129 lines
4.4 KiB
Kotlin
129 lines
4.4 KiB
Kotlin
package org.moire.ultrasonic.model
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import android.app.Application
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import android.os.Bundle
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import androidx.lifecycle.LiveData
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import androidx.lifecycle.MutableLiveData
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import androidx.swiperefreshlayout.widget.SwipeRefreshLayout
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import org.moire.ultrasonic.api.subsonic.models.AlbumListType
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import org.moire.ultrasonic.domain.MusicDirectory
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import org.moire.ultrasonic.service.MusicService
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import org.moire.ultrasonic.util.Constants
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import org.moire.ultrasonic.util.Settings
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class AlbumListModel(application: Application) : GenericListModel(application) {
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val list: MutableLiveData<List<MusicDirectory.Album>> = MutableLiveData()
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var lastType: String? = null
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private var loadedUntil: Int = 0
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fun getAlbumList(
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refresh: Boolean,
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swipe: SwipeRefreshLayout,
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args: Bundle
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): LiveData<List<MusicDirectory.Album>> {
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// Don't reload the data if navigating back to the view that was active before.
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// This way, we keep the scroll position
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val albumListType = args.getString(Constants.INTENT_ALBUM_LIST_TYPE)!!
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if (refresh || list.value?.isEmpty() != false || albumListType != lastType) {
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lastType = albumListType
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backgroundLoadFromServer(refresh, swipe, args)
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}
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return list
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}
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private fun getAlbumsOfArtist(
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musicService: MusicService,
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refresh: Boolean,
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id: String,
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name: String?
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) {
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list.postValue(musicService.getArtist(id, name, refresh))
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}
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override fun load(
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isOffline: Boolean,
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useId3Tags: Boolean,
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musicService: MusicService,
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refresh: Boolean,
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args: Bundle
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) {
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super.load(isOffline, useId3Tags, musicService, refresh, args)
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val albumListType = args.getString(Constants.INTENT_ALBUM_LIST_TYPE)!!
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val size = args.getInt(Constants.INTENT_ALBUM_LIST_SIZE, 0)
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var offset = args.getInt(Constants.INTENT_ALBUM_LIST_OFFSET, 0)
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val append = args.getBoolean(Constants.INTENT_APPEND, false)
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val musicDirectory: List<MusicDirectory.Album>
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val musicFolderId = if (showSelectFolderHeader(args)) {
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activeServerProvider.getActiveServer().musicFolderId
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} else {
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null
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}
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// If we are refreshing the random list, we want to avoid items moving across the screen,
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// by clearing the list first
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if (refresh && !append && albumListType == "random") {
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list.postValue(listOf())
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}
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// Handle the logic for endless scrolling:
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// If appending the existing list, set the offset from where to load
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if (append) offset += (size + loadedUntil)
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if (albumListType == Constants.ALBUMS_OF_ARTIST) {
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return getAlbumsOfArtist(
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musicService,
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refresh,
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args.getString(Constants.INTENT_ID, ""),
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args.getString(Constants.INTENT_NAME, "")
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)
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}
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if (useId3Tags) {
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musicDirectory =
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musicService.getAlbumList2(
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albumListType, size,
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offset, musicFolderId
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)
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} else {
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musicDirectory = musicService.getAlbumList(
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albumListType, size,
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offset, musicFolderId
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)
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}
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currentListIsSortable = isCollectionSortable(albumListType)
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if (append && list.value != null) {
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val newList = ArrayList<MusicDirectory.Album>()
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newList.addAll(list.value!!)
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newList.addAll(musicDirectory)
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list.postValue(newList)
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} else {
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list.postValue(musicDirectory)
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}
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loadedUntil = offset
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}
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override fun showSelectFolderHeader(args: Bundle?): Boolean {
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if (args == null) return false
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val albumListType = args.getString(Constants.INTENT_ALBUM_LIST_TYPE)!!
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val isAlphabetical = (albumListType == AlbumListType.SORTED_BY_NAME.toString()) ||
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(albumListType == AlbumListType.SORTED_BY_ARTIST.toString())
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return !isOffline() && !Settings.shouldUseId3Tags && isAlphabetical
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}
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private fun isCollectionSortable(albumListType: String): Boolean {
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return albumListType != "newest" && albumListType != "random" &&
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albumListType != "highest" && albumListType != "recent" &&
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albumListType != "frequent"
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}
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}
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