feat: Implement remember me option in login screen

app/build.gradle

@@ -153,5 +153,7 @@ dependencies {
     //Shimmer
     implementation 'com.facebook.shimmer:shimmer:0.4.0'
 
+    //Smart LOck authentication
+    implementation "com.google.android.gms:play-services-auth:${rootConfiguration.playServiceAuthVersion}"
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:${rootConfiguration.kotlinVersion}"
 }

app/config.gradle

@@ -23,4 +23,5 @@ ext {
     customTabsVersion = '28.0.0'
     jUnitVersion = '4.12'
     mockitoCoreVersion = '1.10.19'
+    playServiceAuthVersion='16.0.1'
 }

app/src/main/java/org/fossasia/susi/ai/helper/Constant.kt

@@ -29,6 +29,8 @@ object Constant {
     const val SAVED_EMAIL = "saved_email"
     const val SAVE_EMAIL = "save_email"
 
+    const val SUSI_ACCOUNT = "susi_account"
+
     const val SAVE_DIALOG_STATE = "save_state"
     const val SUSI_SERVER = "is_susi_server_selected"
     const val CUSTOM_SERVER = "custom_server"

app/src/main/java/org/fossasia/susi/ai/login/LoginActivity.kt

@@ -11,6 +11,7 @@ import android.view.View
 import android.view.inputmethod.EditorInfo
 import android.widget.ArrayAdapter
 import android.widget.Toast
+import com.google.android.gms.auth.api.credentials.Credential
 import kotlinx.android.synthetic.main.activity_login.*
 import org.fossasia.susi.ai.R
 import org.fossasia.susi.ai.chat.ChatActivity
@@ -72,11 +73,26 @@ class LoginActivity : AppCompatActivity(), ILoginView {
         val string = bundle?.getString("email")
         if (string != null)
             email.editText?.setText(string)
+
+        loginPresenter.clientRequest(this)
+    }
+
+    override fun onCredentialRetrieved(credential: Credential?) {
+
+        var accountName = credential?.name
+        if (accountName == Constant.SUSI_ACCOUNT) {
+            email.editText?.setText(credential?.id.toString())
+            password.editText?.setText(credential?.password.toString())
+        }
     }
 
     override fun onLoginSuccess(message: String?) {
         hideSoftKeyboard(this, window.decorView)
         Toast.makeText(this@LoginActivity, message, Toast.LENGTH_SHORT).show()
+        if (rememberCredential.isChecked) {
+            loginPresenter.saveCredential(email.editText?.text.toString(), password.editText?.text.toString())
+        }
+
         val intent = Intent(this@LoginActivity, ChatActivity::class.java)
         intent.flags = Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_ACTIVITY_NEW_TASK
         intent.putExtra(Constant.FIRST_TIME, true)

app/src/main/java/org/fossasia/susi/ai/login/LoginPresenter.kt

@@ -1,6 +1,13 @@
 package org.fossasia.susi.ai.login
 
+import android.content.Context
 import android.graphics.Color
+import com.google.android.gms.auth.api.credentials.Credentials
+import com.google.android.gms.auth.api.credentials.CredentialRequest
+import com.google.android.gms.auth.api.credentials.CredentialsClient
+import com.google.android.gms.auth.api.credentials.Credential
+import com.google.android.gms.auth.api.credentials.CredentialRequestResponse
+import com.google.android.gms.tasks.OnCompleteListener
 import org.fossasia.susi.ai.R
 import org.fossasia.susi.ai.data.ForgotPasswordModel
 import org.fossasia.susi.ai.data.contract.ILoginModel
@@ -29,9 +36,9 @@ import java.net.UnknownHostException
  * Created by chiragw15 on 4/7/17.
  */
 class LoginPresenter(loginActivity: LoginActivity) :
-    ILoginPresenter,
-    ILoginModel.OnLoginFinishedListener,
-    IForgotPasswordModel.OnFinishListener {
+        ILoginPresenter,
+        ILoginModel.OnLoginFinishedListener,
+        IForgotPasswordModel.OnFinishListener {
 
     private var loginModel: LoginModel = LoginModel()
     private var utilModel: UtilModel = UtilModel(loginActivity)
@@ -40,6 +47,9 @@ class LoginPresenter(loginActivity: LoginActivity) :
     var forgotPasswordModel: ForgotPasswordModel = ForgotPasswordModel()
     lateinit var email: String
     lateinit var message: String
+    private lateinit var credential: Credential
+    private lateinit var credentialsClient: CredentialsClient
+    private lateinit var credentialRequest: CredentialRequest
 
     override fun onAttach(loginView: ILoginView) {
         this.loginView = loginView
@@ -240,4 +250,31 @@ class LoginPresenter(loginActivity: LoginActivity) :
     override fun cancelSignup() {
         forgotPasswordModel.cancelSignup()
     }
+
+    override fun clientRequest(context: Context) {
+        credentialsClient = Credentials.getClient(context)
+        credentialRequest = CredentialRequest.Builder()
+                .setPasswordLoginSupported(true)
+                .build()
+
+        credentialsClient.request(credentialRequest).addOnCompleteListener(
+                OnCompleteListener<CredentialRequestResponse> { task ->
+                    if (task.isSuccessful) {
+                        loginView?.onCredentialRetrieved(task.result?.credential)
+                        return@OnCompleteListener
+                    }
+                })
+    }
+
+    override fun saveCredential(email: String, password: String) {
+        credential = Credential.Builder(email)
+                .setPassword(password)
+                .setName(Constant.SUSI_ACCOUNT)
+                .build()
+        credentialsClient.save(credential).addOnCompleteListener({
+            if (it.isComplete) {
+                Timber.d("Saved Credentials")
+            }
+        })
+    }
 }

app/src/main/java/org/fossasia/susi/ai/login/contract/ILoginPresenter.kt

@@ -1,5 +1,7 @@
 package org.fossasia.susi.ai.login.contract
 
+import android.content.Context
+
 /**
  * The interface for Login Presenter
  *
@@ -20,4 +22,8 @@ interface ILoginPresenter {
     fun requestPassword(email: String, url: String, isPersonalServerChecked: Boolean)
 
     fun cancelSignup()
+
+    fun saveCredential(email: String, password: String)
+
+    fun clientRequest(context: Context)
 }

app/src/main/java/org/fossasia/susi/ai/login/contract/ILoginView.kt

@@ -1,5 +1,7 @@
 package org.fossasia.susi.ai.login.contract
 
+import com.google.android.gms.auth.api.credentials.Credential
+
 /**
  * The interface for Login view
  *
@@ -24,4 +26,6 @@ interface ILoginView {
     fun resetPasswordSuccess()
 
     fun resetPasswordFailure(title: String?, message: String?, button: String?, color: Int)
+
+    fun onCredentialRetrieved(credential: Credential?)
 }

app/src/main/res/layout-land/activity_login.xml

@@ -72,6 +72,13 @@
                 android:layout_marginBottom="5dp"
                 android:text="@string/custom_server" />
 
+            <android.support.v7.widget.AppCompatCheckBox
+                android:id="@+id/rememberCredential"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginBottom="@dimen/margin_bottom"
+                android:text="@string/remember_me" />
+
             <android.support.design.widget.TextInputLayout
                 android:id="@+id/inputUrl"
                 android:layout_width="match_parent"

app/src/main/res/layout/activity_login.xml

@@ -63,6 +63,13 @@
             android:layout_marginBottom="@dimen/margin_bottom"
             android:text="@string/custom_server" />
 
+        <android.support.v7.widget.AppCompatCheckBox
+            android:id="@+id/rememberCredential"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="@dimen/margin_bottom"
+            android:text="@string/remember_me" />
+
         <android.support.design.widget.TextInputLayout
             android:id="@+id/inputUrl"
             android:layout_width="match_parent"

app/src/main/res/values/strings.xml

@@ -328,6 +328,7 @@
     <string name="content_type_static">Content Type: Static</string>
 
     <string name="custom_server">Custom Server</string>
+    <string name="remember_me">Remember Me</string>
 
     <string name="description">Description</string>
     <string name="description_long">Description long</string>