Improving Automotive search

CHANGELOG.md

@@ -7,6 +7,8 @@
         ([#583](https://github.com/Automattic/pocket-casts-android/pull/583)).
     *   Add categories to recommendations screen
         ([#675](https://github.com/Automattic/pocket-casts-android/pull/675)).
+    *   Improved the Android Automotive search
+        ([#681](https://github.com/Automattic/pocket-casts-android/pull/681)).
 
 7.29
 -----

modules/services/model/src/main/java/au/com/shiftyjelly/pocketcasts/models/db/dao/EpisodeDao.kt

@@ -133,9 +133,6 @@ abstract class EpisodeDao {
     @Query("SELECT * FROM episodes WHERE podcast_id = :podcastUuid ORDER BY published_date DESC, added_date DESC LIMIT 1")
     abstract fun findLatestRx(podcastUuid: String): Maybe<Episode>
 
-    @Query("SELECT * FROM episodes WHERE podcast_id = :podcastUuid AND playing_status != 2 ORDER BY published_date DESC LIMIT 10")
-    abstract fun findPodcastEpisodesForMediaBrowserSearch(podcastUuid: String): List<Episode>
-
     @Query("SELECT * FROM episodes WHERE (download_task_id IS NOT NULL OR episode_status == :downloadEpisodeStatusEnum OR (episode_status == :failedEpisodeStatusEnum AND last_download_attempt_date > :failedDownloadCutoff AND archived == 0)) ORDER BY last_download_attempt_date DESC")
     abstract fun observeDownloadingEpisodesIncludingFailed(failedDownloadCutoff: Long, failedEpisodeStatusEnum: EpisodeStatusEnum = EpisodeStatusEnum.DOWNLOAD_FAILED, downloadEpisodeStatusEnum: EpisodeStatusEnum = EpisodeStatusEnum.DOWNLOADED): Flowable<List<Episode>>
 

modules/services/repositories/src/main/java/au/com/shiftyjelly/pocketcasts/repositories/playback/MediaSessionManager.kt

@@ -661,7 +661,7 @@ class MediaSessionManager(
      * ‘Listen to [filter name] in Pocket Casts’
      * ‘Listen to Up Next in Pocket Casts’
      * ‘Play Up Next in Pocket Casts’
-     * ‘Play New Releasees Next in Pocket Casts’
+     * ‘Play New Releases Next in Pocket Casts’
      */
     private fun performPlayFromSearch(searchTerm: String?) {
         Timber.d("performSearch $searchTerm")

modules/services/repositories/src/main/java/au/com/shiftyjelly/pocketcasts/repositories/playback/PlaybackService.kt

@@ -23,6 +23,7 @@ import au.com.shiftyjelly.pocketcasts.models.entity.Episode
 import au.com.shiftyjelly.pocketcasts.models.entity.Podcast
 import au.com.shiftyjelly.pocketcasts.models.to.FolderItem
 import au.com.shiftyjelly.pocketcasts.models.to.SubscriptionStatus
+import au.com.shiftyjelly.pocketcasts.models.type.PodcastsSortType
 import au.com.shiftyjelly.pocketcasts.preferences.Settings
 import au.com.shiftyjelly.pocketcasts.repositories.extensions.id
 import au.com.shiftyjelly.pocketcasts.repositories.notification.NotificationDrawer
@@ -66,7 +67,6 @@ const val RECENT_ROOT = "__RECENT__"
 const val SUGGESTED_ROOT = "__SUGGESTED__"
 const val FOLDER_ROOT_PREFIX = "__FOLDER__"
 
-private const val MAX_SEARCH_RESULT_COUNT = 10
 private const val MEDIA_SEARCH_SUPPORTED = "android.media.browse.SEARCH_SUPPORTED"
 private const val CONTENT_STYLE_SUPPORTED = "android.media.browse.CONTENT_STYLE_SUPPORTED"
 
@@ -569,86 +569,40 @@ open class PlaybackService : MediaBrowserServiceCompat(), CoroutineScope {
     override fun onSearch(query: String, extras: Bundle?, result: Result<List<MediaBrowserCompat.MediaItem>>) {
         result.detach()
         launch {
-            result.sendResult(performSearch(query))
+            result.sendResult(podcastSearch(query))
         }
     }
 
     /**
-     * Voice search.
-     *   "Play Up Next"
-     *   "Play Material"
-     *   "Play Material in Pocket Casts"
+     * Search for local and remote podcasts.
+     * Returning an empty list displays "No media available for browsing here"
+     * Returning null displays "Something went wrong". There is no way to display our own error message.
      */
-    private fun performSearch(searchTerm: String): List<MediaBrowserCompat.MediaItem> {
-        val searchResults = mutableListOf<MediaBrowserCompat.MediaItem>()
-
-        val query = searchTerm.trim { it <= ' ' }.lowercase()
-        if (query.startsWith("up next") || query.startsWith("next episode") || query.startsWith("next podcast")) {
-            val upNextEpisodes = playbackManager.upNextQueue.queueEpisodes.take(10)
-            for (episode in upNextEpisodes) {
-                if (episode is Episode) {
-                    podcastManager.findPodcastByUuid(episode.podcastUuid)?.let { parentPodcast ->
-                        addToResultsIfNotExists(AutoConverter.convertEpisodeToMediaItem(context = this, episode = episode, parentPodcast = parentPodcast), searchResults)
-                    }
-                } else {
-                    // TODO: UserEpisode
-                }
-            }
-
-            return searchResults
-        }
-
-        val options = MediaSessionManager.calculateSearchQueryOptions(query)
-        for (option in options) {
-            val matchingPodcast = podcastManager.searchPodcastByTitle(option) ?: continue
-            val latestEpisodeUuid = matchingPodcast.latestEpisodeUuid
-            val latestEpisode = if (latestEpisodeUuid == null) null else episodeManager.findByUuid(latestEpisodeUuid)
-
-            if (latestEpisode != null) {
-                addToResultsIfNotExists(AutoConverter.convertEpisodeToMediaItem(context = this, episode = latestEpisode, parentPodcast = matchingPodcast), searchResults)
-                if (searchResults.size >= MAX_SEARCH_RESULT_COUNT) {
-                    return searchResults
-                }
-            }
-
-            // add a few of the latest episodes from this podcast
-            episodeManager.findPodcastEpisodesForMediaBrowserSearch(matchingPodcast.uuid).forEach { episode ->
-                addToResultsIfNotExists(AutoConverter.convertEpisodeToMediaItem(context = this, episode = episode, parentPodcast = matchingPodcast), searchResults)
-            }
-            if (searchResults.size >= MAX_SEARCH_RESULT_COUNT) {
-                return searchResults
-            }
-        }
-
-        for (option in options) {
-            episodeManager.findFirstBySearchQuery(option)?.let { firstMatch ->
-                podcastManager.findPodcastByUuid(firstMatch.podcastUuid)?.let { parentPodcast ->
-                    addToResultsIfNotExists(AutoConverter.convertEpisodeToMediaItem(context = this, episode = firstMatch, parentPodcast = parentPodcast), searchResults)
-                }
-
-                if (searchResults.size >= MAX_SEARCH_RESULT_COUNT) {
-                    return searchResults
-                }
+    private suspend fun podcastSearch(term: String): List<MediaBrowserCompat.MediaItem>? {
+        val termCleaned = term.trim()
+        // search for local podcasts
+        val localPodcasts = podcastManager.findSubscribedNoOrder()
+            .filter { it.title.contains(termCleaned, ignoreCase = true) || it.author.contains(termCleaned, ignoreCase = true) }
+            .sortedBy { PodcastsSortType.cleanStringForSort(it.title) }
+        // search for podcasts on the server
+        val serverPodcasts = try {
+            // only search the server if the term is over one character long
+            if (termCleaned.length <= 1) {
+                emptyList()
+            } else {
+                serverManager.searchForPodcastsSuspend(searchTerm = term, resources = resources).searchResults
             }
-        }
-
-        if (searchResults.isEmpty()) { // Try the server
-            serverManager.searchForPodcastsRx(query).blockingGet().searchResults.forEach { podcast ->
-                val mediaItem = convertPodcastToMediaItem(podcast = podcast, context = this)
-                addToResultsIfNotExists(mediaItem, searchResults)
+        } catch (ex: Exception) {
+            Timber.e(ex)
+            // display the error message when the server call fails only if there is no local podcasts to display
+            if (localPodcasts.isEmpty()) {
+                return null
             }
+            emptyList()
         }
-
-        return searchResults
-    }
-
-    private fun addToResultsIfNotExists(item: MediaBrowserCompat.MediaItem?, searchResults: MutableList<MediaBrowserCompat.MediaItem>) {
-        item ?: return
-
-        for (existingItem in searchResults) {
-            if (existingItem.mediaId == item.mediaId) return
-        }
-
-        searchResults.add(item)
+        // merge the local and remote podcasts
+        val podcasts = (localPodcasts + serverPodcasts).distinctBy { it.uuid }
+        // convert podcasts to the media browser format
+        return podcasts.mapNotNull { podcast -> convertPodcastToMediaItem(context = this, podcast = podcast) }
     }
 }

modules/services/repositories/src/main/java/au/com/shiftyjelly/pocketcasts/repositories/podcast/EpisodeManager.kt

@@ -40,7 +40,6 @@ interface EpisodeManager {
     fun findLatestUnfinishedEpisodeByPodcast(podcast: Podcast): Episode?
     fun findLatestEpisodeToPlay(): Episode?
     fun observeEpisodesByPodcastOrderedRx(podcast: Podcast): Flowable<List<Episode>>
-    fun findPodcastEpisodesForMediaBrowserSearch(podcastUuid: String): List<Episode>
     fun observeEpisodesWhere(queryAfterWhere: String): Flowable<List<Episode>>
     fun observeDownloadingEpisodes(): LiveData<List<Episode>>
 

modules/services/repositories/src/main/java/au/com/shiftyjelly/pocketcasts/repositories/podcast/EpisodeManagerImpl.kt

@@ -173,10 +173,6 @@ class EpisodeManagerImpl @Inject constructor(
         }
     }
 
-    override fun findPodcastEpisodesForMediaBrowserSearch(podcastUuid: String): List<Episode> {
-        return episodeDao.findPodcastEpisodesForMediaBrowserSearch(podcastUuid)
-    }
-
     override fun findEpisodesWhere(queryAfterWhere: String): List<Episode> {
         return episodeDao.findEpisodes(SimpleSQLiteQuery("SELECT episodes.* FROM episodes JOIN podcasts ON episodes.podcast_id = podcasts.uuid WHERE podcasts.subscribed = 1 AND $queryAfterWhere"))
     }

modules/services/servers/src/main/java/au/com/shiftyjelly/pocketcasts/servers/ServerManager.kt

@@ -1,9 +1,12 @@
 package au.com.shiftyjelly.pocketcasts.servers
 
+import android.content.res.Resources
 import android.os.Build
 import android.os.Handler
 import android.os.Looper
 import android.text.TextUtils
+import au.com.shiftyjelly.pocketcasts.localization.R
+import au.com.shiftyjelly.pocketcasts.localization.helper.LocaliseHelper
 import au.com.shiftyjelly.pocketcasts.models.entity.Podcast
 import au.com.shiftyjelly.pocketcasts.models.to.Share
 import au.com.shiftyjelly.pocketcasts.preferences.Settings
@@ -13,6 +16,7 @@ import au.com.shiftyjelly.pocketcasts.servers.model.AuthResultModel
 import au.com.shiftyjelly.pocketcasts.utils.log.LogBuffer
 import io.reactivex.Single
 import io.reactivex.SingleEmitter
+import kotlinx.coroutines.suspendCancellableCoroutine
 import okhttp3.Call
 import okhttp3.Callback
 import okhttp3.FormBody
@@ -28,6 +32,8 @@ import java.io.IOException
 import java.util.Locale
 import javax.inject.Inject
 import javax.inject.Singleton
+import kotlin.coroutines.resume
+import kotlin.coroutines.resumeWithException
 
 @Singleton
 open class ServerManager @Inject constructor(
@@ -119,6 +125,39 @@ open class ServerManager @Inject constructor(
         )
     }
 
+    suspend fun searchForPodcastsSuspend(searchTerm: String, resources: Resources): PodcastSearch {
+        if (searchTerm.isEmpty()) {
+            return PodcastSearch()
+        }
+        return suspendCancellableCoroutine { continuation ->
+            searchForPodcasts(
+                searchTerm = searchTerm,
+                callback = object : ServerCallback<PodcastSearch> {
+                    override fun dataReturned(result: PodcastSearch?) {
+                        if (result == null) {
+                            continuation.resumeWithException(Exception(resources.getString(R.string.error_search_failed)))
+                        } else {
+                            continuation.resume(result)
+                        }
+                    }
+
+                    override fun onFailed(
+                        errorCode: Int,
+                        userMessage: String?,
+                        serverMessageId: String?,
+                        serverMessage: String?,
+                        throwable: Throwable?,
+                    ) {
+                        val message = LocaliseHelper.serverMessageIdToMessage(serverMessageId, resources::getString)
+                            ?: userMessage
+                            ?: resources.getString(R.string.error_search_failed)
+                        continuation.resumeWithException(throwable ?: Exception(message))
+                    }
+                }
+            )
+        }
+    }
+
     open fun searchForPodcastsRx(searchTerm: String): Single<PodcastSearch> {
         return convertCallToRx { emitter ->
             searchForPodcasts(searchTerm, getRxServerCallback(emitter))