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/*
* Copyright (C) 2023 MURENA SAS
* Copyright (C) 2021 E FOUNDATION
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
*/
package foundation.e.advancedprivacy.features.dashboard
import androidx.annotation.StringRes
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import androidx.navigation.NavDirections
import foundation.e.advancedprivacy.R
import foundation.e.advancedprivacy.domain.usecases.GetQuickPrivacyStateUseCase
import foundation.e.advancedprivacy.domain.usecases.TrackersStatisticsUseCase
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.delay
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.MutableSharedFlow
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.asSharedFlow
import kotlinx.coroutines.flow.asStateFlow
import kotlinx.coroutines.flow.first
import kotlinx.coroutines.flow.flatMapLatest
import kotlinx.coroutines.flow.map
import kotlinx.coroutines.flow.merge
import kotlinx.coroutines.flow.update
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext
class DashboardViewModel(
private val getPrivacyStateUseCase: GetQuickPrivacyStateUseCase,
private val trackersStatisticsUseCase: TrackersStatisticsUseCase,
) : ViewModel() {
private val _state = MutableStateFlow(DashboardState())
val state = _state.asStateFlow()
private val _singleEvents = MutableSharedFlow<SingleEvent>()
val singleEvents = _singleEvents.asSharedFlow()
private val _navigate = MutableSharedFlow<NavDirections>()
val navigate = _navigate.asSharedFlow()
init {
viewModelScope.launch(Dispatchers.IO) { trackersStatisticsUseCase.initAppList() }
}
suspend fun doOnStartedState() = withContext(Dispatchers.IO) {
merge(
getPrivacyStateUseCase.quickPrivacyState.map {
_state.update { s -> s.copy(quickPrivacyState = it) }
},
getPrivacyStateUseCase.ipScramblingMode.map {
_state.update { s -> s.copy(ipScramblingMode = it) }
},
trackersStatisticsUseCase.listenUpdates().flatMapLatest {
fetchStatistics()
},
getPrivacyStateUseCase.trackerMode.map {
_state.update { s -> s.copy(trackerMode = it) }
},
getPrivacyStateUseCase.isLocationHidden.map {
_state.update { s -> s.copy(isLocationHidden = it) }
},
getPrivacyStateUseCase.locationMode.map {
_state.update { s -> s.copy(locationMode = it) }
},
getPrivacyStateUseCase.otherVpnRunning.map {
_singleEvents.emit(
SingleEvent.ToastMessageSingleEvent(
R.string.ipscrambling_error_always_on_vpn_already_running,
listOf(it.label ?: "")
)
)
}
).collect {}
}
fun submitAction(action: Action) = viewModelScope.launch {
when (action) {
is Action.ToggleTrackers -> {
getPrivacyStateUseCase.toggleTrackers(action.enabled)
// Add delay here to prevent race condition with trackers state.
delay(200)
fetchStatistics().first()
}
is Action.ToggleLocation -> getPrivacyStateUseCase.toggleLocation(action.enabled)
is Action.ToggleIpScrambling ->
getPrivacyStateUseCase.toggleIpScrambling(action.enabled)
is Action.ShowFakeMyLocationAction ->
_navigate.emit(DashboardFragmentDirections.gotoFakeLocationFragment())
is Action.ShowAppsPermissions ->
_navigate.emit(DashboardFragmentDirections.gotoSettingsPermissionsActivity())
is Action.ShowInternetActivityPrivacyAction ->
_navigate.emit(DashboardFragmentDirections.gotoInternetPrivacyFragment())
is Action.ShowTrackers ->
_navigate.emit(DashboardFragmentDirections.gotoTrackersFragment())
is Action.ShowMostLeakedApp -> actionShowMostLeakedApp()
}
}
private suspend fun fetchStatistics(): Flow<Unit> = withContext(Dispatchers.IO) {
trackersStatisticsUseCase.getNonBlockedTrackersCount().map { nonBlockedTrackersCount ->
trackersStatisticsUseCase.getDayStatistics().let { (dayStatistics, trackersCount) ->
_state.update { s ->
s.copy(
dayStatistics = dayStatistics.callsBlockedNLeaked,
dayLabels = dayStatistics.periods,
dayGraduations = dayStatistics.graduations,
leakedTrackersCount = dayStatistics.trackersCount,
trackersCount = trackersCount,
allowedTrackersCount = nonBlockedTrackersCount
)
}
}
}
}
private suspend fun actionShowMostLeakedApp() = withContext(Dispatchers.IO) {
_navigate.emit(
trackersStatisticsUseCase.getMostLeakedApp()?.let {
DashboardFragmentDirections.gotoAppTrackersFragment(appUid = it.uid)
} ?: DashboardFragmentDirections.gotoTrackersFragment()
)
}
sealed class SingleEvent {
data class ToastMessageSingleEvent(
@StringRes val message: Int,
val args: List<Any> = emptyList()
) : SingleEvent()
}
sealed class Action {
data class ToggleTrackers(val enabled: Boolean) : Action()
data class ToggleLocation(val enabled: Boolean) : Action()
data class ToggleIpScrambling(val enabled: Boolean) : Action()
object ShowFakeMyLocationAction : Action()
object ShowInternetActivityPrivacyAction : Action()
object ShowAppsPermissions : Action()
object ShowTrackers : Action()
object ShowMostLeakedApp : Action()
}
}
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