import { Controller, Get, Query, Res, Logger } from '@nestjs/common'; import * as express from 'express'; import { PrismaService } from '../../prisma/prisma.service'; @Controller('whatsapp/quantity') export class QuantityWebviewController { private readonly logger = new Logger(QuantityWebviewController.name); constructor(private readonly prisma: PrismaService) {} @Get() async serveQuantitySelector( @Query('productId') productId: string, @Query('phone') phone: string, @Query('businessId') businessId: string, @Res() res: express.Response, ) { this.logger.log(`Quantity webview requested for product: ${productId}, phone: ${phone}`); const product = await this.prisma.product.findUnique({ where: { id: productId || '' }, }); if (!product) { res.status(404).send('Product not found'); return; } const safeName = this.esc(product.name); const safePrice = product.price; const safeImg = product.imageUrl || 'https://images.unsplash.com/photo-1584269600464-37b1b58a9fe7?q=80&w=400'; const safePhone = this.esc(phone || ''); const safeBusinessId = this.esc(businessId || ''); const inStock = product.stockQuantity === null || product.stockQuantity > 0; const html = ` RetailBot - Quantity Selection

arrow_back

RetailBot

online

more_vert

Hello! I'm looking for some premium coffee beans. Do you have organic options?

09:41 AM

Of course! Our ${safeName} is a customer favorite. Here are the details:

${safeName}

$${safePrice.toFixed(2)}

${this.esc(product.description || 'Premium quality, ethically sourced.')}

09:42 AM

Select Quantity

${safeName}

$${safePrice.toFixed(2)} per unit

verified ${inStock ? 'In Stock' : 'Out of Stock'}

Units

Subtotal: $${safePrice.toFixed(2)}

Secure checkout powered by RetailBot. Your order will be added to your chat basket.

`; res.setHeader('Content-Type', 'text/html; charset=utf-8'); res.setHeader('Cache-Control', 'no-store'); res.send(html); } private esc(str: string): string { return str .replace(/&/g, '&') .replace(//g, '>') .replace(/"/g, '"') .replace(/'/g, '''); } }