@opengis/fastify-table/dist/server/helpers/funcs/qrcode.js

core-plugins

import { toDataURL, toString } from "qrcode";
function isAllowedType(type) {
    return Boolean({
        png: 1,
        svg: 1,
        // eps: 1, // not supported?
        // pdf: 1, // not supported?
    }[type]);
}
function isAllowedErrorCorrectionLevel(ecLevel) {
    return Boolean({
        L: 1,
        M: 1,
        Q: 1,
        H: 1,
    }[ecLevel]);
}
export default async function qrcodeGenerator({ hash, }) {
    const text = String(hash?.text || "");
    const type = String(hash?.type || "png").toLowerCase();
    const ecLevel = String(hash?.ec_level || "M").toUpperCase();
    const margin = Math.abs(hash?.margin || (type === "png" ? 4 : 1));
    let size;
    if (type === "png") {
        size = Math.abs(hash?.size) || 5;
    }
    else if (type === "svg") {
        size = Math.abs(hash?.size) || undefined;
    }
    if (!text) {
        return "Qr text is required.";
    }
    if (!isAllowedType(type)) {
        return `Type "${type}" is not allowed.`;
    }
    if (!isAllowedErrorCorrectionLevel(ecLevel)) {
        return `Error correction level "${ecLevel}" is not allowed.`;
    }
    try {
        if (type === "svg") {
            // для SVG нужен toString
            return await toString(text, {
                type: "svg",
                errorCorrectionLevel: ecLevel,
                margin,
                width: size,
            });
        }
        // для PNG/JPEG/WebP — toDataURL
        const mime = type === "png"
            ? "image/png"
            : type === "jpg" || type === "jpeg"
                ? "image/jpeg"
                : "image/webp";
        return await toDataURL(text, {
            errorCorrectionLevel: ecLevel,
            type: mime,
            margin,
            width: size,
        });
    }
    catch (err) {
        return err.toString();
    }
}