Merge pull request #1265 from vector-im/feature/deactivate

Deactivate account using password

CHANGES.md

@@ -7,6 +7,7 @@ Features ✨:
  - Cross-Signing | Verify new session from existing session (#1134)
  - Cross-Signing | Bootstraping cross signing with 4S from mobile (#985)
  - Save media files to Gallery (#973)
+ - Account deactivation (with password only) (#35)
 
 Improvements 🙌:
  - Verification DM / Handle concurrent .start after .ready (#794)

docs/notifications.md

@@ -38,10 +38,10 @@ When the client receives the new information, it immediately sends another reque
 This effectively emulates a server push feature.
 
 The HTTP long Polling can be fine tuned in the **SDK** using two parameters:
-* timout (Sync request timeout)
+* timeout (Sync request timeout)
 * delay (Delay between each sync)
 
-**timeout** is a server paramter, defined by:
+**timeout** is a server parameter, defined by:
 ```
 The maximum time to wait, in milliseconds, before returning this request.`
 If no events (or other data) become available before this time elapses, the server will return a response with empty fields.

docs/signin.md

@@ -57,7 +57,7 @@ We get credential (200)
 
 ```json
 {
-  "user_id": "@benoit0816:matrix.org",
+  "user_id": "@alice:matrix.org",
   "access_token": "MDAxOGxvY2F0aW9uIG1hdHREDACTEDb2l0MDgxNjptYXRyaXgub3JnCjAwMTZjaWQgdHlwZSA9IGFjY2VzcwowMDIxY2lkIG5vbmNlID0gfnYrSypfdTtkNXIuNWx1KgowMDJmc2lnbmF0dXJlIOsh1XqeAkXexh4qcofl_aR4kHJoSOWYGOhE7-ubX-DZCg",
   "home_server": "matrix.org",
   "device_id": "GTVREDALBF",
@@ -128,6 +128,8 @@ We get the credentials (200)
 }
 ```
 
+It's worth noting that the response from the homeserver contains the userId of Alice.
+
 ### Login with Msisdn
 
 Not supported yet in RiotX

matrix-sdk-android/src/androidTest/java/im/vector/matrix/android/account/ChangePasswordTest.kt

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.matrix.android.account
+
+import im.vector.matrix.android.InstrumentedTest
+import im.vector.matrix.android.api.failure.isInvalidPassword
+import im.vector.matrix.android.common.CommonTestHelper
+import im.vector.matrix.android.common.SessionTestParams
+import im.vector.matrix.android.common.TestConstants
+import org.amshove.kluent.shouldBeTrue
+import org.junit.FixMethodOrder
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.junit.runners.JUnit4
+import org.junit.runners.MethodSorters
+
+@RunWith(JUnit4::class)
+@FixMethodOrder(MethodSorters.JVM)
+class ChangePasswordTest : InstrumentedTest {
+
+    private val commonTestHelper = CommonTestHelper(context())
+
+    companion object {
+        private const val NEW_PASSWORD = "this is a new password"
+    }
+
+    @Test
+    fun changePasswordTest() {
+        val session = commonTestHelper.createAccount(TestConstants.USER_ALICE, SessionTestParams(withInitialSync = false))
+
+        // Change password
+        commonTestHelper.doSync<Unit> {
+            session.changePassword(TestConstants.PASSWORD, NEW_PASSWORD, it)
+        }
+
+        // Try to login with the previous password, it will fail
+        val throwable = commonTestHelper.logAccountWithError(session.myUserId, TestConstants.PASSWORD)
+        throwable.isInvalidPassword().shouldBeTrue()
+
+        // Try to login with the new password, should work
+        val session2 = commonTestHelper.logIntoAccount(session.myUserId, NEW_PASSWORD, SessionTestParams(withInitialSync = false))
+
+        commonTestHelper.signOutAndClose(session)
+        commonTestHelper.signOutAndClose(session2)
+    }
+}

matrix-sdk-android/src/androidTest/java/im/vector/matrix/android/account/DeactivateAccountTest.kt

@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.matrix.android.account
+
+import im.vector.matrix.android.InstrumentedTest
+import im.vector.matrix.android.api.auth.data.LoginFlowResult
+import im.vector.matrix.android.api.auth.registration.RegistrationResult
+import im.vector.matrix.android.api.failure.Failure
+import im.vector.matrix.android.api.failure.MatrixError
+import im.vector.matrix.android.common.CommonTestHelper
+import im.vector.matrix.android.common.SessionTestParams
+import im.vector.matrix.android.common.TestConstants
+import im.vector.matrix.android.common.TestMatrixCallback
+import org.junit.Assert.assertTrue
+import org.junit.FixMethodOrder
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.junit.runners.JUnit4
+import org.junit.runners.MethodSorters
+
+@RunWith(JUnit4::class)
+@FixMethodOrder(MethodSorters.JVM)
+class DeactivateAccountTest : InstrumentedTest {
+
+    private val commonTestHelper = CommonTestHelper(context())
+
+    @Test
+    fun deactivateAccountTest() {
+        val session = commonTestHelper.createAccount(TestConstants.USER_ALICE, SessionTestParams(withInitialSync = false))
+
+        // Deactivate the account
+        commonTestHelper.doSync<Unit> {
+            session.deactivateAccount(TestConstants.PASSWORD, false, it)
+        }
+
+        // Try to login on the previous account, it will fail (M_USER_DEACTIVATED)
+        val throwable = commonTestHelper.logAccountWithError(session.myUserId, TestConstants.PASSWORD)
+
+        // Test the error
+        assertTrue(throwable is Failure.ServerError
+                && throwable.error.code == MatrixError.M_USER_DEACTIVATED
+                && throwable.error.message == "This account has been deactivated")
+
+        // Try to create an account with the deactivate account user id, it will fail (M_USER_IN_USE)
+        val hs = commonTestHelper.createHomeServerConfig()
+
+        commonTestHelper.doSync<LoginFlowResult> {
+            commonTestHelper.matrix.authenticationService.getLoginFlow(hs, it)
+        }
+
+        var accountCreationError: Throwable? = null
+        commonTestHelper.waitWithLatch {
+            commonTestHelper.matrix.authenticationService
+                    .getRegistrationWizard()
+                    .createAccount(session.myUserId.substringAfter("@").substringBefore(":"),
+                            TestConstants.PASSWORD,
+                            null,
+                            object : TestMatrixCallback<RegistrationResult>(it, false) {
+                                override fun onFailure(failure: Throwable) {
+                                    accountCreationError = failure
+                                    super.onFailure(failure)
+                                }
+                            })
+        }
+
+        // Test the error
+        accountCreationError.let {
+            assertTrue(it is Failure.ServerError
+                    && it.error.code == MatrixError.M_USER_IN_USE)
+        }
+
+        // No need to close the session, it has been deactivated
+    }
+}

matrix-sdk-android/src/androidTest/java/im/vector/matrix/android/common/CommonTestHelper.kt

@@ -183,9 +183,9 @@ class CommonTestHelper(context: Context) {
      * @param testParams test params about the session
      * @return the session associated with the existing account
      */
-    private fun logIntoAccount(userId: String,
-                               password: String,
-                               testParams: SessionTestParams): Session {
+    fun logIntoAccount(userId: String,
+                       password: String,
+                       testParams: SessionTestParams): Session {
         val session = logAccountAndSync(userId, password, testParams)
         assertNotNull(session)
         return session
@@ -260,14 +260,45 @@ class CommonTestHelper(context: Context) {
         return session
     }
 
+    /**
+     * Log into the account and expect an error
+     *
+     * @param userName the account username
+     * @param password the password
+     */
+    fun logAccountWithError(userName: String,
+                            password: String): Throwable {
+        val hs = createHomeServerConfig()
+
+        doSync<LoginFlowResult> {
+            matrix.authenticationService
+                    .getLoginFlow(hs, it)
+        }
+
+        var requestFailure: Throwable? = null
+        waitWithLatch { latch ->
+            matrix.authenticationService
+                    .getLoginWizard()
+                    .login(userName, password, "myDevice", object : TestMatrixCallback<Session>(latch, onlySuccessful = false) {
+                        override fun onFailure(failure: Throwable) {
+                            requestFailure = failure
+                            super.onFailure(failure)
+                        }
+                    })
+        }
+
+        assertNotNull(requestFailure)
+        return requestFailure!!
+    }
+
     /**
      * Await for a latch and ensure the result is true
      *
      * @param latch
      * @throws InterruptedException
      */
-    fun await(latch: CountDownLatch, timout: Long? = TestConstants.timeOutMillis) {
-        assertTrue(latch.await(timout ?: TestConstants.timeOutMillis, TimeUnit.MILLISECONDS))
+    fun await(latch: CountDownLatch, timeout: Long? = TestConstants.timeOutMillis) {
+        assertTrue(latch.await(timeout ?: TestConstants.timeOutMillis, TimeUnit.MILLISECONDS))
     }
 
     fun retryPeriodicallyWithLatch(latch: CountDownLatch, condition: (() -> Boolean)) {
@@ -282,10 +313,10 @@ class CommonTestHelper(context: Context) {
         }
     }
 
-    fun waitWithLatch(timout: Long? = TestConstants.timeOutMillis, block: (CountDownLatch) -> Unit) {
+    fun waitWithLatch(timeout: Long? = TestConstants.timeOutMillis, block: (CountDownLatch) -> Unit) {
         val latch = CountDownLatch(1)
         block(latch)
-        await(latch, timout)
+        await(latch, timeout)
     }
 
     // Transform a method with a MatrixCallback to a synchronous method

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/account/AccountService.kt

@@ -23,11 +23,28 @@ import im.vector.matrix.android.api.util.Cancelable
  * This interface defines methods to manage the account. It's implemented at the session level.
  */
 interface AccountService {
-
     /**
      * Ask the homeserver to change the password.
      * @param password Current password.
      * @param newPassword New password
      */
     fun changePassword(password: String, newPassword: String, callback: MatrixCallback<Unit>): Cancelable
+
+    /**
+     * Deactivate the account.
+     *
+     * This will make your account permanently unusable. You will not be able to log in, and no one will be able to re-register
+     * the same user ID. This will cause your account to leave all rooms it is participating in, and it will remove your account
+     * details from your identity server. <b>This action is irreversible</b>.\n\nDeactivating your account <b>does not by default
+     * cause us to forget messages you have sent</b>. If you would like us to forget your messages, please tick the box below.
+     *
+     * Message visibility in Matrix is similar to email. Our forgetting your messages means that messages you have sent will not
+     * be shared with any new or unregistered users, but registered users who already have access to these messages will still
+     * have access to their copy.
+     *
+     * @param password the account password
+     * @param eraseAllData set to true to forget all messages that have been sent. Warning: this will cause future users to see
+     * an incomplete view of conversations
+     */
+    fun deactivateAccount(password: String, eraseAllData: Boolean, callback: MatrixCallback<Unit>): Cancelable
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/account/AccountAPI.kt

@@ -16,7 +16,6 @@
 
 package im.vector.matrix.android.internal.session.account
 
-import im.vector.matrix.android.api.session.account.model.ChangePasswordParams
 import im.vector.matrix.android.internal.network.NetworkConstants
 import retrofit2.Call
 import retrofit2.http.Body
@@ -30,4 +29,12 @@ internal interface AccountAPI {
      */
     @POST(NetworkConstants.URI_API_PREFIX_PATH_R0 + "account/password")
     fun changePassword(@Body params: ChangePasswordParams): Call<Unit>
+
+    /**
+     * Deactivate the user account
+     *
+     * @param params the deactivate account params
+     */
+    @POST(NetworkConstants.URI_API_PREFIX_PATH_R0 + "account/deactivate")
+    fun deactivate(@Body params: DeactivateAccountParams): Call<Unit>
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/account/AccountModule.kt

@@ -39,6 +39,9 @@ internal abstract class AccountModule {
     @Binds
     abstract fun bindChangePasswordTask(task: DefaultChangePasswordTask): ChangePasswordTask
 
+    @Binds
+    abstract fun bindDeactivateAccountTask(task: DefaultDeactivateAccountTask): DeactivateAccountTask
+
     @Binds
     abstract fun bindAccountService(service: DefaultAccountService): AccountService
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/account/ChangePasswordParams.kt

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package im.vector.matrix.android.api.session.account.model
+package im.vector.matrix.android.internal.session.account
 
 import com.squareup.moshi.Json
 import com.squareup.moshi.JsonClass

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/account/ChangePasswordTask.kt

@@ -17,7 +17,6 @@
 package im.vector.matrix.android.internal.session.account
 
 import im.vector.matrix.android.api.failure.Failure
-import im.vector.matrix.android.api.session.account.model.ChangePasswordParams
 import im.vector.matrix.android.internal.auth.registration.RegistrationFlowResponse
 import im.vector.matrix.android.internal.di.MoshiProvider
 import im.vector.matrix.android.internal.di.UserId

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/account/DeactivateAccountParams.kt

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.matrix.android.internal.session.account
+
+import com.squareup.moshi.Json
+import com.squareup.moshi.JsonClass
+import im.vector.matrix.android.internal.crypto.model.rest.UserPasswordAuth
+
+@JsonClass(generateAdapter = true)
+internal data class DeactivateAccountParams(
+        @Json(name = "auth")
+        val auth: UserPasswordAuth? = null,
+
+        // Set to true to erase all data of the account
+        @Json(name = "erase")
+        val erase: Boolean
+) {
+    companion object {
+        fun create(userId: String, password: String, erase: Boolean): DeactivateAccountParams {
+            return DeactivateAccountParams(
+                    auth = UserPasswordAuth(user = userId, password = password),
+                    erase = erase
+            )
+        }
+    }
+}

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/account/DeactivateAccountTask.kt

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.matrix.android.internal.session.account
+
+import im.vector.matrix.android.internal.di.UserId
+import im.vector.matrix.android.internal.network.executeRequest
+import im.vector.matrix.android.internal.session.cleanup.CleanupSession
+import im.vector.matrix.android.internal.task.Task
+import org.greenrobot.eventbus.EventBus
+import javax.inject.Inject
+
+internal interface DeactivateAccountTask : Task<DeactivateAccountTask.Params, Unit> {
+    data class Params(
+            val password: String,
+            val eraseAllData: Boolean
+    )
+}
+
+internal class DefaultDeactivateAccountTask @Inject constructor(
+        private val accountAPI: AccountAPI,
+        private val eventBus: EventBus,
+        @UserId private val userId: String,
+        private val cleanupSession: CleanupSession
+) : DeactivateAccountTask {
+
+    override suspend fun execute(params: DeactivateAccountTask.Params) {
+        val deactivateAccountParams = DeactivateAccountParams.create(userId, params.password, params.eraseAllData)
+
+        executeRequest<Unit>(eventBus) {
+            apiCall = accountAPI.deactivate(deactivateAccountParams)
+        }
+
+        cleanupSession.handle()
+    }
+}

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/account/DefaultAccountService.kt

@@ -24,6 +24,7 @@ import im.vector.matrix.android.internal.task.configureWith
 import javax.inject.Inject
 
 internal class DefaultAccountService @Inject constructor(private val changePasswordTask: ChangePasswordTask,
+                                                         private val deactivateAccountTask: DeactivateAccountTask,
                                                          private val taskExecutor: TaskExecutor) : AccountService {
 
     override fun changePassword(password: String, newPassword: String, callback: MatrixCallback<Unit>): Cancelable {
@@ -33,4 +34,12 @@ internal class DefaultAccountService @Inject constructor(private val changePassw
                 }
                 .executeBy(taskExecutor)
     }
+
+    override fun deactivateAccount(password: String, eraseAllData: Boolean, callback: MatrixCallback<Unit>): Cancelable {
+        return deactivateAccountTask
+                .configureWith(DeactivateAccountTask.Params(password, eraseAllData)) {
+                    this.callback = callback
+                }
+                .executeBy(taskExecutor)
+    }
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/cleanup/CleanupSession.kt

@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.matrix.android.internal.session.cleanup
+
+import im.vector.matrix.android.BuildConfig
+import im.vector.matrix.android.internal.SessionManager
+import im.vector.matrix.android.internal.auth.SessionParamsStore
+import im.vector.matrix.android.internal.crypto.CryptoModule
+import im.vector.matrix.android.internal.database.RealmKeysUtils
+import im.vector.matrix.android.internal.di.CryptoDatabase
+import im.vector.matrix.android.internal.di.SessionCacheDirectory
+import im.vector.matrix.android.internal.di.SessionDatabase
+import im.vector.matrix.android.internal.di.SessionFilesDirectory
+import im.vector.matrix.android.internal.di.SessionId
+import im.vector.matrix.android.internal.di.UserMd5
+import im.vector.matrix.android.internal.di.WorkManagerProvider
+import im.vector.matrix.android.internal.session.SessionModule
+import im.vector.matrix.android.internal.session.cache.ClearCacheTask
+import io.realm.Realm
+import io.realm.RealmConfiguration
+import timber.log.Timber
+import java.io.File
+import javax.inject.Inject
+
+internal class CleanupSession @Inject constructor(
+        private val workManagerProvider: WorkManagerProvider,
+        @SessionId private val sessionId: String,
+        private val sessionManager: SessionManager,
+        private val sessionParamsStore: SessionParamsStore,
+        @SessionDatabase private val clearSessionDataTask: ClearCacheTask,
+        @CryptoDatabase private val clearCryptoDataTask: ClearCacheTask,
+        @SessionFilesDirectory private val sessionFiles: File,
+        @SessionCacheDirectory private val sessionCache: File,
+        private val realmKeysUtils: RealmKeysUtils,
+        @SessionDatabase private val realmSessionConfiguration: RealmConfiguration,
+        @CryptoDatabase private val realmCryptoConfiguration: RealmConfiguration,
+        @UserMd5 private val userMd5: String
+) {
+    suspend fun handle() {
+        Timber.d("Cleanup: release session...")
+        sessionManager.releaseSession(sessionId)
+
+        Timber.d("Cleanup: cancel pending works...")
+        workManagerProvider.cancelAllWorks()
+
+        Timber.d("Cleanup: delete session params...")
+        sessionParamsStore.delete(sessionId)
+
+        Timber.d("Cleanup: clear session data...")
+        clearSessionDataTask.execute(Unit)
+
+        Timber.d("Cleanup: clear crypto data...")
+        clearCryptoDataTask.execute(Unit)
+
+        Timber.d("Cleanup: clear file system")
+        sessionFiles.deleteRecursively()
+        sessionCache.deleteRecursively()
+
+        Timber.d("Cleanup: clear the database keys")
+        realmKeysUtils.clear(SessionModule.getKeyAlias(userMd5))
+        realmKeysUtils.clear(CryptoModule.getKeyAlias(userMd5))
+
+        // Sanity check
+        if (BuildConfig.DEBUG) {
+            Realm.getGlobalInstanceCount(realmSessionConfiguration)
+                    .takeIf { it > 0 }
+                    ?.let { Timber.e("All realm instance for session has not been closed ($it)") }
+            Realm.getGlobalInstanceCount(realmCryptoConfiguration)
+                    .takeIf { it > 0 }
+                    ?.let { Timber.e("All realm instance for crypto has not been closed ($it)") }
+        }
+    }
+}

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/signout/SignOutTask.kt

@@ -16,58 +16,31 @@
 
 package im.vector.matrix.android.internal.session.signout
 
-import im.vector.matrix.android.BuildConfig
 import im.vector.matrix.android.api.failure.Failure
 import im.vector.matrix.android.api.failure.MatrixError
-import im.vector.matrix.android.internal.SessionManager
-import im.vector.matrix.android.internal.auth.SessionParamsStore
-import im.vector.matrix.android.internal.crypto.CryptoModule
-import im.vector.matrix.android.internal.database.RealmKeysUtils
-import im.vector.matrix.android.internal.di.CryptoDatabase
-import im.vector.matrix.android.internal.di.SessionCacheDirectory
-import im.vector.matrix.android.internal.di.SessionDatabase
-import im.vector.matrix.android.internal.di.SessionFilesDirectory
-import im.vector.matrix.android.internal.di.SessionId
-import im.vector.matrix.android.internal.di.UserMd5
-import im.vector.matrix.android.internal.di.WorkManagerProvider
 import im.vector.matrix.android.internal.network.executeRequest
-import im.vector.matrix.android.internal.session.SessionModule
-import im.vector.matrix.android.internal.session.cache.ClearCacheTask
+import im.vector.matrix.android.internal.session.cleanup.CleanupSession
 import im.vector.matrix.android.internal.task.Task
-import io.realm.Realm
-import io.realm.RealmConfiguration
 import org.greenrobot.eventbus.EventBus
 import timber.log.Timber
-import java.io.File
 import java.net.HttpURLConnection
 import javax.inject.Inject
 
 internal interface SignOutTask : Task<SignOutTask.Params, Unit> {
     data class Params(
-            val sigOutFromHomeserver: Boolean
+            val signOutFromHomeserver: Boolean
     )
 }
 
 internal class DefaultSignOutTask @Inject constructor(
-        private val workManagerProvider: WorkManagerProvider,
-        @SessionId private val sessionId: String,
         private val signOutAPI: SignOutAPI,
-        private val sessionManager: SessionManager,
-        private val sessionParamsStore: SessionParamsStore,
-        @SessionDatabase private val clearSessionDataTask: ClearCacheTask,
-        @CryptoDatabase private val clearCryptoDataTask: ClearCacheTask,
-        @SessionFilesDirectory private val sessionFiles: File,
-        @SessionCacheDirectory private val sessionCache: File,
-        private val realmKeysUtils: RealmKeysUtils,
-        @SessionDatabase private val realmSessionConfiguration: RealmConfiguration,
-        @CryptoDatabase private val realmCryptoConfiguration: RealmConfiguration,
-        @UserMd5 private val userMd5: String,
-        private val eventBus: EventBus
+        private val eventBus: EventBus,
+        private val cleanupSession: CleanupSession
 ) : SignOutTask {
 
     override suspend fun execute(params: SignOutTask.Params) {
         // It should be done even after a soft logout, to be sure the deviceId is deleted on the
-        if (params.sigOutFromHomeserver) {
+        if (params.signOutFromHomeserver) {
             Timber.d("SignOut: send request...")
             try {
                 executeRequest<Unit>(eventBus) {
@@ -87,37 +60,7 @@ internal class DefaultSignOutTask @Inject constructor(
             }
         }
 
-        Timber.d("SignOut: release session...")
-        sessionManager.releaseSession(sessionId)
-
-        Timber.d("SignOut: cancel pending works...")
-        workManagerProvider.cancelAllWorks()
-
-        Timber.d("SignOut: delete session params...")
-        sessionParamsStore.delete(sessionId)
-
-        Timber.d("SignOut: clear session data...")
-        clearSessionDataTask.execute(Unit)
-
-        Timber.d("SignOut: clear crypto data...")
-        clearCryptoDataTask.execute(Unit)
-
-        Timber.d("SignOut: clear file system")
-        sessionFiles.deleteRecursively()
-        sessionCache.deleteRecursively()
-
-        Timber.d("SignOut: clear the database keys")
-        realmKeysUtils.clear(SessionModule.getKeyAlias(userMd5))
-        realmKeysUtils.clear(CryptoModule.getKeyAlias(userMd5))
-
-        // Sanity check
-        if (BuildConfig.DEBUG) {
-            Realm.getGlobalInstanceCount(realmSessionConfiguration)
-                    .takeIf { it > 0 }
-                    ?.let { Timber.e("All realm instance for session has not been closed ($it)") }
-            Realm.getGlobalInstanceCount(realmCryptoConfiguration)
-                    .takeIf { it > 0 }
-                    ?.let { Timber.e("All realm instance for crypto has not been closed ($it)") }
-        }
+        Timber.d("SignOut: cleanup session...")
+        cleanupSession.handle()
     }
 }

vector/src/main/java/im/vector/riotx/core/di/FragmentModule.kt

@@ -81,6 +81,7 @@ import im.vector.riotx.features.settings.VectorSettingsNotificationPreferenceFra
 import im.vector.riotx.features.settings.VectorSettingsNotificationsTroubleshootFragment
 import im.vector.riotx.features.settings.VectorSettingsPreferencesFragment
 import im.vector.riotx.features.settings.VectorSettingsSecurityPrivacyFragment
+import im.vector.riotx.features.settings.account.deactivation.DeactivateAccountFragment
 import im.vector.riotx.features.settings.crosssigning.CrossSigningSettingsFragment
 import im.vector.riotx.features.settings.devices.VectorSettingsDevicesFragment
 import im.vector.riotx.features.settings.devtools.AccountDataFragment
@@ -445,8 +446,14 @@ interface FragmentModule {
     @IntoMap
     @FragmentKey(BootstrapAccountPasswordFragment::class)
     fun bindBootstrapAccountPasswordFragment(fragment: BootstrapAccountPasswordFragment): Fragment
+
     @Binds
     @IntoMap
     @FragmentKey(BootstrapMigrateBackupFragment::class)
     fun bindBootstrapMigrateBackupFragment(fragment: BootstrapMigrateBackupFragment): Fragment
+
+    @Binds
+    @IntoMap
+    @FragmentKey(DeactivateAccountFragment::class)
+    fun bindDeactivateAccountFragment(fragment: DeactivateAccountFragment): Fragment
 }

vector/src/main/java/im/vector/riotx/features/MainActivity.kt

@@ -49,6 +49,7 @@ data class MainActivityArgs(
         val clearCache: Boolean = false,
         val clearCredentials: Boolean = false,
         val isUserLoggedOut: Boolean = false,
+        val isAccountDeactivated: Boolean = false,
         val isSoftLogout: Boolean = false
 ) : Parcelable
 
@@ -110,6 +111,7 @@ class MainActivity : VectorBaseActivity() {
                 clearCache = argsFromIntent?.clearCache ?: false,
                 clearCredentials = argsFromIntent?.clearCredentials ?: false,
                 isUserLoggedOut = argsFromIntent?.isUserLoggedOut ?: false,
+                isAccountDeactivated = argsFromIntent?.isAccountDeactivated ?: false,
                 isSoftLogout = argsFromIntent?.isSoftLogout ?: false
         )
     }
@@ -121,7 +123,14 @@ class MainActivity : VectorBaseActivity() {
             return
         }
         when {
-            args.clearCredentials -> session.signOut(
+            args.isAccountDeactivated -> {
+                // Just do the local cleanup
+                Timber.w("Account deactivated, start app")
+                sessionHolder.clearActiveSession()
+                doLocalCleanup()
+                startNextActivityAndFinish()
+            }
+            args.clearCredentials     -> session.signOut(
                     !args.isUserLoggedOut,
                     object : MatrixCallback<Unit> {
                         override fun onSuccess(data: Unit) {
@@ -135,7 +144,7 @@ class MainActivity : VectorBaseActivity() {
                             displayError(failure)
                         }
                     })
-            args.clearCache       -> session.clearCache(
+            args.clearCache           -> session.clearCache(
                     object : MatrixCallback<Unit> {
                         override fun onSuccess(data: Unit) {
                             doLocalCleanup()
@@ -182,16 +191,16 @@ class MainActivity : VectorBaseActivity() {
     private fun startNextActivityAndFinish() {
         val intent = when {
             args.clearCredentials
-                    && !args.isUserLoggedOut ->
-                // User has explicitly asked to log out
+                    && (!args.isUserLoggedOut || args.isAccountDeactivated) ->
+                // User has explicitly asked to log out or deactivated his account
                 LoginActivity.newIntent(this, null)
-            args.isSoftLogout                ->
+            args.isSoftLogout                                               ->
                 // The homeserver has invalidated the token, with a soft logout
                 SoftLogoutActivity.newIntent(this)
-            args.isUserLoggedOut             ->
+            args.isUserLoggedOut                                            ->
                 // the homeserver has invalidated the token (password changed, device deleted, other security reasons)
                 SignedOutActivity.newIntent(this)
-            sessionHolder.hasActiveSession() ->
+            sessionHolder.hasActiveSession()                                ->
                 // We have a session.
                 // Check it can be opened
                 if (sessionHolder.getActiveSession().isOpenable) {
@@ -200,7 +209,7 @@ class MainActivity : VectorBaseActivity() {
                     // The token is still invalid
                     SoftLogoutActivity.newIntent(this)
                 }
-            else                             ->
+            else                                                            ->
                 // First start, or no active session
                 LoginActivity.newIntent(this, null)
         }

vector/src/main/java/im/vector/riotx/features/home/HomeActivity.kt

@@ -35,6 +35,7 @@ import im.vector.matrix.android.internal.crypto.model.MXUsersDevicesMap
 import im.vector.riotx.R
 import im.vector.riotx.core.di.ActiveSessionHolder
 import im.vector.riotx.core.di.ScreenComponent
+import im.vector.riotx.core.extensions.exhaustive
 import im.vector.riotx.core.extensions.hideKeyboard
 import im.vector.riotx.core.extensions.replaceFragment
 import im.vector.riotx.core.platform.ToolbarConfigurable
@@ -92,6 +93,7 @@ class HomeActivity : VectorBaseActivity(), ToolbarConfigurable {
                 .subscribe { sharedAction ->
                     when (sharedAction) {
                         is HomeActivitySharedAction.OpenDrawer                 -> drawerLayout.openDrawer(GravityCompat.START)
+                        is HomeActivitySharedAction.CloseDrawer                -> drawerLayout.closeDrawer(GravityCompat.START)
                         is HomeActivitySharedAction.OpenGroup                  -> {
                             drawerLayout.closeDrawer(GravityCompat.START)
                             replaceFragment(R.id.homeDetailFragmentContainer, HomeDetailFragment::class.java)
@@ -99,7 +101,7 @@ class HomeActivity : VectorBaseActivity(), ToolbarConfigurable {
                         is HomeActivitySharedAction.PromptForSecurityBootstrap -> {
                             BootstrapBottomSheet.show(supportFragmentManager, true)
                         }
-                    }
+                    }.exhaustive
                 }
                 .disposeOnDestroy()
 

vector/src/main/java/im/vector/riotx/features/home/HomeActivitySharedAction.kt

@@ -23,6 +23,7 @@ import im.vector.riotx.core.platform.VectorSharedAction
  */
 sealed class HomeActivitySharedAction : VectorSharedAction {
     object OpenDrawer : HomeActivitySharedAction()
+    object CloseDrawer : HomeActivitySharedAction()
     object OpenGroup : HomeActivitySharedAction()
     object PromptForSecurityBootstrap : HomeActivitySharedAction()
 }

vector/src/main/java/im/vector/riotx/features/home/HomeDrawerFragment.kt

@@ -33,10 +33,15 @@ class HomeDrawerFragment @Inject constructor(
         private val avatarRenderer: AvatarRenderer
 ) : VectorBaseFragment() {
 
+    private lateinit var sharedActionViewModel: HomeSharedActionViewModel
+
     override fun getLayoutResId() = R.layout.fragment_home_drawer
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
+
+        sharedActionViewModel = activityViewModelProvider.get(HomeSharedActionViewModel::class.java)
+
         if (savedInstanceState == null) {
             replaceChildFragment(R.id.homeDrawerGroupListContainer, GroupListFragment::class.java)
         }
@@ -49,11 +54,13 @@ class HomeDrawerFragment @Inject constructor(
             }
         }
         homeDrawerHeaderSettingsView.setOnClickListener {
+            sharedActionViewModel.post(HomeActivitySharedAction.CloseDrawer)
             navigator.openSettings(requireActivity())
         }
 
         // Debug menu
         homeDrawerHeaderDebugView.setOnClickListener {
+            sharedActionViewModel.post(HomeActivitySharedAction.CloseDrawer)
             navigator.openDebug(requireActivity())
         }
     }

vector/src/main/java/im/vector/riotx/features/login/LoginFragment.kt

@@ -19,6 +19,7 @@ package im.vector.riotx.features.login
 import android.os.Build
 import android.os.Bundle
 import android.view.View
+import android.view.inputmethod.EditorInfo
 import androidx.autofill.HintConstants
 import androidx.core.view.isVisible
 import butterknife.OnClick
@@ -40,7 +41,8 @@ import kotlinx.android.synthetic.main.fragment_login.*
 import javax.inject.Inject
 
 /**
- * In this screen, in signin mode:
+ * In this screen:
+ * In signin mode:
  * - the user is asked for login (or email) and password to sign in to a homeserver.
  * - He also can reset his password
  * In signup mode:
@@ -49,6 +51,7 @@ import javax.inject.Inject
 class LoginFragment @Inject constructor() : AbstractLoginFragment() {
 
     private var passwordShown = false
+    private var isSignupMode = false
 
     override fun getLayoutResId() = R.layout.fragment_login
 
@@ -57,6 +60,14 @@ class LoginFragment @Inject constructor() : AbstractLoginFragment() {
 
         setupSubmitButton()
         setupPasswordReveal()
+
+        passwordField.setOnEditorActionListener { _, actionId, _ ->
+            if (actionId == EditorInfo.IME_ACTION_DONE) {
+                submit()
+                return@setOnEditorActionListener true
+            }
+            return@setOnEditorActionListener false
+        }
     }
 
     private fun setupAutoFill(state: LoginViewState) {
@@ -82,7 +93,20 @@ class LoginFragment @Inject constructor() : AbstractLoginFragment() {
         val login = loginField.text.toString()
         val password = passwordField.text.toString()
 
-        loginViewModel.handle(LoginAction.LoginOrRegister(login, password, getString(R.string.login_mobile_device_riotx)))
+        // This can be called by the IME action, so deal with empty cases
+        var error = 0
+        if (login.isEmpty()) {
+            loginFieldTil.error = getString(if (isSignupMode) R.string.error_empty_field_choose_user_name else R.string.error_empty_field_enter_user_name)
+            error++
+        }
+        if (password.isEmpty()) {
+            passwordFieldTil.error = getString(if (isSignupMode) R.string.error_empty_field_choose_password else R.string.error_empty_field_your_password)
+            error++
+        }
+
+        if (error == 0) {
+            loginViewModel.handle(LoginAction.LoginOrRegister(login, password, getString(R.string.login_mobile_device_riotx)))
+        }
     }
 
     private fun cleanupUi() {
@@ -190,6 +214,8 @@ class LoginFragment @Inject constructor() : AbstractLoginFragment() {
     }
 
     override fun updateWithState(state: LoginViewState) {
+        isSignupMode = state.signMode == SignMode.SignUp
+
         setupUi(state)
         setupAutoFill(state)
         setupButtons(state)

vector/src/main/java/im/vector/riotx/features/notifications/NotificationDrawerManager.kt

@@ -191,7 +191,12 @@ class NotificationDrawerManager @Inject constructor(private val context: Context
         backgroundHandler.removeCallbacksAndMessages(null)
         backgroundHandler.postDelayed(
                 {
-                    refreshNotificationDrawerBg()
+                    try {
+                        refreshNotificationDrawerBg()
+                    } catch (throwable: Throwable) {
+                        // It can happen if for instance session has been destroyed. It's a bit ugly to try catch like this, but it's safer
+                        Timber.w(throwable, "refreshNotificationDrawerBg failure")
+                    }
                 }, 200)
     }
 

vector/src/main/java/im/vector/riotx/features/settings/VectorPreferences.kt

@@ -159,7 +159,6 @@ class VectorPreferences @Inject constructor(private val context: Context) {
         private const val DID_ASK_TO_IGNORE_BATTERY_OPTIMIZATIONS_KEY = "DID_ASK_TO_IGNORE_BATTERY_OPTIMIZATIONS_KEY"
         private const val DID_MIGRATE_TO_NOTIFICATION_REWORK = "DID_MIGRATE_TO_NOTIFICATION_REWORK"
         private const val DID_ASK_TO_USE_ANALYTICS_TRACKING_KEY = "DID_ASK_TO_USE_ANALYTICS_TRACKING_KEY"
-        const val SETTINGS_DEACTIVATE_ACCOUNT_KEY = "SETTINGS_DEACTIVATE_ACCOUNT_KEY"
         private const val SETTINGS_DISPLAY_ALL_EVENTS_KEY = "SETTINGS_DISPLAY_ALL_EVENTS_KEY"
 
         private const val MEDIA_SAVING_3_DAYS = 0

vector/src/main/java/im/vector/riotx/features/settings/VectorSettingsActivity.kt

@@ -20,6 +20,7 @@ import android.content.Intent
 import androidx.fragment.app.FragmentManager
 import androidx.preference.Preference
 import androidx.preference.PreferenceFragmentCompat
+import im.vector.matrix.android.api.failure.GlobalError
 import im.vector.matrix.android.api.session.Session
 import im.vector.riotx.R
 import im.vector.riotx.core.di.ScreenComponent
@@ -43,6 +44,8 @@ class VectorSettingsActivity : VectorBaseActivity(),
 
     private var keyToHighlight: String? = null
 
+    var ignoreInvalidTokenError = false
+
     @Inject lateinit var session: Session
 
     override fun injectWith(injector: ScreenComponent) {
@@ -57,7 +60,7 @@ class VectorSettingsActivity : VectorBaseActivity(),
             when (intent.getIntExtra(EXTRA_DIRECT_ACCESS, EXTRA_DIRECT_ACCESS_ROOT)) {
                 EXTRA_DIRECT_ACCESS_ADVANCED_SETTINGS ->
                     replaceFragment(R.id.vector_settings_page, VectorSettingsAdvancedSettingsFragment::class.java, null, FRAGMENT_TAG)
-                EXTRA_DIRECT_ACCESS_SECURITY_PRIVACY ->
+                EXTRA_DIRECT_ACCESS_SECURITY_PRIVACY  ->
                     replaceFragment(R.id.vector_settings_page, VectorSettingsSecurityPrivacyFragment::class.java, null, FRAGMENT_TAG)
                 else                                  ->
                     replaceFragment(R.id.vector_settings_page, VectorSettingsRootFragment::class.java, null, FRAGMENT_TAG)
@@ -110,6 +113,14 @@ class VectorSettingsActivity : VectorBaseActivity(),
         return keyToHighlight
     }
 
+    override fun handleInvalidToken(globalError: GlobalError.InvalidToken) {
+        if (ignoreInvalidTokenError) {
+            Timber.w("Ignoring invalid token global error")
+        } else {
+            super.handleInvalidToken(globalError)
+        }
+    }
+
     companion object {
         fun getIntent(context: Context, directAccess: Int) = Intent(context, VectorSettingsActivity::class.java)
                 .apply { putExtra(EXTRA_DIRECT_ACCESS, directAccess) }

vector/src/main/java/im/vector/riotx/features/settings/VectorSettingsGeneralFragment.kt

@@ -234,19 +234,6 @@ class VectorSettingsGeneralFragment : VectorSettingsBaseFragment() {
 
             false
         }
-
-        // Deactivate account section
-
-        // deactivate account
-        findPreference<VectorPreference>(VectorPreferences.SETTINGS_DEACTIVATE_ACCOUNT_KEY)!!
-                .onPreferenceClickListener = Preference.OnPreferenceClickListener {
-            activity?.let {
-                notImplemented()
-                // TODO startActivity(DeactivateAccountActivity.getIntent(it))
-            }
-
-            false
-        }
     }
 
     override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {

vector/src/main/java/im/vector/riotx/features/settings/account/deactivation/DeactivateAccountFragment.kt

@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.features.settings.account.deactivation
+
+import android.content.Context
+import android.os.Bundle
+import android.view.View
+import com.airbnb.mvrx.fragmentViewModel
+import com.airbnb.mvrx.withState
+import com.jakewharton.rxbinding3.widget.textChanges
+import im.vector.riotx.R
+import im.vector.riotx.core.extensions.exhaustive
+import im.vector.riotx.core.extensions.showPassword
+import im.vector.riotx.core.platform.VectorBaseActivity
+import im.vector.riotx.core.platform.VectorBaseFragment
+import im.vector.riotx.features.MainActivity
+import im.vector.riotx.features.MainActivityArgs
+import im.vector.riotx.features.settings.VectorSettingsActivity
+import kotlinx.android.synthetic.main.fragment_deactivate_account.*
+import javax.inject.Inject
+
+class DeactivateAccountFragment @Inject constructor(
+        val viewModelFactory: DeactivateAccountViewModel.Factory
+) : VectorBaseFragment() {
+
+    private val viewModel: DeactivateAccountViewModel by fragmentViewModel()
+
+    override fun getLayoutResId() = R.layout.fragment_deactivate_account
+
+    override fun onResume() {
+        super.onResume()
+        (activity as? VectorBaseActivity)?.supportActionBar?.setTitle(R.string.deactivate_account_title)
+    }
+
+    private var settingsActivity: VectorSettingsActivity? = null
+
+    override fun onAttach(context: Context) {
+        super.onAttach(context)
+        settingsActivity = context as? VectorSettingsActivity
+    }
+
+    override fun onDetach() {
+        super.onDetach()
+        settingsActivity = null
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        setupUi()
+        setupViewListeners()
+        observeViewEvents()
+    }
+
+    private fun setupUi() {
+        deactivateAccountPassword.textChanges()
+                .subscribe {
+                    deactivateAccountPasswordTil.error = null
+                    deactivateAccountSubmit.isEnabled = it.isNotEmpty()
+                }
+                .disposeOnDestroyView()
+    }
+
+    private fun setupViewListeners() {
+        deactivateAccountPasswordReveal.setOnClickListener {
+            viewModel.handle(DeactivateAccountAction.TogglePassword)
+        }
+
+        deactivateAccountSubmit.setOnClickListener {
+            viewModel.handle(DeactivateAccountAction.DeactivateAccount(
+                    deactivateAccountPassword.text.toString(),
+                    deactivateAccountEraseCheckbox.isChecked))
+        }
+    }
+
+    private fun observeViewEvents() {
+        viewModel.observeViewEvents {
+            when (it) {
+                is DeactivateAccountViewEvents.Loading      -> {
+                    settingsActivity?.ignoreInvalidTokenError = true
+                    showLoadingDialog(it.message)
+                }
+                DeactivateAccountViewEvents.EmptyPassword   -> {
+                    settingsActivity?.ignoreInvalidTokenError = false
+                    deactivateAccountPasswordTil.error = getString(R.string.error_empty_field_your_password)
+                }
+                DeactivateAccountViewEvents.InvalidPassword -> {
+                    settingsActivity?.ignoreInvalidTokenError = false
+                    deactivateAccountPasswordTil.error = getString(R.string.settings_fail_to_update_password_invalid_current_password)
+                }
+                is DeactivateAccountViewEvents.OtherFailure -> {
+                    settingsActivity?.ignoreInvalidTokenError = false
+                    displayErrorDialog(it.throwable)
+                }
+                DeactivateAccountViewEvents.Done            ->
+                    MainActivity.restartApp(activity!!, MainActivityArgs(clearCredentials = true, isAccountDeactivated = true))
+            }.exhaustive
+        }
+    }
+
+    override fun invalidate() = withState(viewModel) { state ->
+        deactivateAccountPassword.showPassword(state.passwordShown)
+        deactivateAccountPasswordReveal.setImageResource(if (state.passwordShown) R.drawable.ic_eye_closed_black else R.drawable.ic_eye_black)
+    }
+}

vector/src/main/java/im/vector/riotx/features/settings/account/deactivation/DeactivateAccountViewEvents.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.features.settings.account.deactivation
+
+import im.vector.riotx.core.platform.VectorViewEvents
+
+/**
+ * Transient events for deactivate account settings screen
+ */
+sealed class DeactivateAccountViewEvents : VectorViewEvents {
+    data class Loading(val message: CharSequence? = null) : DeactivateAccountViewEvents()
+    object EmptyPassword : DeactivateAccountViewEvents()
+    object InvalidPassword : DeactivateAccountViewEvents()
+    data class OtherFailure(val throwable: Throwable) : DeactivateAccountViewEvents()
+    object Done : DeactivateAccountViewEvents()
+}

vector/src/main/java/im/vector/riotx/features/settings/account/deactivation/DeactivateAccountViewModel.kt

@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package im.vector.riotx.features.settings.account.deactivation
+
+import com.airbnb.mvrx.FragmentViewModelContext
+import com.airbnb.mvrx.MvRxState
+import com.airbnb.mvrx.MvRxViewModelFactory
+import com.airbnb.mvrx.ViewModelContext
+import com.squareup.inject.assisted.Assisted
+import com.squareup.inject.assisted.AssistedInject
+import im.vector.matrix.android.api.MatrixCallback
+import im.vector.matrix.android.api.failure.isInvalidPassword
+import im.vector.matrix.android.api.session.Session
+import im.vector.riotx.core.extensions.exhaustive
+import im.vector.riotx.core.platform.VectorViewModel
+import im.vector.riotx.core.platform.VectorViewModelAction
+
+data class DeactivateAccountViewState(
+        val passwordShown: Boolean = false
+) : MvRxState
+
+sealed class DeactivateAccountAction : VectorViewModelAction {
+    object TogglePassword : DeactivateAccountAction()
+    data class DeactivateAccount(val password: String, val eraseAllData: Boolean) : DeactivateAccountAction()
+}
+
+class DeactivateAccountViewModel @AssistedInject constructor(@Assisted private val initialState: DeactivateAccountViewState,
+                                                             private val session: Session)
+    : VectorViewModel<DeactivateAccountViewState, DeactivateAccountAction, DeactivateAccountViewEvents>(initialState) {
+
+    @AssistedInject.Factory
+    interface Factory {
+        fun create(initialState: DeactivateAccountViewState): DeactivateAccountViewModel
+    }
+
+    override fun handle(action: DeactivateAccountAction) {
+        when (action) {
+            DeactivateAccountAction.TogglePassword       -> handleTogglePassword()
+            is DeactivateAccountAction.DeactivateAccount -> handleDeactivateAccount(action)
+        }.exhaustive
+    }
+
+    private fun handleTogglePassword() = withState {
+        setState {
+            copy(passwordShown = !passwordShown)
+        }
+    }
+
+    private fun handleDeactivateAccount(action: DeactivateAccountAction.DeactivateAccount) {
+        if (action.password.isEmpty()) {
+            _viewEvents.post(DeactivateAccountViewEvents.EmptyPassword)
+            return
+        }
+
+        _viewEvents.post(DeactivateAccountViewEvents.Loading())
+
+        session.deactivateAccount(action.password, action.eraseAllData, object : MatrixCallback<Unit> {
+            override fun onSuccess(data: Unit) {
+                _viewEvents.post(DeactivateAccountViewEvents.Done)
+            }
+
+            override fun onFailure(failure: Throwable) {
+                if (failure.isInvalidPassword()) {
+                    _viewEvents.post(DeactivateAccountViewEvents.InvalidPassword)
+                } else {
+                    _viewEvents.post(DeactivateAccountViewEvents.OtherFailure(failure))
+                }
+            }
+        })
+    }
+
+    companion object : MvRxViewModelFactory<DeactivateAccountViewModel, DeactivateAccountViewState> {
+
+        @JvmStatic
+        override fun create(viewModelContext: ViewModelContext, state: DeactivateAccountViewState): DeactivateAccountViewModel? {
+            val fragment: DeactivateAccountFragment = (viewModelContext as FragmentViewModelContext).fragment()
+            return fragment.viewModelFactory.create(state)
+        }
+    }
+}

vector/src/main/res/layout/fragment_deactivate_account.xml

@@ -0,0 +1,106 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.core.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="16dp">
+
+        <TextView
+            android:id="@+id/deactivateAccountContent"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:text="@string/deactivate_account_content"
+            android:textColor="?riotx_text_primary"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/deactivateAccountEraseCheckbox"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            android:text="@string/deactivate_account_delete_checkbox"
+            android:textColor="?riotx_text_primary"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/deactivateAccountContent" />
+
+        <TextView
+            android:id="@+id/deactivateAccountPromptPassword"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            android:text="@string/deactivate_account_prompt_password"
+            android:textColor="?riotx_text_primary"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/deactivateAccountEraseCheckbox" />
+
+        <FrameLayout
+            android:id="@+id/deactivateAccountPasswordContainer"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:hint="@string/auth_password_placeholder"
+            android:inputType="textPassword"
+            android:maxLines="1"
+            android:nextFocusDown="@+id/login_password"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/deactivateAccountPromptPassword">
+
+
+            <com.google.android.material.textfield.TextInputLayout
+                android:id="@+id/deactivateAccountPasswordTil"
+                style="@style/VectorTextInputLayout"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:hint="@string/login_signup_password_hint"
+                app:errorEnabled="true"
+                app:errorIconDrawable="@null">
+
+                <com.google.android.material.textfield.TextInputEditText
+                    android:id="@+id/deactivateAccountPassword"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:ems="10"
+                    android:inputType="textPassword"
+                    android:maxLines="1"
+                    android:paddingEnd="48dp"
+                    android:paddingRight="48dp"
+                    tools:ignore="RtlSymmetry" />
+
+            </com.google.android.material.textfield.TextInputLayout>
+
+            <ImageView
+                android:id="@+id/deactivateAccountPasswordReveal"
+                android:layout_width="@dimen/layout_touch_size"
+                android:layout_height="@dimen/layout_touch_size"
+                android:layout_gravity="end"
+                android:layout_marginTop="8dp"
+                android:background="?attr/selectableItemBackground"
+                android:scaleType="center"
+                android:src="@drawable/ic_eye_black"
+                android:tint="?attr/colorAccent"
+                tools:contentDescription="@string/a11y_show_password" />
+
+        </FrameLayout>
+
+        <Button
+            android:id="@+id/deactivateAccountSubmit"
+            style="@style/VectorButtonStyleDestructive"
+            android:layout_marginTop="16dp"
+            android:layout_marginBottom="16dp"
+            android:text="@string/deactivate_account_submit"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/deactivateAccountPasswordContainer" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+</androidx.core.widget.NestedScrollView>

vector/src/main/res/layout/fragment_login.xml

@@ -82,6 +82,7 @@
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content"
                         android:ems="10"
+                        android:imeOptions="actionDone"
                         android:inputType="textPassword"
                         android:maxLines="1"
                         android:paddingEnd="48dp"
@@ -104,19 +105,18 @@
 
             </FrameLayout>
 
-            <RelativeLayout
+            <androidx.constraintlayout.widget.ConstraintLayout
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:layout_marginTop="22dp"
-                android:orientation="horizontal">
+                android:layout_marginTop="22dp">
 
                 <com.google.android.material.button.MaterialButton
                     android:id="@+id/forgetPasswordButton"
                     style="@style/Style.Vector.Login.Button.Text"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
-                    android:layout_gravity="start"
-                    android:text="@string/auth_forgot_password" />
+                    android:text="@string/auth_forgot_password"
+                    app:layout_constraintStart_toStartOf="parent" />
 
                 <com.google.android.material.button.MaterialButton
                     android:id="@+id/loginSubmit"
@@ -124,12 +124,12 @@
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:layout_alignParentEnd="true"
-                    android:layout_gravity="end"
                     android:text="@string/auth_login"
+                    app:layout_constraintEnd_toEndOf="parent"
                     tools:enabled="false"
                     tools:ignore="RelativeOverlap" />
 
-            </RelativeLayout>
+            </androidx.constraintlayout.widget.ConstraintLayout>
 
         </LinearLayout>
 

vector/src/main/res/values/strings_riotX.xml

@@ -11,7 +11,8 @@
 
 
     <!-- BEGIN Strings added by Benoit -->
-
+    <string name="error_empty_field_choose_user_name">Please choose a username.</string>
+    <string name="error_empty_field_choose_password">Please choose a password.</string>
     <!-- END Strings added by Benoit -->
 
 

vector/src/main/res/xml/vector_settings_general.xml

@@ -97,14 +97,13 @@
 
     </im.vector.riotx.core.preference.VectorPreferenceCategory>
 
-    <im.vector.riotx.core.preference.VectorPreferenceCategory
-        android:key="SETTINGS_DEACTIVATE_ACCOUNT_CATEGORY_KEY"
-        android:title="@string/settings_deactivate_account_section"
-        app:isPreferenceVisible="@bool/false_not_implemented">
+    <im.vector.riotx.core.preference.VectorPreferenceCategory android:title="@string/settings_deactivate_account_section">
 
         <im.vector.riotx.core.preference.VectorPreference
             android:key="SETTINGS_DEACTIVATE_ACCOUNT_KEY"
-            android:title="@string/settings_deactivate_my_account" />
+            android:persistent="false"
+            android:title="@string/settings_deactivate_my_account"
+            app:fragment="im.vector.riotx.features.settings.account.deactivation.DeactivateAccountFragment" />
 
     </im.vector.riotx.core.preference.VectorPreferenceCategory>