Arrow Keys navigate Marketplace

This script makes it so you can navigate marketplace with arrow keys between next and previous pages. It also attemps to remove duplicates from results(highly imperfect).
目前为 2022-03-10 提交的版本。查看最新版本。
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// ==UserScript==
// @name         Arrow Keys navigate Marketplace
// @namespace    http://tampermonkey.net/
// @version      0.10
// @license      MIT
// @description  This script makes it so you can navigate marketplace with arrow keys between next and previous pages. It also attemps to remove duplicates from results(highly imperfect).
// @author       Aida Beorn
// @match        https://marketplace.secondlife.com/*
// @icon         https://www.google.com/s2/favicons?domain=secondlife.com
// ==/UserScript==

function NextPage() {
	let next = document.getElementsByClassName('next_page')[0];
    if(next) {
        next.click();
    }
}

function PreviousPage() {
	let prev = document.getElementsByClassName('previous_page')[0];
    if(prev) {
        prev.click();
    }
}

function HandleKeyEvent(e) {
    switch(e.key) {
        case "ArrowRight":
            NextPage();
            break;
        case "ArrowLeft":
            PreviousPage();
            break;
    }
}


(function() {
    'use strict';

    let captureSupported = false;
    let passiveSupported = false;

    try {
        const options = {
            get capture() { // This function will be called when the browser
                //   attempts to access the capture property.
                captureSupported = true;
                return false;
            },
            get passive() { // This function will be called when the browser
                //   attempts to access the passive property.
                passiveSupported = true;
                return false;
            }
        };

        window.addEventListener("test", null, options);
        window.removeEventListener("test", null, options);
    } catch(err) {
        captureSupported = false;
        let passiveSupported = false;
    }

    const options = {
        capture: captureSupported,
        passive: passiveSupported
    };

    document.addEventListener('keyup', HandleKeyEvent, options);
    RemoveDuplicates();
})();



function RemoveDuplicates() {
    if(window.location.pathname !== "/products/search") {
        return;
    }


    let count = 0;
    let loopcount = 0;
    const maxDistance = 10;
    const filterGatcha = true;
    const filterDuplicates = true;
    const debuging = false;

    const gachaTerms = [
        "gacha",
        "rare",
        "common"
    ];

    const fragment = new DocumentFragment();
    const realDocument = document.getElementsByClassName('product-listing gallery')[0];

    const realList = Array.from(realDocument.childNodes);
    realList.forEach(v => {
        fragment.appendChild(v);
    });

    let items1 = Array.from(fragment.querySelectorAll('.gallery-item'));
    let items2;

    let start;
    let endItemFilter;
    let endGachaFilter;

    if(true) {
        start = new Date();
    }

    items1.forEach((item1, idx1) => {
        items2 = Array.from(fragment.querySelectorAll('.gallery-item'));
        items2.forEach((item2, idx2) => {
            if(idx1 !== idx2) {
                const levDistance = levenshteinDistance(item1.children[1].innerText, item2.children[1].innerText);
                if(levDistance < maxDistance && levDistance !== 0) {
                    if(debuging) {
                        console.log(`${item1.children[1].innerText}::${item2.children[1].innerText}::${levDistance}`);
                        //console.log(items1[idx1].children[1].innerText,items2[idx2].children[1].innerText);
                    }
                    item2.remove();
                    count++;
                }
                loopcount++;
            }
        })
    })

    if(true) {
        endItemFilter = new Date();
    }

    if(filterGatcha) {
        let items = Array.from(fragment.querySelectorAll('.gallery-item'));
        for(let j = 0; j < items.length; j++) {
            const item = items[j];
            const itemLower = item.children[1].innerText.toLowerCase();
            if (gachaTerms.some(v => itemLower.includes(v))) {
                if(debuging) {
                    console.log(itemLower);
                }
                item.remove();
                count++;
            }
            loopcount++;
        }
    }

    if(true) {
        endGachaFilter = new Date();

        console.log(`Items: ${endItemFilter - start}; Gacha: ${endGachaFilter - endItemFilter}`);
    }

    realDocument.appendChild(fragment);

    console.log(`Removed ${count} items in ${loopcount} iterations`);
}

function levenshteinDistance(a, b){
    if (a === b) {
      return 0;
    }

    if (a.length > b.length) {
      var tmp = a;
      a = b;
      b = tmp;
    }

    var la = a.length;
    var lb = b.length;

    while (la > 0 && (a.charCodeAt(la - 1) === b.charCodeAt(lb - 1))) {
      la--;
      lb--;
    }

    var offset = 0;

    while (offset < la && (a.charCodeAt(offset) === b.charCodeAt(offset))) {
      offset++;
    }

    la -= offset;
    lb -= offset;

    if (la === 0 || lb < 3) {
      return lb;
    }

    var x = 0;
    var y;
    var d0;
    var d1;
    var d2;
    var d3;
    var dd;
    var dy;
    var ay;
    var bx0;
    var bx1;
    var bx2;
    var bx3;

    var vector = [];

    for (y = 0; y < la; y++) {
      vector.push(y + 1);
      vector.push(a.charCodeAt(offset + y));
    }

    var len = vector.length - 1;

    for (; x < lb - 3;) {
      bx0 = b.charCodeAt(offset + (d0 = x));
      bx1 = b.charCodeAt(offset + (d1 = x + 1));
      bx2 = b.charCodeAt(offset + (d2 = x + 2));
      bx3 = b.charCodeAt(offset + (d3 = x + 3));
      dd = (x += 4);
      for (y = 0; y < len; y += 2) {
        dy = vector[y];
        ay = vector[y + 1];
        d0 = _min(dy, d0, d1, bx0, ay);
        d1 = _min(d0, d1, d2, bx1, ay);
        d2 = _min(d1, d2, d3, bx2, ay);
        dd = _min(d2, d3, dd, bx3, ay);
        vector[y] = dd;
        d3 = d2;
        d2 = d1;
        d1 = d0;
        d0 = dy;
      }
    }

    for (; x < lb;) {
      bx0 = b.charCodeAt(offset + (d0 = x));
      dd = ++x;
      for (y = 0; y < len; y += 2) {
        dy = vector[y];
        vector[y] = dd = _min(dy, d0, dd, bx0, vector[y + 1]);
        d0 = dy;
      }
    }

    return dd;
};

function _min(d0, d1, d2, bx, ay)
  {
    return d0 < d1 || d2 < d1
        ? d0 > d2
            ? d2 + 1
            : d0 + 1
        : bx === ay
            ? d1
            : d1 + 1;
  }
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