# ayyan-sufian/chat-sphere architecture

> Architecture diagram of the GitHub repository ayyan-sufian/chat-sphere, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-25). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/ayyan-sufian/chat-sphere
- Repository: https://github.com/ayyan-sufian/chat-sphere

## Overview

Chat-sphere is a Flutter messaging app; the README itself only identifies it as a starter project, while the source tree names authentication, people/friendship, chat, profile, and notification features. The likely user journey is sign-in, find or connect with people, then chat and review notifications. The graph follows the Dart feature structure and Firebase plugin evidence, but Dart implementations were not sampled, so feature-to-controller and controller-to-service wiring is not asserted.

Main entry points: [`lib/main.dart`](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/main.dart) (Flutter entry), [`lib/services/firestore_service.dart`](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/services/firestore_service.dart) (Firestore service), [`lib/services/auth_service.dart`](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/services/auth_service.dart) (Authentication service), [`lib/routes/app_pages.dart`](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/routes/app_pages.dart) (App routes)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_app["App shell"]
  node_entry["Flutter entry<br/>[main.dart]"]
  node_routing["App routes<br/>[app_pages.dart]"]
  node_route_names["Route names<br/>[app_routes.dart]"]
  node_home["Home coordination"]
  node_firestore["Firestore service"]
  node_domain_models["Chat and user models"]
end

subgraph group_identity["Identity and profile"]
  node_auth_view["Sign-in and registration<br/>[login_screen.dart]"]
  node_register_view["Registration screen"]
  node_auth_controller["Authentication controller"]
  node_auth_service["Authentication service<br/>[auth_service.dart]"]
  node_profile["Profile management"]
  node_password["Password recovery"]
end

subgraph group_connections["People and connections"]
  node_people["People search"]
  node_friend_requests["Friend requests"]
  node_friends["Friends list"]
end

subgraph group_messaging["Messaging and alerts"]
  node_chat["Chat controller"]
  node_chat_view["Chat screen<br/>[chat_screen.dart]"]
  node_notifications["Notifications"]
end

node_user(("App user"))
node_firebase_auth[("Firebase Authentication")]
node_firebase_store[("Cloud Firestore")]

node_user -->|"opens app"| node_entry
node_entry -->|"starts routes"| node_routing
node_user -->|"signs in"| node_auth_view
node_user -->|"registers"| node_register_view
node_user -->|"finds people"| node_people
node_user -->|"manages requests"| node_friend_requests
node_user -->|"views friends"| node_friends
node_user -->|"chats"| node_chat_view
node_user -->|"updates profile"| node_profile
node_user -->|"checks alerts"| node_notifications
node_auth_service -.->|"authenticates"| node_firebase_auth
node_firestore -.->|"accesses data"| node_firebase_store

click node_entry "https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/main.dart"
click node_routing "https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/routes/app_pages.dart"
click node_route_names "https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/routes/app_routes.dart"
click node_auth_view "https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/view/login_screen.dart"
click node_register_view "https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/view/register_screen.dart"
click node_auth_controller "https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/controllers/auth_controller.dart"
click node_auth_service "https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/services/auth_service.dart"
click node_profile "https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/controllers/profile_controller.dart"
click node_password "https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/controllers/forget_password_controller.dart"
click node_people "https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/controllers/user_list_controller.dart"
click node_friend_requests "https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/controllers/friend_request_controller.dart"
click node_friends "https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/controllers/friends_controller.dart"
click node_home "https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/controllers/home_controller.dart"
click node_chat "https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/controllers/chat_controller.dart"
click node_chat_view "https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/view/chat_screen.dart"
click node_notifications "https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/controllers/notification_controller.dart"
click node_firestore "https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/services/firestore_service.dart"
click node_domain_models "https://github.com/ayyan-sufian/chat-sphere/tree/main/lib/models"

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_entry,node_routing,node_route_names,node_home,node_firestore,node_domain_models,node_user toneBlue
class node_auth_view,node_register_view,node_auth_controller,node_auth_service,node_profile,node_password,node_firebase_auth,node_firebase_store toneAmber
class node_people,node_friend_requests,node_friends toneMint
class node_chat,node_chat_view,node_notifications toneRose
```

## Components

### App shell

- [Flutter entry](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/main.dart): `lib/main.dart`
- [App routes](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/routes/app_pages.dart): `lib/routes/app_pages.dart`
- [Route names](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/routes/app_routes.dart): `lib/routes/app_routes.dart`
- [Home coordination](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/controllers/home_controller.dart): `lib/controllers/home_controller.dart`
- [Firestore service](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/services/firestore_service.dart): `lib/services/firestore_service.dart`
- [Chat and user models](https://github.com/ayyan-sufian/chat-sphere/tree/main/lib/models): `lib/models`

### Identity and profile

- [Sign-in and registration](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/view/login_screen.dart): `lib/view/login_screen.dart`
- [Registration screen](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/view/register_screen.dart): `lib/view/register_screen.dart`
- [Authentication controller](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/controllers/auth_controller.dart): `lib/controllers/auth_controller.dart`
- [Authentication service](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/services/auth_service.dart): `lib/services/auth_service.dart`
- [Profile management](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/controllers/profile_controller.dart): `lib/controllers/profile_controller.dart`
- [Password recovery](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/controllers/forget_password_controller.dart): `lib/controllers/forget_password_controller.dart`

### People and connections

- [People search](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/controllers/user_list_controller.dart): `lib/controllers/user_list_controller.dart`
- [Friend requests](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/controllers/friend_request_controller.dart): `lib/controllers/friend_request_controller.dart`
- [Friends list](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/controllers/friends_controller.dart): `lib/controllers/friends_controller.dart`

### Messaging and alerts

- [Chat controller](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/controllers/chat_controller.dart): `lib/controllers/chat_controller.dart`
- [Chat screen](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/view/chat_screen.dart): `lib/view/chat_screen.dart`
- [Notifications](https://github.com/ayyan-sufian/chat-sphere/blob/main/lib/controllers/notification_controller.dart): `lib/controllers/notification_controller.dart`

### Other components

- **App user**
- **Firebase Authentication**
- **Cloud Firestore**

## Connections

- App user → Flutter entry: opens app
- Flutter entry → App routes: starts routes
- App user → Sign-in and registration: signs in
- App user → Registration screen: registers
- App user → People search: finds people
- App user → Friend requests: manages requests
- App user → Friends list: views friends
- App user → Chat screen: chats
- App user → Profile management: updates profile
- App user → Notifications: checks alerts
- Authentication service → Firebase Authentication: authenticates
- Firestore service → Cloud Firestore: accesses data