System Requirements Document (SRD) for proud-app

1. Introduction

The proud-app is a video call application designed to cater to the growing demand for seamless virtual communication. With the increasing reliance on remote interactions in personal, professional, and educational contexts, proud-app aims to provide a reliable, user-friendly, and feature-rich platform for video communication. This document outlines the system requirements for the development and implementation of proud-app.

2. System Overview

Proud-app is a video call application that allows users to connect via high-quality video and audio calls. It is designed to support one-on-one calls, group calls, and additional features such as screen sharing, chat, and file sharing. The app will prioritize user experience, security, and scalability, ensuring it meets the needs of diverse user groups, including individuals, professionals, and educators.

The application will be developed with a focus on the Indian market, considering local preferences such as time zone (IST), currency (INR), and regional language support. Proud-app will be accessible on both web and mobile platforms.

3. Functional Requirements

• As a User, I should be able to register and log in using email or phone number.
• As a User, I should be able to initiate one-on-one video calls.
• As a User, I should be able to initiate group video calls with up to 50 participants.
• As a User, I should be able to share my screen during a video call.
• As a User, I should be able to send text messages in a chat during a video call.
• As a User, I should be able to share files during a video call.
• As a User, I should be able to mute/unmute my microphone and enable/disable my camera during a call.
• As a User, I should be able to schedule video calls and send invites to participants.
• As a User, I should be able to record video calls and save them locally or in the cloud.
• As a User, I should be able to receive notifications for scheduled calls and missed calls.
• As an Admin, I should be able to manage user accounts and permissions.
• As an Admin, I should be able to monitor system performance and generate usage reports.

4. User Personas

1. User

• Individuals using the app for personal communication.
• Professionals using the app for remote work and virtual meetings.
• Educators and students using the app for online classes and training sessions.

2. Admin

• Responsible for managing user accounts, permissions, and overall system performance.

5. Visuals Colors and Theme

The proud-app will adopt a modern, clean, and professional design aesthetic. The proposed color scheme is as follows:

• Primary Color: #0078D4 (Azure Blue) – Represents trust and professionalism.
• Secondary Color: #F4F4F4 (Light Gray) – For backgrounds and neutral elements.
• Accent Color: #FFAA00 (Golden Yellow) – For call-to-action buttons and highlights.
• Text Color: #333333 (Dark Gray) – For readability and contrast.

The theme will emphasize simplicity and ease of use, with intuitive navigation and responsive design for both web and mobile platforms.

6. Signature Design Concept

Interactive Call Hub with Dynamic Visuals

The proud-app homepage will feature an interactive call hub design. Upon landing, users will see a 3D animated globe that rotates slowly, with glowing dots representing active users or call locations worldwide. Hovering over a dot will display a tooltip with details like "Active Users in Mumbai" or "Ongoing Calls in Delhi."

The globe will transition into a call dashboard when users log in, with smooth animations revealing options for "Start a Call," "Join a Call," or "Schedule a Call." The dashboard will feature micro-interactions, such as buttons that subtly pulse when hovered over and a dynamic background that shifts between day and night themes based on the user's local time.

The homepage will also include a live call counter showing the number of active calls globally, creating a sense of community and engagement.

7. Non-Functional Requirements

• The system must support at least 10,000 concurrent users.
• The video and audio quality must adapt dynamically to the user's internet bandwidth.
• The app must comply with data privacy regulations, including GDPR and Indian IT Act.
• The system should ensure end-to-end encryption for all video calls and chats.
• The app should have a 99.9% uptime guarantee.
• The app should load within 3 seconds on a standard 4G connection.

8. Tech Stack

Frontend

• React for Web
• React Native for Mobile App

Backend

• Python
• FastAPI

Database

• MySQL (with Alembic for migrations)

AI Models

• GPT 5.2 for user-friendly responses and chat assistance.

AI Tools

• Langchain
• Litellm for LLM Routing

Local Orchestration

• Docker
• docker-compose

Server-Side Orchestration

• Kubernetes

9. Assumptions and Constraints

• The app will initially target the Indian market, with plans to expand globally.
• The maximum group call size is limited to 50 participants in the MVP phase.
• The app will support both Android and iOS platforms.
• Cloud storage for call recordings will be limited to 1GB per user in the free tier.

10. Glossary

• MVP: Minimum Viable Product.
• IST: Indian Standard Time.
• GDPR: General Data Protection Regulation.
• End-to-End Encryption: A method of secure communication that prevents third parties from accessing data while it's transferred from one end system to another.
• LLM: Large Language Model.
• Micro-interactions: Small, subtle animations or design elements that enhance user experience.