System Requirements Document (SRD)

Project Name: autumn-types

1. Introduction

The purpose of this System Requirements Document (SRD) is to outline the functional and non-functional requirements for the autumn-types project, an animated wallpaper app designed for users to browse, download, and customize visually creative wallpapers. This document will serve as a comprehensive guide for the development and implementation of the application.

The project is being developed for Mayank Raj, based in India (IN), and will cater to a global audience with a focus on creativity, personalization, and user engagement. Locale-specific defaults, such as Indian Standard Time (IST) and INR currency, will be considered where applicable.

2. System Overview

The autumn-types app will provide users with a platform to explore a wide variety of animated wallpapers. The app will include features such as browsing categorized wallpapers, downloading them, live previews, and customization options. The system will be designed to ensure a seamless and visually appealing user experience, leveraging modern technologies and design principles.

Key objectives include:

• Delivering a rich library of animated wallpapers.
• Enabling users to preview wallpapers in real-time.
• Providing customization tools for personalized wallpaper creation.
• Ensuring high performance and responsiveness across devices.

3. Functional Requirements

As User:

• I should be able to browse a library of animated wallpapers.
• I should be able to download wallpapers to my device.
• I should be able to preview wallpapers live on my device.
• I should be able to customize wallpapers with available tools.
• I should be able to search wallpapers by categories, tags, or themes.
• I should be able to save my favorite wallpapers for quick access.

As Admin:

• I should be able to upload new wallpapers to the library.
• I should be able to manage categories and tags for wallpapers.
• I should be able to monitor user activity and app performance.

4. User Personas

1. General User

• Description: Individuals looking for animated wallpapers to personalize their devices.
• Goals: Browse, download, and customize wallpapers.
• Pain Points: Limited variety, slow app performance, and lack of customization options.

2. Admin

• Description: App administrators responsible for managing content and ensuring smooth operations.
• Goals: Upload and organize wallpapers, monitor app usage, and address user feedback.
• Pain Points: Inefficient content management tools and lack of analytics.

5. Visuals Colors and Theme

The autumn-types app will feature a vibrant and dynamic color palette to reflect the creativity and energy of animated wallpapers.

Color Palette:

• Background: #1E1E2F (Deep Midnight Blue)
• Surface: #2A2A3C (Charcoal Gray)
• Text: #F5F5F7 (Soft White)
• Accent: #FF6F61 (Coral Red)
• Muted Tones: #A1A1B5 (Muted Lavender)

This palette ensures a balance between vibrancy and readability, creating an engaging yet user-friendly interface.

6. Signature Design Concept

Interactive Wallpaper Gallery with Dynamic Animations

The homepage of the autumn-types app will feature an immersive 3D carousel of animated wallpapers. Users will be greeted with a visually stunning display where wallpapers appear as floating cards that rotate and animate as the user swipes through them.

Key Features:

• Hover Effects: Wallpapers will subtly animate (e.g., shimmer, glow, or ripple) when hovered over.
• Live Previews: Tapping on a wallpaper will expand it into a full-screen live preview, simulating how it would look on the user’s device.
• Dynamic Background: The app’s background will shift colors based on the dominant hues of the selected wallpaper, creating a cohesive and immersive experience.
• Micro-Interactions: Smooth transitions, subtle vibrations, and sound effects will enhance user engagement.

This design concept ensures that the app leaves a lasting impression while emphasizing its core functionality.

7. Non-Functional Requirements

• Performance: The app must load within 2 seconds on a standard 4G connection.
• Scalability: The system should support up to 1 million users concurrently.
• Security: User data must be encrypted using industry-standard protocols.
• Compatibility: The app must be compatible with Android (API 21+) and iOS (version 12+).
• Localization: Support for multiple languages, starting with English and Hindi.

8. Tech Stack

Frontend:

• React for Web
• React Native for Mobile App

Backend:

• Python
• FastAPI

Database:

• MySQL (with Alembic for migrations)

AI Models:

• GPT 5.4 for user-friendly responses
• Google Nano Banana for image generation

AI Tools:

• Langchain
• Litellm for LLM Routing

Orchestration:

• Docker for local orchestration
• Kubernetes for server-side orchestration

9. Assumptions and Constraints

Assumptions:

• Users will have internet access to browse and download wallpapers.
• The app will primarily target Android and iOS platforms.
• Animated wallpapers will be optimized for mobile devices.

Constraints:

• Limited initial budget for AI model integration.
• Compliance with app store guidelines for both Android and iOS.

10. Glossary

• Animated Wallpaper: A dynamic, moving image used as a background on a device.
• Live Preview: A feature that allows users to see how a wallpaper will look on their device in real-time.
• Customization Tools: Features that enable users to modify wallpapers (e.g., color adjustments, adding text).
• 3D Carousel: A rotating display of items in a three-dimensional space.