introducing option to disable chat message editing/deletion

package.json

@@ -62,8 +62,8 @@
     "nodebb-plugin-spam-be-gone": "0.4.10",
     "nodebb-rewards-essentials": "0.0.9",
     "nodebb-theme-lavender": "3.0.15",
-    "nodebb-theme-persona": "4.1.67",
-    "nodebb-theme-vanilla": "5.1.45",
+    "nodebb-theme-persona": "4.1.68",
+    "nodebb-theme-vanilla": "5.1.46",
     "nodebb-widget-essentials": "2.0.12",
     "nodemailer": "2.6.4",
     "nodemailer-sendmail-transport": "1.0.0",

src/controllers/api.js

@@ -42,6 +42,7 @@ apiController.getConfig = function (req, res, next) {
 	config.allowTopicsThumbnail = parseInt(meta.config.allowTopicsThumbnail, 10) === 1;
 	config.usePagination = parseInt(meta.config.usePagination, 10) === 1;
 	config.disableChat = parseInt(meta.config.disableChat, 10) === 1;
+	config.disableChatMessageEditing = parseInt(meta.config.disableChatMessageEditing, 10) === 1;
 	config.socketioTransports = nconf.get('socket.io:transports') || ['polling', 'websocket'];
 	config.websocketAddress = nconf.get('socket.io:address') || '';
 	config.maxReconnectionAttempts = meta.config.maxReconnectionAttempts || 5;

src/messaging/edit.js

@@ -45,7 +45,9 @@ module.exports = function (Messaging) {
 	};
 
 	Messaging.canEdit = function (messageId, uid, callback) {
-		if (parseInt(meta.config.disableChat) === 1) {
+		if (parseInt(meta.config.disableChat, 10) === 1) {
+			return callback(null, false);
+		} else if (parseInt(meta.config.disableChatMessageEditing, 10) === 1) {
 			return callback(null, false);
 		}
 

src/views/admin/settings/chat.tpl

@@ -13,6 +13,16 @@
 			</div>
 		</div>
 
+		<div class="form-group">
+			<div class="checkbox">
+				<label class="mdl-switch mdl-js-switch mdl-js-ripple-effect">
+					<input type="checkbox" class="mdl-switch__input" id="disableChatMessageEditing" data-field="disableChatMessageEditing">
+					<span class="mdl-switch__label"><strong>Disable chat message editing/deletion</strong></span>
+				</label>
+			</div>
+			<p class="help-block">Administrators and global moderators are exempt from this restriction</p>
+		</div>
+
 		<div class="form-group">
 			<label>Maximum length of chat messages</label>
 			<input type="text" class="form-control" value="1000" data-field="maximumChatMessageLength">