🔔 Reminder

Hello {{name}},

This is a friendly reminder about: {{title}}

\n {{#message}}

{{/message}}\n {{#dueDate}}

Due: {{dueDate}}

{{/dueDate}}\n

Best regards,
Your Notification System

\n `,\n text: `\n Reminder: {{title}}\n \n Hello {{name}},\n \n This is a friendly reminder about: {{title}}\n {{#message}}{{message}}{{/message}}\n {{#dueDate}}Due: {{dueDate}}{{/dueDate}}\n \n Best regards,\n Your Notification System\n `,\n variables: ['title', 'message', 'dueDate']\n },\n alert: {\n name: 'default_alert',\n type: 'alert',\n subject: '🚨 Alert: {{title}}',\n html: `\n

🚨 Alert

Hello {{name}},

{{title}}

\n {{#severity}}

Severity: {{severity}}

{{/severity}}\n {{#timestamp}}

Time: {{timestamp}}

{{/timestamp}}\n

Please take appropriate action if required.

\n `,\n text: `\n 🚨 ALERT: {{title}}\n \n Hello {{name}},\n \n {{message}}\n {{#severity}}Severity: {{severity}}{{/severity}}\n {{#timestamp}}Time: {{timestamp}}{{/timestamp}}\n \n Please take appropriate action if required.\n `,\n variables: ['title', 'message', 'severity', 'timestamp']\n },\n newsletter: {\n name: 'default_newsletter',\n type: 'newsletter',\n subject: '📧 {{title}}',\n html: `\n

\n {{#subtitle}}

{{/subtitle}}\n

Hello {{name}},

\n {{content}}\n

\n \n

\n `,\n text: `\n {{title}}\n {{#subtitle}}{{subtitle}}{{/subtitle}}\n \n Hello {{name}},\n \n {{content}}\n \n ---\n You're receiving this because you subscribed to our newsletter.\n Unsubscribe: {{unsubscribeUrl}}\n `,\n variables: ['title', 'subtitle', 'content', 'unsubscribeUrl']\n },\n transactional: {\n name: 'default_transactional',\n type: 'transactional',\n subject: '{{title}}',\n html: `\n

Hello {{name}},

\n {{content}}\n {{#actionUrl}}\n

\n {{actionText}}\n

\n {{/actionUrl}}\n

If you have any questions, please don't hesitate to contact us.

Best regards,
{{companyName}}

\n `,\n text: `\n {{title}}\n \n Hello {{name}},\n \n {{content}}\n \n {{#actionUrl}}{{actionText}}: {{actionUrl}}{{/actionUrl}}\n \n If you have any questions, please don't hesitate to contact us.\n \n Best regards,\n {{companyName}}\n `,\n variables: ['title', 'content', 'actionUrl', 'actionText', 'companyName']\n }\n };\n }\n\n /**\n * Initialize default templates if they don't exist\n */\n async initializeDefaultTemplates(): Promise {\n const defaults = this.getDefaultTemplates();\n \n for (const template of Object.values(defaults)) {\n try {\n const existing = await getTemplateByName(template.name);\n if (!existing) {\n await createTemplate(template);\n console.log(`Created default template: ${template.name}`);\n }\n } catch (error) {\n // Skip if template already exists (constraint error)\n if (error instanceof Error && error.message.includes('UNIQUE constraint failed')) {\n console.log(`Template ${template.name} already exists, skipping`);\n } else {\n console.error(`Failed to create template ${template.name}:`, error);\n }\n }\n }\n }\n\n /**\n * Preview template with sample data\n */\n previewTemplate(template: EmailTemplate, sampleData: Record = {}): {\n subject: string;\n html: string;\n text: string;\n } {\n const emailService = new EmailService();\n \n // Provide default sample data\n const defaultData = {\n name: 'John Doe',\n email: 'john@example.com',\n title: 'Sample Title',\n message: 'This is a sample message',\n content: 'This is sample content for the template preview.',\n ...sampleData\n };\n\n return {\n subject: emailService['processTemplate'](template.subject, defaultData),\n html: emailService['processTemplate'](template.html, defaultData),\n text: emailService['processTemplate'](template.text, defaultData)\n };\n }\n\n private isValidNotificationType(type: string): type is NotificationType {\n return ['reminder', 'alert', 'newsletter', 'transactional'].includes(type);\n }\n\n private hasMalformedVariables(content: string): boolean {\n // Check for unmatched braces or malformed variable syntax\n const openBraces = (content.match(/{/g) || []).length;\n const closeBraces = (content.match(/}/g) || []).length;\n \n if (openBraces !== closeBraces) {\n return true;\n }\n\n // Check for single braces (should be double)\n const singleBracePattern = /(?