# vatsalparate/studygroup-backend architecture

> Architecture diagram of the GitHub repository vatsalparate/studygroup-backend, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-11-12). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/vatsalparate/studygroup-backend
- Repository: https://github.com/vatsalparate/studygroup-backend

## Overview

This repository is a Flask study-group API with account authentication, group membership, study-session scheduling, shared note uploads, and real-time group chat. Users enter through HTTP endpoints or a Socket.IO connection; the app handles each domain operation and uses SQLAlchemy-backed SQLite state, with Cloudinary for note files. The sampled code shows authentication and group operations directly, plus session reads and chat persistence. Some route bodies are omitted, so their details and any additional relationships are not inferred.

Main entry points: [`app.py`](https://github.com/vatsalparate/studygroup-backend/blob/main/app.py) (SQLAlchemy models), [`instance/study.db`](https://github.com/vatsalparate/studygroup-backend/blob/main/instance/study.db) (SQLite database)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_identity["Identity"]
  node_auth["Account and token auth<br/>[app.py]"]
end

subgraph group_groups["Study groups"]
  node_group_ops["Group membership<br/>[app.py]"]
end

subgraph group_collaboration["Collaboration"]
  node_sessions["Study sessions<br/>[app.py]"]
  node_notes["Note uploads<br/>[app.py]"]
  node_chat["Group chat<br/>[app.py]"]
end

subgraph group_data["Persistence and files"]
  node_orm["SQLAlchemy models<br/>[app.py]"]
  node_sqlite[("SQLite database<br/>[study.db]")]
  node_cloudinary["Cloudinary storage"]
end

node_user(("Study group user"))
node_socket_client(("Chat client"))

node_user -->|"registers or logs in"| node_auth
node_user -->|"manages membership"| node_group_ops
node_user -->|"schedules or views"| node_sessions
node_user -->|"uploads notes"| node_notes
node_socket_client -->|"joins and sends"| node_chat
node_auth -->|"queries and creates users"| node_orm
node_group_ops -->|"reads and updates groups"| node_orm
node_sessions -->|"queries sessions"| node_orm
node_chat -->|"persists messages"| node_orm
node_notes -->|"uploads files"| node_cloudinary
node_orm -->|"stores model data"| node_sqlite

click node_auth "https://github.com/vatsalparate/studygroup-backend/blob/main/app.py"
click node_group_ops "https://github.com/vatsalparate/studygroup-backend/blob/main/app.py"
click node_sessions "https://github.com/vatsalparate/studygroup-backend/blob/main/app.py"
click node_notes "https://github.com/vatsalparate/studygroup-backend/blob/main/app.py"
click node_chat "https://github.com/vatsalparate/studygroup-backend/blob/main/app.py"
click node_orm "https://github.com/vatsalparate/studygroup-backend/blob/main/app.py"
click node_sqlite "https://github.com/vatsalparate/studygroup-backend/blob/main/instance/study.db"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_auth,node_user,node_socket_client toneBlue
class node_group_ops toneAmber
class node_sessions,node_notes,node_chat toneMint
class node_orm,node_sqlite,node_cloudinary toneRose
```

## Components

### Identity

- [Account and token auth](https://github.com/vatsalparate/studygroup-backend/blob/main/app.py): `app.py`

### Study groups

- [Group membership](https://github.com/vatsalparate/studygroup-backend/blob/main/app.py): `app.py`

### Collaboration

- [Study sessions](https://github.com/vatsalparate/studygroup-backend/blob/main/app.py): `app.py`
- [Note uploads](https://github.com/vatsalparate/studygroup-backend/blob/main/app.py): `app.py`
- [Group chat](https://github.com/vatsalparate/studygroup-backend/blob/main/app.py): `app.py`

### Persistence and files

- [SQLAlchemy models](https://github.com/vatsalparate/studygroup-backend/blob/main/app.py): `app.py`
- [SQLite database](https://github.com/vatsalparate/studygroup-backend/blob/main/instance/study.db): `instance/study.db`
- **Cloudinary storage**

### Other components

- **Study group user**
- **Chat client**

## Connections

- Study group user → Account and token auth: registers or logs in (evidence: `app.py`)
- Study group user → Group membership: manages membership (evidence: `app.py`)
- Study group user → Study sessions: schedules or views (evidence: `app.py`)
- Study group user → Note uploads: uploads notes (evidence: `app.py`)
- Chat client → Group chat: joins and sends (evidence: `app.py`)
- Account and token auth → SQLAlchemy models: queries and creates users (evidence: `app.py`)
- Group membership → SQLAlchemy models: reads and updates groups (evidence: `app.py`)
- Study sessions → SQLAlchemy models: queries sessions (evidence: `app.py`)
- Group chat → SQLAlchemy models: persists messages (evidence: `app.py`)
- Note uploads → Cloudinary storage: uploads files (evidence: `app.py`)
- SQLAlchemy models → SQLite database: stores model data (evidence: `app.py`)