:data/dev.atick.data.model.home/Jetpack

Jetpack

data class Jetpack(val id: String = UUID.randomUUID().toString(), val name: String = String(), val price: Double = 0.0, val lastUpdated: Long = System.currentTimeMillis(), val lastSynced: Long = 0, val needsSync: Boolean = true, val formattedDate: String = lastUpdated.asFormattedDateTime())

Domain model representing a Jetpack library item in the application's data layer.

This is the core domain model used throughout the app for representing Jetpack library entries. It sits between the database layer (JetpackEntity) and the remote layer (FirebaseJetpack), serving as the single source of truth that the UI layer observes.

The model supports offline-first architecture with sync tracking:

lastUpdated: Timestamp when the item was modified locally
lastSynced: Timestamp of the last successful sync with Firebase
needsSync: Flag indicating if local changes need to be pushed to Firebase

Mapping extensions are provided to convert between layers:

toJetpackEntity: Convert to Room database entity for local storage
toFirebaseJetpack: Convert to Firebase document for remote storage
JetpackEntity.toJetpack: Convert from Room entity to domain model
FirebaseJetpack.toJetpackEntity: Convert from Firebase to Room entity

Usage context:

UI layer displays lists and details of Jetpack items via dev.atick.feature.home.ui.home.HomeViewModel
Repository returns Flow> as the single source of truth
ViewModel wraps Jetpack data in dev.atick.feature.home.ui.home.HomeScreenData
Background sync uses needsSync flag to identify items requiring upload

Parameters

Unique identifier (UUID) for the Jetpack item, consistent across all layers.

name

Display name of the Jetpack library (e.g., "Compose", "Room", "Hilt").

price

Numeric value representing the item's price (demo field for CRUD operations).

lastUpdated

Unix timestamp (milliseconds) of the last local modification.

lastSynced

Unix timestamp (milliseconds) of the last successful Firebase sync.

needsSync

Boolean flag indicating if local changes haven't been synced to Firebase.

formattedDate

Human-readable date string derived from lastUpdated for UI display.

Constructors

Jetpack

constructor(id: String = UUID.randomUUID().toString(), name: String = String(), price: Double = 0.0, lastUpdated: Long = System.currentTimeMillis(), lastSynced: Long = 0, needsSync: Boolean = true, formattedDate: String = lastUpdated.asFormattedDateTime())