create href to local file path specified by lfp scheme

after register hanlder for lfp, we need to construct the scheme url corresponding to local file path, the path consist on 2 key part, formated date in YYYY-MM-DD and bgm japanese name(jpn), this the user script the construct the path based existing info on the page

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// ==UserScript==
// @name         create href to local file path specified by lfp scheme
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  after register hanlder for lfp, we need to construct the scheme url corresponding to local file path, the path consist on 2 key part, formated date in YYYY-MM-DD and bgm japanese name(jpn), this the user script the construct the path based existing info on the page
// @author       You
// @include      /^https?://(bangumi|bgm).tv/anime/list/.*$/
// @include      /^https?://(bangumi|bgm).tv/index.*$/
// @include      /^https://localhost:8001/anime/tags/.*$/
// @include      /^https://cityhunter.me/anime/tags/.*$/
// @icon         https://www.google.com/s2/favicons?sz=64&domain=bgm.tv
// @grant        none
// ==/UserScript==

(function () {
    'use strict';
    const interval = setInterval(() => {
        if (document.getElementById('browserItemList')) {
            clearInterval(interval);
            main();
        }
    }, 500);
})();

const DATE_REGEX = /(\d{4})[-/年]?(\d{1,2})[-/月]?(\d{1,2})[-/日]?/
function main() {
    const extractedJpn = getJpn()
//    const infotips = $('#browserItemList .info.tip')
    const infotips = document.querySelectorAll('#browserItemList .info.tip');

    for (let i = 0; i < infotips.length; i++) {
        const match = infotips[i].innerHTML.match(DATE_REGEX)
        // if (match)
        //     console.log(match[0])
        const convertedDate = convertDate(match[0])

        const folderPath = `${convertedDate} ${extractedJpn[i]}`
        console.log(folderPath)
        const lfp = createAnchorElement(folderPath)
        insertAfter(lfp, infotips[i])
    }
}

function getJpn() {
    // Get the <ul> element by its ID
    const ulElement = document.getElementById('browserItemList');

    // Get all the <h3> elements within the <ul> element
    const h3Elements = ulElement.getElementsByTagName('h3');

    // Create an empty array to store the extracted inner texts
    const extractedTexts = [];

    // Iterate over each <h3> element
    for (const h3Element of h3Elements) {
        //in list/do page, jpn title present in small tag if chn tag exist
        //otherwise it present in a tag, for index page, it always present in a tag
        const smallElement = h3Element.querySelector('small');
        if (smallElement) {
            //console.log(`small tag: ${smallElement.innerText}`);
            extractedTexts.push(smallElement.innerText);
        } else {
            //console.log(`a tag: ${h3Element.querySelector('a').innerText}`);
            extractedTexts.push(h3Element.querySelector('a').innerText);
        }
    }

    return extractedTexts;
}

function convertDate(dateString) {
    var match = dateString.match(DATE_REGEX);
    //https://stackoverflow.com/questions/9428518/javascript-0-at-the-end-of-match-statement
    if (match) {
        var year = match[1];
        var month = ("0" + match[2]).slice(-2);
        var day = ("0" + match[3]).slice(-2);
        return year + "-" + month + "-" + day;
    }
    console.log("not matched")
    // Return the original string if the format is not recognized
    return dateString;
}

function insertAfter(newNode, existingNode) {
    existingNode.parentNode.insertBefore(newNode, existingNode.nextSibling);
}

function createAnchorElement(text) {
    // Create the anchor element
    const anchor = document.createElement('a');

    // Set the href attribute
    anchor.href = `lfp://${text}`;

    // Set the inner text
    anchor.innerText = text;

    // Return the created anchor element
    return anchor;
}