PistonHeads - Block users.

Hide posts + quotes from annoying users. Right-click the username on a post to block/unblock.

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 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         PistonHeads - Block users.
// @namespace    BS_PH
// @version      1.71
// @description  Hide posts + quotes from annoying users. Right-click the username on a post to block/unblock.
// @author       Budgie Smuggler
// @match        https://www.pistonheads.com/gassing/topic.asp*
// @grant        GM_getValue
// @grant        GM_setValue
// ==/UserScript==

(function () {
	"use strict";

	// storage for our blocked users
	let blockedUsers = GM_getValue("ph_blocked_users", []);

	function normalize(name) {
		return (name || "").trim().toLowerCase();
	}

	function isBlocked(name) {
		return blockedUsers.some((u) => normalize(u) === normalize(name));
	}

	function toggleBlock(username) {
		const norm = normalize(username);
		if (isBlocked(username)) {
            // already blocked, remove them from the block list
			blockedUsers = blockedUsers.filter((u) => normalize(u) !== norm);
		} else {
            // not blocked yet, add them to the naughty list
			blockedUsers.push(username);
		}
		GM_setValue("ph_blocked_users", blockedUsers);
		updateVisibility();
	}

	function createPlaceholder(username, isQuote, originalContent, container) {
		const placeholder = document.createElement("div");
		const styles = isQuote
			? "padding:8px; color:#999; font-style:italic; background:#f5f5f5; border-left:3px solid #ddd; cursor:pointer;"
			: "padding:12px; color:#777; font-style:italic; background:#f9f9f9; border:1px solid #eee; cursor:pointer;";

		placeholder.style.cssText = styles;
		placeholder.innerHTML = `[Hidden ${isQuote ? "quote from" : "- user"} <strong>${username}</strong> ${isQuote ? "" : "blocked"}] <span style="color:#${isQuote ? "bbb" : "999"}; font-size:0.9em;">(click to show)</span>`;

		placeholder.addEventListener("click", function (e) {
			e.stopPropagation();
			container.innerHTML = originalContent;
			delete container.dataset.phHidden;
			if (isQuote) hideBlockedQuotes(container);
		});

		return placeholder;
	}

	function hideBlockedQuotes(container) {
		container.querySelectorAll(".forumQuote").forEach((quote) => {
			const quoter = quote.previousElementSibling;
			if (!quoter?.classList.contains("forumQuoter")) return;

			const match = quoter.textContent.trim().match(/^(.+?)\s+said:$/i);
			if (!match) return;

			const username = match[1].trim();
			const shouldHide = isBlocked(username);
			const isHidden = quote.dataset.phHidden === "true";

			if (shouldHide && !isHidden) {
				const originalContent = quote.innerHTML;
				quote.dataset.phOriginal = originalContent; // Store original
				quote.innerHTML = "";
				quote.appendChild(
					createPlaceholder(username, true, originalContent, quote),
				);
				quote.dataset.phHidden = "true";
			} else if (!shouldHide && isHidden) {
				// User was unblocked - restore content
				quote.innerHTML = quote.dataset.phOriginal || quote.innerHTML; // Restore
				delete quote.dataset.phHidden;
				delete quote.dataset.phOriginal;
				hideBlockedQuotes(quote); // Re-check nested quotes
			} else if (!shouldHide) {
				// Check nested quotes in visible quotes
				hideBlockedQuotes(quote);
			}
		});
	}

	function updateVisibility() {
		document.querySelectorAll(".topic-reply").forEach((post) => {
			const authorLink = post.querySelector(".js-author a");
			const body = post.querySelector(".phml.msg-body");
			if (!authorLink || !body) return;

			const username = authorLink.textContent.trim();
			const shouldHide = isBlocked(username);
			const isHidden = body.dataset.phHidden === "true";

			if (shouldHide && !isHidden) {
				const originalContent = body.innerHTML;
				body.dataset.phOriginal = originalContent; // Store original
				body.innerHTML = "";
				body.appendChild(
					createPlaceholder(username, false, originalContent, body),
				);
				body.dataset.phHidden = "true";
			} else if (!shouldHide && isHidden) {
				// user was unblocked - restore content
				body.innerHTML = body.dataset.phOriginal || body.innerHTML; // Restore
				delete body.dataset.phHidden;
				delete body.dataset.phOriginal;
				hideBlockedQuotes(body); // Re-check for blocked quotes
			} else if (!shouldHide) {
				// attempt to hide quotes in visible posts
				hideBlockedQuotes(body);
			}
		});
	}

	// right click menu...
	let currentMenu = null;

	function removeMenu() {
		if (currentMenu) {
			currentMenu.remove();
			currentMenu = null;
		}
	}

	function createMenu(username, x, y) {
		removeMenu();

		currentMenu = document.createElement("div");
		currentMenu.style.cssText = `
            position: fixed; z-index: 999999;
            left: ${x}px; top: ${y}px;
            background: white; border: 1px solid #ccc;
            box-shadow: 2px 2px 10px rgba(0,0,0,0.4);
            min-width: 180px; padding: 4px 0;
            font-family: Arial, Helvetica, sans-serif; font-size: 13px;
            user-select: none; border-radius: 4px;
        `;

		const action = isBlocked(username) ? "Unblock" : "Block";
		const item = document.createElement("div");
		item.textContent = `${action} ${username}`;
		item.style.cssText =
			"padding: 8px 16px; cursor: pointer; white-space: nowrap;";
		item.addEventListener(
			"mouseover",
			() => (item.style.background = "#e6f0ff"),
		);
		item.addEventListener(
			"mouseout",
			() => (item.style.background = "white"),
		);
		item.addEventListener("click", (e) => {
			e.stopPropagation();
			toggleBlock(username);
			removeMenu();
		});

		currentMenu.appendChild(item);
		document.body.appendChild(currentMenu);
	}

	function outsideClickHandler(e) {
		if (currentMenu && !currentMenu.contains(e.target)) {
			removeMenu();
		}
	}

	// init the page with the users hidden
	updateVisibility();

	if (!window.phMenuCloseListenersAdded) {
		document.addEventListener("click", outsideClickHandler, true);
		document.addEventListener("contextmenu", outsideClickHandler, true);
		window.phMenuCloseListenersAdded = true;
	}

	document.addEventListener(
		"contextmenu",
		function (e) {
			const link = e.target.closest(".js-author a");
			if (link) {
				e.preventDefault();
				const username = link.textContent.trim();
				createMenu(username, e.clientX + 5, e.clientY + 5);
			}
		},
		false,
	);
})();