From f57dd0d13d4eb5db8f741ee31a9c371a49da7821 Mon Sep 17 00:00:00 2001
From: Glorfindel <gerwindegroot@gmail.com>
Date: Sun, 28 Jul 2019 18:46:17 +0200
Subject: [PATCH] Archivist v0.1

---
 archivist/archivist.user.js | 104 ++++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 archivist/archivist.user.js

diff --git a/archivist/archivist.user.js b/archivist/archivist.user.js
new file mode 100644
index 0000000..bc5215b
--- /dev/null
+++ b/archivist/archivist.user.js
@@ -0,0 +1,104 @@
+// ==UserScript==
+// @name        Stack Exchange Archivist
+// @namespace   https://github.com/Glorfindel83/
+// @description Adds a button to archive all external links and images in a post
+// @author      Glorfindel
+// @updateURL   https://raw.githubusercontent.com/Glorfindel83/SE-Userscripts/master/archivist/archivist.user.js
+// @downloadURL https://raw.githubusercontent.com/Glorfindel83/SE-Userscripts/master/archivist/archivist.user.js
+// @version     0.1
+// @match       *://*.stackexchange.com/questions/*
+// @match       *://*.stackoverflow.com/questions/*
+// @match       *://*.superuser.com/questions/*
+// @match       *://*.serverfault.com/questions/*
+// @match       *://*.askubuntu.com/questions/*
+// @match       *://*.stackapps.com/questions/*
+// @match       *://*.mathoverflow.net/questions/*
+// @exclude     *://*.stackexchange.com/questions/ask
+// @exclude     *://*.stackoverflow.com/questions/ask
+// @exclude     *://*.superuser.com/questions/ask
+// @exclude     *://*.serverfault.com/questions/ask
+// @exclude     *://*.askubuntu.com/questions/ask
+// @exclude     *://*.stackapps.com/questions/ask
+// @exclude     *://*.mathoverflow.net/questions/ask
+// @grant       none
+// ==/UserScript==
+
+(function () {
+  "use strict";
+  
+  $("a.short-link").each(function() {
+    let shareButton = $(this);
+
+    // Find links & images
+    let post = shareButton.parents("div.question")[0];
+    if (post == null) {
+      post = shareButton.parents("div.answer")[0];
+    }
+    let body = $(post).find("div.post-text")[0];
+    var images = [];
+    $(body).find("img").each(function() {
+      let tmp = document.createElement('a');
+      tmp.href = this.src;
+      if (shouldArchive(tmp.hostname)) {
+        images.push(this.src);
+      }
+    });
+    var links = [];
+    $(body).find("a").each(function() {
+      if (shouldArchive(this.hostname) && !images.includes(this.href)) {
+        links.push(this.href);
+      }
+    });
+    // Are there any links to archive?
+    let disabled = links.length == 0 && images.length == 0;
+    let hoverMessage = disabled ? 'No external links or images found.' : 'Archive ' + getMessage(links, images, true);
+
+    // Add button
+    let menu = shareButton.parent();
+    menu.append($('<span class="lsep">|</span>'));
+    let button = $('<a href="#" style="' + (disabled ? "color: #BBB" : "") + '" title="' + hoverMessage + '">archive</a>');
+    menu.append(button);
+    button.click(function(event) {
+      event.preventDefault();
+      if (disabled) {
+        alert(hoverMessage);
+        return;
+      }
+      
+      // TODO: overview of age of last snapshots, with checkmarks
+      let message = getMessage(links, images, false);
+      if (!confirm('Are you sure you want to archive ' + message + ' in this post?'))
+        return;
+    
+      links.forEach(function(link) {
+        // only works properly if the browser is configured to
+        // allow stackexchange.com to open (multiple) popups
+        window.open("https://web.archive.org/save/" + link, "_blank");
+      });
+    });
+  });  
+})();
+
+function getMessage(links, images, use1) {
+  let linksMessage = getMessagePart("link", links.length, use1);
+  let imagesMessage = getMessagePart("image", images.length, use1);
+  return linksMessage + (linksMessage != "" && imagesMessage != "" ? " and " : "") + imagesMessage;  
+}
+
+function getMessagePart(type, count, use1) {
+  if (count == 0)
+    return "";
+  return (count == 1 && use1 ? "the" : count) + " external " + type + (count == 1 ? "" : "s");
+}
+
+function shouldArchive(hostname) {
+  // Only archive 'external' links
+  return !hostname.contains("stackexchange.com") &&
+         !hostname.contains("stackoverflow.com") &&
+         !hostname.contains("superuser.com") &&
+         !hostname.contains("serverfault.com") &&
+         !hostname.contains("askubuntu.com") &&
+         !hostname.contains("mathoverflow.net") &&
+         !hostname.contains("stackapps.com") &&
+         !hostname.contains("stack.imgur.com");
+}
\ No newline at end of file