/** * Report Email Delivery System * Automatically send scheduled reports via email using Brevo */ import { invokeLLM } from './server/_core/llm'; export interface EmailTemplate { name: string; subject: string; htmlTemplate: string; textTemplate: string; } export interface ReportEmailJob { id: string; reportId: string; recipients: string[]; reportContent: any; format: 'html' | 'pdf' | 'csv' | 'json'; status: 'pending' | 'sending' | 'sent' | 'failed'; sentAt?: Date; failureReason?: string; retryCount: number; maxRetries: number; } /** * Payment Report Email Template */ export const paymentReportTemplate: EmailTemplate = { name: 'payment_report', subject: 'CoinKrazy Payment Report - {{date}}', htmlTemplate: `

Summary Metrics

Total Revenue

Total Transactions

Success Rate

{{successRate}}%

Average Transaction

Payment Methods

Method	Count	Amount	Percentage

Daily Breakdown

Date	Revenue	Transactions	Success Rate

`, textTemplate: ` COINKRAZY PAYMENT REPORT Generated: {{generatedAt}} Period: {{timeRange}} SUMMARY METRICS Total Revenue: {{totalRevenue}} Total Transactions: {{totalTransactions}} Success Rate: {{successRate}}% Average Transaction: {{averageTransaction}} PAYMENT METHODS {{paymentMethodsText}} DAILY BREAKDOWN {{dailyBreakdownText}} --- This is an automated report from CoinKrazy Payment System Do not reply to this email. Contact support@coinkrazy.com for questions. `, }; /** * Reconciliation Report Email Template */ export const reconciliationReportTemplate: EmailTemplate = { name: 'reconciliation_report', subject: 'CoinKrazy Reconciliation Report - {{date}}', htmlTemplate: `

Summary

Total Records

Matched

Match Rate

{{matchRate}}%

Discrepancies

By Provider

Provider	Records	Matched	Discrepancies

`, textTemplate: ` COINKRAZY RECONCILIATION REPORT Generated: {{generatedAt}} Period: {{timeRange}} SUMMARY Total Records: {{totalRecords}} Matched: {{totalMatched}} Match Rate: {{matchRate}}% Discrepancies: {{totalDiscrepancies}} BY PROVIDER {{providerText}} --- This is an automated report from CoinKrazy Payment System Do not reply to this email. Contact support@coinkrazy.com for questions. `, }; /** * Fraud Report Email Template */ export const fraudReportTemplate: EmailTemplate = { name: 'fraud_report', subject: 'CoinKrazy Fraud Detection Report - {{date}}', htmlTemplate: `

Summary

Total Analyzed

Critical

High Risk

Block Rate

{{blockRate}}%

⚠️ CRITICAL ALERT

{{criticalCount}} critical fraud cases detected. Immediate review required.

Top Fraud Indicators

Indicator	Count	Trend

`, textTemplate: ` COINKRAZY FRAUD DETECTION REPORT Generated: {{generatedAt}} Period: {{timeRange}} SUMMARY Total Analyzed: {{totalAnalyzed}} Critical: {{criticalCount}} High Risk: {{highCount}} Block Rate: {{blockRate}}% TOP FRAUD INDICATORS {{indicatorText}} --- This is an automated report from CoinKrazy Payment System Do not reply to this email. Contact support@coinkrazy.com for questions. `, }; /** * Render email template with variables */ export function renderEmailTemplate( template: EmailTemplate, variables: Record, format: 'html' | 'text' = 'html' ): string { let content = format === 'html' ? template.htmlTemplate : template.textTemplate; Object.entries(variables).forEach(([key, value]) => { const regex = new RegExp(`{{${key}}}`, 'g'); content = content.replace(regex, String(value)); }); return content; } /** * Create report email job */ export function createReportEmailJob( reportId: string, recipients: string[], reportContent: any, format: 'html' | 'pdf' | 'csv' | 'json' = 'html' ): ReportEmailJob { return { id: `EMAIL-${Date.now()}`, reportId, recipients, reportContent, format, status: 'pending', retryCount: 0, maxRetries: 3, }; } /** * Send report email via Brevo */ export async function sendReportEmail(job: ReportEmailJob): Promise { try { const template = paymentReportTemplate; // Select template based on report type const htmlContent = renderEmailTemplate(template, { date: new Date().toLocaleDateString(), generatedAt: new Date().toISOString(), timeRange: 'Last 7 days', ...job.reportContent.summary, }, 'html'); const textContent = renderEmailTemplate(template, { date: new Date().toLocaleDateString(), generatedAt: new Date().toISOString(), timeRange: 'Last 7 days', ...job.reportContent.summary, }, 'text'); // In production, send via Brevo API // For now, simulate successful send console.log(`[Report Email] Sending to ${job.recipients.join(', ')}`); console.log(`[Report Email] Subject: ${template.subject}`); console.log(`[Report Email] Format: ${job.format}`); return true; } catch (error) { console.error('[Report Email] Error:', error); return false; } } /** * Process email job with retry logic */ export async function processEmailJob(job: ReportEmailJob): Promise { job.status = 'sending'; const success = await sendReportEmail(job); if (success) { return { ...job, status: 'sent', sentAt: new Date(), }; } else { if (job.retryCount < job.maxRetries) { return { ...job, status: 'pending', retryCount: job.retryCount + 1, }; } else { return { ...job, status: 'failed', failureReason: 'Max retries exceeded', }; } } } /** * Get email delivery statistics */ export interface EmailStats { totalSent: number; totalFailed: number; totalPending: number; successRate: number; averageDeliveryTime: number; } export function getEmailStats(jobs: ReportEmailJob[]): EmailStats { const sent = jobs.filter(j => j.status === 'sent').length; const failed = jobs.filter(j => j.status === 'failed').length; const pending = jobs.filter(j => j.status === 'pending').length; const deliveryTimes = jobs .filter(j => j.sentAt) .map(j => (j.sentAt!.getTime() - j.reportId.length) / 1000); return { totalSent: sent, totalFailed: failed, totalPending: pending, successRate: jobs.length > 0 ? (sent / jobs.length) * 100 : 0, averageDeliveryTime: deliveryTimes.length > 0 ? deliveryTimes.reduce((a, b) => a + b) / deliveryTimes.length : 0, }; } /** * Batch process email jobs */ export async function batchProcessEmailJobs(jobs: ReportEmailJob[]): Promise { const results: ReportEmailJob[] = []; for (const job of jobs) { if (job.status === 'pending') { const result = await processEmailJob(job); results.push(result); } else { results.push(job); } } return results; } /** * Schedule email delivery for report */ export function scheduleEmailDelivery( reportId: string, recipients: string[], reportContent: any, deliveryTime: Date ): { job: ReportEmailJob; scheduledFor: Date } { const job = createReportEmailJob(reportId, recipients, reportContent); return { job, scheduledFor: deliveryTime, }; } /** * Get pending email deliveries */ export function getPendingEmailDeliveries(jobs: ReportEmailJob[]): ReportEmailJob[] { return jobs.filter(j => j.status === 'pending' || j.status === 'sending'); } /** * Resend failed emails */ export async function resendFailedEmails(jobs: ReportEmailJob[]): Promise { const failed = jobs.filter(j => j.status === 'failed'); const resendJobs = failed.map(j => ({ ...j, status: 'pending' as const, retryCount: 0, })); return batchProcessEmailJobs(resendJobs); }