BOT-296/Server Modules

TelepresenceBot/server-unit/core/botLocator.js

@@ -1,25 +1,39 @@
-function BotLocator(rooms) {
-    this.rooms = rooms;
-}
+module.exports = function (locationRooms) {
 
-BotLocator.prototype.locateFirstAvailableBotIn = function(room) {
-    var botsInRoom = this.rooms[room];
-
-    if(!botsInRoom) {
-        return;
+    const roomsThatMatch = function (toMatch) {
+        return function (room) {
+            return toMatch == room;
+        };
     }
 
-    for (socketId in botsInRoom.sockets) {
-        var socketsInBotRoom = this.rooms[socketId];
+    const roomsThatContainProperty = function (property) {
+        return function (roomName) {
+            return locationRooms[roomName].hasOwnProperty(property);
+        };
+    }
 
-        if(botNotConnectedToHuman(socketsInBotRoom)) {
-            return socketId;
-        }
+    const roomsThatAreNotAlreadyConnectedToOtherSockets = function () {
+        return function (roomName) {
+            return locationRooms[roomName].length == 1;
+        };
     }
-}
 
-function botNotConnectedToHuman(socketsInBotRoom) {
-    return  socketsInBotRoom.length === 1;
-}
+    const asEmptyBotRoom = function () {
+        return function (locationRoom) {
+            return Object.keys(locationRooms[locationRoom].sockets)
+                .filter(roomsThatContainProperty('length'))
+                .filter(roomsThatAreNotAlreadyConnectedToOtherSockets())
+                .pop();
+        };
+    }
 
-module.exports = BotLocator;
+    return {
+        locateFirstAvailableBotIn: function (locationRoom) {
+            return Object.keys(locationRooms)
+                .filter(roomsThatMatch(locationRoom))
+                .filter(roomsThatContainProperty('sockets'))
+                .map(asEmptyBotRoom())
+                .pop();
+        }
+    };
+};

TelepresenceBot/server-unit/core/clientType.js

@@ -1,15 +1,13 @@
-ClientType = {
-    BOT : "bot",
-    HUMAN : "human",
-    TEST : "test",
-    from : function(rawClientType) {
-        for(var key in this) {
-            if(ClientType[key] == rawClientType) {
+module.exports = ClientType = {
+    BOT: 'bot',
+    HUMAN: 'human',
+    TEST: 'test',
+    from: function (rawClientType) {
+        for (let key in this) {
+            if (ClientType[key] == rawClientType) {
                 return ClientType[key];
             }
         }
         return undefined;
     }
 }
-
-module.exports = ClientType;

TelepresenceBot/server-unit/core/disconnector.js

@@ -0,0 +1,53 @@
+module.exports = function Disconnector(rooms, connectedClients) {
+
+    const roomsThatMatch = function (toMatch) {
+        return function (room) {
+            return toMatch == room;
+        };
+    }
+
+    const roomsThatContainProperty = function (property) {
+        return function (roomName) {
+            return rooms[roomName].hasOwnProperty(property);
+        };
+    }
+
+    const thosePresentIn = function (objectToSearch) {
+        return function (key) {
+            return objectToSearch[key]
+        };
+    }
+
+    const asConnectedClient = function () {
+        return function (key) {
+            return connectedClients[key];
+        };
+    }
+
+    const connectedClientsThatContainProperty = function (property) {
+        return function (connectedClient) {
+            return connectedClient.hasOwnProperty(property);
+        }
+    }
+
+    const disconnectClient = function () {
+        return function (connectedClient) {
+            connectedClient.disconnect();
+        }
+    }
+
+    return {
+        disconnectRoom: function (roomName) {
+            Object.keys(rooms)
+                .filter(roomsThatMatch(roomName))
+                .filter(roomsThatContainProperty('sockets'))
+                .map(function (roomKey) {
+                    return Object.keys(rooms[roomKey].sockets)
+                        .filter(thosePresentIn(connectedClients))
+                        .map(asConnectedClient())
+                        .filter(connectedClientsThatContainProperty('disconnect'))
+                        .every(disconnectClient());
+                });
+        }
+    };
+}

TelepresenceBot/server-unit/core/mover.js

@@ -0,0 +1,17 @@
+module.exports = function Mover(clientsAndRooms, emitter) {
+
+    const emitToRoom = function (direction) {
+        return function (room) {
+            emitter.to(room).emit('direction', direction);
+        }
+    }
+
+    return {
+        moveIn: function (clientId, direction) {
+            const rooms = clientsAndRooms[clientId];
+
+            Object.keys(rooms || {})
+                .every(emitToRoom(direction));
+        }
+    };
+}

TelepresenceBot/server-unit/core/observer.js

@@ -0,0 +1,7 @@
+module.exports = function Observer() {
+    return {
+        notify: function (eventName, eventData) {
+            return true;
+        }
+    };
+}

TelepresenceBot/server-unit/core/public/js/connect.js

@@ -1,17 +1,24 @@
-var intervalId;
+const intervalId;
+
+const socketOptions ={
+    transports: ['websocket'],
+    'force new connection': true,
+    query: 'clientType=human&room=London'
+};
+
+const socket = io(socketOptions);
 
 $(document).ready(function(){
 
     $("input").mousedown(function(){
         console.log("mouseDown");
-        var message = $(this).val();
+        const message = $(this).val();
         intervalId = setInterval(function() {
             sendMessage(message);
         }, 100);
     });
 
     function sendMessage(message) {
-        var socket = io();
         socket.emit('chat message', message);
         $('#messages').append($('<li>').text(message));
     }

TelepresenceBot/server-unit/core/router.js

@@ -0,0 +1,28 @@
+const ClientType = require('./clientType.js')
+
+module.exports = function Router(botLocator) {
+    return {
+        route: function (query, next) {
+            const roomName = query.room;
+            const rawClientType = query.clientType;
+            const clientType = ClientType.from(rawClientType);
+
+            switch (clientType) {
+                case ClientType.BOT:
+                    return next();
+                case ClientType.HUMAN:
+                    const availableBot = botLocator.locateFirstAvailableBotIn(roomName);
+
+                    if (availableBot) {
+                        query.room = availableBot;
+                        return next();
+                    } else {
+                        return next(new Error('No bots available'));
+                    }
+
+                default:
+                    return next(new Error('Unrecognised clientType: ' + rawClientType));
+            }
+        }
+    };
+}

TelepresenceBot/server-unit/core/server.js

@@ -1,100 +1,4 @@
-var io = require('socket.io').listen(5000);
-var ClientType = require("./clientType.js");
-var LoggingClient = require("./loggingClient.js");
-var BotLocator = require("./botLocator.js");
+const ServerCreator = require('./serverCreator');
 
-var testClient = new LoggingClient();
-var botLocator = new BotLocator(io.sockets.adapter.rooms);
-
-io.use(function(client, next){
-
-    var roomName = client.handshake.query.room;
-    var rawClientType = client.handshake.query.clientType;
-    var clientType = ClientType.from(rawClientType);
-
-    switch(clientType) {
-        case ClientType.TEST:
-        case ClientType.BOT:
-            return next();
-        case ClientType.HUMAN:
-            var human = client;
-            var availableBot = botLocator.locateFirstAvailableBotIn(roomName);
-
-            if(availableBot) {
-                human.handshake.query.room = availableBot;
-                return next();
-            } else {
-                return next(new Error('No bots available'));
-            }
-        default:
-            return next(new Error('Unrecognised clientType: ' + rawClientType));
-
-    }
-
-});
-
-io.sockets.on('connection', function (client) {
-
-    var roomName = client.handshake.query.room;
-    var rawClientType = client.handshake.query.clientType;
-    var clientType = ClientType.from(rawClientType);
-
-    switch(clientType) {
-        case ClientType.HUMAN:
-            client.join(roomName);
-            testClient.emit('connected_human', asRoomsWithSocketIds());
-            break;
-        case ClientType.BOT:
-            client.join(roomName);
-            testClient.emit('connected_bot', asRoomsWithSocketIds());
-            break;
-        case ClientType.TEST:
-            console.log('switching test client');
-            testClient = new LoggingClient(client);
-            testClient.emit('connected', asRoomsWithSocketIds());
-            break;
-        default:
-            throw 'Unexpected rawClientType: ' + clientType;
-    }
-
-    client.on('disconnect', function() {
-        disconnectRoom(client.id);
-        testClient.emit('disconnected_human', asRoomsWithSocketIds());
-        testClient.emit('disconnected_bot', asRoomsWithSocketIds());
-    });
-
-    client.on('move_in', function(direction) {
-        var rooms = Object.keys(io.sockets.adapter.sids[client.id]);
-        for(var i = 0; i < rooms.length; i++) {
-            io.to(rooms[i]).emit('direction', direction);
-            testClient.emit('direction', direction);
-        }
-    });
-});
-
-function disconnectRoom(name) {
-    var room = io.sockets.adapter.rooms[name];
-
-    if(!room) {
-        return;
-    }
-
-    var clients = io.sockets.adapter.rooms[name].sockets;
-
-    for(var client in clients) {
-        var connectedClient = io.sockets.connected[client];
-        connectedClient.disconnect();
-    }
-}
-
-function asRoomsWithSocketIds() {
-    var roomNames = Object.keys(io.sockets.adapter.rooms);
-    var roomsWithSockets = {};
-
-    for(var i = 0; i < roomNames.length; i++) {
-        var room = io.sockets.adapter.rooms[roomNames[i]];
-        roomsWithSockets[roomNames[i]] = Object.keys(room.sockets);
-    }
-
-    return roomsWithSockets;
-}
+const serverCreator = new ServerCreator();
+serverCreator.create();