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Initial commit: RetailEase, A POS billing system with Room, Hilt, Biometric auth and much more..
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‎.gitignore‎

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*.iml
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.gradle
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/local.properties
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/.idea/caches
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/.idea/libraries
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/.idea/modules.xml
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/.idea/workspace.xml
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/.idea/navEditor.xml
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/.idea/assetWizardSettings.xml
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.DS_Store
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/build
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/captures
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.externalNativeBuild
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.cxx
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local.properties
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*.apk
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*.aar
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*.ap_
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*.aab
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*.dex
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*.class
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bin/
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gen/
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out/
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build/
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.gradle/
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app/release/*
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*.log
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captures/
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.navigation/
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.idea/
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.idea/workspace.xml
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.idea/tasks.xml
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.idea/gradle.xml
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.idea/assetWizardSettings.xml
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.idea/dictionaries
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.idea/libraries
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.idea/jarRepositories.xml
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.idea/compiler.xml
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.idea/modules.xml
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.idea/.name
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.idea/misc.xml
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.idea/deploymentTargetDropDown.xml
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.idea/render.experimental.xml
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.idea/caches/
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.idea/navEditor.xml
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.idea/inspectionProfiles/
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# Windows-specific files
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Thumbs.db
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ehthumbs.db
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Desktop.ini
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‎app/.gitignore‎

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/build

‎app/build.gradle.kts‎

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plugins {
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alias(libs.plugins.android.application)
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alias(libs.plugins.kotlin.android)
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id("com.google.devtools.ksp")
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id("com.google.dagger.hilt.android")
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alias(libs.plugins.compose.compiler)
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kotlin("plugin.serialization") version "2.0.21"
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}
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android {
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namespace = "com.example.retailease"
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compileSdk = 35
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defaultConfig {
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applicationId = "com.example.retailease"
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minSdk = 24
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targetSdk = 35
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versionCode = 1
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versionName = "1.0"
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testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
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vectorDrawables {
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useSupportLibrary = true
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}
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}
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buildTypes {
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release {
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isMinifyEnabled = false
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proguardFiles(
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getDefaultProguardFile("proguard-android-optimize.txt"),
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"proguard-rules.pro"
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)
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}
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}
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compileOptions {
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sourceCompatibility = JavaVersion.VERSION_1_8
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targetCompatibility = JavaVersion.VERSION_1_8
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}
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kotlinOptions {
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jvmTarget = "1.8"
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}
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buildFeatures {
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compose = true
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}
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composeOptions {
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kotlinCompilerExtensionVersion = "1.5.1"
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}
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packaging {
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resources {
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excludes += "/META-INF/{AL2.0,LGPL2.1}"
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}
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}
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}
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dependencies {
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// google fonts library
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implementation(libs.androidx.ui.text.google.fonts)
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// Hilt Implementation
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implementation("com.google.dagger:hilt-android:2.56.2")
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ksp("com.google.dagger:hilt-android-compiler:2.56.2")
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implementation("androidx.hilt:hilt-navigation-compose:1.2.0")
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// Room Implementation
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val room_version = "2.7.1"
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implementation("androidx.room:room-runtime:$room_version")
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ksp("androidx.room:room-compiler:$room_version")
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implementation("androidx.room:room-ktx:$room_version")
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// DataStore
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implementation("androidx.datastore:datastore-preferences:1.1.7")
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// Coil Dependency
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implementation("io.coil-kt.coil3:coil-compose:3.1.0")
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implementation("io.coil-kt.coil3:coil-network-okhttp:3.1.0")
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// Material Icons Extended
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implementation("androidx.compose.material:material-icons-extended")
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// Navigation-Compose
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val nav_version = "2.9.0"
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implementation("androidx.navigation:navigation-compose:$nav_version")
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// ECS/POS for Print
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implementation("com.github.DantSu:ESCPOS-ThermalPrinter-Android:3.3.0")
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// Json Serialization for backup
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implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.8.1")
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// Biometric
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implementation ("androidx.biometric:biometric:1.1.0")
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implementation("androidx.appcompat:appcompat:1.7.1")
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implementation(libs.androidx.core.ktx)
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implementation(libs.androidx.lifecycle.runtime.ktx)
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implementation(libs.androidx.activity.compose)
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implementation(platform(libs.androidx.compose.bom))
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implementation(libs.androidx.ui)
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implementation(libs.androidx.ui.graphics)
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implementation(libs.androidx.ui.tooling.preview)
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implementation(libs.androidx.material3)
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testImplementation(libs.junit)
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androidTestImplementation(libs.androidx.junit)
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androidTestImplementation(libs.androidx.espresso.core)
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androidTestImplementation(platform(libs.androidx.compose.bom))
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androidTestImplementation(libs.androidx.ui.test.junit4)
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debugImplementation(libs.androidx.ui.tooling)
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debugImplementation(libs.androidx.ui.test.manifest)
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implementation(kotlin("script-runtime"))
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}

‎app/proguard-rules.pro‎

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# Add project specific ProGuard rules here.
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# You can control the set of applied configuration files using the
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# proguardFiles setting in build.gradle.
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#
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# For more details, see
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# http://developer.android.com/guide/developing/tools/proguard.html
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# If your project uses WebView with JS, uncomment the following
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# and specify the fully qualified class name to the JavaScript interface
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# class:
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#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
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# public *;
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#}
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# Uncomment this to preserve the line number information for
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# debugging stack traces.
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#-keepattributes SourceFile,LineNumberTable
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# If you keep the line number information, uncomment this to
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# hide the original source file name.
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#-renamesourcefileattribute SourceFile

‎app/src/androidTest/java/com/example/retailease/ExampleInstrumentedTest.kt‎

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package com.example.retailease
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import androidx.test.platform.app.InstrumentationRegistry
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import androidx.test.ext.junit.runners.AndroidJUnit4
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import org.junit.Test
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import org.junit.runner.RunWith
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import org.junit.Assert.*
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/**
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* Instrumented test, which will execute on an Android device.
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*
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* See [testing documentation](http://d.android.com/tools/testing).
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*/
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@RunWith(AndroidJUnit4::class)
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class ExampleInstrumentedTest {
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@Test
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fun useAppContext() {
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// Context of the app under test.
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val appContext = InstrumentationRegistry.getInstrumentation().targetContext
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assertEquals("com.example.retailease", appContext.packageName)
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}
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}

‎app/src/main/AndroidManifest.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:tools="http://schemas.android.com/tools">
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<uses-feature android:name="android.hardware.usb.host"/>
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<uses-permission android:name="android.permission.INTERNET"/>
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<uses-permission android:name="android.permission.BLUETOOTH"/>
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<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
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<uses-permission android:name="android.permission.BLUETOOTH_CONNECT"/>
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<uses-permission android:name="android.permission.BLUETOOTH_SCAN"/>
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<uses-permission android:name="android.permission.VIBRATE"/>
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<application
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android:allowBackup="true"
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android:dataExtractionRules="@xml/data_extraction_rules"
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android:fullBackupContent="@xml/backup_rules"
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android:icon="@mipmap/ic_launcher"
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android:label="@string/app_name"
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android:name=".di.RetailEaseApp"
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android:roundIcon="@mipmap/ic_launcher_round"
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android:supportsRtl="true"
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android:theme="@style/Theme.RetailEase"
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tools:targetApi="31">
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<activity
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android:name=".MainActivity"
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android:exported="true"
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android:windowSoftInputMode="adjustResize"
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android:label="@string/app_name"
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android:theme="@style/Theme.RetailEase">
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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</application>
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</manifest>

‎app/src/main/ic_launcher-playstore.png‎

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‎app/src/main/java/com/example/retailease/MainActivity.kt‎

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package com.example.retailease
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import android.os.Bundle
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import androidx.activity.compose.setContent
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import androidx.activity.enableEdgeToEdge
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import androidx.appcompat.app.AppCompatActivity
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import com.example.retailease.ui.RetailEaseMain
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import com.example.retailease.ui.theme.RetailEaseTheme
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import dagger.hilt.android.AndroidEntryPoint
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@AndroidEntryPoint
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class MainActivity : AppCompatActivity() {
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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enableEdgeToEdge()
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setContent {
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RetailEaseTheme {
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RetailEaseMain()
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}
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}
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}
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}
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‎app/src/main/java/com/example/retailease/backup/RetailEaseBackup.kt‎

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package com.example.retailease.backup
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import com.example.retailease.models.Product
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import com.example.retailease.models.Salesman
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import com.example.retailease.models.WholesaleProduct
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import kotlinx.serialization.Serializable
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@Serializable
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data class RetailEaseBackup(
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val products : List<Product>,
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val wholesaleProducts: List<WholesaleProduct>,
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val salesmen: List<Salesman>,
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)

‎app/src/main/java/com/example/retailease/datasource/dao/CustomerDao.kt‎

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package com.example.retailease.datasource.dao
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import androidx.room.Dao
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import androidx.room.Delete
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import androidx.room.Insert
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import androidx.room.OnConflictStrategy
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import androidx.room.Query
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import com.example.retailease.models.Customer
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import com.example.retailease.models.Employee
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import kotlinx.coroutines.flow.Flow
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@Dao
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interface CustomerDao {
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@Insert(onConflict = OnConflictStrategy.REPLACE)
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suspend fun insertCustomer(customer: Customer)
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@Delete
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suspend fun deleteCustomer(customer: Customer)
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@Query("SELECT * FROM customers where customerId = :customerId")
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suspend fun getCustomerById(customerId: Int): Customer
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@Query("SELECT * FROM customers")
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fun getAllCustomers(): Flow<List<Customer>>
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@Insert
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suspend fun insertEmployee(employee: Employee)
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}

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