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/*
* This file is part of GNU Taler
* (C) 2023 Taler Systems S.A.
*
* GNU Taler is free software; you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation; either version 3, or (at your option) any later version.
*
* GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
package net.taler.anastasis.ui.screens.recovery
import android.util.Log
import android.widget.Toast
import androidx.activity.compose.rememberLauncherForActivityResult
import androidx.activity.result.contract.ActivityResultContracts
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.aspectRatio
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.material.Icon
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.CloudDone
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.OutlinedButton
import androidx.compose.material3.OutlinedTextField
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.collectAsState
import androidx.compose.runtime.getValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.input.nestedscroll.nestedScroll
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.tooling.preview.Preview
import androidx.hilt.navigation.compose.hiltViewModel
import net.taler.anastasis.R
import net.taler.anastasis.models.RecoveryStates
import net.taler.anastasis.models.ReducerState
import net.taler.anastasis.ui.pages.WizardPage
import net.taler.anastasis.ui.theme.LocalSpacing
import net.taler.anastasis.viewmodels.FakeRecoveryViewModel
import net.taler.anastasis.viewmodels.ReducerViewModel
import net.taler.anastasis.viewmodels.ReducerViewModelI
import net.taler.common.CryptoUtils
import java.io.IOException
import java.util.UUID
@Composable
fun RecoveryFinishedScreen(
viewModel: ReducerViewModelI = hiltViewModel<ReducerViewModel>(),
) {
val state by viewModel.reducerState.collectAsState()
val reducerState = state as? ReducerState.Recovery
?: error("invalid reducer state type")
val recoveryDocument = reducerState.recoveryDocument!!
val coreSecret = reducerState.coreSecret!!
WizardPage(
title = stringResource(R.string.recovery_finished_title),
onBackClicked = { viewModel.goHome() },
showNext = false,
showPrev = false,
) {
LazyColumn(
modifier = Modifier
.fillMaxSize()
.nestedScroll(it),
horizontalAlignment = Alignment.CenterHorizontally,
) {
item {
Box(
modifier = Modifier
.padding(LocalSpacing.current.large)
.background(MaterialTheme.colorScheme.primary, shape = CircleShape)
.fillMaxWidth(0.4f)
.aspectRatio(1f),
contentAlignment = Alignment.Center,
) {
Icon(
Icons.Default.CloudDone,
modifier = Modifier.fillMaxSize(0.5f),
tint = MaterialTheme.colorScheme.onPrimary,
contentDescription = stringResource(R.string.success),
)
}
}
item {
Text(
recoveryDocument.secretName,
modifier = Modifier.padding(LocalSpacing.current.medium),
style = MaterialTheme.typography.titleLarge,
)
}
item {
if (coreSecret.value.length < 1000 && coreSecret.mime == "plain/text") {
OutlinedTextField(
modifier = Modifier
.padding(
start = LocalSpacing.current.medium,
end = LocalSpacing.current.medium,
bottom = LocalSpacing.current.small,
)
.fillMaxWidth(),
value = CryptoUtils.decodeCrock(coreSecret.value).toString(Charsets.UTF_8),
readOnly = true,
onValueChange = {},
label = { Text(stringResource(R.string.secret_text)) },
)
} else {
val context = LocalContext.current
val launcher = rememberLauncherForActivityResult(
contract = ActivityResultContracts.CreateDocument(coreSecret.mime ?: "application/octet-stream"),
onResult = { uri ->
if (uri != null) {
val outputStream = context.contentResolver.openOutputStream(uri)
if (outputStream != null) {
try {
// TODO: we should probably listen to Java and not block
outputStream.write(CryptoUtils.decodeCrock(coreSecret.value))
outputStream.flush()
outputStream.close()
Toast.makeText(
context,
context.getString(R.string.recovery_file_saved),
Toast.LENGTH_SHORT,
).show()
} catch (e: IOException) {
e.printStackTrace()
}
}
}
}
)
OutlinedButton(onClick = {
launcher.launch(coreSecret.filename ?: UUID.randomUUID().toString())
}) {
Text(stringResource(R.string.recovery_download_file))
}
Log.d("RecoveryFinishedScreen", "data = ${coreSecret.value}")
Log.d("RecoveryFinishedScreen", "filename = ${coreSecret.filename}")
Log.d("RecoveryFinishedScreen", "mimeType = ${coreSecret.mime}")
}
}
}
}
}
@Preview
@Composable
fun RecoveryFinishedScreenPreview() {
RecoveryFinishedScreen(
viewModel = FakeRecoveryViewModel(
recoveryState = RecoveryStates.RecoveryFinished,
)
)
}
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