<?php
/**
 * Explicit, privacy-safe owner diagnostics export.
 *
 * @package CommentMate
 */

declare(strict_types=1);

namespace CommentMate;

defined('ABSPATH') || exit;

/**
 * Builds a small local-only diagnostic document. It intentionally excludes
 * review content, attachments, URLs, tokens, private paths, recipient
 * addresses, request identifiers, and WordPress user details. The document is
 * generated only after the owner requests a download; it is never transmitted
 * by CommentMate.
 */
final class Diagnostics_Service {
	/**
	 * @return array<string,mixed>
	 */
	public static function document(): array {
		$notifications = Notification_Service::settings();
		$build = Build::identity();
		$storage = (new Review_Service())->storage_status();

		return array(
			'schema'      => 'commentmate-diagnostics/v1',
			'generatedAt' => gmdate('c'),
			'plugin'      => array(
				'name'             => 'CommentMate',
				'stableIdentifier' => defined('COMMENTMATE_BASENAME') ? COMMENTMATE_BASENAME : 'commentmate/commentmate.php',
				'version'          => COMMENTMATE_VERSION,
				'build'            => array(
					'sourceSha'     => (string) ($build['source_sha'] ?? 'unknown'),
					'payloadDigest' => (string) ($build['payload_digest'] ?? 'unknown'),
					'builtAt'       => (string) ($build['built_at'] ?? 'unknown'),
				),
			),
			'environment' => array(
				'wordpressVersion' => function_exists('get_bloginfo') ? (string) get_bloginfo('version') : 'unknown',
				'phpVersion'       => PHP_VERSION,
				'multisite'        => function_exists('is_multisite') && is_multisite(),
				'environmentType'  => function_exists('wp_get_environment_type') ? (string) wp_get_environment_type() : 'unknown',
			),
			'notifications' => array(
				'enabled'         => !empty($notifications['enabled']),
				'dailySummary'    => !empty($notifications['daily_summary']),
				'immediateAlerts' => !empty($notifications['immediate_alerts']),
				'detailLevel'     => (string) ($notifications['detail_level'] ?? 'activity'),
				'recipientCount'  => count((array) ($notifications['recipients'] ?? array())),
			),
			'storage'       => array(
				'usedBytes'      => (int) ($storage['usedBytes'] ?? 0),
				'limitBytes'     => (int) ($storage['limitBytes'] ?? 0),
				'acceptingFiles' => !empty($storage['acceptingFiles']),
				'warning'        => (string) ($storage['warning'] ?? 'unknown'),
			),
			'compatibility' => Compatibility_Service::summary(),
		);
	}
}