Initial commit

dangeru.user.js

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+// ==UserScript==
+// @name 		danger/u/ catalog
+// @namespace 	https://niles.xyz
+// @include 	http://boards.dangeru.us/*
+// @include 	https://boards.dangeru.us/*
+// @version		1.0
+// @grant 		GM_getValue
+// @grant 		GM_setValue
+// @run-at 		document-end
+// ==/UserScript==
+var started = false;
+var onload = function () {
+
+	// Only start once
+	if (started) {
+		return;
+	}
+	started = true;
+
+	var href = document.location.href;
+	href = href.substr(0, href.lastIndexOf("/"));
+	var board = href.substr(href.lastIndexOf("/") + 1);
+	var as = document.getElementsByTagName("a");
+	for (var i = 0; i < as.length; i++) {
+		var a = as[i];
+		if (a.href.indexOf("thread.php") < 0) {
+			continue;
+		}
+
+		var idx = a.href.indexOf("thread.php");
+		while (a.href[idx] != "=") idx++;
+		var id = a.href.substr(idx + 1);
+		var titlekey = board + ":" + id + ":title";
+		var saved_title = GM_getValue(titlekey, id);
+
+		if (a.innerHTML.trim().length === 0) {
+			a.innerHTML = "<span style='color: grey;'>Thread " + saved_title + " deleted</span>";
+			continue;
+		}
+		GM_setValue(titlekey, a.innerHTML.trim());
+		the_fn(board, a, id);
+	}
+
+};
+
+var the_fn = (function the_fn(board, a, id) {
+
+	var elem = document.createElement("span");
+	a.appendChild(elem);
+	elem.innerHTML = "Loading...";
+
+	var xmlHttp = new XMLHttpRequest();
+	xmlHttp.onreadystatechange = function() {
+		if(xmlHttp.readyState == 4 && xmlHttp.status == 200) {
+			var jsontext = xmlHttp.responseText;
+			jsontext = jsontext.replace(/(?:\r\n|\r|\n)/g, " ");
+			var idx = jsontext.indexOf("https://boards.dangeru.us/static");
+			while (jsontext[idx] != '}') idx++;
+			var b = jsontext.slice(0, idx) + '"' + jsontext.slice(idx);
+			var key = board + ":" + id;
+			var oldreplies = GM_getValue(key, 0);
+			try {
+				var json = JSON.parse(b);
+				var replies = json.replies.length;
+				if (oldreplies < replies) {
+					elem.innerHTML = "<span style='color:red;'>+" + (replies - oldreplies) + "</span>";
+					// we have to wrap this in a closure because otherwise it clicking any post would only update the last post processed in this loop
+					the_other_fn(key, replies, a, elem);
+				} else {
+					elem.innerHTML = "<span style='color: grey;'>" + replies + "</span>";
+				}
+
+			} catch (e) {
+				elem.innerHTML = "Error.";
+				console.log(e);
+			}
+		}
+	};
+	xmlHttp.open("GET", "https://boards.dangeru.us/api.php?type=thread&board=" + board + "&ln=250&thread=" + id, true); // true for asynchronous
+	xmlHttp.send(null);
+});
+
+var the_other_fn = (function(key, replies, a, elem) {
+	a.addEventListener("click", function() {
+		GM_setValue(key, replies);
+		elem.innerHTML = "<span style='color: grey;'>" + replies + "</span>";
+	});
+});
+
+
+// In chrome, the userscript runs in a sandbox, and will never see these events
+// Hence the run-at document-end
+//document.addEventListener('DOMContentLoaded', onload);
+//document.onload = onload;
+
+// One of these should work, and the started variable should prevent it from starting twice (I hope)
+function GM_main() {
+	onload();
+}
+onload();
+

readme.md

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+## Small userscript to browse danger/u/ more efficiently, based on lainmod
+
+It keeps track of how many replies a post has, and shows the number of new replies in red when there are new ones. It marks a post as fully read when you click on it in the list.
+
+It will also show deleted posts, and if you had seen the post before it was deleted it will tell you the title.
+
+![](ss.png)