Lock Configuration App

A demo Android application that lets a service technician configure lock parameters on a double‑door (primary & secondary leaves). Built with Kotlin, Jetpack Compose, Hilt DI, Room persistence, Clean Architecture and MVVM.

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Features

• List & Search
  – Show all lock parameters for the selected door leaf
  – Filter by parameter name or current value
  – Pull‑to‑refresh to re‑fetch from network (on feature/network branch)

• Edit Screen
  – Edit each parameter for both Primary & Secondary doors in one screen
  – Discrete parameters (radio buttons) and range parameters (integer slider)
  – Save per‑leaf values locally in Room

• Offline Support
  – On the main branch, JSON is loaded from assets/lock_config.json
  – On the feature/network branch, JSON is fetched via Retrofit, cached in Room, and subsequent loads come from the database

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Architecture

We follow Clean Architecture & MVVM, split into three layers

• Dependency Injection: Hilt modules under di/
  – DatabaseModule provides the singleton AppDatabase
  – LockConfigDatabaseModule provides ParamValueDao
  – NetworkModule (on feature/network) provides Retrofit & API
  – RepositoryModule binds LockConfigRepositoryImpl to LockConfigRepository

• Reactive streams via KotlinFlow for definitions, saved values, and filtered results.

• Compose UI with state hoisting, reusable components, and previews.

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Branches

• main
  – Loads the lock-configuration JSON from app/src/main/assets/lock_config.json
  – Parses with Gson → Domain models → seeds Room on first load
  – All reads & filters come from Room & in‑memory definitions

• featurenetwork
  – Adds LockConfigApi & NetworkModule
  – On startup (and on pull‑to‑refresh) fetches JSON from a real API
  – Clears & re‑seeds Room with defaults from the network response
  – Subsequent reads come from Room database until next refresh

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Getting Started

Prerequisites:

• Android Studio Flamingo or later
• Kotlin 1.9.0+, Android Gradle Plugin 8.1+
• minSdk 29, targetSdk 36

Clone & run: git clone https://github.com/pandimani17/assatask.git