Implement native web auth

android/app/build.gradle

@@ -48,6 +48,10 @@ android {
             signingConfig signingConfigs.debug
         }
     }
+
+    dependencies {
+        implementation 'androidx.browser:browser:1.0.0'
+    }
 }
 
 flutter {

android/app/src/main/AndroidManifest.xml

@@ -45,8 +45,8 @@
             </intent-filter>
         </activity>
 
-        <activity android:name="com.linusu.flutter_web_auth.CallbackActivity" >
-            <intent-filter android:label="flutter_web_auth">
+        <activity android:name=".TbWebCallbackActivity" >
+            <intent-filter android:label="tb_web_auth">
                 <action android:name="android.intent.action.VIEW" />
                 <category android:name="android.intent.category.DEFAULT" />
                 <category android:name="android.intent.category.BROWSABLE" />

android/app/src/main/kotlin/org/thingsboard/app/KeepAliveService.kt

@@ -0,0 +1,16 @@
+package org.thingsboard.app
+
+import android.app.Service
+import android.content.Intent
+import android.os.Binder
+import android.os.IBinder
+
+class KeepAliveService: Service() {
+  companion object {
+    val binder = Binder()
+  }
+
+  override fun onBind(intent: Intent): IBinder {
+    return binder
+  }
+}

android/app/src/main/kotlin/org/thingsboard/app/MainActivity.kt

@@ -1,6 +1,20 @@
 package org.thingsboard.app
 
+import androidx.annotation.NonNull
 import io.flutter.embedding.android.FlutterActivity
+import io.flutter.embedding.engine.FlutterEngine
+import io.flutter.plugin.common.MethodChannel
 
 class MainActivity: FlutterActivity() {
+
+    override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) {
+        super.configureFlutterEngine(flutterEngine)
+        registerTbWebAuth(flutterEngine)
+    }
+
+    fun registerTbWebAuth(flutterEngine: FlutterEngine) {
+        val channel = MethodChannel(flutterEngine.dartExecutor, "tb_web_auth")
+        channel.setMethodCallHandler(TbWebAuthHandler(this))
+    }
+
 }

android/app/src/main/kotlin/org/thingsboard/app/TbWebAuthHandler.kt

@@ -0,0 +1,50 @@
+package org.thingsboard.app
+
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+
+import androidx.browser.customtabs.CustomTabsIntent
+
+import io.flutter.plugin.common.MethodCall
+import io.flutter.plugin.common.MethodChannel
+import io.flutter.plugin.common.MethodChannel.MethodCallHandler
+import io.flutter.plugin.common.MethodChannel.Result
+import io.flutter.plugin.common.PluginRegistry.Registrar
+
+class TbWebAuthHandler(private val context: Context): MethodCallHandler {
+    companion object {
+        val callbacks = mutableMapOf<String, Result>()
+    }
+
+    override fun onMethodCall(call: MethodCall, resultCallback: Result) {
+        when (call.method) {
+            "authenticate" -> {
+                val url = Uri.parse(call.argument("url"))
+                val callbackUrlScheme = call.argument<String>("callbackUrlScheme")!!
+                val saveHistory = call.argument<Boolean>("saveHistory")
+
+                callbacks[callbackUrlScheme] = resultCallback
+
+                val intent = CustomTabsIntent.Builder().build()
+                val keepAliveIntent = Intent(context, KeepAliveService::class.java)
+
+                intent.intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP or Intent.FLAG_ACTIVITY_NEW_TASK)
+                if (saveHistory != null && !saveHistory) {
+                    intent.intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY)
+                }
+                intent.intent.putExtra("android.support.customtabs.extra.KEEP_ALIVE", keepAliveIntent)
+
+                intent.launchUrl(context, url)
+            }
+            "cleanUpDanglingCalls" -> {
+                callbacks.forEach{ (_, danglingResultCallback) ->
+                    danglingResultCallback.error("CANCELED", "User canceled login", null)
+                }
+                callbacks.clear()
+                resultCallback.success(null)
+            }
+            else -> resultCallback.notImplemented()
+        }
+    }
+}

android/app/src/main/kotlin/org/thingsboard/app/TbWebCallbackActivity.kt

@@ -0,0 +1,20 @@
+package org.thingsboard.app
+
+import android.app.Activity
+import android.net.Uri
+import android.os.Bundle
+
+class TbWebCallbackActivity: Activity() {
+  override fun onCreate(savedInstanceState: Bundle?) {
+    super.onCreate(savedInstanceState)
+
+    val url = intent?.data
+    val scheme = url?.scheme
+
+    if (scheme != null) {
+        TbWebAuthHandler.callbacks.remove(scheme)?.success(url.toString())
+    }
+
+    finish()
+  }
+}