Online Chat Application Project in Software Development

Online chat application is one of the most common software development projects to date. In this article, we are going to make the Online chat application software development project from scratch, college students. We will be covering all the steps you have to do while developing this project.

How to create a Online Chat Application?

Project Development is a multiphase process in which every process is equally important. Here in this post, we are also going to develop our Online Chat Application Project in multiple phases, such as:

1. Team Formation
2. Topic Selection
3. Creating Project Synopsys
4. Requirement Gathering
5. Coding or Implementation
6. Testing
7. Project Presentation

Let us look into the steps one by one.

Step 1- Team Formation Phase: Creating a Dynamic Team

Team formation for a final-year project is a crucial aspect that can significantly impact the success and efficiency of the project. In the final year, students often have diverse academic backgrounds, skills, and interests. Therefore, forming a well-balanced team becomes essential to leverage the strengths of each member and address any potential weaknesses.

In Our project as we will be exploring about web application for Online Chat Application so we will be required below skill sets.

1. Front end Developer
2. Back end Developer
3. Tester

Step 2- Topic Selection

While making our project of Online Chat Application this will be our second step in which we will find an interesting problem statement and try to generate an idea to solve that problem using our knowledge.

Choose a topic related to your field of study that is of great interest to you. It is advised that you pick a topic that has a powerful motive. For instance, a project that helps humankind will truly be unmatched. Another factor to keep in mind is to choose topics that aren’t very common. 

Topic Planning: In this phase team will gather and try to search a topic or problem statement by brainstorming , reverse thinking or any other strategy and select a problem which is challenging in nature and solvable by using their combined knowledge of tech.

Defining & Set Objective: After planning the problem statement we will define clear problem statement and its objectives.

Result : In the end of this phase we will be having a problem statement for our project.

In our example we are selecting the topic ” Online Chat Application ” .

After the selection of the topic we are going to start our project work in the following steps:

Step 3- Project Synopsys for Online Chat Application

A project synopsis serves as a concise overview or summary of a proposed project, offering a brief but comprehensive insight into its objectives, scope, methodology, and expected outcomes. It typically acts as a preliminary document, providing supervisors, or evaluators with a quick understanding of the project before they delve into more detailed documentation.

The project synopsis usually includes key elements such as the project title, problem statement or context, objectives, scope and limitations, methodology or approach, expected outcomes, and the significance of the project in the broader context. It serves as a roadmap, guiding readers through the fundamental aspects of the project and helping them grasp its purpose and potential impact.

Below are some of the points we have to cover in the synopsis report :

• Project Title
• Introduction of Project
  • Problem Statement
  • Proposed Solution
  • Objective of the Project
  • Scope of the Project
• Methodologies used
  • ER Model
  • Use case Diagram
  • Dataflow Diagram
• Features of the project
  • For Users
  • For Admin
• Impact of the project
• Limitations of the project
• Future scope of the project

Let’s create a Synopsys Report for Online Chat Application:

3.1 Introduction | Project Synopsys for Online Chat Application

An online chat application is a software application that enables users to exchange messages and communicate with each other in real-time. It allows individuals or groups to have conversations, share information, and collaborate instantly over the Internet. Online Chat Application is designed to provide a responsive and interactive experience, where messages are delivered and displayed immediately as they are sent. This means that users can engage in conversations and receive updates in real-time, without significant delays.

3.1.1 Problem Statement for Online Chat Application:

Traditional online chat applications are struggling to keep pace with evolving communication needs, particularly in the digital age where users expect seamless integration of various media formats and efficient management of conversations. Outdated platforms often suffer from cumbersome interfaces, limited features for organizing conversations, and a lack of analytics tools, hampering users’ ability to effectively communicate and collaborate. To address these challenges, there is a need for a modern online chat application with an intuitive interface, robust conversation management capabilities, and advanced analytics functionalities.

3.1.2 Proposed Solution for Online Chat Application:

Our solution for the online chat application involves developing a user-friendly platform using modern web technologies like Node.js, React.js, and MongoDB. The focus is on creating an intuitive interface for seamless communication, real-time messaging capabilities, and robust security measures.

3.1.3 Objective of the Project:

The primary objective of our online chat application project is to develop a robust and user-friendly platform that facilitates seamless communication and collaboration among users in real-time. Key objectives include:

• Efficient Communication: Enable users to engage in instant messaging with friends, colleagues, or groups, fostering efficient and effective communication.
• User-Friendly Interface: Design an intuitive and easy-to-navigate interface that enhances user experience and encourages engagement.
• Multimedia Support: Provide support for sharing multimedia content such as images, videos, and files within chat conversations, enriching the communication experience.
• Real-Time Messaging: Implement real-time messaging functionality using modern web technologies to ensure quick delivery and response times.
• Security Measures: Incorporate robust security measures, including end-to-end encryption and secure authentication, to ensure user privacy and data integrity.
• Administrative Controls: Develop administrative features for managing users, monitoring chat activity, and enforcing community guidelines to maintain a safe and welcoming environment.

3.1.4 Scope of the Project:

In order to satisfy customers’ communication demands, our online chat application project aims to provide a feature-rich platform with a multitude of functionalities. Key components of the project scope include:

1. Message capabilities: Including essential messaging capabilities including group and one-on-one chats, delivery status indications for messages, and notifications for incoming messages.
2. Support for Multimedia: Enabling users to exchange multimedia files, such as documents, movies, photos, and links, during chat sessions.
3. Real-time Communication: Including real-time messaging features with WebSockets-based technology to guarantee instant message delivery and device synchronisation.
4. User authentication: To confirm users’ identities and guard against unwanted access, safe user authentication techniques should be put in place.
5. User Profiles and Settings: Giving users the ability to personalise and edit their profiles, control account settings, and choose their privacy settings.
6. SSearch Functionality: Strong search capabilities should be made available to users so they may quickly locate and access previous exchanges, messages, and media files.
7. Admin Panel: Creating an administration dashboard with tools for system configuration, statistics, chat moderation, and user management.
8. Security Measures: Strong security mechanisms including end-to-end encryption, secure data transport, and defence against frequent security risks like XSS and CSRF attacks should be included.
9. Scalability and Performance: Creating an application architecture that is both scalable and performant in order to support numerous users at once and keep top performance even under stressful conditions.
10. Mobile Compatibility: Ensuring mobile device compatibility via responsive design and iOS and Android mobile app development is known as mobile compatibility.

By defining the scope of the project, we aim to establish clear boundaries and deliverables, ensuring that the development process remains focused and aligned with the project objectives and requirements.

3.2 Methodologies | Project Synopsys for Online Chat Application

In online chat application we are using various technologies and new methodologies to solve our problems. Below are the detailed description about the technology used and methods we are applying in our project.

Technology Used:

Here we are developing a Online Chat Application using react.js for the frontend, and MongoDB, express.js and node.js for the backend involves a structured methodology.

ER Model of Online Chat Application:

An Entity-Relationship Diagram (ERD) for a Online Chat Application models the entities and their relationships within the system. Below is a simplified ERD for a Online Chat Application. In Synopsys we make a rough ER Diagram to give a idea about the working of the project.

Let’s Draw an ER Model of Online Chat Application:

ER Diagram of Online Chat Application

Data Flow Diagram of Online Chat Application:

Data Flow Diagram (DFD) serves as a visual representation of the flow of information within the system. This diagram illustrates how data, such as book information, user details, and transaction records, moves between various components of the Online Chat Application.

• Processes, represented by circles or ovals.
• Data stores, depicted by rectangles, represent where information is stored.
• Data flows, indicated by arrows, showcase how data moves between processes.

The DFD provides a concise yet comprehensive overview of the Online Chat Application’s data flow and interactions, aiding in the analysis, design, and communication of the system’s functional aspects.

Level one DFD of Online Chat Application

Level Two DFD of Onlne Chat Application

Use Case Diagram of Online Chat Application:

Use case diagram referred as a Behaviour model or diagram. It simply describes and displays the relation or interaction between the users or customers and providers of application service or the system. It describes different actions that a system performs in collaboration to achieve something with one or more users of the system. Use case diagram is used a lot nowadays to manage the system.

Here is a Use Case Diagram for Online Chat Application:

Use Case DIagram of Online Chat Application

3.3 Features | Project Synopsys for Online Chat Application

Our online chat application aims to revolutionize communication by providing a comprehensive platform with a wide array of features tailored to meet the diverse needs of users. The key features of the project include:

1. Real-time Messaging: Instantaneous communication through real-time messaging capabilities, ensuring quick delivery and synchronization of messages across all devices.
2. Multimedia Support: Seamless sharing of multimedia content such as images, videos, documents, and links within chat conversations, enhancing the interactive experience.
3. User Authentication: Secure user authentication mechanisms to verify user identities and protect against unauthorized access, ensuring the confidentiality and integrity of user data.
4. User Profiles and Settings: Personalized user profiles with customizable settings, allowing users to manage their preferences, privacy settings, and account details.
5. Search Functionality: Robust search functionality enabling users to easily search and retrieve past conversations, messages, and media content, facilitating efficient communication.
6. Admin Panel: An intuitive administrative dashboard empowering administrators with features for user management, chat moderation, analytics, and system configuration, ensuring smooth operation and enforcement of community guidelines.
7. Security Measures: Stringent security measures including end-to-end encryption, secure data transmission, and protection against common security threats, safeguarding user privacy and data integrity.
8. Scalability and Performance: Scalable architecture designed to handle a large volume of concurrent users and maintain optimal performance under heavy loads, ensuring a seamless user experience.
9. Mobile Compatibility: Compatibility with mobile devices through responsive design and mobile app development for iOS and Android platforms, enabling users to stay connected on the go.

3.4 Impact | Project Synopsys for Online Chat Application

The creation and implementation of our virtual chat platform hold the potential to greatly influence communication and cooperation across multiple domains. An outline of the expected impact is provided below:

• Improved Communication: By giving consumers a practical platform for instant messaging, the online chat application will expedite communication. This will enable enhanced productivity in both personal and professional contexts, as well as quicker decision-making and more seamless coordination.
• Enhanced Collaboration: The programme will promote creativity and collaboration by allowing users to exchange multimedia content within chat chats. Teams will be able to easily share files, ideas, and feedback, which will improve teamwork and project results.
• Enhanced Connectivity: The app will allow users to communicate with friends, family, coworkers, and clients from anywhere in the world, bridging geographical divides. Among users, this greater connectedness will fortify bonds and promote a feeling of community.
• Enhanced Accessibility: The programme will guarantee accessibility for users on the go thanks to its compatibility with desktop and mobile devices. Users will be able to interact and work together anytime, anyplace thanks to this accessibility, which will increase convenience and flexibility.
• Empowerment via Personalisation: Users will be able to adjust their chat experience to fit their tastes and requirements if they have the option to customise their profiles and settings. The platform’s user engagement and happiness will increase as a result of this customisation.
• Administrative Effectiveness: The application’s administrative panel gives administrators the ability to efficiently manage users, keep an eye on chat behaviour, and impose community rules. This will cut down on administrative burden while guaranteeing a secure and friendly environment for all users.
• Protection and Privacy: The programme will give top priority to user privacy and data protection by implementing strong security measures like end-to-end encryption and secure authentication. Users will feel more confident as a result, and they will be encouraged to interact openly without worrying about data breaches or unauthorised access.
• Performance and Scalability: Built for maximum performance and scalability, the application will be able to handle a high volume of users and messages without compromising responsiveness or speed. This scalability will provide a consistent user experience and facilitate the expansion of user communities.

Overall, the online chat application is poised to make a positive impact by enhancing communication, fostering collaboration, increasing connectivity, and prioritizing security and user satisfaction. It has the potential to transform the way people interact and collaborate in both personal and professional contexts, paving the way for a more connected and productive digital future.

3.5 Limitations | Project Synopsys for Online Chat Application

Online Chat Application can offer many benefits, it may also have certain limitations. Here are some potential constraints associated with such a system:

• Challenges with Scalability: As the user base increases, scalability could become a problem. This could result in possible performance deterioration and slower response times during periods of high usage.
• Resource Constraints: The application’s capacity to manage a high number of active users or multimedia material may be impacted by limited resources, such as server capacity and bandwidth.
• Security Risks: Even with security precautions in place, there is a chance that the application will be breached by malware, unauthorised access, or data breaches, which could endanger user privacy and data integrity.
• Compatibility Issues: Compatibility problems can occur with a variety of devices, browsers, and operating systems, impacting the application’s functioning and user experience.
• Regulatory Compliance: Adherence to privacy laws and data protection rules, such the CCPA or GDPR, can be difficult at times. To guarantee legal compliance, constant monitoring and updates are necessary.
• User Engagement: It can be difficult to maintain user engagement and retention, especially in a competitive market where consumers have access to a wide variety of alternative communication channels.
• Technical Dependencies: Reliances on external libraries, APIs, or services run the risk of causing changes in functionality, service disruptions, or compatibility problems.
• User Experience Constraints: The application’s adoption rate and overall user experience may be impacted by restrictions in the usability, accessibility, or design of the user interface.

To mitigate these limitations, it’s essential to continuously monitor and update the system, follow best practices in coding and security, and consider adopting additional technologies or frameworks based on evolving project requirements. Regular testing and user feedback can also help identify and address potential constraints.

3.6 Future Scope | Project Synopsys for Online Chat Application

The online chat application project opens up numerous possibilities for future enhancements and advancements to further elevate the user experience and adapt to changing communication trends. Some potential areas for future scope include:

1. Integration of Artificial Intelligence (AI): Incorporating AI-driven features such as chatbots for automated assistance, natural language processing for improved understanding of user queries, and sentiment analysis for gauging user emotions.
2. Enhanced Multimedia Sharing: Introducing additional multimedia sharing capabilities such as live streaming, augmented reality (AR) filters, and interactive stickers to make conversations more engaging and interactive.
3. Voice and Video Calling: Integrating voice and video calling functionalities to facilitate real-time communication, virtual meetings, and conferencing directly within the chat application.
4. Community Building Features: Developing features to foster community building, including public chat rooms, interest-based groups, and events, to encourage interaction and engagement among users with shared interests.
5. Privacy-Centric Features: Implementing enhanced privacy features such as ephemeral messaging, self-destructing messages, and enhanced encryption protocols to ensure user data security and confidentiality.
6. Localization and Global Expansion: Localizing the application to support multiple languages and cultural preferences, and expanding its reach to new markets and regions to cater to a diverse user base worldwide.
7. Cross-Platform Compatibility: Developing native applications for various platforms including desktops, mobile devices, and wearable devices, ensuring seamless access and consistent user experience across different devices.
8. Accessibility Enhancements: Continuously improving accessibility features to make the application more inclusive and accessible to users with disabilities, including screen reader compatibility and keyboard navigation support.

By continually innovating and expanding the features and functionalities of the online chat application, we aim to stay ahead of the curve and deliver a cutting-edge platform that meets the evolving needs and expectations of our users in the dynamic digital landscape.

Step 4- Requirement Gathering (Creating SRS for Online Chat Application)

This is the next phase after the submission of the synopsis report. We can do this process before the Synopsys report creation as well , It is all depends upon the project and their requirements. Here after getting an overview about the project now we can easily do the requirement gathering for our project.

Requirement analysis, also known as requirements engineering or elicitation, is a critical phase in the software development process. It involves gathering, documenting, and analysing the needs and constraints of a project to define its scope and guide subsequent development.

We develop a detailed Software Requirement Specification for Online Chat Application, in this process which will have all the details about the project from Technical to Non Technical Requirements.

Software Requirement Specification (SRS) Document | Online Chat Application

Below are some of the key points in a Software Requirement Specification Document:

• Purpose
• Scope
• References
• Introduction
• Overall Description
  • Product Perspective
  • Product Function
  • User Classes and characteristics
  • Operating Environment
  • Assumptions and Dependencies

• Functional Requirements
  • Software Requirements
  • Hardware Requirements
  • Database Requirements
• Non-Functional Requirement
  • Usability Requirements
  • Security Requirements
  • Availability Requirements
  • Scalability Requirements
  • Performance Requirements
• Design
  • Control Flow Diagram
  • ER Model of LMS
  • Use Case Diagram
• System Features

Note: To know more about What is a SRS Document or How to write a good SRS for your Project follow these articles.

Let’s Start building a Software Requirement Specification for Online Chat Application Document for our project:

4.1 SRS (Online Chat Application) | Introduction:

The primary objective of this Software Requirements Specification (SRS) document is to outline the functional and non-functional requirements of the Online Chat Application project. The document provides a comprehensive description of the features and capabilities expected by the client.

The purpose of this project is to develop an online chat application that facilitates seamless communication and collaboration among users in real-time. The application aims to create a user-friendly environment for individuals and groups to engage in text-based conversations, share multimedia content, and interact effectively.

4.1.2 Scope of the Project:

The Online Chat Application aims to revolutionize digital communication by providing users with a comprehensive platform for real-time messaging, collaboration, and interaction. The project scope encompasses the following key aspects:

Overall, the Online Chat Application project aims to provide a versatile and user-centric platform that enhances communication, collaboration, and user engagement in the digital realm.

4.1.3 References:

Books:

• Software Requirements (Microsoft) Second Edition By Karl E. Wiegers
• Fundamentals of Database System By Elmasri
• Software Requirements and Specifications: A Lexicon of Practice, Principles and Prejudices (ACM Press) by Michael Jackson
• Fundamentals of Software Engineering By Rajib Mall
• Software Engineering: A Practitioner’s Approach Fifth Edition By Roger S. Pressman

4.2 SRS (Online Chat Application) | Overall Description:

4.2.1 Product Perspective:

The Online Chat Application serves as a replacement for conventional chat systems, offering users an enhanced interface and advanced features for seamless communication and collaboration. The Online Chat Application replaces manual chat systems with an internet-based solution, streamlining communication processes and enhancing efficiency.

4.2.2 Product Functions:

The proposed Online Chat Application is designed to simplify the day-to-day activities of a chat features for both users.

Authentication and Authorization System:

The system implements a secure login mechanism for users, and administrators. The admin has the authority to manage user access and ensure data integrity. Our online chat application aims to revolutionize communication by providing a comprehensive platform with a wide array of features tailored to meet the diverse needs of users. The key features of the project include:

1. Real-time Messaging: Instantaneous communication through real-time messaging capabilities, ensuring quick delivery and synchronization of messages across all devices.
2. Multimedia Support: Seamless sharing of multimedia content such as images, videos, documents, and links within chat conversations, enhancing the interactive experience.
3. User Authentication: Secure user authentication mechanisms to verify user identities and protect against unauthorized access, ensuring the confidentiality and integrity of user data.
4. User Profiles and Settings: Personalized user profiles with customizable settings, allowing users to manage their preferences, privacy settings, and account details.
5. Search Functionality: Robust search functionality enabling users to easily search and retrieve past conversations, messages, and media content, facilitating efficient communication.
6. Admin Panel: An intuitive administrative dashboard empowering administrators with features for user management, chat moderation, analytics, and system configuration, ensuring smooth operation and enforcement of community guidelines.
7. Security Measures: Stringent security measures including end-to-end encryption, secure data transmission, and protection against common security threats, safeguarding user privacy and data integrity.
8. Scalability and Performance: Scalable architecture designed to handle a large volume of concurrent users and maintain optimal performance under heavy loads, ensuring a seamless user experience.
9. Mobile Compatibility: Compatibility with mobile devices through responsive design and mobile app development for iOS and Android platforms, enabling users to stay connected on the go.

4.2.3 Class Diagram and Characteristics:

A class diagram for an online chat application typically represents the various classes and their relationships within the system. Here’s a simplified example of a class diagram for an online chat application, along with some characteristics commonly associated with such applications:

Characteristics:

Class Diagram of Online Chat Application

1. User Authentication: Users can sign up and sign in to the application using credentials like username and password.
2. Messaging: Users can send and receive messages to and from other users or within chatrooms.
3. Chatrooms: Users can create chatrooms, join existing ones, and participate in group conversations.
4. Real-time Communication: Messages are delivered in real-time to provide instant communication.
5. User Profiles: Users have profiles containing information like username, profile picture, etc.
6. Message Persistence: Messages are stored persistently to allow users to view past conversations.
7. Notifications: Users receive notifications for new messages, mentions, etc.
8. Emojis and Multimedia: Users can send emojis, files, images, and other multimedia content in messages.
9. Privacy and Security: The application ensures the privacy and security of user data and communications through encryption and access controls.
10. Search Functionality: Users can search for specific messages or users within the application.
11. Online Presence: Users can see the online status of other users.
12. Blocking and Reporting: Users can block other users or report inappropriate behavior.
13. Admin Controls: Administrators have controls to manage users, chatrooms, and enforce rules.

4.3 SRS | Use case Diagram for Online Chat Application:

A use case diagram for an online chat application illustrates the various interactions between users and the system. Here’s a simplified example of a use case diagram for an online chat application:

Use Case Diagram of Online Chat Application

User Actions:

1. Sign Up: User creates a new account by providing necessary information like username, password, etc.
2. Sign In: User logs into the application using their credentials.
3. Send Message: User composes and sends a message to another user or within a chatroom.
4. Receive Message: User receives messages sent by other users in real-time.
5. Create Chatroom: User creates a new chatroom, becoming its administrator.
6. Join Chatroom: User joins an existing chatroom to participate in group conversations.
7. Leave Chatroom: User exits a chatroom, ceasing participation in its conversations.
8. View Chatroom Participants: User views the list of participants in a chatroom.

System Functions:

1. Message Management: The system handles sending and receiving messages between users and within chatrooms.
2. User Management: The system manages user accounts, including sign-up, sign-in, and user authentication.
3. Chatroom Management: The system handles creating, joining, leaving, and managing chatrooms.
4. Participant Management: The system manages the list of participants in each chatroom.
5. Real-time Communication: The system ensures real-time delivery of messages between users.

This use case diagram illustrates the primary interactions between users and the online chat application. It highlights the key functionalities that users can perform and the corresponding system functions that facilitate those actions.

ER Model of Online Chat Application:

An Entity-Relationship (ER) model for an online chat application typically identifies the main entities involved in the system and their relationships. Here’s a simplified ER model for an online chat application:

Entities:

1. User: Represents a user of the chat application.
   • Attributes: UserID (Primary Key), Username, Password, Email, Last Active Time, etc.
2. Message: Represents a message sent by a user in a chat.
   • Attributes: MessageID (Primary Key), SenderID (Foreign Key), ChatroomID (Foreign Key), Content, Timestamp, etc.
3. Chatroom: Represents a chatroom where users can engage in group conversations.
   • Attributes: ChatroomID (Primary Key), Name, Creation Time, etc.

Relationships:

1. Participates: Relates Users to Chatrooms to represent user participation in chatrooms.
   • Role Names: Participant (User), Chatroom
   • Cardinality: Many-to-Many (A user can participate in multiple chatrooms, and a chatroom can have multiple participants.)
2. Contains: Relates Chatrooms to Messages to represent messages contained within chatrooms.
   • Role Names: Chatroom, Message
   • Cardinality: One-to-Many (A chatroom can contain multiple messages, but a message belongs to only one chatroom.)

Here’s a textual representation of the ER model:

ER diagram of Online Chat Application

Data Flow Diagram of Online Chat Application:

A Data Flow Diagram (DFD) for an online chat application illustrates the flow of data within the system, including how data moves between processes, entities, and data stores. Here’s a simplified DFD for an online chat application:

• Processes, represented by circles or ovals.
• Data stores, depicted by rectangles, represent where information is stored.
• Data flows, indicated by arrows, showcase how data moves between processes, data stores, and external entities.
• Let’s draw an Data Flow Diagram of Online Chat Application:

Zero level DFD of Online Chat Application

Level One DFD of Online Chat Application

Level 2 DFD of Online Chat Application

4.4.1 Software Requirements:

This software package is developed using html , react for front end . Node.js and MongoDB Server as the back end to store the database for backend .

• Operating System: Windows 7, 8, 9, 10 .
• Frontend: Html , Css , Javascript, react.js.
• Backend: Node.js, Express.js
• Database: MongoDBServer (back end)

4.4.2 Hardware Requirements:

• Processor: Intel core i3 or above for a stable experience and fast retrieval of data.
• Hard Disk: 40GB and above
• RAM: 256 MB or more, recommended 2 GB for fast reading and writing capabilities which will result in better performance time.

5. Coding or Implementation of Online Chat Application

At this stage, the fundamental development of the product starts. For this, developers use a specific programming code as per the design. Hence, it is important for the coders to follow the protocols set by the association. Conventional programming tools like compilers, interpreters, debuggers, etc. are also put into use at this stage.

In our project we are using MERN stack to build the project so in this stage we are going to code our project. Before going further lets talk about the environment we need for the project.

5.1 Environment Creation:

In this stage we are going to create the environment to build our project, We will install all required software and extensions for ease in the coding part.

Required Softwares:

• VsCode: Vs Code is a widely used text editor for development purpose .
• Google Chrome: You need to install a web browser to execute the html code. You can use any of your favourite web browser.

5.2 Implementation of Online Chat Application Project | Frontend Development:

In this stage we are going to develop our frontend part of the project .

This is how our page will looks like:

Online Chat Application Frontpage

Prerequisites:

• MongoDB
• Express.js
• React.js
• Node.js
• MERN Stack

Approach to create Chat Application:

• First, We will create a backend server which will serve a middleman between mongDB and React FrontEnd.
• We will create an Interactive and Simple UI design for the frontEnd in which the message is sent and the other user responds to it. All the messages along with userName will be sent to backend using above created backend.
• We will use Socket.IO toupport real time chat.
• Lastly, we will create a database in MongoDB to store the messages.

Steps to Create the Project:

Step 1: Create a new project folder and navigate to it:

mkdir chat-backend
cd chat-backend

Step 2: Initialize a Node application and install required dependencies:

npm init -y
npm install express mongoose cors socket.io

Folder Structure (Backend):

Folder Structure of online chat application

Dependencies (Backend):

"dependencies": {
    "cors": "^2.8.5",
    "express": "^4.18.2",
    "mongoose": "^8.0.4",
    "socket.io": "^4.7.3"
}

Code (Backend):

Below is the Code for Creating above page:

server.js

// server.js

const express = require("express");
const mongoose = require("mongoose");
const cors = require("cors");

const ChatMessage = require("./models/ChatMessage");

const app = express();
const PORT = process.env.PORT || 5000;

// Middleware
app.use(cors());
app.use(express.json());

// MongoDB Connection
mongoose.connect("Your MongoDB connection string", {
    useNewUrlParser: true,
    useUnifiedTopology: true,
});

// Routes
app.get("/messages", async (req, res) => {
    try {
        const messages = await ChatMessage.find();
        res.json(messages);
    } catch (error) {
        console.error(error);
        res.status(500).json({ error: "Internal Server Error" });
    }
});

app.post("/messages", async (req, res) => {
    try {
        const { user, message } = req.body;

        if (!user || !message) {
            return res
                .status(400)
                .json({ error: "User and message are required" });
        }

        const chatMessage = new ChatMessage({
            user,
            message,
        });

        await chatMessage.save();

        res.status(201).json(chatMessage);
    } catch (error) {
        console.error(error);
        res.status(500).json({ error: "Internal Server Error" });
    }
});

// Start the server
app.listen(PORT, () => {
    console.log(`Server is running on port ${PORT}`);
});

ChatMessage.js

// models/ChatMessage.js

const mongoose = require('mongoose');

const chatMessageSchema = new mongoose.Schema({
    user: { type: String, required: true },
    message: { type: String, required: true },
    timestamp: { type: Date, default: Date.now },
});

const ChatMessage = mongoose.model('ChatMessage', chatMessageSchema);

module.exports = ChatMessage;

Step 3: To start the server run the following command.

node server.js

Step 4: Creating the frontend of the app by using the following command

cd ..
npx create-react-app chat-frontend
cd chat-frontend

Step 5: Install the required dependencies.

npm install axios react-router-dom socket.io-client

Folder Structure(Frontend):

Folder Structure (Frontend)

Dependencies(Frontend):

"dependencies": {
    "@testing-library/jest-dom": "^5.17.0",
    "@testing-library/react": "^13.4.0",
    "@testing-library/user-event": "^13.5.0",
    "axios": "^1.6.5",
    "react": "^18.2.0",
    "react-dom": "^18.2.0",
    "react-router-dom": "^6.21.1",
    "react-scripts": "5.0.1",
    "socket.io-client": "^4.7.3",
    "styled-components": "^6.1.8",
    "web-vitals": "^2.1.4"
}

Example: Create the required files and add the following code.

App.css

/* src/App.css */

body {
    margin: 0;
    padding: 0;
    font-family: 'Arial', sans-serif;
    background-color: #cadcfc;
    color: #00246b;
}

.App {
    text-align: center;
}

h1 {
    color: #00246b;
}

ul {
    list-style-type: none;
    padding: 0;
}

li {
    background-color: #8ab6f9;
    margin: 5px;
    padding: 10px;
    border-radius: 5px;
}

input {
    padding: 10px;
    margin-right: 10px;
    border: 1px solid #00246b;
    border-radius: 5px;
}

button {
    padding: 10px;
    background-color: #00246b;
    color: #cadcfc;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #8ab6f9;
    color: #00246b;
}

ChatRoom.js

// ChatRoom.js

import React, { useState, useEffect } from 'react';

const ChatRoom = () => {
    const [messages, setMessages] = useState([]);
    const [user, setUser] = useState('');
    const [message, setMessage] = useState('');

    const fetchMessages = async () => {
        try {
            const response = await fetch('http://localhost:5000/messages');
            const data = await response.json();
            setMessages(data);
        } catch (error) {
            console.error('Error fetching messages:', error);
        }
    };

    const sendMessage = async () => {
        try {
            await fetch('http://localhost:5000/messages', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json',
                },
                body: JSON.stringify({ user, message }),
            });

            // Clear the message input after sending
            setMessage('');
            // Fetch messages to update the list
            fetchMessages();
        } catch (error) {
            console.error('Error sending message:', error);
        }
    };

    useEffect(() => {
        // Fetch messages on component mount
        fetchMessages();
        // Poll for new messages every 2 seconds
        const interval = setInterval(() => {
            fetchMessages();
        }, 2000);

        return () => clearInterval(interval);
    }, []); // Run only once on mount

    return (
        <div>
            <h2>Chat Room</h2>
            <ul>
                {messages.map((message) => (
                    <li key={message._id}>
                        <strong>{message.user}:</strong> {message.message}
                    </li>
                ))}
            </ul>
            <div>
                <input
                    type="text"
                    placeholder="Your name"
                    value={user}
                    onChange={(e) => setUser(e.target.value)}
                />
                <input
                    type="text"
                    placeholder="Type your message..."
                    value={message}
                    onChange={(e) => setMessage(e.target.value)}
                />
                <button onClick={sendMessage}>Send</button>
            </div>
        </div>
    );
};

export default ChatRoom;

App.js

//App.js

import './App.css';
import ChatRoom from './ChatRoom';

function App() {
    return (
        <div className="App">
            <ChatRoom />
        </div>
    );
}

export default App;

Step 6: To start the frontend run the following command.

npm start

Output:

Output of Online Chat Application

Step 6: Testing of Online Chat Application

Testing is a crucial phase in the development of a Online Chat Application to ensure that it meets its intended requirements, functions correctly, and is free of bugs.

Below are some key steps and considerations for the testing phase of a Online Chat Application:

1. Unit Testing:

• Test individual modules or components of the system in isolation to ensure they function as intended.
• We have a major shortening and redirect module which is used to shorten and redirect URLs, in this testing step we take we make sure proper functionality of each component.

2. Integration Testing:

• Verify that different modules and components of the Online Chat Application work together seamlessly.
• Test data flow and interactions between various parts of the system.

3. Functional Testing:

• Validate that the Online Chat Application its intended functions accurately and efficiently.

4. User Interface (UI) Testing:

• Ensure that the user interface is user-friendly, intuitive, and visually appealing.
• Check for consistency in design elements and responsiveness across different devices.

5. Performance Testing:

• Assess the system’s performance under normal and peak load conditions.
• Check response times, scalability, and overall system stability.

6. Security Testing:

• Identify and rectify any security vulnerabilities in the system.
• Ensure that user data is handled securely, and unauthorized access is prevented specially in case of location.

Step 7- Creating Project Presentation on Online Chat Application Generator Project

In this phase of software development, Team will have to present their work in front of authorities and they will judge your work and give suggestions on the improvement areas.

The ideal length of the ppt should be min 10 slides and maximum 15 slides , you will not have too much time to explain your project so prepare your presentation carefully using important key points.

Some of the key points (slides) which your presentation should have are given below:

1. Project Name and Team Details
2. Introduction
3. Purpose
4. Project Scope
5. Problem Statement
6. Proposed Solution
7. Product Functionalities
8. Flow chart of the project
9. Analysis of model
10. Summary

Step 8- Writing a Research Paper on Library Management System:

You can also write a research paper on the basis of your work . The Research paper will explore the significance of implementing an Integrated Online chat application to enhance the efficiency, accessibility, and overall functionality of libraries.

Key points for this paper includes:

• Abstract
• Introduction
• Related Work
• Methodologies Used
• Features
• Result and Discussion
• Acknowledgement

For literature Survey you can study research paper based on these top online chat application:

8 Free Chat Apps to Message on Your Phone or Computer

1. WhatsApp ·
2. Telegram ·
3. Viber ·
4. Line ·
5. WeChat ·
6. Facebook Messenger ·
7. Signal ·
8. Tox

Future Enhancements for Online Chat Application:

1. Voice and Video Calling
2. Screen Sharing
3. Message Reactions
4. Threaded Conversations
5. Message Editing and Deleting
6. Advanced Search