salix/print/templates/reports/invoice/invoice.js

const Report = require(`vn-print/core/report`);
const vnReport = require('../../../core/mixins/vn-report.js');
const invoiceIncoterms = new Report('invoice-incoterms');

module.exports = {
    name: 'invoice',
    mixins: [vnReport],
    async serverPrefetch() {
        this.invoice = await this.findOneFromDef('invoice', [this.reference]);

        this.checkMainEntity(this.invoice);
        this.client = await this.findOneFromDef('client', [this.reference]);
        this.taxes = await this.rawSqlFromDef(`taxes`, [this.reference]);
        this.hasIntrastat = await this.findValueFromDef(`hasIntrastat`, [this.reference]);
        this.intrastat = await this.rawSqlFromDef(`intrastat`, [
            this.reference,
            this.reference,
            this.reference,
            this.reference
        ]);
        this.rectified = await this.rawSqlFromDef(`rectified`, [this.reference]);
        this.hasIncoterms = await this.findValueFromDef(`hasIncoterms`, [this.reference]);

        const tickets = await this.rawSqlFromDef('tickets', [this.reference]);
        const sales = await this.rawSqlFromDef('sales', [this.reference, this.reference]);

        const map = new Map();

        this.ticketObservations = '';
        for (let ticket of tickets) {
            ticket.sales = [];

            map.set(ticket.id, ticket);

            if (ticket.description) this.ticketObservations += ticket.description + ' ';
        }
        this.ticketObservations = this.ticketObservations.trim();

        for (let sale of sales) {
            const ticket = map.get(sale.ticketFk);

            if (ticket) ticket.sales.push(sale);
        }

        this.tickets = tickets;
    },
    data() {
        return {totalBalance: 0.00};
    },
    computed: {
        ticketsId() {
            const tickets = this.tickets.map(ticket => ticket.id);

            return tickets.join(', ');
        },
        botanical() {
            let phytosanitary = [];
            for (let ticket of this.tickets) {
                for (let sale of ticket.sales) {
                    if (sale.botanical)
                        phytosanitary.push(sale.botanical);
                }
            }

            return phytosanitary.filter((item, index) =>
                phytosanitary.indexOf(item) == index
            ).join(', ');
        },
        taxTotal() {
            const base = this.sumTotal(this.taxes, 'base');
            const vat = this.sumTotal(this.taxes, 'vat');
            return base + vat;
        }
    },
    methods: {
        saleImport(sale) {
            const price = sale.quantity * sale.price;

            return price * (1 - sale.discount / 100);
        },
        ticketSubtotal(ticket) {
            let subTotal = 0.00;
            for (let sale of ticket.sales)
                subTotal += this.saleImport(sale);

            return subTotal;
        },
        sumTotal(rows, prop) {
            let total = 0.00;
            for (let row of rows)
                total += parseFloat(row[prop]);

            return total;
        }
    },
    components: {
        'invoice-incoterms': invoiceIncoterms.build()
    },
    props: {
        reference: {
            type: String,
            description: 'The invoice ref'
        }
    }
};