@sourceloop/ctrl-plane-tenant-management-service/dist/services/invoice-helper.service.js

Tenant Management microservice for SaaS control plane

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.InvoiceHelperService = void 0;
const tslib_1 = require("tslib");
const pdfkit_1 = tslib_1.__importDefault(require("pdfkit"));
const node_fs_1 = tslib_1.__importDefault(require("node:fs"));
const repository_1 = require("@loopback/repository");
const repositories_1 = require("../repositories");
const context_1 = require("@loopback/context");
const LARGE_SIZE = 16;
const MEDIUM_SIZE = 12;
let InvoiceHelperService = class InvoiceHelperService {
    constructor(invoiceRepository) {
        this.invoiceRepository = invoiceRepository;
    }
    async createInvoice(invoice) {
        return this.invoiceRepository.create(invoice);
    }
    async downloadInvoice(id) {
        const invoice = await this.invoiceRepository.findById(id);
        if (!invoice) {
            throw new Error('Invoice with given id does not exist');
        }
        const pdfFilePath = await this.generatePDF(invoice);
        invoice.invoiceFile = pdfFilePath;
        await this.invoiceRepository.updateById(invoice.id, invoice);
    }
    async generatePDF(invoice) {
        const doc = new pdfkit_1.default();
        const fileName = `invoice_${invoice.id}.pdf`;
        const writeStream = node_fs_1.default.createWriteStream(fileName);
        doc.pipe(writeStream);
        // Write invoice details to PDF
        doc
            .fontSize(LARGE_SIZE)
            .text('Invoice Details', { underline: true })
            .moveDown();
        doc.fontSize(MEDIUM_SIZE).text(`Invoice ID: ${invoice.id}`).moveDown();
        doc
            .fontSize(MEDIUM_SIZE)
            .text(`Start Date: ${invoice.startDate}`)
            .moveDown();
        doc.fontSize(MEDIUM_SIZE).text(`End Date: ${invoice.endDate}`).moveDown();
        doc
            .fontSize(MEDIUM_SIZE)
            .text(`Amount: ${invoice.amount} ${invoice.currencyCode}`)
            .moveDown();
        doc.fontSize(MEDIUM_SIZE).text(`Due Date: ${invoice.dueDate}`).moveDown();
        doc.fontSize(MEDIUM_SIZE).text(`Status: ${invoice.status}`).moveDown();
        // End PDF generation
        doc.end();
        return new Promise((resolve, reject) => {
            writeStream.on('finish', () => {
                resolve(fileName);
            });
            writeStream.on('error', err => {
                reject(err);
            });
        });
    }
};
exports.InvoiceHelperService = InvoiceHelperService;
exports.InvoiceHelperService = InvoiceHelperService = tslib_1.__decorate([
    (0, context_1.injectable)({ scope: context_1.BindingScope.TRANSIENT }),
    tslib_1.__param(0, (0, repository_1.repository)(repositories_1.InvoiceRepository)),
    tslib_1.__metadata("design:paramtypes", [repositories_1.InvoiceRepository])
], InvoiceHelperService);
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