LostCity Markets: Block/Unblock Seller Listings

Hide Buy/Sell listings from blocked sellers with UI to manage block list on lostcity.markets pages (top-left buttons, uniform size)
当前为 2025-10-31 提交的版本，查看最新版本。
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// ==UserScript==
// @name         LostCity Markets: Block/Unblock Seller Listings
// @namespace    http://tampermonkey.net/
// @version      2.2
// @description  Hide Buy/Sell listings from blocked sellers with UI to manage block list on lostcity.markets pages (top-left buttons, uniform size)
// @author       Zarotrox
// @match        https://lostcity.markets/*
// @grant        none
// @icon         https://i.ibb.co/44SS6xZ/Zarotrox.png
// @license MIT
// ==/UserScript==

(function () {
    'use strict';

    const STORAGE_KEY = 'blockedSellersList';

    function getBlockedSellers() {
        const stored = localStorage.getItem(STORAGE_KEY);
        return stored ? JSON.parse(stored) : [];
    }

    function saveBlockedSellers(list) {
        localStorage.setItem(STORAGE_KEY, JSON.stringify(list));
    }

    function hideListings() {
        const blockedSellers = getBlockedSellers();
        const rows = document.querySelectorAll('tr');
        rows.forEach(row => {
            const sellerLink = row.querySelector('a[href^="/users/"]');
            if (sellerLink) {
                const sellerName = sellerLink.textContent.trim();
                if (blockedSellers.includes(sellerName)) {
                    row.style.display = 'none';
                }
            }
        });
    }

    function createButton(label, onClick, offsetY) {
        const button = document.createElement('button');
        button.textContent = label;
        Object.assign(button.style, {
            position: 'fixed',
            top: `${offsetY}px`,
            left: '20px',
            zIndex: 10000,
            width: '140px',
            height: '40px',
            padding: '8px',
            backgroundColor: '#222',
            color: '#fff',
            border: 'none',
            borderRadius: '6px',
            cursor: 'pointer',
            fontSize: '14px',
            boxShadow: '0 2px 6px rgba(0,0,0,0.3)',
            textAlign: 'center'
        });
        button.addEventListener('click', onClick);
        document.body.appendChild(button);
    }

    function addBlockButton() {
        createButton('🔕 Block Seller', () => {
            const name = prompt('Enter seller name to block:');
            if (name) {
                const list = getBlockedSellers();
                if (!list.includes(name)) {
                    list.push(name);
                    saveBlockedSellers(list);
                    hideListings();
                    alert(`Seller "${name}" has been blocked.`);
                } else {
                    alert(`Seller "${name}" is already blocked.`);
                }
            }
        }, 20);
    }

    function addUnblockButton() {
        createButton('✅ Unblock Seller', () => {
            const list = getBlockedSellers();
            if (list.length === 0) {
                alert('Your block list is empty.');
                return;
            }
            const name = prompt(`Blocked sellers:\n${list.join(', ')}\n\nEnter seller name to unblock:`);
            if (name && list.includes(name)) {
                const updated = list.filter(s => s !== name);
                saveBlockedSellers(updated);
                alert(`Seller "${name}" has been unblocked.`);
                location.reload(); // Refresh to show unblocked listings
            } else if (name) {
                alert(`Seller "${name}" is not in your block list.`);
            }
        }, 70);
    }

    // Initialize
    hideListings();
    addBlockButton();
    addUnblockButton();

    const observer = new MutationObserver(hideListings);
    observer.observe(document.body, { childList: true, subtree: true });
})();
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