Subeta Autobuy

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This script automatically buys items at the lowest price on the Shop Search page.

当前为 2017-06-28 提交的版本，查看最新版本。

此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.greasyfork.icu/scripts/30965/203154/Subeta%20Autobuy.js

提问、发表评价或者举报此脚本。

换行

// ==UserScript==
// @name         Subeta Autobuy
// @namespace    http://artees.pw/
// @description  This script automatically buys items at the lowest price on the Shop Search page.
// @version      0.3
// @author       Artees
// @match        *://subeta.net/user_shops.php/search/shops/*
// @match        *://subeta.net/shop.php?shopid=*
// @grant        none
// @icon         https://subeta.net/favicon.ico
// @icon64       https://img.subeta.net/items/accessory_hustlermoneyclip.gif
// ==/UserScript==

const KEY_AUTOBUY_SOURCE = "autobuySource",
    KEY_AUTOBUY_NPC = "autobuyNpc";

function autobuy() {
    setTimeout(buy, 500);

    function buy() {
        var source = sessionStorage[KEY_AUTOBUY_SOURCE];
        if (source === undefined) return;
        sessionStorage.removeItem(KEY_AUTOBUY_SOURCE);
        var rows = document.getElementsByClassName("row"),
            items = [];
        if (rows.length === 0) return;
        for (var i = 0; i < rows.length; i++) {
            var row = rows[i],
                buttons = getButtons(row);
            if (buttons.length === 0) continue;
            items.push(row);
        }
        function getButtons(e) {
            return e.getElementsByClassName("btn btn-primary btn-sm");
        }
        items.sort(comparePrices);
        var item = items[0],
            isNPC = item.innerText.indexOf("NPC Shop") !== -1;
        if (isNPC) {
            sessionStorage[KEY_AUTOBUY_NPC] = source;
        }
        var button = getButtons(item)[0],
            nextButton = getButtons(items[1])[0],
            count = 0;
        button.click();
        if (!isNPC) {
            var sourceIntervalId = setInterval(openSource, 500);
        }
        function openSource() {
            count++;
            if (button.disabled && nextButton.disabled && count < 10) return;
            open(source, "_self");
            clearInterval(sourceIntervalId);
        }
    }

    function comparePrices(a, b) {
        var aPrice = getPrice(a),
            bPrice = getPrice(b);
        function getPrice(item) {
            var itemText = item.innerHTML,
                end = itemText.indexOf(" sP"),
                start = itemText.lastIndexOf(">", end) + 1,
                priceText = replaceAll(itemText.substring(start, end), ",", "");
            return parseInt(priceText);
        }
        return aPrice - bPrice;
    }

    function replaceAll(target, searchValue, replaceValue) {
        return target.replace(new RegExp(searchValue, 'g'), replaceValue);
    }

    back();

    function back() {
        if (document.body.textContent.indexOf("been put in your items") === -1) return;
        var source = sessionStorage[KEY_AUTOBUY_NPC];
        if (source === undefined) return;
        sessionStorage.removeItem(KEY_AUTOBUY_NPC);
        open(source, "_self");
    }
}