Leech Display

While reviewing it shows you if a card is a leech by looking at the review history

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Leech Display
// @namespace    jpdb.io
// @version      0.1.7
// @description  While reviewing it shows you if a card is a leech by looking at the review history
// @author       Kokuru
// @match        https://jpdb.io/review*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=jpdb.io
// @grant        none
// @license The Unlicense
// ==/UserScript==

(function() {
    'use strict';



    window.LeechThreshold = {};
    // How many times a card has to be answered Nothing / Something to count
    window.LeechThreshold.threshold = 4
    // How many times a card has to be answered correctly before to be valid for the Threshold
    window.LeechThreshold.newProtection = 4
    // Show New Card Indicator
    window.LeechThreshold.showNewIndicator = true


    window.LeechThreshold.init = () =>{

        // Code from daruko - JPDB add context menu in reviews
        // https://greatest.deepsurf.us/en/scripts/471987-jpdb-add-context-menu-in-reviews
        const wordUri = document.querySelector('.review-reveal .answer-box a[href^="/vocabulary"]')?.href;
        const deckUri = document.querySelector('.review-reveal a[href^="/deck"]')?.href;
        if (!wordUri || !deckUri) {
            return;
        }
        const [,, wordId, word] = new URL(wordUri).pathname.split('/', 4);
        if (!word) {
            return;
        }

        fetch(`https://jpdb.io/vocabulary/${wordId}/${word}/review-history`)
            .then((response) => response.text())
            .then((text) => {
            const html = new DOMParser().parseFromString(text, "text/html");
            window.LeechThreshold.getLeechCount(html)
        })
            .catch((err) => {
            console.error('An error has occurred.', err);
        });
        // End
    };

    window.LeechThreshold.getLeechCount = (xml) =>{
        const threshold = window.LeechThreshold.threshold;
        const newProtection = window.LeechThreshold.newProtection;
        let current = 0
        let isReady = false;
        let isReadyCount = 0;
        let debugLog = [];
        let lastDate = "";
        const histories = xml.querySelectorAll(".review-history > div");
        histories.forEach((historie, index) =>{
            var state = historie.children[2].textContent;
            var date = historie.children[0].textContent.substring(0,historie.children[0].textContent.indexOf("T"));
            if (state != "Next"){
                if (lastDate == ""){
                    lastDate = date
                }
                if (isReady){
                    if (state == "Nothing" || state == "Something"){
                        if (lastDate == date){
                            debugLog.push(`${date} - [${current}][Same Day] ${state}`)
                        } else {
                            current++;
                            lastDate = date
                            debugLog.push(`${date} - [${current}] ${state}`)
                        }
                    } else {
                        debugLog.push(`${date} - [${current}] ${state}`)
                    }
                } else {
                    debugLog.push(`${date} - [Skip] ${state}`)
                    if (state == "Nothing" || state == "Something"){
                        isReadyCount = 0
                    } else {
                        isReadyCount++;
                        if (isReadyCount >= newProtection){
                            isReady = true;
                        }
                    }
                }}
        });
        console.log(histories.length, debugLog)
        const info = document.createElement("div");
        info.innerHTML = "";
        info.style.color = "green"
        info.style.position = "absolute"
        if (current >= threshold){
            info.style.color = "red"
            info.innerHTML = "> Leech <";
        }
        if (!isReady && window.LeechThreshold.showNewIndicator){
            info.innerHTML = "New";
        }
        document.querySelector(".plain").prepend(info)

        const info2 = document.createElement("div");
        info2.innerHTML = `Contamination ${current}/${threshold}`;
        info2.style.color = "#bbb"


        document.querySelector(".vbox.gap").append(info2)
    }


    window.LeechThreshold.init();
    if (document.querySelector("#show-answer"))
        document.querySelector("#show-answer").addEventListener("click", ()=>{
            setTimeout(window.LeechThreshold.init,1)
        })
    // Your code here...
})();