designed and developed chat application

Author: rajkumardev97

README.md

@@ -1,2 +1,15 @@
 # reactjs-express-nodejs-mongo-socket.io-Community_chat_with_database_saving_and_private_chat_wo_db_sa
+
 reactjs-express-nodejs-mongo-socket.io-Community_chat_with_database_saving_and_private_chat_without_db_saving
+
+#My Server Chat is the chatting based application where user can do chatting in community by pick up unique name and proceed to the app and user can also see the online users where they can do private messaging to each others.
+
+#start client and server
+
+> npm run dev
+
+#local mongodb url: mongodb://localhost/mychatserver
+
+#client run on : http://localhost:3000/
+
+#node and socket.io server run on : http://localhost:5005/

SocketManager.js

@@ -0,0 +1,290 @@
+const express = require("express");
+const router = express.Router();
+const bcrypt = require("bcryptjs");
+const jwt = require("jsonwebtoken");
+var fs = require("fs");
+const passport = require("passport");
+
+var dateFormat = require("dateformat");
+
+const nodemailer = require("nodemailer");
+
+const multer = require("multer");
+const path = require("path");
+
+// Load User model
+const User = require("./models/User");
+// Load Matcheduserlist model
+const Matcheduserlist = require("./models/Matcheduserlist");
+// Load Communitychats model
+const Communitychats = require("./models/Communitychats");
+
+const io = require("./mychatserver.js").io;
+
+const {
+  VERIFY_USER,
+  USER_CONNECTED,
+  USER_DISCONNECTED,
+  LOGOUT,
+  COMMUNITY_CHAT,
+  COMMUNITY_CHAT_HISTORY,
+  MESSAGE_RECIEVED,
+  MESSAGE_SENT,
+  TYPING,
+  PRIVATE_MESSAGE
+} = require("./client/src/Events");
+
+const {
+  createUser,
+  createMessage,
+  createChat
+} = require("./client/src/Factories");
+
+let connectedUsers = {};
+
+let communityChat = createChat({ isCommunity: true });
+
+module.exports = function(socket) {
+  // console.log('\x1bc'); //clears console
+
+  console.log("New user connected where Socket Id:" + socket.id);
+
+  let sendMessageToChatFromUser;
+
+  let sendTypingFromUser;
+
+  //listen on VERIFY_USER
+  //Verify Username
+  socket.on(VERIFY_USER, (nickname, callback) => {
+    console.log("listen on VERIFY_USER");
+    if (isUser(connectedUsers, nickname)) {
+      callback({ isUser: true, user: null });
+    } else {
+      callback({
+        isUser: false,
+        user: createUser({ name: nickname, socketId: socket.id })
+      });
+    }
+  });
+
+  //In order to send an event to everyone, Socket.IO gives us the io.emit
+
+  //listen on USER_CONNECTED
+  //User Connects with username
+  socket.on(USER_CONNECTED, user => {
+    console.log("listen on USER_CONNECTED");
+    user.socketId = socket.id;
+    connectedUsers = addUser(connectedUsers, user);
+    socket.user = user;
+
+    sendMessageToChatFromUser = sendMessageToChat(user.name);
+    sendTypingFromUser = sendTypingToChat(user.name);
+
+    //it will broadcast the new user connected list to all the connected users from our socket server in case always when new user is connected
+
+    //thats why in the section of connected user left tab users list is always up to date
+    io.emit(USER_CONNECTED, connectedUsers);
+    console.log(connectedUsers);
+  });
+
+  socket.on(COMMUNITY_CHAT_HISTORY, callback => {
+    console.log("listen on COMMUNITY_CHAT_HISTORY");
+
+    Communitychats.find({}).then(communitychats => {
+      //res.json(communitychats);
+      console.log("communitychats history found!!");
+      callback(communitychats);
+    });
+  });
+
+  socket.on(COMMUNITY_CHAT, callback => {
+    console.log("listen on COMMUNITY_CHAT");
+    console.log(communityChat);
+    callback(communityChat);
+  });
+
+  //Each socket also fires a special disconnect event
+  //User disconnects
+  socket.on("disconnect", () => {
+    console.log("listen on disconnect");
+    if ("user" in socket) {
+      console.log(
+        "disconnected user is remove from our socket connectedUsers object list"
+      );
+
+      connectedUsers = removeUser(connectedUsers, socket.user.name);
+
+      console.log("here we broadcast final connected users list");
+
+      io.emit(USER_DISCONNECTED, connectedUsers);
+      console.log("Final Connected Users are : ", connectedUsers);
+    }
+  });
+
+  //listen on LOGOUT
+  //User logout
+  socket.on(LOGOUT, () => {
+    console.log("listen on LOGOUT");
+
+    connectedUsers = removeUser(connectedUsers, socket.user.name);
+    io.emit(USER_DISCONNECTED, connectedUsers);
+    console.log("Disconnect", connectedUsers);
+  });
+
+  //Get Community Chat
+  socket.on(COMMUNITY_CHAT, callback => {
+    console.log("listen on COMMUNITY_CHAT");
+    console.log(communityChat);
+    callback(communityChat);
+  });
+
+  //listen on MESSAGE_SENT
+  socket.on(MESSAGE_SENT, ({ chatId, message }) => {
+    console.log("listen on MESSAGE_SENT");
+    console.log("chatid is : " + chatId + " where message is : " + message);
+
+    sendMessageToChatFromUser(chatId, message);
+  });
+
+  socket.on(TYPING, ({ chatId, isTyping }) => {
+    console.log("listen on TYPING");
+
+    sendTypingFromUser(chatId, isTyping);
+  });
+
+  socket.on(PRIVATE_MESSAGE, ({ reciever, sender, activeChat }) => {
+    console.log("listen on PRIVATE_MESSAGE");
+    if (reciever in connectedUsers) {
+      console.log("reciever is : " + reciever + " and sender is : " + sender);
+
+      const recieverSocket = connectedUsers[reciever].socketId;
+
+      console.log("recieverSocket is : " + recieverSocket);
+
+      if (activeChat === null || activeChat.id === communityChat.id) {
+        console.log(
+          "activeChat === null || activeChat.id === communityChat.id"
+        );
+
+        const newChat = createChat({
+          name: `${reciever}&${sender}`,
+          users: [reciever, sender]
+        });
+
+        // sending to individual socketid (private message)
+        //eg: socket.to(socket.id).emit('hey', 'I just met you');
+
+        //newChat means freash chats of two private users
+
+        console.log("private fresh chat is : " + newChat.id);
+
+        socket.to(recieverSocket).emit(PRIVATE_MESSAGE, newChat);
+        socket.emit(PRIVATE_MESSAGE, newChat);
+      } else {
+        //activeChat means prev chats of two private users
+        console.log("activeChat || activeChat.id != communityChat.id");
+
+        socket.to(recieverSocket).emit(PRIVATE_MESSAGE, activeChat);
+      }
+    }
+  });
+};
+/*
+ * Returns a function that will take a chat id and a boolean isTyping
+ * and then emit a broadcast to the chat id that the sender is typing
+ * @param sender {string} username of sender
+ * @return function(chatId, message)
+ */
+function sendTypingToChat(user) {
+  return (chatId, isTyping) => {
+    io.emit(`${TYPING}-${chatId}`, { user, isTyping });
+  };
+}
+
+/*
+ * Returns a function that will take a chat id and message
+ * and then emit a broadcast to the chat id.
+ * @param sender {string} username of sender
+ * @return function(chatId, message)
+ */
+function sendMessageToChat(sender) {
+  return (chatId, message) => {
+    io.emit(
+      `${MESSAGE_RECIEVED}-${chatId}`, //MESSAGE_RECIEVED event
+      createMessage({ message, sender }),
+      sendMessageToChatSAVE(chatId, message, sender)
+    );
+  };
+}
+
+function sendMessageToChatSAVE(chatId, message, sender) {
+  //console.log("communityChat.isCommunity is : " + communityChat.id);
+
+  //console.log("chatId inside sendMessageToChatSAVE is : " + chatId);
+  if (chatId === communityChat.id) {
+    //if chatId equal to community chat id
+    console.log("we are saving communityChat messages!!");
+    console.log("here we save chat in database!!");
+    const newCommunitychats = new Communitychats({
+      id: chatId,
+      time: getTime(new Date(Date.now())),
+      message: message,
+      sender
+    });
+
+    newCommunitychats
+      .save()
+      .then(newCommunitychats => {
+        console.log("chat saved successfully!!");
+      }) //here we send back new user register information as a response from the success server side
+      .catch(err => {
+        console.log("chat saved error is :" + err);
+      });
+  } else {
+    console.log("we cannot save private message!!");
+
+    //console.log("chatId inside sendMessageToChatSAVE is : " + chatId);
+  }
+}
+
+/*
+ * Adds user to list passed in.
+ * @param userList {Object} Object with key value pairs of users
+ * @param user {User} the user to added to the list.
+ * @return userList {Object} Object with key value pairs of Users
+ */
+function addUser(userList, user) {
+  let newList = Object.assign({}, userList);
+  newList[user.name] = user;
+  return newList;
+}
+
+/*
+ * Removes user from the list passed in.
+ * @param userList {Object} Object with key value pairs of Users
+ * @param username {string} name of user to be removed
+ * @return userList {Object} Object with key value pairs of Users
+ */
+function removeUser(userList, username) {
+  let newList = Object.assign({}, userList);
+  delete newList[username];
+  return newList;
+}
+
+/*
+ * Checks if the user is in list passed in.
+ * @param userList {Object} Object with key value pairs of Users
+ * @param username {String}
+ * @return userList {Object} Object with key value pairs of Users
+ */
+function isUser(userList, username) {
+  return username in userList;
+}
+
+/*
+ *	@param date {Date}
+ *	@return a string represented in 24hr time i.e. '11:30', '19:30'
+ */
+const getTime = date => {
+  return `${date.getHours()}:${("0" + date.getMinutes()).slice(-2)}`;
+};

client/.gitignore

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+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*

client/README.md

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+This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app).
+
+## Available Scripts
+
+In the project directory, you can run:
+
+### `npm start`
+
+Runs the app in the development mode.<br>
+Open [http://localhost:3000](http://localhost:3000) to view it in the browser.
+
+The page will reload if you make edits.<br>
+You will also see any lint errors in the console.
+
+### `npm test`
+
+Launches the test runner in the interactive watch mode.<br>
+See the section about [running tests](https://facebook.github.io/create-react-app/docs/running-tests) for more information.
+
+### `npm run build`
+
+Builds the app for production to the `build` folder.<br>
+It correctly bundles React in production mode and optimizes the build for the best performance.
+
+The build is minified and the filenames include the hashes.<br>
+Your app is ready to be deployed!
+
+See the section about [deployment](https://facebook.github.io/create-react-app/docs/deployment) for more information.
+
+### `npm run eject`
+
+**Note: this is a one-way operation. Once you `eject`, you can’t go back!**
+
+If you aren’t satisfied with the build tool and configuration choices, you can `eject` at any time. This command will remove the single build dependency from your project.
+
+Instead, it will copy all the configuration files and the transitive dependencies (Webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you’re on your own.
+
+You don’t have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn’t feel obligated to use this feature. However we understand that this tool wouldn’t be useful if you couldn’t customize it when you are ready for it.
+
+## Learn More
+
+You can learn more in the [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started).
+
+To learn React, check out the [React documentation](https://reactjs.org/).
+
+### Code Splitting
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/code-splitting
+
+### Analyzing the Bundle Size
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size
+
+### Making a Progressive Web App
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app
+
+### Advanced Configuration
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/advanced-configuration
+
+### Deployment
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/deployment
+
+### `npm run build` fails to minify
+
+This section has moved here: https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify