Merge pull request #2 from Rifzzu/main

update 1

.gitattributes

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+# Auto detect text files and perform LF normalization
+* text=auto

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 'com.google.gms.google-services'
+}
+
+android {
+    namespace 'com.example.buzzwiseapp'
+    compileSdk 33
+
+    defaultConfig {
+        applicationId "com.example.buzzwiseapp"
+        minSdk 24
+        targetSdk 33
+        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_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    buildFeatures {
+        viewBinding true
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.core:core-ktx:1.7.0'
+    implementation 'androidx.appcompat:appcompat:1.6.1'
+    implementation 'com.google.android.material:material:1.7.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    implementation 'androidx.navigation:navigation-fragment-ktx:2.5.3'
+    implementation 'androidx.navigation:navigation-ui-ktx:2.5.3'
+    implementation 'androidx.annotation:annotation:1.3.0'
+    implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.6.1'
+    implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.6.1'
+    implementation 'com.google.firebase:firebase-auth-ktx:21.0.3'
+    implementation 'com.google.firebase:firebase-auth:21.0.3'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
+
+    //Library Google GMS
+    implementation 'com.google.android.gms:play-services-auth:20.1.0'
+}

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/example/buzzwiseapp/ExampleInstrumentedTest.kt

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+package com.example.buzzwiseapp
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * 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.example.buzzwiseapp", 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">
+
+    <application
+        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:supportsRtl="true"
+        android:theme="@style/Theme.BuzzWiseApp"
+        tools:targetApi="31">
+        <activity
+            android:name=".ui.auth.RegisterActivity"
+            android:exported="false" />
+        <activity
+            android:name=".ui.auth.LoginActivity"
+            android:exported="false">
+
+        </activity>
+        <activity
+            android:name=".ui.SplashActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity
+            android:name=".ui.main.MainActivity"
+            android:exported="false"
+            android:label="@string/app_name"
+            android:theme="@style/Theme.BuzzWiseApp" />
+        <activity
+            android:name=".ui.auth.AuthActivity"
+            android:exported="true">
+
+        </activity>
+
+    </application>
+
+</manifest>

app/src/main/java/com/example/buzzwiseapp/ui/SplashActivity.kt

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+package com.example.buzzwiseapp.ui
+
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import com.example.buzzwiseapp.R
+import com.example.buzzwiseapp.databinding.ActivitySplashBinding
+import com.example.buzzwiseapp.ui.auth.LoginActivity
+import com.google.firebase.auth.FirebaseAuth
+import com.google.firebase.auth.ktx.auth
+import com.google.firebase.ktx.Firebase
+
+class SplashActivity : AppCompatActivity() {
+
+    private lateinit var binding: ActivitySplashBinding
+    private lateinit var auth: FirebaseAuth
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = ActivitySplashBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        auth = Firebase.auth
+        val firebaseUser = auth.currentUser
+
+        if (firebaseUser != null) {
+            // Not signed in, launch the Login activity
+            startActivity(Intent(this, LoginActivity::class.java))
+            finish()
+            return
+        }
+
+        binding.elevatedButton.setOnClickListener{
+            val intent = Intent(this, LoginActivity::class.java)
+            startActivity(intent)
+        }
+    }
+}

app/src/main/java/com/example/buzzwiseapp/ui/auth/AuthActivity.kt

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+package com.example.buzzwiseapp.ui.auth
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import androidx.navigation.findNavController
+import androidx.navigation.ui.AppBarConfiguration
+import androidx.navigation.ui.navigateUp
+import androidx.navigation.ui.setupActionBarWithNavController
+import com.example.buzzwiseapp.R
+import com.example.buzzwiseapp.databinding.ActivityAuthBinding
+
+class AuthActivity : AppCompatActivity() {
+
+    private lateinit var appBarConfiguration: AppBarConfiguration
+    private lateinit var binding: ActivityAuthBinding
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        binding = ActivityAuthBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        setSupportActionBar(binding.toolbar)
+
+        val navController = findNavController(R.id.container_auth)
+        appBarConfiguration = AppBarConfiguration(navController.graph)
+        setupActionBarWithNavController(navController, appBarConfiguration)
+
+    }
+
+    override fun onSupportNavigateUp(): Boolean {
+        val navController = findNavController(R.id.container_auth)
+        return navController.navigateUp(appBarConfiguration) || super.onSupportNavigateUp()
+    }
+}

app/src/main/java/com/example/buzzwiseapp/ui/auth/LoginActivity.kt

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+package com.example.buzzwiseapp.ui.auth
+
+import android.app.Activity
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.util.Log
+import androidx.activity.result.contract.ActivityResultContracts
+import com.example.buzzwiseapp.R
+import com.example.buzzwiseapp.databinding.ActivityLoginBinding
+import com.example.buzzwiseapp.ui.main.MainActivity
+import com.google.android.gms.auth.api.signin.GoogleSignIn
+import com.google.android.gms.auth.api.signin.GoogleSignInClient
+import com.google.android.gms.auth.api.signin.GoogleSignInOptions
+import com.google.android.gms.common.api.ApiException
+import com.google.firebase.auth.FirebaseAuth
+import com.google.firebase.auth.FirebaseUser
+import com.google.firebase.auth.GoogleAuthProvider
+import com.google.firebase.auth.ktx.auth
+import com.google.firebase.ktx.Firebase
+
+class LoginActivity : AppCompatActivity() {
+
+    private lateinit var binding: ActivityLoginBinding
+    private lateinit var googleSignInClient: GoogleSignInClient
+    private lateinit var auth: FirebaseAuth
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = ActivityLoginBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        supportActionBar?.hide()
+
+        binding.buttonLogin.setOnClickListener{
+            Intent(this, MainActivity::class.java).also { intent ->
+                startActivity(intent)
+                finish()
+            }
+        }
+
+        binding.buttonToRegister.setOnClickListener {
+            val intent = Intent(this@LoginActivity, RegisterActivity::class.java)
+            startActivity(intent)
+        }
+
+        binding.signInButton.setOnClickListener{
+            signIn()
+        }
+
+        // Configure Google Sign In
+        val gso = GoogleSignInOptions
+            .Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
+            .requestIdToken(getString(R.string.default_web_client_id))
+            .requestEmail()
+            .build()
+        googleSignInClient = GoogleSignIn.getClient(this, gso)
+        // Initialize Firebase Auth
+        auth = Firebase.auth
+    }
+
+    private fun signIn() {
+        val signInIntent = googleSignInClient.signInIntent
+        resultLauncher.launch(signInIntent)
+    }
+
+    private var resultLauncher = registerForActivityResult(
+        ActivityResultContracts.StartActivityForResult()
+    ) { result ->
+        if (result.resultCode == Activity.RESULT_OK) {
+            val task = GoogleSignIn.getSignedInAccountFromIntent(result.data)
+            try {
+                // Google Sign In was successful, authenticate with Firebase
+                val account = task.getResult(ApiException::class.java)!!
+                Log.d(TAG, "firebaseAuthWithGoogle:" + account.id)
+                firebaseAuthWithGoogle(account.idToken!!)
+            } catch (e: ApiException) {
+                // Google Sign In failed, update UI appropriately
+                Log.w(TAG, "Google sign in failed", e)
+            }
+        }
+    }
+
+    private fun firebaseAuthWithGoogle(idToken: String) {
+        val credential = GoogleAuthProvider.getCredential(idToken, null)
+        auth.signInWithCredential(credential)
+            .addOnCompleteListener(this) { task ->
+                if (task.isSuccessful) {
+                    // Sign in success, update UI with the signed-in user's information
+                    Log.d(TAG, "signInWithCredential:success")
+                    val user = auth.currentUser
+                    updateUI(user)
+                } else {
+                    // If sign in fails, display a message to the user.
+                    Log.w(TAG, "signInWithCredential:failure", task.exception)
+                    updateUI(null)
+                }
+            }
+    }
+
+    private fun updateUI(currentUser: FirebaseUser?) {
+        if (currentUser != null){
+            startActivity(Intent(this@LoginActivity, MainActivity::class.java))
+            finish()
+        }
+    }
+
+    override fun onStart() {
+        super.onStart()
+        // Check if user is signed in (non-null) and update UI accordingly.
+        val currentUser = auth.currentUser
+        updateUI(currentUser)
+    }
+
+    companion object {
+        private const val TAG = "LoginActivity"
+    }
+}