System Requirements Document (SRD)

misty-app

1. Introduction

The misty-app is a seasonal application designed to track sakura (cherry blossoms) in Japan in real-time. It provides users with an interactive map-based interface featuring pins that represent sakura locations, along with ratings, photos, comments, and live updates. The app aims to serve both tourists and locals, offering direct and immediate access without requiring user login or authentication.

This document outlines the system requirements for the misty-app, ensuring it delivers a seamless, engaging, and community-driven experience for its users.

2. System Overview

The misty-app is a seasonal platform inspired by the dynamic nature of sakura blooming periods, similar to the thematic approach of games like League of Legends. The app will primarily focus on:

• Real-time sakura tracking: Users can view sakura statuses (small flower, big flower, real-time bloom) on an interactive map.
• Community-driven updates: Anonymous users can contribute photos, comments, and ratings for each sakura location.
• Ease of access: No login or authentication is required, ensuring immediate and direct interaction with the app.

The app will leverage modern technologies to provide a visually appealing and responsive experience, catering to both tourists and locals in Japan.

3. Functional Requirements

• As a User, I should be able to view a map with pins representing sakura locations.
• As a User, I should be able to see sakura statuses (small flower, big flower, real-time bloom) for each pin.
• As a User, I should be able to view photos attached to each pin.
• As a User, I should be able to read real-time comments and updates under each pin.
• As a User, I should be able to rate sakura locations anonymously.
• As a User, I should be able to contribute photos and comments anonymously.
• As a User, I should have immediate access to all features without needing to log in.

4. User Personas

Tourist

• Description: Visitors to Japan who want to explore sakura locations during the blooming season.
• Goals: Find the best sakura spots, view photos and ratings, and contribute updates during their travels.
• Pain Points: Lack of local knowledge, difficulty navigating unfamiliar areas.

Local Resident

• Description: Japanese locals who enjoy tracking sakura and sharing updates with the community.
• Goals: Share real-time updates, photos, and ratings for sakura locations.
• Pain Points: Crowded spots, inconsistent information about bloom statuses.

5. Visuals Colors and Theme

Color Palette

The misty-app will feature a unique color palette inspired by the sakura season and its serene, vibrant atmosphere:

• Background: #F8F3F8 (Soft Sakura Pink)
• Surface: #FFFFFF (Pure White)
• Text: #4A4A4A (Charcoal Gray)
• Accent: #FFB7C5 (Blossom Pink)
• Muted Tones: #D1D1D1 (Gentle Gray)

This palette ensures the app feels light, inviting, and reflective of the sakura season's beauty.

6. Signature Design Concept

Interactive Sakura Map with Bloom Animation

The homepage will feature a live interactive map of Japan, where sakura pins dynamically bloom based on their real-time status.

Details:

• Animation: Pins will "grow" sakura petals as their status changes from small flower to big flower to full bloom. The petals will gently fall off the pins when the bloom period ends, creating a seasonal effect.
• Micro-interactions: Hovering over a pin will display a preview of the sakura status, photos, and ratings in a floating card. Clicking a pin will expand the card to show detailed comments and updates.
• Transitions: Smooth zoom-in and zoom-out effects when navigating the map.
• Background: A subtle watercolor-style map that shifts colors based on the time of day (e.g., soft pink hues during sunrise, deeper tones at night).
• Community Highlight: A "Trending Sakura Spots" section at the bottom of the map, showcasing the most popular locations based on user ratings and activity.

This design concept ensures the app is visually captivating and provides an unforgettable first impression.

7. Non-Functional Requirements

• The app must support high traffic during peak sakura seasons.
• The system should ensure real-time updates with minimal latency.
• The interface must be responsive and optimized for both web and mobile platforms.
• The app should prioritize data security and anonymity for users.
• The system should be scalable to accommodate future features or expansions.

8. Tech Stack

Frontend

• React for Web
• React Native for Mobile

Backend

• Python
• FastAPI

Database

• MySQL or MariaDB (preferred for relational data)
• MongoDB (for storing photos and comments)

AI Models

• GPT 5.2 for user-friendly responses
• Google Nano Banana for image generation

AI Tools

• Litellm for LLM Routing
• Langchain

Local Orchestration

• Docker
• docker-compose

Server-side Orchestration

• Kubernetes

9. Assumptions and Constraints

Assumptions

• Users will primarily access the app during the sakura blooming season.
• Anonymous contributions will encourage active participation and engagement.
• The app will be used by both tourists and locals in Japan.

Constraints

• Real-time updates require robust backend infrastructure to handle high traffic.
• Seasonal nature of the app limits its usage outside sakura blooming periods.
• Anonymous contributions may require moderation to prevent misuse.

10. Glossary

• Sakura: Cherry blossoms, a seasonal flower in Japan.
• Pin: A marker on the map representing a sakura location.
• Bloom Status: The current stage of sakura blooming (small flower, big flower, real-time bloom).
• Anonymous Contribution: User-generated content (photos, comments, ratings) without requiring login or authentication.
• Trending Sakura Spots: Popular sakura locations based on user activity and ratings.