150 lines
5.7 KiB
Kotlin
150 lines
5.7 KiB
Kotlin
/* Copyright 2019 Joel Pyska
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*
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* This file is a part of Tusky.
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*
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* This program is free software; you can redistribute it and/or modify it under the terms of the
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* GNU General Public License as published by the Free Software Foundation; either version 3 of the
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* License, or (at your option) any later version.
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*
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* Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
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* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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* Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with Tusky; if not,
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* see <http://www.gnu.org/licenses>. */
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package com.keylesspalace.tusky.components.report.adapter
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import android.annotation.SuppressLint
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import androidx.lifecycle.MutableLiveData
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import androidx.paging.ItemKeyedDataSource
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import com.keylesspalace.tusky.entity.Status
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import com.keylesspalace.tusky.network.MastodonApi
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import com.keylesspalace.tusky.util.NetworkState
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import io.reactivex.disposables.CompositeDisposable
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import io.reactivex.functions.BiFunction
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import java.util.concurrent.Executor
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class StatusesDataSource(private val accountId: String,
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private val mastodonApi: MastodonApi,
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private val disposables: CompositeDisposable,
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private val retryExecutor: Executor) : ItemKeyedDataSource<String, Status>() {
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val networkStateAfter = MutableLiveData<NetworkState>()
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val networkStateBefore = MutableLiveData<NetworkState>()
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private var retryAfter: (() -> Any)? = null
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private var retryBefore: (() -> Any)? = null
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private var retryInitial: (() -> Any)? = null
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val initialLoad = MutableLiveData<NetworkState>()
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fun retryAllFailed() {
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var prevRetry = retryInitial
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retryInitial = null
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prevRetry?.let {
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retryExecutor.execute {
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it.invoke()
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}
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}
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prevRetry = retryAfter
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retryAfter = null
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prevRetry?.let {
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retryExecutor.execute {
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it.invoke()
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}
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}
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prevRetry = retryBefore
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retryBefore = null
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prevRetry?.let {
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retryExecutor.execute {
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it.invoke()
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}
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}
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}
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@SuppressLint("CheckResult")
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override fun loadInitial(params: LoadInitialParams<String>, callback: LoadInitialCallback<Status>) {
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networkStateAfter.postValue(NetworkState.LOADED)
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networkStateBefore.postValue(NetworkState.LOADED)
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retryAfter = null
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retryBefore = null
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retryInitial = null
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initialLoad.postValue(NetworkState.LOADING)
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val initialKey = params.requestedInitialKey
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if (initialKey == null) {
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mastodonApi.accountStatusesObservable(accountId, null, null, params.requestedLoadSize, true)
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} else {
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mastodonApi.statusObservable(initialKey).zipWith(
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mastodonApi.accountStatusesObservable(accountId, params.requestedInitialKey, null, params.requestedLoadSize - 1, true),
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BiFunction { status: Status, list: List<Status> ->
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val ret = ArrayList<Status>()
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ret.add(status)
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ret.addAll(list)
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return@BiFunction ret
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})
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}
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.doOnSubscribe {
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disposables.add(it)
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}
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.subscribe(
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{
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callback.onResult(it)
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initialLoad.postValue(NetworkState.LOADED)
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},
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{
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retryInitial = {
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loadInitial(params, callback)
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}
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initialLoad.postValue(NetworkState.error(it.message))
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}
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)
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}
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@SuppressLint("CheckResult")
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override fun loadAfter(params: LoadParams<String>, callback: LoadCallback<Status>) {
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networkStateAfter.postValue(NetworkState.LOADING)
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retryAfter = null
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mastodonApi.accountStatusesObservable(accountId, params.key, null, params.requestedLoadSize, true)
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.doOnSubscribe {
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disposables.add(it)
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}
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.subscribe(
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{
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callback.onResult(it)
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networkStateAfter.postValue(NetworkState.LOADED)
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},
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{
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retryAfter = {
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loadAfter(params, callback)
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}
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networkStateAfter.postValue(NetworkState.error(it.message))
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}
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)
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}
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@SuppressLint("CheckResult")
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override fun loadBefore(params: LoadParams<String>, callback: LoadCallback<Status>) {
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networkStateBefore.postValue(NetworkState.LOADING)
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retryBefore = null
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mastodonApi.accountStatusesObservable(accountId, null, params.key, params.requestedLoadSize, true)
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.doOnSubscribe {
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disposables.add(it)
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}
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.subscribe(
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{
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callback.onResult(it)
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networkStateBefore.postValue(NetworkState.LOADED)
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},
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{
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retryBefore = {
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loadBefore(params, callback)
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}
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networkStateBefore.postValue(NetworkState.error(it.message))
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}
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)
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}
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override fun getKey(item: Status): String = item.id
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} |