latest reading, recent history and authentication features

.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties

app/.gitignore

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+/build

app/build.gradle

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+plugins {
+    id 'com.android.application'
+    id 'org.jetbrains.kotlin.android'
+    id 'kotlin-kapt'
+    id 'com.google.dagger.hilt.android'
+    id 'com.google.gms.google-services'
+}
+
+android {
+    namespace 'com.tuf2000m.energymeter'
+    compileSdk 34
+
+    defaultConfig {
+        applicationId "com.tuf2000m.energymeter"
+        minSdk 24
+        targetSdk 34
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_17
+        targetCompatibility JavaVersion.VERSION_17
+    }
+
+    kotlinOptions {
+        jvmTarget = '17'
+    }
+
+    buildFeatures {
+        dataBinding true
+        viewBinding true
+    }
+}
+
+dependencies {
+    implementation 'androidx.core:core-ktx:1.12.0'
+    implementation 'androidx.appcompat:appcompat:1.6.1'
+    implementation 'com.google.android.material:material:1.9.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
+
+    // Retrofit
+    def retrofitVersion = '2.9.0'
+    implementation "com.squareup.retrofit2:retrofit:$retrofitVersion"
+    implementation "com.squareup.retrofit2:converter-gson:$retrofitVersion"
+    implementation "com.squareup.okhttp3:okhttp:4.9.3"
+    implementation "com.squareup.okhttp3:logging-interceptor:4.9.3"
+
+    // Hilt
+    def hiltVersion = '2.44'
+    implementation("com.google.dagger:hilt-android:$hiltVersion")
+    kapt "com.google.dagger:hilt-android-compiler:$hiltVersion"
+
+    // Coroutines
+    def coroutineVersion = '1.5.2'
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:$coroutineVersion"
+
+    // Kotlin Extensions
+    implementation "androidx.activity:activity-ktx:1.8.0"
+    implementation "androidx.fragment:fragment-ktx:1.6.1"
+    implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.6.2"
+    implementation "androidx.lifecycle:lifecycle-runtime-ktx:2.6.2"
+    implementation 'androidx.savedstate:savedstate:1.2.1'
+
+    // Firebase
+    implementation(platform("com.google.firebase:firebase-bom:32.3.1"))
+    implementation("com.google.firebase:firebase-auth-ktx")
+
+    // Navigation Components
+    implementation "androidx.navigation:navigation-fragment-ktx:2.2.1"
+    implementation "androidx.navigation:navigation-ui:2.7.4"
+}

app/google-services.json

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+{
+  "project_info": {
+    "project_number": "154914327689",
+    "project_id": "tuf-2000mmobileapp",
+    "storage_bucket": "tuf-2000mmobileapp.appspot.com"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:154914327689:android:5e7ed85d6e06c7e71d0a58",
+        "android_client_info": {
+          "package_name": "com.tuf2000m.energymeter"
+        }
+      },
+      "oauth_client": [],
+      "api_key": [
+        {
+          "current_key": "AIzaSyDVbXOCACRUmIahXhLIYgljK4x8YOow1Ys"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": []
+        }
+      }
+    },
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:154914327689:android:088275fa4f98382f1d0a58",
+        "android_client_info": {
+          "package_name": "com.venkat.tuf2000m"
+        }
+      },
+      "oauth_client": [],
+      "api_key": [
+        {
+          "current_key": "AIzaSyDVbXOCACRUmIahXhLIYgljK4x8YOow1Ys"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": []
+        }
+      }
+    }
+  ],
+  "configuration_version": "1"
+}

app/proguard-rules.pro

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

app/src/androidTest/java/com/tuf2000m/energymeter/ExampleInstrumentedTest.kt

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+package com.tuf2000m.energymeter
+
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.platform.app.InstrumentationRegistry
+import org.junit.Assert.*
+import org.junit.Test
+import org.junit.runner.RunWith
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("com.tuf2000m.energymeter", appContext.packageName)
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <!-- Required permissions -->
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <application
+        android:name=".MyApplication"
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.MeterReader"
+        tools:targetApi="31">
+
+        <!-- Main activity -->
+        <activity
+            android:name=".EnergyMeterActivity"
+            android:exported="true">
+
+            <!-- Intent filter for main action -->
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+    </application>
+
+</manifest>

app/src/main/java/com/tuf2000m/energymeter/EnergyMeterActivity.kt

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+package com.tuf2000m.energymeter
+
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import com.tuf2000m.energymeter.databinding.ActivityMainBinding
+import dagger.hilt.android.AndroidEntryPoint
+
+@AndroidEntryPoint
+class EnergyMeterActivity : AppCompatActivity() {
+    private lateinit var binding: ActivityMainBinding
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = ActivityMainBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+    }
+
+}

app/src/main/java/com/tuf2000m/energymeter/MyApplication.kt

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+package com.tuf2000m.energymeter
+
+import android.app.Application
+import com.google.firebase.FirebaseApp
+import dagger.hilt.android.HiltAndroidApp
+
+@HiltAndroidApp
+class MyApplication : Application() {
+    override fun onCreate() {
+        super.onCreate()
+        FirebaseApp.initializeApp(this)
+    }
+}

app/src/main/java/com/tuf2000m/energymeter/base/BaseRepository.kt

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+package com.tuf2000m.energymeter.base
+
+import com.tuf2000m.energymeter.data.remote.NetworkResult
+import kotlinx.coroutines.flow.flow
+import retrofit2.HttpException
+import java.io.IOException
+
+abstract class BaseRepository {
+
+    /**
+     * Executes a safe API call using Kotlin Flow.
+     *
+     * @param apiCall The API call to be executed.
+     * @return Flow emitting [NetworkResult] with the API response or error.
+     */
+    suspend fun <T> safeApiCall(apiCall: suspend () -> T) = flow {
+        try {
+            emit(NetworkResult.Loading(true))
+            emit(NetworkResult.Success(apiCall.invoke()))
+        } catch (e: HttpException) {
+            emit(
+                NetworkResult.Failure(
+                    e.localizedMessage ?: "Something went wrong, please try again later."
+                )
+            )
+        } catch (e: IOException) {
+            emit(NetworkResult.Failure("No Internet. Please check your internet connection."))
+        } catch (e: Exception) {
+            emit(NetworkResult.Failure(e.localizedMessage ?: "Error"))
+        }
+    }
+}

app/src/main/java/com/tuf2000m/energymeter/data/model/auth/AuthResult.kt

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+package com.tuf2000m.energymeter.data.model.auth
+
+import com.google.firebase.auth.FirebaseUser
+
+sealed class AuthResult {
+    data class Success(val user: FirebaseUser?) : AuthResult()
+    data class Failure(val exception: Exception?) : AuthResult()
+}