function uuidv4() {
    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
        let r = Math.random() * 16 | 0, v = c == 'x' ? r : (r & 0x3 | 0x8);
        return v.toString(16);
    });
}

function formatMoney(amount, decimalCount = 2, decimal = ".", thousands = ",") {
    try {
        decimalCount = Math.abs(decimalCount);
        decimalCount = isNaN(decimalCount) ? 2 : decimalCount;

        const negativeSign = amount < 0 ? "-" : "";

        let i = parseInt(amount = Math.abs(Number(amount) || 0).toFixed(decimalCount)).toString();
        let j = (i.length > 3) ? i.length % 3 : 0;

        return negativeSign + (j ? i.substr(0, j) + thousands : '') + i.substr(j).replace(/(\d{3})(?=\d)/g, "$1" + thousands) + (decimalCount ? decimal + Math.abs(amount - i).toFixed(decimalCount).slice(2) : "");
    } catch (e) {
        console.log(e);
    }
}
/**
 * Create a new toast message and return it.
 * @param {string} title
 * @param {string} message
 * @param {string} color
 * @return {jQuery} toast object
 */
function showToast(title, message, color) {
    return $('body').toast({
        displayTime: 'auto',
        showProgress: 'top',
        classProgress: color,
        className: {
            toast: 'ui message'
        },
        closeIcon: true,
        title: title,
        message: message,
        closeOnClick: false,
        class: color
    });
}

const delay = ms => new Promise(res => setTimeout(res, ms));


/**
 * Copy text to clipboard.
 */
 function copyTextToClipboard(text) {
    let textArea = document.createElement("textarea");
    textArea.style.position = 'fixed';
    textArea.style.top = 0;
    textArea.style.left = 0;
    textArea.style.width = '2em';
    textArea.style.height = '2em';
    textArea.style.padding = 0;
    textArea.style.border = 'none';
    textArea.style.outline = 'none';
    textArea.style.boxShadow = 'none';
    textArea.style.background = 'transparent';
    textArea.value = text;

    document.body.appendChild(textArea);
    textArea.focus();
    textArea.select();

    try {
        let successful = document.execCommand('copy');
        let msg = successful ? 'successful' : 'unsuccessful';
        alert('Copying text was ' + msg);
    } catch (err) {
        alert('Failed to copy');
    }

    document.body.removeChild(textArea);
}

function convertHtmlToRtf(html) {
    if (!(typeof html === "string" && html)) {
        return null;
    }

    let tmpRichText, hasHyperlinks;
    let richText = html;

    // Singleton tags
    richText = richText.replace(/<(?:hr)(?:\s+[^>]*)?\s*[\/]?>/ig, "{\\pard \\brdrb \\brdrs \\brdrw10 \\brsp20 \\par}\n{\\pard\\par}\n");
    richText = richText.replace(/<(?:br)(?:\s+[^>]*)?\s*[\/]?>/ig, "{\\pard\\par}\n");

    // Empty tags
    richText = richText.replace(/<(?:p|div|section|article)(?:\s+[^>]*)?\s*[\/]>/ig, "{\\pard\\par}\n");
    richText = richText.replace(/<(?:[^>]+)\/>/g, "");

    // Hyperlinks
    richText = richText.replace(
        /<a(?:\s+[^>]*)?(?:\s+href=(["'])(?:javascript:void\(0?\);?|#|return false;?|void\(0?\);?|)\1)(?:\s+[^>]*)?>/ig,
        "{{{\n");
    tmpRichText = richText;
    richText = richText.replace(
        /<a(?:\s+[^>]*)?(?:\s+href=(["'])(.+)\1)(?:\s+[^>]*)?>/ig,
        "{\\field{\\*\\fldinst{HYPERLINK\n \"$2\"\n}}{\\fldrslt{\\ul\\cf1\n");
    hasHyperlinks = richText !== tmpRichText;
    richText = richText.replace(/<a(?:\s+[^>]*)?>/ig, "{{{\n");
    richText = richText.replace(/<\/a(?:\s+[^>]*)?>/ig, "\n}}}");

    // Start tags
    richText = richText.replace(/<(?:b|strong)(?:\s+[^>]*)?>/ig, "{\\b\n");
    richText = richText.replace(/<(?:i|em)(?:\s+[^>]*)?>/ig, "{\\i\n");
    richText = richText.replace(/<(?:u|ins)(?:\s+[^>]*)?>/ig, "{\\ul\n");
    richText = richText.replace(/<(?:strike|del)(?:\s+[^>]*)?>/ig, "{\\strike\n");
    richText = richText.replace(/<sup(?:\s+[^>]*)?>/ig, "{\\super\n");
    richText = richText.replace(/<sub(?:\s+[^>]*)?>/ig, "{\\sub\n");
    richText = richText.replace(/<(?:p|div|section|article)(?:\s+[^>]*)?>/ig, "{\\pard\n");

    // End tags
    richText = richText.replace(/<\/(?:p|div|section|article)(?:\s+[^>]*)?>/ig, "\n\\par}\n");
    richText = richText.replace(/<\/(?:b|strong|i|em|u|ins|strike|del|sup|sub)(?:\s+[^>]*)?>/ig, "\n}");

    // Strip any other remaining HTML tags [but leave their contents]
    richText = richText.replace(/<(?:[^>]+)>/g, "");

    // Prefix and suffix the rich text with the necessary syntax
    richText =
        "{\\rtf1\\ansi\n" + (hasHyperlinks ? "{\\colortbl\n;\n\\red0\\green0\\blue255;\n}\n" : "") + richText +  "\n}";

    return richText;
  }