Migrate the entire codebase to Flutter 3.x.x

android/app/build.gradle

@@ -1,46 +1,26 @@
-def localProperties = new Properties()
-def localPropertiesFile = rootProject.file('local.properties')
-if (localPropertiesFile.exists()) {
-    localPropertiesFile.withReader('UTF-8') { reader ->
-        localProperties.load(reader)
-    }
-}
-
-def flutterRoot = localProperties.getProperty('flutter.sdk')
-if (flutterRoot == null) {
-    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
-}
-
-def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
-if (flutterVersionCode == null) {
-    flutterVersionCode = '1'
+plugins {
+    id "com.android.application"
+    id "kotlin-android"
+    id "dev.flutter.flutter-gradle-plugin"
 }
 
-def flutterVersionName = localProperties.getProperty('flutter.versionName')
-if (flutterVersionName == null) {
-    flutterVersionName = '1.0'
-}
-
-apply plugin: 'com.android.application'
-apply plugin: 'kotlin-android'
-apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
-
 def keystoreProperties = new Properties()
-   def keystorePropertiesFile = rootProject.file('key.properties')
-   if (keystorePropertiesFile.exists()) {
-       keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
-   }
+def keystorePropertiesFile = rootProject.file('key.properties')
+if (keystorePropertiesFile.exists()) {
+    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
+}
 
 android {
-    compileSdkVersion 33
+    namespace "com.channeli.img.placementonline"
+    compileSdk flutter.compileSdkVersion
 
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_8
-        targetCompatibility JavaVersion.VERSION_1_8
+        sourceCompatibility JavaVersion.VERSION_11
+        targetCompatibility JavaVersion.VERSION_11
     }
 
     kotlinOptions {
-        jvmTarget = '1.8'
+        jvmTarget = JavaVersion.VERSION_11.toString()
     }
 
     sourceSets {
@@ -52,13 +32,12 @@ android {
     }
 
     defaultConfig {
-        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "com.channeli.img.placementonline"
-        minSdkVersion 16
-        targetSdkVersion 31
-        versionCode flutterVersionCode.toInteger()
-        versionName flutterVersionName
-        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        minSdkVersion flutter.minSdkVersion
+        targetSdkVersion flutter.targetSdkVersion
+        versionCode flutter.versionCode
+        versionName flutter.versionName
+        // testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
 
     signingConfigs {
@@ -83,8 +62,8 @@ flutter {
 }
 
 dependencies {
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'androidx.test:runner:1.1.1'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
+    // implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    // testImplementation 'junit:junit:4.12'
+    // androidTestImplementation 'androidx.test:runner:1.1.1'
+    // androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
 }

android/app/src/debug/AndroidManifest.xml

@@ -1,5 +1,4 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.example.placement">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
     <!-- Flutter needs it to communicate with the running application
          to allow setting breakpoints, to provide hot reload, etc.
     -->

android/app/src/main/AndroidManifest.xml

@@ -1,5 +1,4 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.example.placement">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
     <!-- io.flutter.app.FlutterApplication is an android.app.Application that
          calls FlutterMain.startInitialization(this); in its onCreate method.
          In most cases you can leave this as-is, but you if you want to provide
@@ -31,4 +30,19 @@
             android:name="flutterEmbedding"
             android:value="2" />
     </application>
+    <queries>
+    <!-- Required to query activities that can process text, see:
+         https://developer.android.com/training/package-visibility and
+         https://developer.android.com/reference/android/content/Intent#ACTION_PROCESS_TEXT.
+
+         In particular, this is used by the Flutter engine in io.flutter.plugin.text.ProcessTextPlugin. -->
+        <intent>
+            <action android:name="android.intent.action.PROCESS_TEXT"/>
+            <data android:mimeType="text/plain"/>
+        </intent>
+        <intent>
+            <action android:name="android.intent.action.VIEW"/>
+            <data android:scheme="https"/>
+        </intent>
+    </queries>
 </manifest>

android/app/src/main/kotlin/com/example/placement/MainActivity.kt

@@ -1,12 +1,5 @@
-package com.example.placement
+package com.channeli.img.placementonline
 
-import androidx.annotation.NonNull;
 import io.flutter.embedding.android.FlutterActivity
-import io.flutter.embedding.engine.FlutterEngine
-import io.flutter.plugins.GeneratedPluginRegistrant
 
-class MainActivity: FlutterActivity() {
-    override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) {
-        GeneratedPluginRegistrant.registerWith(flutterEngine);
-    }
-}
+class MainActivity: FlutterActivity()

android/build.gradle

@@ -1,20 +1,7 @@
-buildscript {
-    ext.kotlin_version = '1.6.10'
-    repositories {
-        google()
-        jcenter()
-    }
-
-    dependencies {
-        classpath 'com.android.tools.build:gradle:7.1.2'
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-    }
-}
-
 allprojects {
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 }
 
@@ -26,6 +13,6 @@ subprojects {
     project.evaluationDependsOn(':app')
 }
 
-task clean(type: Delete) {
-    delete rootProject.buildDir
-}
+tasks.register("clean", Delete) {
+    delete rootProject.layout.buildDirectory
+}

android/gradle.properties

@@ -1,4 +1,3 @@
-org.gradle.jvmargs=-Xmx1536M
-android.enableR8=true
+org.gradle.jvmargs=-Xmx8G -XX:MaxMetaspaceSize=4G -XX:ReservedCodeCacheSize=512m -XX:+HeapDumpOnOutOfMemoryError
 android.useAndroidX=true
 android.enableJetifier=true

android/gradle/wrapper/gradle-wrapper.properties

@@ -2,4 +2,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.12-all.zip

android/settings.gradle

@@ -1,15 +1,25 @@
-include ':app'
+pluginManagement {
+    def flutterSdkPath = {
+        def properties = new Properties()
+        file("local.properties").withInputStream { properties.load(it) }
+        def flutterSdkPath = properties.getProperty("flutter.sdk")
+        assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
+        return flutterSdkPath
+    }()
 
-def flutterProjectRoot = rootProject.projectDir.parentFile.toPath()
+    includeBuild("$flutterSdkPath/packages/flutter_tools/gradle")
 
-def plugins = new Properties()
-def pluginsFile = new File(flutterProjectRoot.toFile(), '.flutter-plugins')
-if (pluginsFile.exists()) {
-    pluginsFile.withReader('UTF-8') { reader -> plugins.load(reader) }
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
 }
 
-plugins.each { name, path ->
-    def pluginDirectory = flutterProjectRoot.resolve(path).resolve('android').toFile()
-    include ":$name"
-    project(":$name").projectDir = pluginDirectory
+plugins {
+    id "dev.flutter.flutter-plugin-loader" version "1.0.0"
+    id "com.android.application" version "8.9.1" apply false
+    id "org.jetbrains.kotlin.android" version "2.1.0" apply false
 }
+
+include ":app"

ios/Flutter/ephemeral/flutter_lldb_helper.py

@@ -0,0 +1,32 @@
+#
+# Generated file, do not edit.
+#
+
+import lldb
+
+def handle_new_rx_page(frame: lldb.SBFrame, bp_loc, extra_args, intern_dict):
+    """Intercept NOTIFY_DEBUGGER_ABOUT_RX_PAGES and touch the pages."""
+    base = frame.register["x0"].GetValueAsAddress()
+    page_len = frame.register["x1"].GetValueAsUnsigned()
+
+    # Note: NOTIFY_DEBUGGER_ABOUT_RX_PAGES will check contents of the
+    # first page to see if handled it correctly. This makes diagnosing
+    # misconfiguration (e.g. missing breakpoint) easier.
+    data = bytearray(page_len)
+    data[0:8] = b'IHELPED!'
+
+    error = lldb.SBError()
+    frame.GetThread().GetProcess().WriteMemory(base, data, error)
+    if not error.Success():
+        print(f'Failed to write into {base}[+{page_len}]', error)
+        return
+
+def __lldb_init_module(debugger: lldb.SBDebugger, _):
+    target = debugger.GetDummyTarget()
+    # Caveat: must use BreakpointCreateByRegEx here and not
+    # BreakpointCreateByName. For some reasons callback function does not
+    # get carried over from dummy target for the later.
+    bp = target.BreakpointCreateByRegex("^NOTIFY_DEBUGGER_ABOUT_RX_PAGES$")
+    bp.SetScriptCallbackFunction('{}.handle_new_rx_page'.format(__name__))
+    bp.SetAutoContinue(True)
+    print("-- LLDB integration loaded --")

ios/Flutter/ephemeral/flutter_lldbinit

@@ -0,0 +1,5 @@
+#
+# Generated file, do not edit.
+#
+
+command script import --relative-to-command-file flutter_lldb_helper.py

lib/main.dart

@@ -1,22 +1,41 @@
 import 'package:flutter/material.dart';
-import 'package:placement/locator.dart';
-import 'package:placement/resources/R.dart';
-import 'package:placement/services/routing/placement_routes.dart';
 
-void main() {
+import 'locator.dart';
+import 'resources/R.dart';
+import 'services/routing/placement_routes.dart';
+import 'services/auth/auth_service.dart';
+
+void main() async {
+  // TODO: Look for more consistent method that prevent race condition when phone is sleeping
+  await AuthService().initState();
   setupLocator();
   runApp(MyApp());
 }
 
 class MyApp extends StatelessWidget {
-  const MyApp({Key key}) : super(key: key);
+  const MyApp({super.key});
 
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
       theme: Theme.of(context).copyWith(
         primaryColor: R.primaryCol,
-        appBarTheme: AppBarTheme(backgroundColor: R.primaryCol),
+        appBarTheme: AppBarTheme(
+          backgroundColor: R.primaryCol, 
+          foregroundColor: Colors.white,
+        ),
+        floatingActionButtonTheme: FloatingActionButtonThemeData(
+          backgroundColor: R.primaryCol,
+          foregroundColor: Colors.white,
+        ),
+        radioTheme: RadioThemeData(
+          fillColor: WidgetStateColor.resolveWith((states) => R.textColSecondary),
+        ),
+        textButtonTheme: TextButtonThemeData(
+          style: TextButton.styleFrom(
+            foregroundColor: R.textColSecondary
+          )
+        )
       ),
       title: 'Placement',
       initialRoute: '/',

lib/models/BranchRequirementModel.dart

@@ -3,11 +3,11 @@ import 'package:placement/models/DepartmentModel.dart';
 
 class BranchRequirementModel {
 
-  int id;
-  String code,
+  int? id;
+  String? code,
     name;
-  DegreeModel degree;
-  DepartmentModel department;
+  DegreeModel? degree;
+  DepartmentModel? department;
 
   BranchRequirementModel({
     this.code,

lib/models/CompanyDetailModel.dart

@@ -1,6 +1,6 @@
 class CompanyDetailModel {
-  int id;
-  String sector,
+  int? id;
+  String? sector,
     name,
     email,
     website,

lib/models/DegreeModel.dart

@@ -1,6 +1,6 @@
 class DegreeModel {
-  int id;
-  String code,
+  int? id;
+  String? code,
     name,
     graduation;
 

lib/models/DepartmentModel.dart

@@ -1,6 +1,6 @@
 class DepartmentModel {
-  int id;
-  String code,
+  int? id;
+  String? code,
     name;
 
   DepartmentModel({