We detected a login from {{ip_address}} at {{time}}.
If this wasn\'t you, please secure your account immediately.
' )->withMetadata(['content_type' => 'text/html']); // SMS: Keep it short and plain $smsTemplate = ChannelTemplate::create( bodyTemplate: 'SECURITY ALERT: Login from {{ip_address}} at {{time}}. If not you, secure account now.' ); $securityAlertTemplate = $securityAlertTemplate ->withChannelTemplate(NotificationChannel::TELEGRAM, $telegramTemplate) ->withChannelTemplate(NotificationChannel::EMAIL, $emailTemplate) ->withChannelTemplate(NotificationChannel::SMS, $smsTemplate); $registry->register($securityAlertTemplate); // Render for each channel $variables = [ 'ip_address' => '203.0.113.42', 'time' => '2024-12-19 15:30:00 UTC', ]; echo "TELEGRAM VERSION:\n"; $telegramContent = $renderer->renderForChannel( $securityAlertTemplate, NotificationChannel::TELEGRAM, $variables ); echo "Title: {$telegramContent->title}\n"; echo "Body:\n{$telegramContent->body}\n"; echo "Metadata: " . json_encode($telegramContent->metadata) . "\n\n"; echo "EMAIL VERSION:\n"; $emailContent = $renderer->renderForChannel( $securityAlertTemplate, NotificationChannel::EMAIL, $variables ); echo "Title: {$emailContent->title}\n"; echo "Body:\n{$emailContent->body}\n"; echo "Metadata: " . json_encode($emailContent->metadata) . "\n\n"; echo "SMS VERSION:\n"; $smsContent = $renderer->renderForChannel( $securityAlertTemplate, NotificationChannel::SMS, $variables ); echo "Body: {$smsContent->body}\n"; echo "\n"; // Example 4: Template with Default Variables echo "4. Default Variables - Newsletter Template\n"; echo str_repeat("-", 50) . "\n"; $newsletterTemplate = NotificationTemplate::create( name: 'newsletter.weekly', titleTemplate: '{{newsletter.title}} - Week {{week_number}}', bodyTemplate: 'Hi {{user.name}}, here\'s your weekly {{newsletter.title}}! This week\'s highlights: {{highlights}}. Read more: {{newsletter.url}}' )->withDefaultVariables([ 'newsletter' => [ 'title' => 'Weekly Update', 'url' => 'https://example.com/newsletter', ], 'highlights' => 'New features, bug fixes, and improvements', ])->withRequiredVariables('user.name', 'week_number'); $registry->register($newsletterTemplate); $notification = $renderer->render( template: $newsletterTemplate, recipientId: 'user_789', variables: [ 'user' => ['name' => 'Jane Smith'], 'week_number' => '51', // Using default values for newsletter and highlights ], channels: [NotificationChannel::EMAIL], type: new SystemNotificationType('newsletter.weekly') ); echo "Title: {$notification->title}\n"; echo "Body: {$notification->body}\n"; echo "\n"; // Example 5: Template Registry Usage echo "5. Template Registry - Lookup and Reuse\n"; echo str_repeat("-", 50) . "\n"; echo "Registered templates:\n"; foreach ($registry->all() as $name => $template) { echo " - {$name} (Priority: {$template->defaultPriority->value})\n"; } echo "\n"; // Reuse template from registry $template = $registry->get('order.shipped'); if ($template !== null) { echo "Retrieved template: {$template->name}\n"; echo "Required variables: " . implode(', ', $template->requiredVariables) . "\n"; } echo "\n"; // Example 6: Error Handling - Missing Required Variable echo "6. Error Handling - Validation\n"; echo str_repeat("-", 50) . "\n"; try { $renderer->render( template: $orderShippedTemplate, recipientId: 'user_999', variables: [ 'order_id' => '#67890', // Missing 'delivery_date' and 'tracking_url' ], channels: [NotificationChannel::EMAIL], type: new SystemNotificationType('order.shipped') ); } catch (\InvalidArgumentException $e) { echo "ā Validation Error: {$e->getMessage()}\n"; } echo "\n"; // Example 7: Complex Object in Variables echo "7. Complex Objects - Value Object Support\n"; echo str_repeat("-", 50) . "\n"; $paymentTemplate = NotificationTemplate::create( name: 'payment.received', titleTemplate: 'Payment Received', bodyTemplate: 'We received your payment of {{amount}} on {{date}}. Transaction ID: {{transaction.id}}' ); // Create notification with object variables $notification = $renderer->render( template: $paymentTemplate, recipientId: 'user_101', variables: [ 'amount' => '$99.00', 'date' => '2024-12-19', 'transaction' => [ 'id' => 'TXN_123456', 'status' => 'completed', ], ], channels: [NotificationChannel::EMAIL, NotificationChannel::TELEGRAM], type: new SystemNotificationType('payment.received') ); echo "Title: {$notification->title}\n"; echo "Body: {$notification->body}\n"; echo "\n"; // Example 8: Integration with NotificationDispatcher echo "8. Template + Dispatcher Integration\n"; echo str_repeat("-", 50) . "\n"; echo "Step 1: Create template\n"; $template = NotificationTemplate::create( name: 'account.deleted', titleTemplate: 'Account Deletion Confirmation', bodyTemplate: 'Your account {{username}} has been permanently deleted on {{deletion_date}}.' )->withPriority(NotificationPriority::URGENT); echo "Step 2: Render notification from template\n"; $notification = $renderer->render( template: $template, recipientId: 'user_202', variables: [ 'username' => 'johndoe', 'deletion_date' => '2024-12-19', ], channels: [NotificationChannel::EMAIL, NotificationChannel::SMS], type: new SystemNotificationType('account.deleted') ); echo "Step 3: Dispatch via NotificationDispatcher\n"; echo " (In real app: \$dispatcher->sendNow(\$notification, DispatchStrategy::ALL_OR_NONE))\n"; echo " Notification ready for dispatch:\n"; echo " - Title: {$notification->title}\n"; echo " - Channels: " . count($notification->channels) . "\n"; echo " - Priority: {$notification->priority->value}\n"; echo "\n"; // Summary echo "=== Template System Summary ===\n"; echo "ā Created " . count($registry->all()) . " templates\n"; echo "ā Demonstrated placeholder substitution ({{variable}})\n"; echo "ā Demonstrated nested variables ({{user.name}})\n"; echo "ā Demonstrated per-channel customization\n"; echo "ā Demonstrated default variables\n"; echo "ā Demonstrated validation and error handling\n"; echo "ā Template system ready for production use\n";