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<?php |
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/* allow-hardcoded-color: file-level exemption. Every literal in this file is required: HTML emitted here is delivered via wp_mail() and rendered by remote mail clients (Gmail, Outlook, Apple Mail) which do not load the admin stylesheet and strip external CSS, so theme vars (--abj404-*) cannot be used. */ |
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if (!defined('ABSPATH')) { |
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exit; |
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} |
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|
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/** |
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* Generates and sends rich digest email notifications for captured 404s. |
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* |
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* This class is responsible for: |
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* - Building an HTML email digest with a summary of captured 404 URLs. |
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* - Sending the digest via wp_mail(). |
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* - Managing the WP-Cron schedule for daily/weekly digests. |
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*/ |
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class ABJ_404_Solution_EmailDigest { |
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|
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/** @var ABJ_404_Solution_LogsRepository */ |
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private $logsRepo; |
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|
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/** @var ABJ_404_Solution_StatsRepositoryInterface */ |
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private $statsRepo; |
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|
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/** @var ABJ_404_Solution_Logging */ |
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private $logger; |
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|
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/** |
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* @param ABJ_404_Solution_LogsRepository|object $logsRepoOrLegacyDao Real LogsRepository, or a |
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* DataAccess facade that exposes getLogsRepo() (legacy + test path). When a DataAccess is |
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* supplied, this class resolves the real LogsRepository off the facade so it does not |
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* depend on pass-through LogsRepo methods existing on DataAccess. |
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* @param ABJ_404_Solution_Logging|ABJ_404_Solution_StatsRepositoryInterface|null $loggerOrStatsRepo |
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* StatsRepository when first arg is LogsRepository (modern signature); otherwise the |
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* Logging service (legacy signature where the DAO is also the stats repo via pass-through). |
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* @param ABJ_404_Solution_Logging|null $logger Logging service for the modern signature. |
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*/ |
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public function __construct($logsRepoOrLegacyDao, $loggerOrStatsRepo = null, $logger = null) { |
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if ($logsRepoOrLegacyDao instanceof ABJ_404_Solution_LogsRepository) { |
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$this->logsRepo = $logsRepoOrLegacyDao; |
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$this->statsRepo = $loggerOrStatsRepo instanceof ABJ_404_Solution_StatsRepositoryInterface |
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? $loggerOrStatsRepo |
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: $this->resolveStatsRepository(); |
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$this->logger = $logger !== null ? $logger : abj_service('logging'); |
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} else { |
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// Legacy / test path: caller handed in a DataAccess facade. Resolve the real |
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// LogsRepository off the facade; StatsRepository must be injected or registered. |
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$this->logsRepo = method_exists($logsRepoOrLegacyDao, 'getLogsRepo') |
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? $logsRepoOrLegacyDao->getLogsRepo() |
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: $logsRepoOrLegacyDao; |
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$this->statsRepo = $this->resolveStatsRepository(); |
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$this->logger = $loggerOrStatsRepo instanceof ABJ_404_Solution_Logging |
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? $loggerOrStatsRepo |
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: abj_service('logging'); |
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} |
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} |
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|
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/** |
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* @return ABJ_404_Solution_StatsRepositoryInterface |
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*/ |
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private function resolveStatsRepository(): ABJ_404_Solution_StatsRepositoryInterface { |
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$service = class_exists('ABJ_404_Solution_ServiceContainer') |
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? ABJ_404_Solution_ServiceContainer::safeGet('stats_repository') |
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: null; |
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if ($service instanceof ABJ_404_Solution_StatsRepositoryInterface) { |
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return $service; |
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} |
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|
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return ABJ_404_Solution_StatsRepositoryResolver::resolve(__CLASS__); |
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} |
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|
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/** |
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* Generate HTML email body for the digest. |
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* |
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* @param array<int, array<string, mixed>> $topCaptured Array of captured 404 rows from getTopCapturedForDigest(). |
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* @param array{total_captured: int, total_manual: int, total_auto: int} $stats From getDigestSummaryStats(). |
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* @param string $dateRange Human-readable date range label for the digest header. |
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* @param bool $rollupAvailable Whether the logs_hits rollup is currently |
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* available. When false and $topCaptured is empty, the empty-state |
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* cell renders an "unavailable, rebuild scheduled" message instead of |
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* "No captured 404s in this period" so the admin can distinguish the |
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* two cases. |
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* @return string HTML email body with inline CSS. |
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*/ |
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public function generateDigestHTML(array $topCaptured, array $stats, string $dateRange = '', bool $rollupAvailable = true): string { |
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if ($dateRange === '') { |
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$dateRange = date('Y-m-d', abj_clock()->now()); |
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} |
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|
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$adminUrl = function_exists('admin_url') |
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? admin_url('options-general.php?page=' . ABJ404_PP . '&subpage=abj404_captured') |
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: '#'; |
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$settingsUrl = function_exists('admin_url') |
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? admin_url('options-general.php?page=' . ABJ404_PP . '&subpage=abj404_options') |
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: '#'; |
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|
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$s = $this->computeDigestStats($stats); |
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$tableRows = $this->buildDigestTableRows($topCaptured, $rollupAvailable); |
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$t = $this->getDigestTranslations((int) $s['resolved'], (int) $s['totalAll']); |
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|
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// Load the digest email body template from disk and substitute |
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// computed values. The HTML/CSS lives in includes/html/emailDigestBody.html |
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// so that presentation can be edited independently of PHP. Email-client |
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// compatibility requires inline / embedded CSS, so styles intentionally |
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// live inside the template rather than an external stylesheet. |
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$template = ABJ_404_Solution_FileSystemService::readFileContents(dirname(__DIR__) . '/html/emailDigestBody.html', false); |
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|
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$replacements = array( |
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'{t_digest}' => $t['digest'], |
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'{t_report}' => $t['report'], |
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'{t_summary}' => $t['summary'], |
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'{t_captured}' => $t['captured'], |
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'{t_urls404}' => $t['urls404'], |
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'{t_auto}' => $t['auto'], |
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'{t_redirected}' => $t['redirected'], |
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'{t_manual}' => $t['manual'], |
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'{t_configured}' => $t['configured'], |
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'{t_resolution}' => $t['resolution'], |
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'{t_handled}' => $t['handled'], |
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'{t_top_urls}' => $t['top_urls'], |
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'{t_url}' => $t['url'], |
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'{t_hits}' => $t['hits'], |
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'{t_first_seen}' => $t['first_seen'], |
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'{t_view_cta}' => $t['view_cta'], |
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'{t_settings}' => $t['settings'], |
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'{t_unsubscribe}' => $t['unsubscribe'], |
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'{t_manage}' => $t['manage'], |
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'{dateRange}' => esc_html($dateRange), |
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'{totalCaptured}' => (string) $s['totalCaptured'], |
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'{totalAuto}' => (string) $s['totalAuto'], |
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'{totalManual}' => (string) $s['totalManual'], |
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'{resolutionPct}' => (string) $s['resolutionPct'], |
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'{progressBarFill}' => (string) $s['progressBarFill'], |
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'{progressBarEmpty}'=> (string) $s['progressBarEmpty'], |
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'{tableRows}' => $tableRows, |
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'{adminUrl}' => esc_url($adminUrl), |
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'{settingsUrl}' => esc_url($settingsUrl), |
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'{pluginVersion}' => esc_html((string) $s['pluginVersion']), |
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'{phpVersion}' => esc_html((string) $s['phpVersion']), |
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'{sentAt}' => esc_html((string) $s['sentAt']), |
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); |
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|
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return str_replace(array_keys($replacements), array_values($replacements), $template); |
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} |
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|
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/** |
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* @param array{total_captured: int, total_manual: int, total_auto: int} $stats |
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* @return array<string, int|string> |
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*/ |
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private function computeDigestStats(array $stats): array { |
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$totalCaptured = intval($stats['total_captured']); |
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$totalManual = intval($stats['total_manual']); |
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$totalAuto = intval($stats['total_auto']); |
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$totalAll = $totalCaptured + $totalAuto + $totalManual; |
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$resolved = $totalAuto + $totalManual; |
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$resolutionPct = $totalAll > 0 ? min(100, (int) round($resolved / $totalAll * 100)) : 0; |
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$remainderPct = 100 - $resolutionPct; |
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|
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$progressBarFill = $resolutionPct > 0 |
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? '<td width="' . $resolutionPct . '%" bgcolor="#2563eb" style="background:#2563eb;border-radius:3px;font-size:0;line-height:0;" height="6"> </td>' |
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: ''; |
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$progressBarEmpty = $remainderPct > 0 |
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? '<td width="' . $remainderPct . '%" style="font-size:0;line-height:0;" height="6"> </td>' |
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: ''; |
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|
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return [ |
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'totalCaptured' => $totalCaptured, 'totalManual' => $totalManual, |
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'totalAuto' => $totalAuto, 'totalAll' => $totalAll, 'resolved' => $resolved, |
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'resolutionPct' => $resolutionPct, 'progressBarFill' => $progressBarFill, |
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'progressBarEmpty' => $progressBarEmpty, |
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'pluginVersion' => defined('ABJ404_VERSION') ? ABJ404_VERSION : '', |
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'phpVersion' => PHP_VERSION, 'sentAt' => date('Y-m-d H:i T', abj_clock()->now()), |
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]; |
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} |
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|
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/** |
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* @param array<int, array<string, mixed>> $topCaptured |
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* @param bool $rollupAvailable |
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* @return string |
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*/ |
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private function buildDigestTableRows(array $topCaptured, bool $rollupAvailable): string { |
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if (empty($topCaptured)) { |
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$emptyMessage = $rollupAvailable |
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? esc_html__('No captured 404s in this period.', '404-solution') |
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: esc_html__('Top URLs unavailable: log rollup is being rebuilt. Will be available in the next digest.', '404-solution'); |
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$emptyTemplate = ABJ_404_Solution_FileSystemService::readFileContents(dirname(__DIR__) . '/html/emailDigestEmptyRow.html', false); |
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return str_replace('{emptyMessage}', $emptyMessage, $emptyTemplate); |
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} |
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|
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$rowTemplate = ABJ_404_Solution_FileSystemService::readFileContents(dirname(__DIR__) . '/html/emailDigestTableRow.html', false); |
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$tableRows = ''; |
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$rowIndex = 0; |
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foreach ($topCaptured as $row) { |
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$rowIndex++; |
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$rawUrl = isset($row['url']) && is_string($row['url']) ? $row['url'] : ''; |
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$urlText = esc_html($rawUrl); |
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$hits = isset($row['logshits']) ? intval(is_scalar($row['logshits']) ? $row['logshits'] : 0) : 0; |
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$created = isset($row['created']) ? date('Y-m-d', intval(is_scalar($row['created']) ? $row['created'] : 0)) : ''; |
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|
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$rowBg = ($rowIndex % 2 === 0) ? '#f8fafc' : '#ffffff'; |
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|
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if ($hits >= 100) { |
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$badgeBg = '#fee2e2'; $badgeFg = '#dc2626'; |
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} elseif ($hits >= 20) { |
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$badgeBg = '#fef3c7'; $badgeFg = '#d97706'; |
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} else { |
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$badgeBg = '#f1f5f9'; $badgeFg = '#475569'; |
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} |
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|
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$tableRows .= str_replace( |
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array('{rowBg}', '{urlText}', '{badgeBg}', '{badgeFg}', '{hits}', '{created}'), |
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array($rowBg, $urlText, $badgeBg, $badgeFg, (string) $hits, esc_html($created)), |
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$rowTemplate |
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); |
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} |
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return $tableRows; |
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} |
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|
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/** |
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* @param int $resolved |
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* @param int $totalAll |
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* @return array<string, string> |
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*/ |
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private function getDigestTranslations(int $resolved, int $totalAll): array { |
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return [ |
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'digest' => esc_html__('404 Solution Digest', '404-solution'), |
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'report' => esc_html__('Digest Report', '404-solution'), |
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'summary' => esc_html__('Summary', '404-solution'), |
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'captured' => esc_html__('Captured', '404-solution'), |
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'urls404' => esc_html__('404 URLs', '404-solution'), |
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'auto' => esc_html__('Auto', '404-solution'), |
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'redirected' => esc_html__('Redirected', '404-solution'), |
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'manual' => esc_html__('Manual', '404-solution'), |
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'configured' => esc_html__('Configured', '404-solution'), |
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'resolution' => esc_html__('Resolution Rate', '404-solution'), |
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'handled' => sprintf( |
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/* translators: 1: resolved count, 2: total count */ |
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esc_html__('%1$d of %2$d URLs handled', '404-solution'), |
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$resolved, |
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$totalAll |
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), |
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'top_urls' => esc_html__('Top Captured 404 URLs', '404-solution'), |
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'url' => esc_html__('URL', '404-solution'), |
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'hits' => esc_html__('Hits', '404-solution'), |
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'first_seen' => esc_html__('First Seen', '404-solution'), |
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'view_cta' => esc_html__('View Captured 404s', '404-solution'), |
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'settings' => esc_html__('Manage Settings', '404-solution'), |
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'unsubscribe' => esc_html__('To stop these emails, update your notification settings.', '404-solution'), |
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'manage' => esc_html__('Manage settings', '404-solution'), |
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]; |
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} |
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|
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/** |
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* Send the digest email. Returns a description of what happened. |
| 253 |
* |
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* @return string |
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*/ |
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public function sendDigest(): string { |
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$options = $this->getOptions(); |
| 258 |
$frequency = $this->readFrequencyOption($options); |
| 259 |
|
| 260 |
if ($frequency === 'instant' || $frequency === 'never') { |
| 261 |
return 'Digest skipped: frequency is ' . $frequency . '.'; |
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} |
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|
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// Centralized cadence gate: sendDigest() is reachable from more than |
| 265 |
// one trigger (the dedicated abj404_send_digest WP-Cron event, and |
| 266 |
// the plugin's daily maintenance cron via |
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// emailCaptured404Notification()). Without this check here, ANY |
| 268 |
// trigger firing more often than the configured frequency (e.g. the |
| 269 |
// daily maintenance cron running while frequency=weekly) sends a |
| 270 |
// digest every time it runs, regardless of what the admin selected. |
| 271 |
$cooldownSkip = $this->cooldownSkipMessage($frequency, $options); |
| 272 |
if ($cooldownSkip !== '') { |
| 273 |
return $cooldownSkip; |
| 274 |
} |
| 275 |
|
| 276 |
$to = isset($options['admin_notification_email']) && is_string($options['admin_notification_email']) |
| 277 |
? trim($options['admin_notification_email']) |
| 278 |
: ''; |
| 279 |
|
| 280 |
if ($to === '') { |
| 281 |
$adminEmail = function_exists('get_option') ? get_option('admin_email') : ''; |
| 282 |
$to = is_string($adminEmail) ? $adminEmail : ''; |
| 283 |
} |
| 284 |
|
| 285 |
if ($to === '') { |
| 286 |
return 'Digest skipped: no recipient email address configured.'; |
| 287 |
} |
| 288 |
|
| 289 |
$limit = isset($options['admin_notification_digest_limit']) && is_numeric($options['admin_notification_digest_limit']) |
| 290 |
? max(1, intval($options['admin_notification_digest_limit'])) |
| 291 |
: 10; |
| 292 |
|
| 293 |
// Pre-check rollup availability so the email distinguishes "rollup is |
| 294 |
// being rebuilt" from "no captured 404s." Without this, a missing |
| 295 |
// rollup silently produces an "No captured 404s in this period" cell |
| 296 |
// even when captured rows exist — misleading to the admin. |
| 297 |
$rollupAvailable = $this->logsRepo->logsHitsTableExists(); |
| 298 |
if (!$rollupAvailable) { |
| 299 |
// Schedule a rebuild now so the next digest run has data. |
| 300 |
$this->logsRepo->scheduleHitsTableRebuild(); |
| 301 |
$topCaptured = array(); |
| 302 |
} else { |
| 303 |
$topCaptured = $this->statsRepo->getTopCapturedForDigest($limit); |
| 304 |
} |
| 305 |
$stats = $this->statsRepo->getDigestSummaryStats(); |
| 306 |
|
| 307 |
// Skip the email entirely only when there is genuinely nothing to report |
| 308 |
// AND the rollup is healthy. If the rollup is unavailable but stats show |
| 309 |
// captured rows exist, ship the email with a "top URLs unavailable" note |
| 310 |
// so the admin learns about the rebuild rather than hearing silence. |
| 311 |
if ($rollupAvailable && intval($stats['total_captured']) === 0 && empty($topCaptured)) { |
| 312 |
return 'Digest skipped: no captured 404s to report.'; |
| 313 |
} |
| 314 |
|
| 315 |
$dateRange = date('Y-m-d', abj_clock()->now()); |
| 316 |
$body = $this->generateDigestHTML($topCaptured, $stats, $dateRange, $rollupAvailable); |
| 317 |
|
| 318 |
$subject = sprintf( |
| 319 |
/* translators: %s: current date */ |
| 320 |
__('404 Solution Digest — %s', '404-solution'), |
| 321 |
$dateRange |
| 322 |
); |
| 323 |
|
| 324 |
$adminEmail = function_exists('get_option') ? get_option('admin_email') : ''; |
| 325 |
$adminEmailStr = is_string($adminEmail) ? $adminEmail : ''; |
| 326 |
$headers = array( |
| 327 |
'Content-Type: text/html; charset=UTF-8', |
| 328 |
'From: ' . $adminEmailStr . ' <' . $adminEmailStr . '>', |
| 329 |
); |
| 330 |
|
| 331 |
$this->logger->debugMessage('Sending 404 digest email to: ' . $to); |
| 332 |
$sent = wp_mail($to, $subject, $body, $headers); |
| 333 |
|
| 334 |
if (!$sent) { |
| 335 |
// Do not stamp admin_notification_last_sent on a failed send: |
| 336 |
// that would suppress the cooldown gate's retry for up to a |
| 337 |
// week even though nothing actually went out. A hosting-level |
| 338 |
// mail failure is a warning (the plugin can still function), |
| 339 |
// not an error -- the next daily-maintenance-cron trigger |
| 340 |
// retries naturally since last_sent is unchanged. |
| 341 |
$this->logger->warn('404 digest email failed to send to: ' . $to . ' (wp_mail() reported failure).'); |
| 342 |
return 'Digest email failed to send to: ' . $to; |
| 343 |
} |
| 344 |
|
| 345 |
$this->logger->debugMessage('404 digest email sent.'); |
| 346 |
|
| 347 |
// Write through the options repository (into the bundled |
| 348 |
// abj404_settings option), NOT a bare update_option() call: this |
| 349 |
// must land in the SAME storage location cooldownSkipMessage() |
| 350 |
// reads via getOptions(), or the cooldown gate silently never |
| 351 |
// engages (the storage-mismatch half of WP.org support topic |
| 352 |
// weekly-digest-3 -- see EmailDigestCadenceRealStorageRoundTripTest). |
| 353 |
$lastSent = abj_clock()->now(); |
| 354 |
abj_service('options_repository')->setRawSettingValue('admin_notification_last_sent', $lastSent); |
| 355 |
|
| 356 |
// Compatibility-window dual-write: 4.3.1 (already shipped to |
| 357 |
// production) persisted this same value as a STANDALONE WP option |
| 358 |
// via a bare update_option('admin_notification_last_sent', ...) |
| 359 |
// call. External integrations (other plugins, monitoring scripts, |
| 360 |
// site-owner custom code) may read that released contract via |
| 361 |
// get_option('admin_notification_last_sent'). The options_repository |
| 362 |
// write above does not touch that standalone option -- it lands |
| 363 |
// inside abj404_settings instead -- so without this second write, |
| 364 |
// any such external reader would silently stop receiving updates |
| 365 |
// after upgrading to 4.3.2+ (design-audit category 110 Contract |
| 366 |
// Compatibility finding). Keep both writes: the repository write is |
| 367 |
// load-bearing for this class's own cooldown gate, and this one |
| 368 |
// preserves the public contract for everyone else. |
| 369 |
if (function_exists('update_option')) { |
| 370 |
update_option('admin_notification_last_sent', $lastSent); |
| 371 |
} |
| 372 |
|
| 373 |
return 'Digest email sent to: ' . $to; |
| 374 |
} |
| 375 |
|
| 376 |
/** |
| 377 |
* Schedule the next digest send based on the frequency option. |
| 378 |
* Reschedules or clears WP-Cron as needed. |
| 379 |
* |
| 380 |
* The dedicated `abj404_send_digest` WP-Cron event always runs at a |
| 381 |
* fixed `daily` recurrence, regardless of the configured |
| 382 |
* admin_notification_frequency (daily/weekly). WP-Cron only fires |
| 383 |
* opportunistically on page loads with no guaranteed exact timing, so |
| 384 |
* tying this event's OWN recurrence to the desired send interval means |
| 385 |
* a single missed `weekly`-recurrence firing silently doubles the wait |
| 386 |
* to two weeks. cooldownSkipMessage() (called from sendDigest(), the |
| 387 |
* actual send boundary) is the single source of truth for cadence, |
| 388 |
* keyed off `admin_notification_last_sent`. A daily trigger just needs |
| 389 |
* to check in often enough that a missed firing costs at most a day, |
| 390 |
* never a week -- the same pattern LoggingFeedbackDispatcher uses for |
| 391 |
* its weekly heartbeat (frequent trigger, elapsed-time gate). |
| 392 |
* |
| 393 |
* @param string|null $frequencyOverride When provided, used instead of |
| 394 |
* re-reading the option. Callers that just validated and are about |
| 395 |
* to persist a new frequency value (e.g. SettingsNotificationPolicy) |
| 396 |
* must pass it explicitly: the options repository write happens |
| 397 |
* later in the same request, so a re-fetch here would read the |
| 398 |
* stale pre-save value and could incorrectly clear/schedule against |
| 399 |
* the wrong instant-vs-not state. |
| 400 |
* @return void |
| 401 |
*/ |
| 402 |
public function scheduleNextDigest(?string $frequencyOverride = null): void { |
| 403 |
$frequency = $frequencyOverride !== null ? $frequencyOverride : $this->readFrequencyOption($this->getOptions()); |
| 404 |
|
| 405 |
$scheduler = abj_cron_scheduler(); |
| 406 |
$hook = ABJ_404_Solution_CronScheduler::HOOK_SEND_DIGEST; |
| 407 |
|
| 408 |
if ($frequency === 'instant' || $frequency === 'never') { |
| 409 |
$scheduler->clearHook($hook); |
| 410 |
return; |
| 411 |
} |
| 412 |
|
| 413 |
abj_cron_recurrence_migration()->ensureDailyRecurrence($hook); |
| 414 |
} |
| 415 |
|
| 416 |
/** @param array<string, mixed> $options */ |
| 417 |
private function readFrequencyOption(array $options): string { |
| 418 |
return isset($options['admin_notification_frequency']) && is_string($options['admin_notification_frequency']) |
| 419 |
? $options['admin_notification_frequency'] |
| 420 |
: 'instant'; |
| 421 |
} |
| 422 |
|
| 423 |
/** |
| 424 |
* Returns a non-empty skip message when the configured cadence has not |
| 425 |
* yet elapsed since the last successful send, or '' when sending is |
| 426 |
* allowed. `admin_notification_last_sent` (written at the bottom of |
| 427 |
* sendDigest()) is the single source of truth for cadence enforcement, |
| 428 |
* independent of which caller/cron triggered this method. |
| 429 |
* |
| 430 |
* @param array<string, mixed> $options |
| 431 |
*/ |
| 432 |
private function cooldownSkipMessage(string $frequency, array $options): string { |
| 433 |
$intervalSeconds = $frequency === 'weekly' |
| 434 |
? (defined('WEEK_IN_SECONDS') ? WEEK_IN_SECONDS : 604800) |
| 435 |
: (defined('DAY_IN_SECONDS') ? DAY_IN_SECONDS : 86400); |
| 436 |
|
| 437 |
$lastSentRaw = isset($options['admin_notification_last_sent']) && is_scalar($options['admin_notification_last_sent']) |
| 438 |
? $options['admin_notification_last_sent'] |
| 439 |
: 0; |
| 440 |
$lastSent = intval($lastSentRaw); |
| 441 |
if ($lastSent <= 0) { |
| 442 |
return ''; |
| 443 |
} |
| 444 |
|
| 445 |
$elapsed = abj_clock()->now() - $lastSent; |
| 446 |
if ($elapsed < $intervalSeconds) { |
| 447 |
return sprintf( |
| 448 |
'Digest skipped: last sent %d seconds ago; next %s digest eligible in %d seconds.', |
| 449 |
$elapsed, |
| 450 |
$frequency, |
| 451 |
$intervalSeconds - $elapsed |
| 452 |
); |
| 453 |
} |
| 454 |
|
| 455 |
return ''; |
| 456 |
} |
| 457 |
|
| 458 |
/** @return array<string, mixed> */ |
| 459 |
private function getOptions(): array { |
| 460 |
return abj_service('options_repository')->getOptions(true); |
| 461 |
} |
| 462 |
|
| 463 |
/** |
| 464 |
* Hook callback for the WP-Cron event 'abj404_send_digest'. |
| 465 |
* |
| 466 |
* @return void |
| 467 |
*/ |
| 468 |
public function onCronSendDigest(): void { |
| 469 |
$result = $this->sendDigest(); |
| 470 |
$this->logger->debugMessage('onCronSendDigest: ' . $result); |
| 471 |
} |
| 472 |
|
| 473 |
} |
| 474 |
|
