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src/tickets/tickets.service.ts

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+import { Injectable } from '@nestjs/common';
+import { CreateTicketDto } from './dto/create-ticket.dto';
+import { PrismaService } from '../prisma/prisma.service';
+import { MailService } from '../mail/mail.service';
+import * as QRCode from 'qrcode'; // Import qrcode library
+
+@Injectable()
+export class TicketsService {
+  constructor(
+    private prisma: PrismaService,
+    private mailService: MailService,
+  ) {}
+
+  async create(createTicketDto: CreateTicketDto) {
+    const ticket = await this.prisma.ticket.create({
+      data: createTicketDto,
+      include: { event: true },
+    });
+
+    try {
+      // Generate QR code buffer from ticket ID
+      const qrCodeBuffer = await QRCode.toBuffer(ticket.id, {
+        errorCorrectionLevel: 'H', // High error correction
+        type: 'png', // Output as PNG image
+        width: 250, // QR code width
+        color: {
+          dark: '#000000', // Black dots
+          light: '#FFFFFF', // White background
+        },
+      });
+
+      await this.mailService.sendTicket(
+        ticket.attendeeEmail,
+        ticket.attendeeName,
+        ticket.id,
+        ticket.event.name,
+        qrCodeBuffer, // Pass the QR code buffer
+      );
+    } catch (error) {
+      console.error('Failed to send ticket email:', error);
+      // Optionally throw error or just log it.
+      // For now, we log it so the ticket creation doesn't fail if email fails (unless strict requirement).
+    }
+
+    return ticket;
+  }
+
+  findAll(eventId: string) {
+    return this.prisma.ticket.findMany({
+      where: { eventId },
+    });
+  }
+
+  async resendEmail(id: string) {
+    const ticket = await this.prisma.ticket.findUnique({
+      where: { id },
+      include: { event: true },
+    });
+
+    if (!ticket) {
+      throw new Error('Ticket not found');
+    }
+
+    try {
+      const qrCodeBuffer = await QRCode.toBuffer(ticket.id, {
+        errorCorrectionLevel: 'H',
+        type: 'png',
+        width: 250,
+        color: {
+          dark: '#000000',
+          light: '#FFFFFF',
+        },
+      });
+
+      await this.mailService.sendTicket(
+        ticket.attendeeEmail,
+        ticket.attendeeName,
+        ticket.id,
+        ticket.event.name,
+        qrCodeBuffer,
+      );
+      return { success: true, message: 'Email resent successfully' };
+    } catch (error) {
+      console.error('Failed to resend ticket email:', error);
+      throw new Error('Failed to send email');
+    }
+  }
+
+  updateStatus(id: string, status: string) {
+    return this.prisma.ticket.update({
+      where: { id },
+      data: { status },
+    });
+  }
+
+  remove(id: string) {
+    return this.prisma.ticket.delete({
+      where: { id },
+    });
+  }
+}