# E-Commerce Serang (Android App)

A mobile e-commerce platform built with **Kotlin** (Android) and a backend in **Express**, tailored for small businesses (UMKM). Supports browsing, ordering, chatting, and tracking — with **shipping cost calculation (RajaOngkir)** and **push notifications** via Firebase Cloud Messaging.

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## Overview

This Android app includes:

- Account registration, login, and OTP verification
- Browsing products by category and store
- Cart and checkout orders
- Shipping cost estimation via RajaOngkir API
- Checkout order, tracking, and status updates
- Real-time buyer–seller chat
- Store registration and product management
- Store Balance as active status
- Top up store balance
- Write rating and feedback for purchased products
- Push notifications for user activity

The app communicates with a custom backend server via REST API and WebSocket. The backend service is currently private and tailored for this project.


## Project Structure
├── api/retrofit/                          # API service and Retrofit client setup
├── data/                                  # Data layer (DTOs, responses, repositories)
├── di/                                    # Dependency injection modules (Hilt)
├── ui/                                    # User interface components
│   ├── auth/                              # Authentication screens
│   ├── home/                              # Home screen components
│   ├── cart/                              # Shopping cart functionality
│   ├── order/                             # Order management
│   ├── chat/                              # Chat features
│   ├── profile/                           # User profile
│   ├── product/                           # Product catalog
│   └── notif/                             # Push notifications handling
├── utils/                                 # Utility classes and helper functions

app/src/main/res/                          # Android resources

├── layout/                                # XML layout files
├── drawable/                              # Images and drawable resources
├── values/                                # Strings, colors, dimensions
└── navigation/                            # Navigation graph files

google-services.json                       # Firebase configuration for push notifications

## How to Run

1. Clone this project and open it in Android Studio
2. Add your `google-services.json` for Firebase (FCM)
3. Update the API base URL in the Retrofit client
5. Settings BASE_URL in your local.properties
4. Build and run on an emulator or physical device