Completed basic UI, added OAuth

.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 'com.google.gms.google-services'
+}
+
+android {
+    compileSdk 32
+
+    defaultConfig {
+        applicationId "com.example.cmsclonelite"
+        minSdk 21
+        targetSdk 32
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        vectorDrawables {
+            useSupportLibrary true
+        }
+    }
+
+    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 {
+        compose true
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion compose_version
+    }
+    packagingOptions {
+        resources {
+            excludes += '/META-INF/{AL2.0,LGPL2.1}'
+        }
+    }
+}
+
+dependencies {
+    implementation 'com.google.firebase:firebase-auth-ktx:21.0.8'
+    def nav_version = "2.5.2"
+
+    implementation 'com.google.firebase:firebase-auth:19.2.0'
+    implementation 'com.google.android.gms:play-services-auth:20.3.0'
+    implementation 'androidx.core:core-ktx:1.7.0'
+    implementation "androidx.compose.ui:ui:$compose_version"
+    implementation "androidx.compose.material:material:$compose_version"
+    implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"
+    androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version"
+    debugImplementation "androidx.compose.ui:ui-tooling:$compose_version"
+    implementation "androidx.compose.material:material-icons-extended:$compose_version"
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.1'
+    implementation 'androidx.activity:activity-compose:1.3.1'
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-play-services:1.3.9"
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+    implementation "androidx.navigation:navigation-compose:$nav_version"
+}

app/google-services.json

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+{
+  "project_info": {
+    "project_number": "557828460372",
+    "project_id": "cmsclonelite",
+    "storage_bucket": "cmsclonelite.appspot.com"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:557828460372:android:1ea29c7eaad14e919702c1",
+        "android_client_info": {
+          "package_name": "com.example.cmsclonelite"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "557828460372-82dcvmvi874781kbbs5ugsff8k5pglg0.apps.googleusercontent.com",
+          "client_type": 1,
+          "android_info": {
+            "package_name": "com.example.cmsclonelite",
+            "certificate_hash": "e7f0bc0ee733e96030facac386a8273cfb25e726"
+          }
+        },
+        {
+          "client_id": "557828460372-0184fqcfulugr78smv592m76u2rsqppm.apps.googleusercontent.com",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": "AIzaSyCXHWRM-3TkQB3VXUSALP01x8tJvHBVXtU"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": [
+            {
+              "client_id": "557828460372-0184fqcfulugr78smv592m76u2rsqppm.apps.googleusercontent.com",
+              "client_type": 3
+            }
+          ]
+        }
+      }
+    }
+  ],
+  "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/example/cmsclonelite/ExampleInstrumentedTest.kt

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+package com.example.cmsclonelite
+
+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.cmsclonelite", 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"
+    package="com.example.cmsclonelite" >
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.CMSCloneLite" >
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:label="@string/app_name"
+            android:theme="@style/Theme.CMSCloneLite" >
+            <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/example/cmsclonelite/BottomBarScreen.kt

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+package com.example.cmsclonelite
+
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.List
+import androidx.compose.material.icons.filled.ListAlt
+import androidx.compose.material.icons.filled.Settings
+import androidx.compose.ui.graphics.vector.ImageVector
+
+sealed class BottomBarScreen(
+    val route: String,
+    val title: String,
+    val icon: ImageVector
+) {
+    object MyCourses : BottomBarScreen(
+        route = "myCourses",
+        title = "My Courses",
+        icon = Icons.Default.List
+    )
+
+    object AllCourses : BottomBarScreen(
+        route = "allCourses",
+        title = "All Courses",
+        icon = Icons.Default.ListAlt
+    )
+
+    object Settings : BottomBarScreen(
+        route = "settings",
+        title = "Settings",
+        icon = Icons.Default.Settings
+    )
+}

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

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+package com.example.cmsclonelite
+
+import android.content.ContentValues.TAG
+import android.content.Intent
+import android.content.pm.ActivityInfo
+import android.os.Bundle
+import android.util.Log
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.navigation.NavHostController
+import androidx.navigation.compose.rememberNavController
+import com.example.cmsclonelite.graphs.SetupNavGraph
+import com.example.cmsclonelite.ui.theme.CMSCloneLiteTheme
+import com.google.android.gms.auth.api.identity.Identity
+import com.google.android.gms.auth.api.identity.SignInClient
+import com.google.android.gms.common.api.ApiException
+import com.google.android.gms.common.api.CommonStatusCodes
+import com.google.firebase.auth.FirebaseAuth
+import com.google.firebase.auth.GoogleAuthProvider
+
+class MainActivity : ComponentActivity() {
+    private lateinit var navController: NavHostController
+    private lateinit var mAuth: FirebaseAuth
+    private lateinit var oneTapClient: SignInClient
+    private val REQ_ONE_TAP = 2
+    private var showOneTapUI = true
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        mAuth = FirebaseAuth.getInstance()
+        val user = mAuth.currentUser
+        setContent {
+            CMSCloneLiteTheme {
+                this.requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
+                navController = rememberNavController()
+                SetupNavGraph(navController = navController)
+                if(user == null) {
+                    navController.navigate(route = Screen.Login.route) {
+                        popUpTo(Screen.MainScreen.route) {
+                            inclusive = true
+                        }
+                    }
+                }
+            }
+        }
+    }
+    @Deprecated("Deprecated in Java")
+    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+        super.onActivityResult(requestCode, resultCode, data)
+
+        when (requestCode) {
+            REQ_ONE_TAP -> {
+                try {
+                    oneTapClient = Identity.getSignInClient(this)
+                    val credential = oneTapClient.getSignInCredentialFromIntent(data)
+                    val idToken = credential.googleIdToken
+                    when {
+                        idToken != null -> {
+                            firebaseAuthWithGoogle(idToken)
+                            Log.d(TAG, "Got ID token.")
+                        }
+                        else -> {
+                            Log.d(TAG, "No ID token!")
+                        }
+                    }
+                } catch (e: ApiException) {when (e.statusCode) {
+                    CommonStatusCodes.CANCELED -> {
+                        Log.d(TAG, "One-tap dialog was closed.")
+                        showOneTapUI = false
+                    }
+                    CommonStatusCodes.NETWORK_ERROR -> {
+                        Log.d(TAG, "One-tap encountered a network error.")
+                    }
+                    else -> {
+                        Log.d(TAG, "Couldn't get credential from result." +
+                                " (${e.localizedMessage})")
+                    }
+                }
+                }
+            }
+        }
+    }
+    private fun firebaseAuthWithGoogle(idToken: String) {
+        val credential = GoogleAuthProvider.getCredential(idToken, null)
+        mAuth.signInWithCredential(credential)
+            .addOnCompleteListener(this) { task ->
+                if(task.isSuccessful) {
+                    Log.d(TAG, "Signed In with Credential")
+                    navController.navigate(route = Screen.MainScreen.route) {
+                        popUpTo(Screen.Login.route) {
+                            inclusive = true
+                        }
+                    }
+                }
+                else {
+                    Log.w(TAG, "Failed to Sign In")
+                }
+            }
+    }
+}