<?php
declare(strict_types=1);

use PHPUnit\Framework\TestCase;

/**
 * Hook Bus routes post meta to the group of the post's own type.
 *
 * Two groups share `shared_key`; the listing group is scoped to hp_listing,
 * the vendor group to hp_vendor. Before scoping, both posts' values landed
 * in the vendor table (last registered wins).
 */
class PostScopedRoutingTest extends TestCase {

	private const LISTING_TABLE = 'wp_itest_wpdo_post_scope_listing';
	private const VENDOR_TABLE  = 'wp_itest_wpdo_post_scope_vendor';

	public static function setUpBeforeClass(): void {
		global $wpdb;
		$base = WPDO_PLUGIN_DIR;
		foreach ( array(
			'includes/adapters/interface-entity-adapter.php',
			'includes/engine/class-tmdo-type-caster.php',
			'includes/engine/class-tmdo-schema-manager.php',
			'includes/engine/class-tmdo-entity-registry.php',
			'includes/engine/class-tmdo-mode-manager.php',
			'includes/engine/class-tmdo-cache-orchestrator.php',
			'includes/adapters/class-tmdo-adapter-post.php',
			'includes/engine/class-tmdo-hook-bus.php',
		) as $file ) {
			require_once $base . $file;
		}
		foreach ( array( self::LISTING_TABLE, self::VENDOR_TABLE ) as $table ) {
			$wpdb->query( "DROP TABLE IF EXISTS `{$table}`" );
			$wpdb->query(
				"CREATE TABLE `{$table}` (
					`id` BIGINT(20) NOT NULL AUTO_INCREMENT,
					`post_id` BIGINT(20) NOT NULL,
					`shared_key` VARCHAR(255) DEFAULT NULL,
					`created_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
					`updated_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
					PRIMARY KEY (`id`),
					UNIQUE KEY `uk_entity` (`post_id`)
				) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4"
			);
		}
	}

	public static function tearDownAfterClass(): void {
		global $wpdb;
		foreach ( array( self::LISTING_TABLE, self::VENDOR_TABLE ) as $table ) {
			$wpdb->query( "DROP TABLE IF EXISTS `{$table}`" );
		}
		WPDO_Entity_Registry::init();
		$ref = new ReflectionProperty( WPDO_Mode_Manager::class, 'cache' );
		$ref->setAccessible( true );
		$ref->setValue( null, null );
	}

	protected function setUp(): void {
		global $wpdb;
		foreach ( array( self::LISTING_TABLE, self::VENDOR_TABLE ) as $table ) {
			$wpdb->query( "TRUNCATE TABLE `{$table}`" );
		}
		$GLOBALS['_wp_options']        = array( WPDO_Entity_Registry::SCOPED_ROUTING_OPTION => '1' );
		$GLOBALS['_wp_cache']          = array();
		$GLOBALS['_wp_post_types']     = array( 101 => 'hp_listing', 202 => 'hp_vendor', 303 => 'post' );
		$GLOBALS['_wp_current_filter'] = 'update_post_metadata';

		$tec = new ReflectionProperty( WPDO_Schema_Manager::class, 'table_exists_cache' );
		$tec->setAccessible( true );
		$tec->setValue( null, array( self::LISTING_TABLE => true, self::VENDOR_TABLE => true ) );
		$l1 = new ReflectionProperty( WPDO_Cache_Orchestrator::class, 'l1_cache' );
		$l1->setAccessible( true );
		$l1->setValue( null, array() );
		$mode = new ReflectionProperty( WPDO_Mode_Manager::class, 'cache' );
		$mode->setAccessible( true );
		$mode->setValue( null, array( 'post' => 'aeav_only', 'user' => 'disabled', 'term' => 'disabled', 'comment' => 'disabled' ) );

		WPDO_Entity_Registry::init();
		WPDO_Entity_Registry::register_adapter( 'post', new WPDO_Adapter_Post() );
		WPDO_Entity_Registry::register_group( 'post', 'scope_listing', array( array( 'key' => 'shared_key', 'type' => 'text' ) ), array( 'post_types' => array( 'hp_listing' ) ) );
		WPDO_Entity_Registry::register_group( 'post', 'scope_vendor', array( array( 'key' => 'shared_key', 'type' => 'text' ) ), array( 'post_types' => array( 'hp_vendor' ) ) );
	}

	private function value_in( string $table, int $post_id ): ?string {
		global $wpdb;
		return $wpdb->get_var( $wpdb->prepare( "SELECT shared_key FROM `{$table}` WHERE post_id = %d", $post_id ) );
	}

	public function test_each_post_type_writes_to_its_own_group_table(): void {
		WPDO_Hook_Bus::intercept_update( null, 101, 'shared_key', 'listing value', '' );
		WPDO_Hook_Bus::intercept_update( null, 202, 'shared_key', 'vendor value', '' );

		$this->assertSame( 'listing value', $this->value_in( self::LISTING_TABLE, 101 ) );
		$this->assertNull( $this->value_in( self::VENDOR_TABLE, 101 ) );
		$this->assertSame( 'vendor value', $this->value_in( self::VENDOR_TABLE, 202 ) );
	}

	public function test_reads_come_from_the_post_types_group_table(): void {
		global $wpdb;
		$wpdb->insert( self::LISTING_TABLE, array( 'post_id' => 101, 'shared_key' => 'from listing table' ) );
		$wpdb->insert( self::VENDOR_TABLE, array( 'post_id' => 101, 'shared_key' => 'stray copy' ) );

		$this->assertSame( array( 'from listing table' ), WPDO_Hook_Bus::intercept_get( null, 101, 'shared_key', true, 'post' ) );
	}

	public function test_other_post_types_fall_through_to_native_meta(): void {
		$this->assertNull( WPDO_Hook_Bus::intercept_update( null, 303, 'shared_key', 'x', '' ) );
		$this->assertNull( WPDO_Hook_Bus::intercept_get( null, 303, 'shared_key', true, 'post' ) );
	}

	public function test_without_the_option_routing_stays_legacy(): void {
		$GLOBALS['_wp_options'][ WPDO_Entity_Registry::SCOPED_ROUTING_OPTION ] = '0';

		WPDO_Hook_Bus::intercept_update( null, 101, 'shared_key', 'legacy', '' );

		$this->assertSame( 'legacy', $this->value_in( self::VENDOR_TABLE, 101 ) );
		$this->assertNull( $this->value_in( self::LISTING_TABLE, 101 ) );
	}
}