# sharmasatyam121104-devloper/circle-communication-platform architecture

> Architecture diagram of the GitHub repository sharmasatyam121104-devloper/circle-communication-platform, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-06-30). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/sharmasatyam121104-devloper/circle-communication-platform
- Repository: https://github.com/sharmasatyam121104-devloper/circle-communication-platform

## Overview

This repository is a two-part monorepo: a TypeScript backend in `circle-server` and a Vite/React frontend in `circle-ui`. The app is a real-time messaging and calling system, with authentication, chat, message attachments, and Twilio-backed audio/video calling.

1. Backend runtime and request boundary  
`circle-server` is the HTTP API and real-time server. It is organized around Express-style entry points (`src/index.ts`, `src/app.ts`) and feature routers under `src/modules/*`. Cross-cutting middleware/config sits in `src/config` and `src/utils`, which means most business logic is isolated behind domain controllers and routes.

2. Domain modules on the server  
The backend is split into four main business areas: `user`, `chat`, `message`, and `twilio`, plus a `socket` layer. Each feature has its own controller, routes, and types/models, which suggests the API is intentionally domain-scoped rather than monolithic.

3. Authentication and user management  
The user subsystem handles signup/login/session-style concerns, profile updates, and profile image upload. The presence of `passport.config.ts`, `jwt.ts`, `cookies.utils.ts`, and `user.middleware.ts` indicates auth is enforced with JWT/cookie-based mechanisms, likely with Passport strategies and protected route middleware.

4. Persistence and server-side infrastructure  
`db.ts` implies a database-backed API, and the `*.model.ts` files indicate a model layer beneath controllers. Redis is also configured, so the backend likely has a second stateful dependency for caching, session/connection coordination, or real-time support. `logger.ts`, `serverErrorHandler.ts`, `cors.config.ts`, and `helmet.config.ts` show the API is production-hardened with logging and security middleware.

5. Chat and message data flow  
Chat and message are separated into distinct modules. Chat appears to manage conversation membership and metadata, while message handles message creation/retrieval and attachment handling. The message module includes a dedicated multer setup for attachments, which means file upload is part of the message pipeline rather than a generic file service.

6. Media upload handling  
Uploads are routed through multer-specific config files and then likely forwarded to Cloudinary, as shown by `cloudinary.config.ts`. The user module has profile-picture upload support, and the message module has attachment upload support. This creates two main media paths: user avatars and chat attachments.

7. Real-time socket layer  
`src/socket.ts` and the `socket` module indicate a persistent websocket channel alongside the REST API. This is the likely path for live message delivery, chat presence, and call notifications. The frontend also has a `socketClient` wrapper, confirming the app depends on real-time events, not just polling.

8. Twilio calling subsystem  
The `twilio` module is a distinct integration boundary for audio/video calling. On the frontend there are separate `AudioCall.tsx` and `VideoCall.tsx` pages, plus call-related UI sounds and popups. That suggests call setup and signaling are initiated through the API/Twilio layer, while the UI handles call state and user experience.

9. Frontend application structure  
`circle-ui` is a React SPA using Vite. Routing is split into public and protected routes, with pages for home, login, signup, chat, image update, audio call, and video call. This mirrors the backend’s domain model and indicates the UI is organized around user auth plus a main authenticated messaging surface.

10. Client state and API integration  
The frontend has a small client layer in `src/lib` for API access, socket connection, time formatting, and error handling. Zustand stores (`useAuthStore`, `useVideoCallStore`) centralize app state for authentication and call state, so the UI is not purely component-local. This matters for the diagram because auth and call state are shared across multiple pages and overlays.

11. UI composition for messaging  
The chat UI is decomposed into message area, sender/receiver message bubbles, attachment rendering, and member-management components. This suggests the Chat page is the central authenticated workspace, with supporting components for conversation membership and message presentation rather than one large page component.

12. Deployment and containerization  
The backend has a Dockerfile, docker-compose setup, and a GitHub Actions deploy workflow. That indicates the server is expected to be containerized and deployed independently from the frontend, with CI/CD handling releases. The frontend is a separate Vite app, so the repo represents two deployable units connected by API and socket endpoints.

Overall, the key architecture boundary is: React UI in the browser talks to a TypeScript API server over REST and sockets; the server persists user/chat/message data, stores or proxies media uploads through Cloudinary, and integrates Twilio for calls. Redis, JWT/cookies, and Passport provide the infrastructure for stateful auth and real-time behavior.

Main entry points: [`circle-server/src/app.ts`](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-server/src/app.ts) (App wiring), [`circle-ui/src/pages`](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-ui/src/pages) (Pages), [`circle-server/src/config/db.ts`](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-server/src/config/db.ts) (Database), [`circle-server/src/config`](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-server/src/config) (Server config)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_server["circle-server"]
  node_server_entry["Server entry<br/>runtime<br/>[index.ts]"]
  node_server_app["App wiring<br/>express app<br/>[app.ts]"]
  node_server_config["Server config<br/>infrastructure"]
  node_server_utils["Shared utils<br/>support"]
  node_user_module["Users<br/>domain module"]
  node_chat_module["Chats<br/>domain module"]
  node_message_module["Messages<br/>domain module"]
  node_twilio_module["Twilio<br/>integration module"]
  node_socket_layer["Socket layer<br/>realtime<br/>[socket.ts]"]
  node_user_media["Profile upload<br/>upload pipeline<br/>[profile-picture.ts]"]
  node_message_media["Attachment upload<br/>upload pipeline"]
  node_db_dep[("Database<br/>persistence<br/>[db.ts]")]
  node_redis_dep[("Redis<br/>state store<br/>[redis.config.ts]")]
  node_cloudinary_dep[("Cloudinary<br/>media service")]
  node_server_models["Models"]
end

subgraph group_ui["circle-ui"]
  node_client_entry["Client app<br/>spa runtime<br/>[main.tsx]"]
  node_client_router["Routes<br/>navigation"]
  node_client_pages["Pages<br/>screens"]
  node_client_chat_ui["Chat UI<br/>composition"]
  node_client_shared_ui["Shared UI<br/>component library"]
  node_client_lib["Client lib<br/>api client"]
  node_auth_store["Auth store<br/>state store<br/>[useAuthStore.ts]"]
  node_call_store["Call store<br/>state store"]
end

subgraph group_ops["Delivery"]
  node_deploy_workflow["Deploy workflow<br/>ci/cd<br/>[deploy.yml]"]
  node_server_container["Server container<br/>containerization"]
end

node_server_entry -->|"starts"| node_server_app
node_server_app -->|"uses"| node_server_config
node_server_app -->|"uses"| node_server_utils
node_server_app -->|"routes to"| node_user_module
node_server_app -->|"routes to"| node_chat_module
node_server_app -->|"routes to"| node_message_module
node_server_app -->|"routes to"| node_twilio_module
node_server_app -->|"attaches"| node_socket_layer
node_user_module -->|"persists"| node_db_dep
node_chat_module -->|"persists"| node_db_dep
node_message_module -->|"persists"| node_db_dep
node_user_module -->|"uploads"| node_user_media
node_message_module -->|"uploads"| node_message_media
node_user_media -->|"stores in"| node_cloudinary_dep
node_message_media -->|"stores in"| node_cloudinary_dep
node_server_config -->|"connects"| node_redis_dep
node_server_config -->|"connects"| node_db_dep
node_client_entry -->|"loads"| node_client_router
node_client_router -->|"renders"| node_client_pages
node_client_pages -->|"composes"| node_client_chat_ui
node_client_pages -->|"uses"| node_client_shared_ui
node_client_pages -->|"calls"| node_client_lib
node_client_pages -->|"reads"| node_auth_store
node_client_pages -->|"reads"| node_call_store
node_client_lib -->|"connects to"| node_socket_layer
node_client_lib -->|"calls"| node_server_app
node_deploy_workflow -->|"builds"| node_server_container

click node_server_entry "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-server/src/index.ts"
click node_server_app "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-server/src/app.ts"
click node_server_config "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-server/src/config"
click node_server_utils "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-server/src/utils"
click node_user_module "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-server/src/modules/user"
click node_chat_module "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-server/src/modules/chat"
click node_message_module "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-server/src/modules/message"
click node_twilio_module "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-server/src/modules/twilio"
click node_socket_layer "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-server/src/socket.ts"
click node_user_media "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-server/src/modules/user/multer/profile-picture.ts"
click node_message_media "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-server/src/modules/message/multer/attachment.multer.ts"
click node_db_dep "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-server/src/config/db.ts"
click node_redis_dep "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-server/src/config/redis.config.ts"
click node_cloudinary_dep "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-server/src/config/cloudinary.config.ts"
click node_client_entry "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-ui/src/main.tsx"
click node_client_router "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-ui/src/routes"
click node_client_pages "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-ui/src/pages"
click node_client_chat_ui "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-ui/src/Components/chats"
click node_client_shared_ui "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-ui/src/Components/ui"
click node_client_lib "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-ui/src/lib"
click node_auth_store "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-ui/src/store/useAuthStore.ts"
click node_call_store "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-ui/src/store/useVideoCallStore.ts"
click node_deploy_workflow "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/.github/workflows/deploy.yml"
click node_server_container "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-server/Dockerfile"
click node_server_models "https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-server/src/modules"

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_server_entry,node_server_app,node_server_config,node_server_utils,node_user_module,node_chat_module,node_message_module,node_twilio_module,node_socket_layer,node_user_media,node_message_media,node_db_dep,node_redis_dep,node_cloudinary_dep,node_server_models toneBlue
class node_client_entry,node_client_router,node_client_pages,node_client_chat_ui,node_client_shared_ui,node_client_lib,node_auth_store,node_call_store toneAmber
class node_deploy_workflow,node_server_container toneMint
```

## Components

### circle-server

TypeScript API, realtime layer, and integrations

- [Server entry](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-server/src/index.ts): runtime · Bootstraps the HTTP API and wires the app/server runtime. · `circle-server/src/index.ts`
- [App wiring](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-server/src/app.ts): express app · Composes middleware, routes, and cross-cutting server setup. · `circle-server/src/app.ts`
- [Server config](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-server/src/config): infrastructure · Security, persistence, auth, upload, and cache configuration. · `circle-server/src/config`
- [Shared utils](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-server/src/utils): support · Reusable server helpers for JWTs, logging, error handling, and basic routes. · `circle-server/src/utils`
- [Users](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-server/src/modules/user): domain module · Authentication, profile management, and user-facing account flows. · `circle-server/src/modules/user`
- [Chats](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-server/src/modules/chat): domain module · Conversation membership and chat metadata. · `circle-server/src/modules/chat`
- [Messages](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-server/src/modules/message): domain module · Message creation, retrieval, and attachment-aware messaging. · `circle-server/src/modules/message`
- [Twilio](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-server/src/modules/twilio): integration module · Audio/video calling integration and call orchestration endpoints. · `circle-server/src/modules/twilio`
- [Socket layer](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-server/src/socket.ts): realtime · Persistent websocket channel for live events and call or chat signaling. · `circle-server/src/socket.ts`
- [Profile upload](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-server/src/modules/user/multer/profile-picture.ts): upload pipeline · Multer path for user avatar and profile image handling. · `circle-server/src/modules/user/multer/profile-picture.ts`
- [Attachment upload](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-server/src/modules/message/multer/attachment.multer.ts): upload pipeline · Multer path for chat message attachments. · `circle-server/src/modules/message/multer/attachment.multer.ts`
- [Database](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-server/src/config/db.ts): persistence · Primary server-side data store used by models and controllers. · `circle-server/src/config/db.ts`
- [Redis](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-server/src/config/redis.config.ts): state store · Auxiliary stateful dependency for caching or realtime coordination. · `circle-server/src/config/redis.config.ts`
- [Cloudinary](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-server/src/config/cloudinary.config.ts): media service · External media storage/proxy for uploaded images and attachments. · `circle-server/src/config/cloudinary.config.ts`
- [Models](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-server/src/modules): data models · Domain models beneath the server controllers for users, chats, and messages. · `circle-server/src/modules`

### circle-ui

React/Vite client application

- [Client app](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-ui/src/main.tsx): spa runtime · Vite entrypoint for the React single-page application. · `circle-ui/src/main.tsx`
- [Routes](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-ui/src/routes): navigation · Public and protected routing for authenticated and unauthenticated screens. · `circle-ui/src/routes`
- [Pages](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-ui/src/pages): screens · Top-level screens for home, chat, auth, uploads, and calling. · `circle-ui/src/pages`
- [Chat UI](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-ui/src/Components/chats): composition · Message area, bubbles, attachments, and member-management components. · `circle-ui/src/Components/chats`
- [Shared UI](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-ui/src/Components/ui): component library · Reusable buttons, modals, popups, loaders, and upload controls. · `circle-ui/src/Components/ui`
- [Client lib](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-ui/src/lib): api client · API wrapper, socket client, formatting helpers, and local error handling. · `circle-ui/src/lib`
- [Auth store](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-ui/src/store/useAuthStore.ts): state store · Client-side auth/session state shared across pages and routes. · `circle-ui/src/store/useAuthStore.ts`
- [Call store](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/circle-ui/src/store/useVideoCallStore.ts): state store · Client-side audio/video call state and signaling coordination. · `circle-ui/src/store/useVideoCallStore.ts`

### Delivery

Containerization and CI/CD

- [Deploy workflow](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/blob/dev/.github/workflows/deploy.yml): ci/cd · GitHub Actions deployment pipeline. · `.github/workflows/deploy.yml`
- [Server container](https://github.com/sharmasatyam121104-devloper/circle-communication-platform/tree/dev/circle-server/Dockerfile): containerization · Docker and compose setup for running the backend service. · `circle-server/Dockerfile`

## Connections

- Server entry → App wiring: starts · Bootstraps the app wiring from the server entrypoint.
- App wiring → Server config: uses · Loads security, persistence, auth, and upload configuration.
- App wiring → Shared utils: uses · Shares common middleware helpers and error handling.
- App wiring → Users: routes to · Mounts user/auth endpoints.
- App wiring → Chats: routes to · Mounts chat endpoints.
- App wiring → Messages: routes to · Mounts message endpoints.
- App wiring → Twilio: routes to · Mounts calling endpoints.
- App wiring → Socket layer: attaches · Enables realtime server behavior alongside HTTP routes.
- Users → Database: persists · Reads and writes account data.
- Chats → Database: persists · Stores conversation data.
- Messages → Database: persists · Stores message records.
- Users → Profile upload: uploads · Handles profile image uploads.
- Messages → Attachment upload: uploads · Handles attachment uploads.
- Profile upload → Cloudinary: stores in · Sends uploaded media to external storage.
- Attachment upload → Cloudinary: stores in · Sends uploaded media to external storage.
- Server config → Redis: connects · Configures Redis-backed shared state.
- Server config → Database: connects · Configures the primary database connection.
- Client app → Routes: loads · Initializes navigation and route selection.
- Routes → Pages: renders · Switches between public, chat, and call pages.
- Pages → Chat UI: composes · Builds the messaging workspace from chat components.
- Pages → Shared UI: uses · Reuses shared UI primitives across screens.
- Pages → Client lib: calls · Uses API and socket utilities for server communication.
- Pages → Auth store: reads · Consumes authentication state.
- Pages → Call store: reads · Consumes call state.
- Client lib → Socket layer: connects to · Socket client mirrors the server realtime channel.
- Client lib → App wiring: calls · REST API integration point.
- Deploy workflow → Server container: builds · CI/CD supports containerized backend deployment.