Make examples/node/app an actual app rather than the usage example.

examples/node/app.js

@@ -1,14 +1,140 @@
 "use strict";
-console.log("Loading node sdk");
 
-var matrix = require("matrix-js-sdk");
+var myUserId = "@example:localhost";
+var myAccessToken = "QGV4YW1wbGU6bG9jYWxob3N0.qPEvLuYfNBjxikiCjP";
+var sdk = require("matrix-js-sdk");
+var matrixClient = sdk.createClient({
+    baseUrl: "http://localhost:8008",
+    accessToken: myAccessToken,
+    userId: myUserId
+});
 
-var client = matrix.createClient("http://matrix.org");
-client.publicRooms(function (err, data) {
-    if (err) {
-        console.error("Error: %s", JSON.stringify(err));
+// Data structures
+var roomList = [];
+var viewingRoom = null;
+var numMessagesToShow = 20;
+
+// Reading from stdin
+var readline = require("readline");
+var rl = readline.createInterface({
+    input: process.stdin,
+    output: process.stdout,
+    terminal: false
+});
+rl.on('line', function(line) {
+    if (line.indexOf("enter ") === 0 && !viewingRoom) {
+        var roomIndex = line.split(" ")[1];
+        viewingRoom = roomList[roomIndex];
+        if (viewingRoom.getMember(myUserId).membership === "invite") {
+            // join the room first
+            matrixClient.joinRoom(viewingRoom.roomId).done(function() {
+                printMessages();
+            }, function(err) {
+                console.log("Error: %s", err);
+            });
+        }
+        else {
+            printMessages();
+        }
+    }
+    else if (line === "/exit" && viewingRoom) {
+        viewingRoom = null;
+        printRoomList();
+    }
+    else if (line === "/members" && viewingRoom) {
+        printMemberList();
+    }
+    else if (viewingRoom) {
+        matrixClient.sendTextMessage(viewingRoom.roomId, line).done(function() {
+            console.log('\x1B[2J'); // clear console
+            printMessages();
+        }, function(err) {
+            console.log("Error: %s", err);
+        });
+    }
+});
+// ==== END User input
+
+// show the room list after syncing.
+matrixClient.on("syncComplete", function() {
+    roomList = matrixClient.getRooms();
+    printRoomList();
+});
+
+// print incoming messages.
+matrixClient.on("Room.timeline", function(event, room, toStartOfTimeline) {
+    if (toStartOfTimeline) {
+        return; // don't print paginated results
+    }
+    if (event.getType() !== "m.room.message") {
+        return; // only print messages
+    }
+    if (!viewingRoom || viewingRoom.roomId !== room.roomId) {
+        return; // not viewing a room or viewing the wrong room.
+    }
+    printLine(event);
+});
+
+function printRoomList() {
+    console.log("Room List:");
+    for (var i = 0; i < roomList.length; i++) {
+        console.log(
+            "[%s] %s (%s members)",
+            i, roomList[i].name, roomList[i].currentState.getMembers().length
+        );
+    }
+    console.log("Enter a room by typing 'enter <index>', e.g. 'enter 5'");
+    console.log("Leave a room by typing '/exit'.");
+    console.log("Show a room member list by typing '/members'");
+}
+
+function printMessages() {
+    if (!viewingRoom) {
+        printRoomList();
         return;
     }
-	console.log("data %s", JSON.stringify(data).substring(0, 200));
-    console.log("Congratulations! The SDK is working in Node.js!");
-});
+    console.log('\x1B[2J'); // clear console
+    var mostRecentMessages = viewingRoom.timeline.slice(numMessagesToShow * -1);
+    for (var i = 0; i < mostRecentMessages.length; i++) {
+        if (mostRecentMessages[i].getType() !== "m.room.message") {
+            continue;
+        }
+        printLine(mostRecentMessages[i]);
+    }
+}
+
+function printMemberList() {
+    if (!viewingRoom) {
+        printRoomList();
+        return;
+    }
+    var members = viewingRoom.currentState.getMembers();
+    // sorted based on name.
+    members.sort(function(a, b) {
+        if (a.name > b.name) {
+            return -1;
+        }
+        if (a.name < b.name) {
+            return 1;
+        }
+        return 0;
+    });
+    console.log(viewingRoom.name);
+    console.log(new Array(viewingRoom.name.length + 1).join("-"));
+    viewingRoom.currentState.getMembers().forEach(function(member) {
+        if (!member.membership) {
+            return;
+        }
+        var membershipWithPadding = (
+            member.membership + new Array(10 - member.membership.length).join(" ")
+        );
+        console.log("%s :: %s", membershipWithPadding, member.name);
+    });
+}
+
+function printLine(event) {
+    // TODO: Update with event.sender when implemented.
+    console.log("%s :: %s", event.getSender(), event.getContent().body);
+}
+   
+matrixClient.startClient(numMessagesToShow);  // messages for each room.