salix/print/templates/reports/cmr/cmr.js

const config = require(`vn-print/core/config`);
const vnReport = require('../../../core/mixins/vn-report.js');
const md5 = require('md5');
const fs = require('fs-extra');

module.exports = {
	name: 'cmr',
	mixins: [vnReport],
	async serverPrefetch() {
		this.data = await this.findOneFromDef('data', [this.id]);
		if (this.data.ticketFk) {
			this.merchandises = await this.rawSqlFromDef('merchandise', [this.data.ticketFk]);
			this.signature = await this.findOneFromDef('signature', [this.data.ticketFk]);
		} else
			this.merchandises = null;
	},
	props: {
		id: {
			type: Number,
			required: true,
			description: 'The cmr id'
		},
	},
	computed: {
		signPath() {
			if (!this.signature) return;

			const signatureName = this.signature.signature
			const hash = md5(signatureName.toString()).substring(0, 3);
			const file = `${config.storage.root}/${hash}/${signatureName}.png`;
			if (!fs.existsSync(file)) return null;

			return `data:image/png;base64, ${Buffer.from(fs.readFileSync(file), 'utf8').toString('base64')}`;
		},
		async getStamp() {
			const data =  this.data.stamp.toString('base64');
			return `data:image/png;base64, ${data}`;
		}
	},
};