FCHAT APP(Chat App - Getx)

🧩 Overview – FChat

FChat is a modular, feature-oriented Flutter chat application built with GetX for reactive state management, navigation, and dependency injection. It leverages Firebase services including Firestore, Firebase Auth, Cloud Storage, and FCM to enable real-time messaging, authentication, and location-aware features.

The app is structured around self-contained feature modules (e.g., chat, contact, sign_in) with each feature managing its own controller, view, state, and binding logic. Shared components like UI widgets, helper utilities, API services, and entities are grouped under the common/ directory for global reuse.

🚧 My Role : Mobile Developer (Full-Stack)

🔍 Key Characteristics

• ✅ GetX-centric architecture for state, lifecycle, navigation, and DI\

• ✅ Feature-first project structure for clear separation and scalability

• ✅ Firebase integration: real-time Firestore, auth, file uploads, and messaging

• ✅ Reusable shared modules: ApiService, utils, custom widgets, route middleware

• ✅ Location support: integrates with Google Maps API to convert coordinates into addresses

• ✅ Dio-based HTTP layer: handles external API calls with support for headers, tokens, and error handling

FChat/

├── main.dart                   // Entry point

├── common/                    // Shared code across features

└── feature/                   // Modular feature-based code (GetX-driven)

🔧 Core Modules

common/

• entities/: Shared models like User, Message, MyLocation

• helpers/: Utilities like string formatters and file helpers

• middlewares/: Navigation redirection logic

• service/: Handles HTTP requests via Dio with support for auth, headers, and external APIs (e.g. Google Maps - geocode)

• routes/: Centralized route naming and screen mapping

• widget/: Reusable UI components like buttons, app bars, and toasts

🔄 Key Controllers & Responsibilities

ContactController

• Loads contact list from Firestore (excluding self)

• Navigates to chat with user

• Ensures chat vessel exists in Firestore
  
  

ApplicationController

• Manages page/tab changes

• Controls bottom navigation bar

MessageController

• Loads messages related to the current user

• Fetches and updates user location and FCM token

ChatController

• Sends/receives messages (text and image)

• Uses Firestore streams for real-time chat

• Manages recipient location tracking and image upload

SignInController

• Handles Google Sign-In via FirebaseAuth

• Registers new users in Firestore if needed

🔐 Middleware & Services

• RouteWelcomeMiddleware: Redirects users based on auth or first-time use

• ApiService: Unified HTTP client using Dio, with flexible request/response handling

🧠 Utilities

From utils.dart:

• Random string generator

• File extension parser

• Human-readable time formatting (5m ago, 2h ago)

• Custom date formatters (dd-MM, dd-MM-yyyy)

• Debug print wrapper

This is a self-initiated project and the source code is not open-source or publicly accessible. However, if you're interested in hiring or collaborating, I'm open to discussing the architecture, development approach, and walking you through how I built it in a scheduled session.