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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.reducers
import android.util.Log
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Job
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.catch
import kotlinx.coroutines.flow.launchIn
import kotlinx.coroutines.flow.onEach
import kotlinx.coroutines.launch
import net.taler.anastasis.Utils
import net.taler.anastasis.backend.AnastasisReducerApi
import net.taler.anastasis.models.AuthenticationProviderStatus
import net.taler.anastasis.models.ContinentInfo
import net.taler.anastasis.models.CountryInfo
import net.taler.anastasis.models.ReducerArgs
import net.taler.anastasis.models.ReducerState
import org.json.JSONObject
import kotlin.time.Duration.Companion.seconds
class ReducerManager(
private val state: MutableStateFlow<ReducerState?>,
private val api: AnastasisReducerApi,
private val scope: CoroutineScope,
) {
private companion object {
const val PROVIDER_SYNC_PERIOD = 20
}
private var providerSyncingJob: Job? = null
// TODO: error handling!
fun startBackup() = scope.launch {
state.value = api.startBackup()
}
fun startRecovery() = scope.launch {
state.value = api.startRecovery()
}
fun back() = scope.launch {
state.value?.let { initialState ->
api.reduceAction(initialState, "back")
.onSuccess { newState ->
state.value = newState
}
}
}
fun selectContinent(continent: ContinentInfo) = scope.launch {
state.value?.let { initialState ->
api.reduceAction(initialState, "select_continent") {
put("continent", continent.name)
}.onSuccess { newState ->
state.value = newState
}
}
}
fun selectCountry(country: CountryInfo) = scope.launch {
state.value?.let { initialState ->
api.reduceAction(initialState, "select_country") {
put("country_code", country.code)
// TODO: stop hardcoding currency!
put("currency", "EUR")
}.onSuccess { newState ->
state.value = newState
}
}
}
fun enterUserAttributes(userAttributes: Map<String, String>) = scope.launch {
state.value?.let { initialState ->
api.reduceAction(initialState, "enter_user_attributes") {
put("identity_attributes", JSONObject(userAttributes))
}.onSuccess { newState ->
state.value = newState
}
}
}
fun startSyncingProviders() {
if (providerSyncingJob != null) return
providerSyncingJob = Utils.tickerFlow(PROVIDER_SYNC_PERIOD.seconds)
.onEach {
state.value?.let { initialState ->
// Only run sync when not all providers are synced
if (initialState is ReducerState.Backup) {
initialState.authenticationProviders?.flatMap {
listOf(it.value)
}?.fold(false) { a, b ->
a || (b !is AuthenticationProviderStatus.Ok)
}?.let { sync ->
if (!sync) {
Log.d("ReducerManager", "All providers are synced")
return@onEach
}
}
}
Log.d("ReducerManager", "Syncing providers...")
api.reduceAction(initialState, "sync_providers")
.onSuccess { newState ->
state.value = newState
}
.onError {
Log.d("ReducerManager", "Sync error: $it")
}
}
}
.catch {
Log.d("ReducerManager", "Could not sync providers")
}
.launchIn(scope)
}
fun stopSyncingProviders() {
providerSyncingJob?.cancel()
providerSyncingJob = null
}
fun addAuthentication(args: ReducerArgs.AddAuthentication) = scope.launch {
state.value?.let { initialState ->
api.reduceAction(initialState, "add_authentication", args)
.onSuccess { newState ->
state.value = newState
}
}
}
fun deleteAuthentication(index: Int) = scope.launch {
state.value?.let { initialState ->
api.reduceAction(initialState, "delete_authentication") {
put("index", index)
}.onSuccess { newState ->
state.value = newState
}
}
}
}
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