113 lines
4.8 KiB
Kotlin
113 lines
4.8 KiB
Kotlin
/*
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* Copyright (c) 2023 New Vector Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package io.element.android.features.verifysession.impl
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import androidx.compose.runtime.Composable
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import androidx.compose.runtime.LaunchedEffect
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import androidx.compose.runtime.collectAsState
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import androidx.compose.runtime.derivedStateOf
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import androidx.compose.runtime.getValue
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import androidx.compose.runtime.remember
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import androidx.compose.runtime.rememberCoroutineScope
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import io.element.android.libraries.architecture.Async
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import io.element.android.libraries.architecture.Presenter
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import io.element.android.libraries.matrix.api.verification.SessionVerificationService
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import javax.inject.Inject
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import io.element.android.features.verifysession.impl.VerifySelfSessionStateMachine.Event as StateMachineEvent
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import io.element.android.features.verifysession.impl.VerifySelfSessionStateMachine.State as StateMachineState
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class VerifySelfSessionPresenter @Inject constructor(
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private val sessionVerificationService: SessionVerificationService,
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) : Presenter<VerifySelfSessionState> {
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@Composable
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override fun present(): VerifySelfSessionState {
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LaunchedEffect(Unit) {
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// Force reset, just in case the service was left in a broken state
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sessionVerificationService.reset()
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}
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val coroutineScope = rememberCoroutineScope()
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val stateMachine = remember { VerifySelfSessionStateMachine(coroutineScope, sessionVerificationService) }
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// Create the new view state from the StateMachine state
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val stateMachineCurrentState by stateMachine.state.collectAsState()
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val verificationFlowState by remember {
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derivedStateOf { stateMachineStateToViewState(stateMachineCurrentState) }
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}
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fun handleEvents(event: VerifySelfSessionViewEvents) {
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when (event) {
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VerifySelfSessionViewEvents.RequestVerification -> stateMachine.process(StateMachineEvent.RequestVerification)
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VerifySelfSessionViewEvents.StartSasVerification -> stateMachine.process(StateMachineEvent.StartSasVerification)
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VerifySelfSessionViewEvents.Restart -> stateMachine.process(StateMachineEvent.Restart)
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VerifySelfSessionViewEvents.ConfirmVerification -> stateMachine.process(StateMachineEvent.AcceptChallenge)
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VerifySelfSessionViewEvents.DeclineVerification -> stateMachine.process(StateMachineEvent.DeclineChallenge)
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VerifySelfSessionViewEvents.CancelAndClose -> {
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if (stateMachineCurrentState !in sequenceOf(
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StateMachineState.Initial,
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StateMachineState.Completed,
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StateMachineState.Canceled
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)
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) {
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stateMachine.process(StateMachineEvent.Cancel)
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}
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}
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}
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}
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return VerifySelfSessionState(
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verificationFlowStep = verificationFlowState,
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eventSink = ::handleEvents,
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)
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}
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private fun stateMachineStateToViewState(state: StateMachineState): VerifySelfSessionState.VerificationStep =
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when (state) {
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StateMachineState.Initial -> {
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VerifySelfSessionState.VerificationStep.Initial
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}
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StateMachineState.RequestingVerification,
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StateMachineState.StartingSasVerification,
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StateMachineState.SasVerificationStarted,
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StateMachineState.Canceling -> {
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VerifySelfSessionState.VerificationStep.AwaitingOtherDeviceResponse
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}
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StateMachineState.VerificationRequestAccepted -> {
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VerifySelfSessionState.VerificationStep.Ready
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}
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StateMachineState.Canceled -> {
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VerifySelfSessionState.VerificationStep.Canceled
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}
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is StateMachineState.Verifying -> {
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val async = when (state) {
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is StateMachineState.Verifying.Replying -> Async.Loading()
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else -> Async.Uninitialized
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}
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VerifySelfSessionState.VerificationStep.Verifying(state.emojis, async)
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}
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StateMachineState.Completed -> {
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VerifySelfSessionState.VerificationStep.Completed
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}
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}
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}
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