invoice-fs/lib/invoicePrinter.js

Nostalgic command-line invoicing application producing plain text invoices and JSON data structures. Uses the file system as a database

var out = require('../lib/out');

function InvoicePrinter(data) {
    this.data = data;
    this.width = 60;
    this.output = '';
}

InvoicePrinter.prototype.write = function(text, newLine) {
    if (text === undefined) { text = ""; }
    if (newLine === undefined) { newLine = true; }
    this.output += text;
    this.output += newLine ? "\n" : "";
};

InvoicePrinter.prototype.issuer = function() {
    this.write(out.centeredColumn(this.data.issuer.name, this.width));
    this.write(out.centeredColumn("ABN " + this.data.issuer.abn, this.width));
    this.write(out.centeredColumn("Telephone " + this.data.issuer.telephone, this.width));
    this.write(out.centeredColumn(this.data.issuer.address, this.width));
    this.write(out.centeredColumn("Email " + this.data.issuer.email, this.width));
    this.write(out.centeredColumn("Web " + this.data.issuer.web, this.width));
    this.write();
    var prefix = "";
    if (this.data.status === "UNLOCKED") {
        prefix = "** DRAFT ** ";
    } else if (this.data.status === "PAID") {
        prefix = "** PAID ** ";
    }
    this.write(out.centeredColumn(prefix + "TAX INVOICE #" +
        this.data.number, this.width));
};

InvoicePrinter.prototype.customer = function() {
    this.write("To:");
    this.write("[" + this.data.customer.code + "]");
    this.write(this.data.customer.companyName);
    this.write(this.data.customer.address1);
    this.write(this.data.customer.address2);
};

InvoicePrinter.prototype.invoice = function() {
    this.write(out.leftColumn("Date:", 20) + this.data.invoiceDate.toDateString());
    this.write(out.leftColumn("Order Number:", 20) + this.data.orderNumber);
    this.write(out.leftColumn("A.B.N.:", 20) + this.data.customer.abn);
    this.write(out.leftColumn("Payment Terms:", 20) + this.data.daysUntilDue + " Days");
    this.write(out.leftColumn("Due Date:", 20) + this.data.dueDate.toDateString());
    this.write(out.leftColumn("Payment Method:", 20) + "A/C " +  this.data.issuer.account);
    this.write(out.leftColumn("", 20) + "BSB " + this.data.issuer.bsb + " (REF " + this.data.number + ")");
};

InvoicePrinter.prototype.items = function() {
    for (item in this.data.items) {
        this.write(this.data.items[item].description);
        this.write(
            out.rightColumn(this.data.items[item].units.toString(), 4) +
            out.leftColumn(" @", 4) +
            out.leftColumn(this.data.currencySymbol + this.data.items[item].unitPrice.toFixed(2), 24) +
            out.rightColumn(this.data.currencySymbol + this.data.items[item].amount.toFixed(2), 28) +
            (this.data.items[item].taxable ? '*' : '')
        );
    }
};

InvoicePrinter.prototype.headerSection = function() {
    this.write("\n\n", false);
    this.write(this.data.issuer.asciiArt);
    this.issuer();
    this.write(out.divider("-", this.width));
};

InvoicePrinter.prototype.detailsSection = function() {
    this.customer();
    this.write();
    this.invoice();
    this.write();
    this.write(out.divider("-", this.width));
};

InvoicePrinter.prototype.itemsSection = function() {
    this.write();
    this.items();
    this.write(out.divider("-", this.width));
};

InvoicePrinter.prototype.footerSection = function() {
    this.write(
        out.leftColumn('TOTAL AMOUNT:', 20) +
        out.rightColumn(this.data.currencySymbol + this.data.total.toFixed(2), 40)
    );
    this.write("\n\n", false);
    this.write("Total includes GST of: " + this.data.currencySymbol + this.data.tax.toFixed(2));
    this.write(" * indicates taxable supply");
    this.write();
};

InvoicePrinter.prototype.print = function() {
    this.headerSection();
    this.detailsSection();
    this.itemsSection();
    this.footerSection();
    return this.output;
};

module.exports = InvoicePrinter;