Pixelcat-App-Android/app/src/main/kotlin/at/connyduck/pixelcat/components/notifications/NotificationsViewModel.kt

53 lines
1.9 KiB
Kotlin

/*
* Copyright (C) 2020 Conny Duck
*
* This file is part of Pixelcat.
*
* Pixelcat 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.
*
* Pixelcat 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 at.connyduck.pixelcat.components.notifications
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import androidx.paging.ExperimentalPagingApi
import androidx.paging.Pager
import androidx.paging.PagingConfig
import androidx.paging.cachedIn
import at.connyduck.pixelcat.db.AccountManager
import at.connyduck.pixelcat.db.AppDatabase
import at.connyduck.pixelcat.network.FediverseApi
import kotlinx.coroutines.FlowPreview
import kotlinx.coroutines.flow.asFlow
import kotlinx.coroutines.flow.flatMapConcat
import javax.inject.Inject
@OptIn(ExperimentalPagingApi::class, FlowPreview::class)
class NotificationsViewModel @Inject constructor(
accountManager: AccountManager,
private val db: AppDatabase,
private val api: FediverseApi
) : ViewModel() {
val notificationsFlow = accountManager::activeAccount.asFlow()
.flatMapConcat { activeAccount ->
Pager(
config = PagingConfig(pageSize = 10, enablePlaceholders = false),
remoteMediator = NotificationsRemoteMediator(activeAccount?.id!!, api, db),
pagingSourceFactory = { db.notificationsDao().notifications(activeAccount.id) }
).flow
}
.cachedIn(viewModelScope)
}