- Reduce margin between checkboxes for matrix-receive node

- matrix-send-message node can now be used to reply in a thread (closes #104)
- matrix-receive node now returns msg.mentions for easier access to who was mentioned in message
- matrix-receive node now returns boolean msg.isThread based on whether the message is a thread reply or not

src/matrix-receive.html

@@ -45,7 +45,7 @@
     <div class="form-row" style="margin-left: 100px;margin-top:10px;font-weight:bold;">
         Timeline event filters
     </div>
-    <div class="form-row">
+    <div class="form-row" style="margin-bottom:0;">
         <input
             type="checkbox"
             id="node-input-acceptText"
@@ -55,7 +55,7 @@
             Accept text <code style="text-transform: none;">m.text</code>
         </label>
     </div>
-    <div class="form-row">
+    <div class="form-row" style="margin-bottom:0;">
         <input
                 type="checkbox"
                 id="node-input-acceptEmotes"
@@ -65,7 +65,7 @@
             Accept emotes <code style="text-transform: none;">m.emote</code>
         </label>
     </div>
-    <div class="form-row">
+    <div class="form-row" style="margin-bottom:0;">
         <input
                 type="checkbox"
                 id="node-input-acceptStickers"
@@ -75,7 +75,7 @@
             Accept stickers <code style="text-transform: none;">m.sticker</code>
         </label>
     </div>
-    <div class="form-row">
+    <div class="form-row" style="margin-bottom:0;">
         <input
             type="checkbox"
             id="node-input-acceptReactions"
@@ -85,7 +85,7 @@
             Accept reactions <code style="text-transform: none;">m.reaction</code>
         </label>
     </div>
-    <div class="form-row">
+    <div class="form-row" style="margin-bottom:0;">
         <input
             type="checkbox"
             id="node-input-acceptFiles"
@@ -95,7 +95,7 @@
             Accept files <code style="text-transform: none;">m.file</code>
         </label>
     </div>
-    <div class="form-row">
+    <div class="form-row" style="margin-bottom:0;">
         <input
                 type="checkbox"
                 id="node-input-acceptAudio"
@@ -105,7 +105,7 @@
             Accept files <code style="text-transform: none;">m.audio</code>
         </label>
     </div>
-    <div class="form-row">
+    <div class="form-row" style="margin-bottom:0;">
         <input
             type="checkbox"
             id="node-input-acceptImages"
@@ -115,7 +115,7 @@
             Accept images <code style="text-transform: none;">m.image</code>
         </label>
     </div>
-    <div class="form-row">
+    <div class="form-row" style="margin-bottom:0;">
         <input
                 type="checkbox"
                 id="node-input-acceptVideos"
@@ -125,7 +125,7 @@
             Accept videos <code style="text-transform: none;">m.video</code>
         </label>
     </div>
-    <div class="form-row">
+    <div class="form-row" style="margin-bottom:0;">
         <input
                 type="checkbox"
                 id="node-input-acceptLocations"

src/matrix-receive.js

@@ -1,3 +1,4 @@
+const {RelationType} = require("matrix-js-sdk");
 module.exports = function(RED) {
     function MatrixReceiveMessage(n) {
         RED.nodes.createNode(this, n);

src/matrix-send-message.html

@@ -6,6 +6,7 @@
         outputLabels: ["success", "error"],
         inputs:1,
         outputs:2,
+        paletteLabel: 'Send Message',
         defaults: {
             name: { value: null },
             server: { type: "matrix-server-config" },
@@ -13,12 +14,24 @@
             message: { value: null },
             messageType: { value: 'm.text' },
             messageFormat: { value: '' },
-            replaceMessage : { value: false }
+            replaceMessage : { value: false },
+            threadReplyType: { value: "msg" },
+            threadReplyValue: { value: "isThread" },
         },
         label: function() {
             return this.name || "Send Message";
         },
-        paletteLabel: 'Send Message'
+        oneditprepare: function() {
+            $("#node-input-threadReply").typedInput({
+                types:['msg','flow','global','bool'],
+            })
+                .typedInput('value', this.threadReplyValue || "isThread")
+                .typedInput('type', this.threadReplyType || "msg");
+        },
+        oneditsave: function() {
+            this.threadReplyType = $("#node-input-threadReply").typedInput('type');
+            this.threadReplyValue = $("#node-input-threadReply").typedInput('value');
+        },
     });
 </script>
 
@@ -72,6 +85,11 @@
         It's recommended to use m.notice for bots because the message will render in a lighter text (at least in Element client) for users to distinguish bot and real user messages.
     </div>
 
+    <div class="form-row">
+        <label for="node-input-threadReply"><i class="fa fa-commenting-o"></i> Thread Reply</label>
+        <input type="text" id="node-input-threadReply">
+    </div>
+
     <div class="form-row">
         <label for="node-input-messageFormat">
             Message Format

src/matrix-send-message.js

@@ -13,6 +13,8 @@ module.exports = function(RED) {
         this.messageFormat = n.messageFormat;
         this.replaceMessage = n.replaceMessage;
         this.message = n.message;
+        this.threadReplyType = n.threadReplyType || null;
+        this.threadReplyValue = n.threadReplyValue || null;
 
         // taken from https://github.com/matrix-org/synapse/blob/master/synapse/push/mailer.py
         this.allowedTags = [
@@ -67,8 +69,27 @@ module.exports = function(RED) {
         });
 
         node.on("input", function (msg) {
+            function getToValue(msg, type, property) {
+                let value = property;
+                if (type === "msg") {
+                    value = RED.util.getMessageProperty(msg, property);
+                } else if ((type === 'flow') || (type === 'global')) {
+                    try {
+                        value = RED.util.evaluateNodeProperty(property, type, node, msg);
+                    } catch(e2) {
+                        throw new Error("Invalid value evaluation");
+                    }
+                } else if(type === "bool") {
+                    value = (property === 'true');
+                } else if(type === "num") {
+                    value = Number(property);
+                }
+                return value;
+            }
+
             let msgType = node.messageType,
-                msgFormat = node.messageFormat;
+                msgFormat = node.messageFormat,
+                threadReply = getToValue(msg, node.threadReplyType, node.threadReplyValue);
 
             if (!node.server || !node.server.matrixClient) {
                 node.warn("No matrix server selected");
@@ -143,6 +164,25 @@ module.exports = function(RED) {
                         event_id: msg.eventId
                     };
                     content['body'] = ' * ' + content['body'];
+                } else if(threadReply) {
+                    // if incoming message is a reply to a thread we fetch the thread parent from the m.relates_to property
+                    // otherwise fallback to msg.eventId
+                    console.log(msg);
+                    console.log(msg?.content?.['m.relates_to']?.rel_type);
+                    console.log(msg?.content?.['m.relates_to']?.event_id);
+                    let threadParent = (msg?.content?.['m.relates_to']?.rel_type === RelationType.Thread ? msg?.content?.['m.relates_to']?.event_id : null) || msg.eventId;
+                    if(threadParent) {
+                        content["m.relates_to"] = {
+                            "rel_type": RelationType.Thread,
+                            "event_id": threadParent,
+                            "is_falling_back": true,
+                        };
+                        if(msg.eventId !== threadParent) {
+                            content["m.relates_to"]["m.in_reply_to"] = {
+                                "event_id": msg.eventId
+                            };
+                        }
+                    }
                 }
             }
 

src/matrix-server-config.js

@@ -1,3 +1,5 @@
+const {RelationType} = require("matrix-js-sdk");
+
 global.Olm = require('olm');
 const fs = require("fs-extra");
 const sdk = require("matrix-js-sdk");
@@ -231,10 +233,12 @@ module.exports = function(RED) {
                     type         : (event.getContent()['msgtype'] || event.getType()) || null,
                     payload      : (event.getContent()['body'] || event.getContent()) || null,
                     isDM         : isDmRoom(room),
+                    isThread     : event.getContent()?.['m.relates_to']?.rel_type === RelationType.Thread,
+                    mentions     : event.getContent()["m.mentions"] || null,
                     userId       : event.getSender(),
                     topic        : event.getRoomId(),
                     eventId      : event.getId(),
-                    event     : event
+                    event        : event,
                 };
 
                 node.log("Received" + (msg.encrypted ? ' encrypted' : '') +" timeline event [" + msg.type + "]: (" + room.name + ") " + event.getSender() + " :: " + msg.content.body + (toStartOfTimeline ? ' [PAGINATED]' : ''));