<?php
/** WordPress-free pending upload lifecycle and cleanup harness. */

declare(strict_types=1);

define('ABSPATH', __DIR__ . '/');
define('DAY_IN_SECONDS', 86400);
define('HOUR_IN_SECONDS', 3600);

final class WP_REST_Request {
	public function __construct(private array $params) {}
	public function get_param(string $key) { return $this->params[$key] ?? null; }
}
final class WP_REST_Response {
	public function __construct(public array $data, public int $status = 200) {}
}

function absint($value): int { return abs((int) $value); }
function __($text, $domain = '') { return $text; }
function get_current_user_id(): int { return $GLOBALS['current_user']; }
function is_user_logged_in(): bool { return get_current_user_id() > 0; }
function get_post(int $id) { return $GLOBALS['posts'][$id] ?? null; }
function get_post_meta(int $id, string $key, bool $single = false) { return $GLOBALS['meta'][$id][$key] ?? ''; }
function update_post_meta(int $id, string $key, $value): void { $GLOBALS['meta'][$id][$key] = $value; }
function delete_post_meta(int $id, string $key): void { unset($GLOBALS['meta'][$id][$key]); }
function wp_delete_attachment(int $id, bool $force) {
	$GLOBALS['deletions'][] = [$id, $force];
	if (!empty($GLOBALS['delete_failures'][$id])) return false;
	$post = get_post($id);
	unset($GLOBALS['posts'][$id], $GLOBALS['meta'][$id]);
	return $post;
}
function wp_get_upload_dir(): array { return ['baseurl' => 'https://example.test/wp-content/uploads']; }
function wp_parse_url(string $url, int $component = -1) { return parse_url($url, $component); }
function set_url_scheme(string $url): string { return preg_replace('#^https?:#', 'https:', $url); }
function attachment_url_to_postid(string $url): int { return $GLOBALS['attachment_urls'][$url] ?? 0; }
function add_action(string $hook, callable $callback, int $priority = 10, int $accepted = 1): void {
	$GLOBALS['hooks'][$hook] = [$callback, $accepted];
}
function register_rest_route(string $namespace, string $route, array $args): void {
	$GLOBALS['routes'][] = [$namespace, $route, $args];
}
function wp_next_scheduled(string $hook) { return $GLOBALS['scheduled'][$hook] ?? false; }
function wp_schedule_event(int $at, string $recurrence, string $hook): void {
	$GLOBALS['schedule_calls'][] = [$at, $recurrence, $hook];
	$GLOBALS['scheduled'][$hook] = $at;
}

final class PendingWpdb {
	public string $posts = 'wp_posts';
	public string $postmeta = 'wp_postmeta';
	public array $queries = [];
	public ?array $forced_ids = null;
	public $after_select = null;
	private array $params = [];

	public function prepare(string $sql, ...$params): string {
		$this->params = $params;
		$this->queries[] = ['sql' => $sql, 'params' => $params];
		return $sql;
	}
	public function get_col(string $sql): array {
		if ($this->forced_ids !== null) {
			$ids = $this->forced_ids;
		} else {
			[$key, $cutoff, $limit] = $this->params;
			$posts = $GLOBALS['posts'];
			ksort($posts);
			$ids = [];
			foreach ($posts as $id => $post) {
				$pending = get_post_meta($id, $key, true);
				if ($post->post_type !== 'attachment' || $pending === '' || (int) $pending >= $cutoff) continue;
				if (str_contains($sql, 'p.post_parent = 0') && $post->post_parent !== 0) continue;
				$ids[] = $id;
				if (count($ids) >= $limit) break;
			}
		}
		if (is_callable($this->after_select)) ($this->after_select)();
		return $ids;
	}
}

require dirname(__DIR__, 2) . '/src/Attachment/PendingUploads.php';
use Jio\Attachment\PendingUploads;

function reset_fixture(): void {
	$GLOBALS['posts'] = [];
	$GLOBALS['meta'] = [];
	$GLOBALS['attachment_urls'] = [];
	$GLOBALS['deletions'] = [];
	$GLOBALS['delete_failures'] = [];
	$GLOBALS['current_user'] = 7;
	$GLOBALS['wpdb'] = new PendingWpdb();
}
function attachment(int $id, int $owner = 7, int $parent = 0, ?int $pending = null): string {
	$GLOBALS['posts'][$id] = (object) ['ID' => $id, 'post_type' => 'attachment', 'post_author' => $owner, 'post_parent' => $parent];
	$url = 'https://example.test/wp-content/uploads/file-' . $id . '.jpg';
	$GLOBALS['attachment_urls'][$url] = $id;
	if ($pending !== null) update_post_meta($id, PendingUploads::META, $pending);
	return $url;
}
function pending_ids(): array {
	return array_values(array_filter(array_keys($GLOBALS['posts']), static fn(int $id): bool => get_post_meta($id, PendingUploads::META, true) !== ''));
}

$service = PendingUploads::get_instance();
$results = [];
reset_fixture();
$GLOBALS['hooks'] = [];
$GLOBALS['routes'] = [];
$GLOBALS['scheduled'] = [];
$GLOBALS['schedule_calls'] = [];
$service->init();
$service->maybe_schedule();
$service->maybe_schedule();
$service->register_routes();
$route = $GLOBALS['routes'][0];
$permission = $route[2]['permission_callback'];
$member_allowed = $permission();
$GLOBALS['current_user'] = 0;
$results['registration'] = [
	'hooks' => array_keys($GLOBALS['hooks']),
	'schedule_count' => count($GLOBALS['schedule_calls']),
	'recurrence' => $GLOBALS['schedule_calls'][0][1],
	'namespace' => $route[0], 'route' => $route[1], 'method' => $route[2]['methods'],
	'member_allowed' => $member_allowed, 'guest_allowed' => $permission(),
];

reset_fixture();
for ($id = 1; $id <= 25; $id++) attachment($id, 7, 0, time() - 2 * DAY_IN_SECONDS);
attachment(26, 8, 0, time() - 2 * DAY_IN_SECONDS);
attachment(27);
PendingUploads::mark(27);
$marked_at = get_post_meta(27, PendingUploads::META, true);
PendingUploads::mark(0);
PendingUploads::claim_ids(array_merge(range(1, 27), [1, 0]), 7);
$results['claim_ids'] = ['remaining' => pending_ids(), 'marked_recently' => abs(time() - $marked_at) <= 2, 'invalid_marked' => isset($GLOBALS['meta'][0])];

reset_fixture();
$urls = [];
for ($id = 1; $id <= 25; $id++) $urls[] = attachment($id, 7, 0, time() - 2 * DAY_IN_SECONDS);
PendingUploads::claim_urls($urls, 7);
$default_remaining = pending_ids();
PendingUploads::claim_urls($urls, 7, null);
$results['claim_urls'] = ['default_remaining' => $default_remaining, 'unlimited_remaining' => pending_ids()];

reset_fixture();
$urls = [];
for ($id = 1; $id <= 25; $id++) $urls[] = attachment($id, 7, 0, time() - 2 * DAY_IN_SECONDS);
$other = attachment(26, 8, 0, time() - 2 * DAY_IN_SECONDS);
$outside = 'https://cdn.other.test/file.jpg';
attachment(27, 7, 0, time() - 2 * DAY_IN_SECONDS);
$GLOBALS['attachment_urls'][$outside] = 27;
$text = implode(' ', array_map(static fn(string $url): string => '<img src="' . $url . '">', array_merge($urls, [$other, $outside])));
PendingUploads::claim_text($text, 7);
$text_default = pending_ids();
PendingUploads::claim_text($text, 7, null);
$results['claim_text'] = ['default_remaining' => $text_default, 'unlimited_remaining' => pending_ids()];

reset_fixture();
attachment(1, 7, 0, time());
attachment(2, 8, 0, time());
attachment(3);
attachment(4, 7, 99, time());
$denied = [PendingUploads::discard(2, 7), PendingUploads::discard(3, 7), PendingUploads::discard(4, 7), PendingUploads::discard(1, 0)];
$allowed = $service->rest_discard(new WP_REST_Request(['id' => 1]));
$repeat = $service->rest_discard(new WP_REST_Request(['id' => 1]));
$results['discard'] = ['denied' => $denied, 'success' => $allowed->data['success'], 'repeat_status' => $repeat->status, 'deleted' => $GLOBALS['deletions']];

reset_fixture();
$expired = time() - 2 * DAY_IN_SECONDS;
attachment(1, 7, 0, $expired);
attachment(2, 7, 0, time() - HOUR_IN_SECONDS);
attachment(3);
attachment(4, 7, 99, $expired);
$service->cleanup();
$results['cleanup'] = [
	'deleted' => $GLOBALS['deletions'], 'remaining' => array_keys($GLOBALS['posts']),
	'query' => $GLOBALS['wpdb']->queries[0],
];

reset_fixture();
for ($id = 1; $id <= 6; $id++) attachment($id, 7, 0, $expired);
$GLOBALS['posts'][6]->post_type = 'post';
$GLOBALS['wpdb']->forced_ids = range(1, 6);
$GLOBALS['wpdb']->after_select = static function (): void {
	PendingUploads::claim_ids([1], 7);
	$GLOBALS['posts'][2]->post_parent = 99;
	PendingUploads::mark(3);
	unset($GLOBALS['posts'][4]);
};
$service->cleanup();
$results['stale_selection'] = ['deleted' => $GLOBALS['deletions']];

reset_fixture();
for ($id = 1; $id <= 105; $id++) attachment($id, 7, 0, $expired);
$service->cleanup();
$first_batch = count($GLOBALS['deletions']);
$service->cleanup();
$results['batch'] = ['first' => $first_batch, 'total' => count($GLOBALS['deletions']), 'remaining' => count($GLOBALS['posts'])];

reset_fixture();
attachment(1, 7, 0, $expired);
$GLOBALS['delete_failures'][1] = true;
$service->cleanup();
$retained_after_failure = isset($GLOBALS['posts'][1]) && get_post_meta(1, PendingUploads::META, true) !== '';
$GLOBALS['delete_failures'][1] = false;
$service->cleanup();
$results['retry'] = ['retained' => $retained_after_failure, 'deleted_after_retry' => !isset($GLOBALS['posts'][1])];

echo json_encode($results, JSON_THROW_ON_ERROR);