mirror of https://github.com/TeamNewPipe/NewPipe
71 lines
3.3 KiB
Kotlin
71 lines
3.3 KiB
Kotlin
package org.schabi.newpipe.local.feed
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import android.content.Context
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import androidx.lifecycle.LiveData
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import androidx.lifecycle.MutableLiveData
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import androidx.lifecycle.ViewModel
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import androidx.lifecycle.ViewModelProvider
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import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
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import io.reactivex.rxjava3.core.Flowable
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import io.reactivex.rxjava3.functions.Function4
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import io.reactivex.rxjava3.schedulers.Schedulers
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import org.schabi.newpipe.database.feed.model.FeedGroupEntity
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import org.schabi.newpipe.extractor.stream.StreamInfoItem
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import org.schabi.newpipe.local.feed.service.FeedEventManager
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import org.schabi.newpipe.local.feed.service.FeedEventManager.Event.ErrorResultEvent
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import org.schabi.newpipe.local.feed.service.FeedEventManager.Event.IdleEvent
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import org.schabi.newpipe.local.feed.service.FeedEventManager.Event.ProgressEvent
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import org.schabi.newpipe.local.feed.service.FeedEventManager.Event.SuccessResultEvent
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import org.schabi.newpipe.util.DEFAULT_THROTTLE_TIMEOUT
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import java.time.OffsetDateTime
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import java.util.concurrent.TimeUnit
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class FeedViewModel(applicationContext: Context, val groupId: Long = FeedGroupEntity.GROUP_ALL_ID) : ViewModel() {
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class Factory(val context: Context, val groupId: Long = FeedGroupEntity.GROUP_ALL_ID) : ViewModelProvider.Factory {
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@Suppress("UNCHECKED_CAST")
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override fun <T : ViewModel?> create(modelClass: Class<T>): T {
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return FeedViewModel(context.applicationContext, groupId) as T
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}
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}
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private var feedDatabaseManager: FeedDatabaseManager = FeedDatabaseManager(applicationContext)
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private val mutableStateLiveData = MutableLiveData<FeedState>()
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val stateLiveData: LiveData<FeedState> = mutableStateLiveData
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private var combineDisposable = Flowable
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.combineLatest(
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FeedEventManager.events(),
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feedDatabaseManager.asStreamItems(groupId),
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feedDatabaseManager.notLoadedCount(groupId),
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feedDatabaseManager.oldestSubscriptionUpdate(groupId),
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Function4 { t1: FeedEventManager.Event, t2: List<StreamInfoItem>, t3: Long, t4: List<OffsetDateTime> ->
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return@Function4 CombineResultHolder(t1, t2, t3, t4.firstOrNull())
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}
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)
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.throttleLatest(DEFAULT_THROTTLE_TIMEOUT, TimeUnit.MILLISECONDS)
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.subscribeOn(Schedulers.io())
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.observeOn(AndroidSchedulers.mainThread())
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.subscribe { (event, listFromDB, notLoadedCount, oldestUpdate) ->
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mutableStateLiveData.postValue(
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when (event) {
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is IdleEvent -> FeedState.LoadedState(listFromDB, oldestUpdate, notLoadedCount)
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is ProgressEvent -> FeedState.ProgressState(event.currentProgress, event.maxProgress, event.progressMessage)
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is SuccessResultEvent -> FeedState.LoadedState(listFromDB, oldestUpdate, notLoadedCount, event.itemsErrors)
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is ErrorResultEvent -> FeedState.ErrorState(event.error)
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}
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)
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if (event is ErrorResultEvent || event is SuccessResultEvent) {
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FeedEventManager.reset()
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}
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}
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override fun onCleared() {
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super.onCleared()
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combineDisposable.dispose()
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}
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private data class CombineResultHolder(val t1: FeedEventManager.Event, val t2: List<StreamInfoItem>, val t3: Long, val t4: OffsetDateTime?)
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}
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