_core', $collisions[0]['group'] );
		$this->assertSame( array( 'hp_vendor' ), $collisions[0]['added'] );
		$this->assertSame( array( 'hp_featured' ), $collisions[0]['removed'] );
		$this->assertSame( array( 'hp_price' ), $collisions[0]['changed'] );
	}

	public function test_first_definition_wins(): void {
		TMDO_Entity_Registry::register_group( 'post', 'hp_listing_core', $this->first_definition() );
		TMDO_Entity_Registry::register_group( 'post', 'hp_listing_core', array( array( 'key' => 'hp_vendor', 'type' => 'integer' ) ) );

		$this->assertSame( array( 'hp_price', 'hp_featured' ), TMDO_Entity_Registry::get_group_keys( 'post', 'hp_listing_core' ) );
		$this->assertNull( TMDO_Entity_Registry::get_field( 'post', 'hp_vendor' ) );
	}

	public function test_same_collision_is_recorded_once_per_request(): void {
		TMDO_Entity_Registry::register_group( 'post', 'g', $this->first_definition() );
		$other = array( array( 'key' => 'x', 'type' => 'text' ) );
		TMDO_Entity_Registry::register_group( 'post', 'g', $other );
		TMDO_Entity_Registry::register_group( 'post', 'g', $other );

		$this->assertCount( 1, TMDO_Entity_Registry::get_collisions() );
	}

	public function test_init_clears_collisions(): void {
		TMDO_Entity_Registry::register_group( 'post', 'g', $this->first_definition() );
		TMDO_Entity_Registry::register_group( 'post', 'g', array( array( 'key' => 'x', 'type' => 'text' ) ) );
		TMDO_Entity_Registry::init();

		$this->assertSame( array(), TMDO_Entity_Registry::get_collisions() );
	}

	public function test_site_health_reports_collisions(): void {
		$this->assertSame( 'good', TMDO_Site_Health::check_entity_group_collisions()['status'] );

		TMDO_Entity_Registry::register_group( 'post', 'hp_listing_core', $this->first_definition() );
		TMDO_Entity_Registry::register_group( 'post', 'hp_listing_core', array( array( 'key' => 'x', 'type' => 'text' ) ) );

		$result = TMDO_Site_Health::check_entity_group_collisions();
		$this->assertSame( 'recommended', $result['status'] );
		$this->assertStringContainsString( 'post/hp_listing_core', $result['description'] );
	}

	public function test_site_health_registers_the_collision_test(): void {
		$tests = TMDO_Site_Health::register_tests( array() );
		$this->assertArrayHasKey( 'wpdo_entity_group_collisions', $tests['direct'] );
	}
}