<?php
/**
 * Basic project smoke tests.
 *
 * @package RSS2CPT
 */

use PHPUnit\Framework\TestCase;

require_once dirname( __DIR__ ) . '/src/Scheduler.php';
require_once dirname( __DIR__ ) . '/src/Admin/Settings.php';

/**
 * Verifies project-level invariants without loading WordPress.
 */
final class SmokeTest extends TestCase {
	/**
	 * Verify the runtime supports the plugin baseline.
	 */
	public function test_supported_php_runtime(): void {
		$this->assertTrue( version_compare( PHP_VERSION, '7.4', '>=' ) );
	}

	/**
	 * Verify the persisted option name remains stable.
	 */
	public function test_option_key_is_stable(): void {
		$this->assertSame( 'rss2cpt_settings', RSS2CPT\Options::KEY );
	}

	/**
	 * Verify backfills use a safe bounded default.
	 */
	public function test_default_import_limit_is_bounded(): void {
		$settings = RSS2CPT\Options::get();
		$this->assertSame( 25, $settings['item_limit'] );
	}

	/**
	 * Verify ongoing imports do not inherit WordPress's long feed cache.
	 */
	public function test_importer_uses_short_feed_cache(): void {
		$importer = new RSS2CPT\Import\Importer();
		$this->assertSame( 300, $importer->filter_feed_cache_lifetime( 43200, 'https://example.test/feed.xml' ) );
	}

	/**
	 * Verify the imported post_date/post_date_gmt come from the feed timestamp
	 * on both create and update paths, with no timezone drift.
	 */
	public function test_postarr_uses_feed_timestamp_when_present(): void {
		$importer = new RSS2CPT\Import\Importer();

		$post_type = ( new \ReflectionClass( $importer ) )->getProperty( 'post_type' );
		$post_type->setAccessible( true );
		$post_type->setValue( $importer, 'podcast_episode' );

		$method = ( new \ReflectionClass( $importer ) )->getMethod( 'build_postarr' );
		$method->setAccessible( true );

		$timestamp    = 1700000000; // 2023-11-14T22:13:20Z, a known UTC moment.
		$data         = self::sample_item_data( $timestamp );
		$expected_gmt = gmdate( 'Y-m-d H:i:s', $timestamp );

		$postarr = $method->invoke(
			$importer,
			$data,
			'https://example.test/feed.xml',
			array(
				'post_status' => 'publish',
				'post_author' => 1,
			)
		);

		$this->assertSame( $expected_gmt, $postarr['post_date_gmt'] );
		$this->assertSame( get_date_from_gmt( $expected_gmt ), $postarr['post_date'] );
	}

	/**
	 * Verify that a feed item without a timestamp leaves post_date unset,
	 * letting WordPress default to the import time on insert/update.
	 */
	public function test_postarr_omits_post_date_when_feed_timestamp_missing(): void {
		$importer = new RSS2CPT\Import\Importer();

		$post_type = ( new \ReflectionClass( $importer ) )->getProperty( 'post_type' );
		$post_type->setAccessible( true );
		$post_type->setValue( $importer, 'podcast_episode' );

		$method = ( new \ReflectionClass( $importer ) )->getMethod( 'build_postarr' );
		$method->setAccessible( true );

		$postarr = $method->invoke(
			$importer,
			self::sample_item_data( 0 ),
			'https://example.test/feed.xml',
			array(
				'post_status' => 'publish',
				'post_author' => 1,
			)
		);

		$this->assertArrayNotHasKey( 'post_date', $postarr );
		$this->assertArrayNotHasKey( 'post_date_gmt', $postarr );
	}

	/**
	 * Build a complete sample item-data array.
	 *
	 * Both build_postarr() and the helper it calls, build_meta_input(), read
	 * every field that map_item() produces. Supplying the full set keeps the
	 * tests focused on the post_date behavior we are pinning down.
	 *
	 * @param int $timestamp Optional feed timestamp (zero means "no date").
	 * @return array<string,mixed>
	 */
	private static function sample_item_data( int $timestamp ): array {
		return array(
			'title'            => 'Episode',
			'content'          => 'Body',
			'excerpt'          => 'Teaser',
			'timestamp'        => $timestamp,
			'link'             => 'https://example.test/episode',
			'audio_url'        => 'https://example.test/episode.mp3',
			'audio_type'       => 'audio/mpeg',
			'audio_length'     => 0,
			'duration'         => '',
			'duration_seconds' => 0,
			'season'           => 0,
			'episode'          => 0,
			'episode_type'     => '',
			'explicit'         => '0',
			'source_id'        => 'src-1',
			'source_key'       => str_repeat( 'a', 64 ),
			'creator'          => '',
			'fingerprint'      => str_repeat( 'b', 64 ),
		);
	}

	/**
	 * Verify that clear_feed_cache deletes the SimplePie feed-cache option
	 * rows, the importer's per-feed lock, and the multisite site-transient
	 * variants derived from the configured feed URL.
	 */
	public function test_clear_feed_cache_removes_lock_and_simplepie_transient_keys(): void {
		rss2cpt_test_reset_delete_logs();

		$importer = new RSS2CPT\Import\Importer();
		$settings = new RSS2CPT\Admin\Settings( $importer, new RSS2CPT\Scheduler( $importer ) );
		$cleared  = $settings->clear_feed_cache( 'https://example.test/feed.xml', 'podcast_episode' );

		$this->assertTrue( $cleared );
		$this->assertContains( '_transient_feed_' . md5( 'https://example.test/feed.xml' ), $GLOBALS['rss2cpt_test_deleted_options'] );
		$this->assertContains( '_transient_timeout_feed_' . md5( 'https://example.test/feed.xml' ), $GLOBALS['rss2cpt_test_deleted_options'] );
		$this->assertContains( '_transient_feed_mod_' . md5( 'https://example.test/feed.xml' ), $GLOBALS['rss2cpt_test_deleted_options'] );
		$this->assertContains( '_transient_timeout_feed_mod_' . md5( 'https://example.test/feed.xml' ), $GLOBALS['rss2cpt_test_deleted_options'] );
		$this->assertContains( 'rss2cpt_lock_' . md5( 'https://example.test/feed.xml|podcast_episode' ), $GLOBALS['rss2cpt_test_deleted_options'] );
		$this->assertContains( 'feed_' . md5( 'https://example.test/feed.xml' ), $GLOBALS['rss2cpt_test_deleted_site_transients'] );
		$this->assertContains( 'feed_mod_' . md5( 'https://example.test/feed.xml' ), $GLOBALS['rss2cpt_test_deleted_site_transients'] );
	}

	/**
	 * Verify that clear_feed_cache refuses to do anything destructive when
	 * the feed URL is empty (so an unconfigured install cannot wipe someone
	 * else's transient rows by accident).
	 */
	public function test_clear_feed_cache_is_noop_when_feed_url_empty(): void {
		rss2cpt_test_reset_delete_logs();

		$importer = new RSS2CPT\Import\Importer();
		$settings = new RSS2CPT\Admin\Settings( $importer, new RSS2CPT\Scheduler( $importer ) );
		$cleared  = $settings->clear_feed_cache( '', 'podcast_episode' );

		$this->assertFalse( $cleared );
		$this->assertSame( array(), $GLOBALS['rss2cpt_test_deleted_options'] );
		$this->assertSame( array(), $GLOBALS['rss2cpt_test_deleted_site_transients'] );
	}
}