From 7e4f7162ca5f2a2c8e3f5004b402e930f9f2d258 Mon Sep 17 00:00:00 2001
From: Martin Disch <martindisch@gmail.com>
Date: Sun, 27 May 2018 13:33:59 +0200
Subject: [PATCH] Implement bulk saving of playlists

---
 .../gramophone/util/PlaylistsUtil.java        | 20 +++++++++++++++++++
 app/src/main/res/values/strings.xml           |  2 ++
 2 files changed, 22 insertions(+)

diff --git a/app/src/main/java/com/kabouzeid/gramophone/util/PlaylistsUtil.java b/app/src/main/java/com/kabouzeid/gramophone/util/PlaylistsUtil.java
index 7f900cac..4b11434b 100644
--- a/app/src/main/java/com/kabouzeid/gramophone/util/PlaylistsUtil.java
+++ b/app/src/main/java/com/kabouzeid/gramophone/util/PlaylistsUtil.java
@@ -14,6 +14,7 @@ import android.widget.Toast;
 
 import com.kabouzeid.gramophone.R;
 import com.kabouzeid.gramophone.helper.M3UWriter;
+import com.kabouzeid.gramophone.loader.PlaylistLoader;
 import com.kabouzeid.gramophone.model.Playlist;
 import com.kabouzeid.gramophone.model.PlaylistSong;
 import com.kabouzeid.gramophone.model.Song;
@@ -248,6 +249,25 @@ public class PlaylistsUtil {
         return M3UWriter.write(context, new File(Environment.getExternalStorageDirectory(), "Playlists"), playlist);
     }
 
+    public static String saveAllPlaylists(Context context) {
+        int successes = 0, failures = 0;
+        File dir = new File(Environment.getExternalStorageDirectory(), "Playlists");
+
+        List<Playlist> playlists = PlaylistLoader.getAllPlaylists(context);
+        for (Playlist playlist : playlists) {
+            try {
+                savePlaylist(context, playlist);
+                successes++;
+            } catch (IOException ignored) {
+                failures++;
+            }
+        }
+
+        return failures == 0
+                ? String.format(context.getString(R.string.saved_x_playlists_to_x), successes, dir)
+                : String.format(context.getString(R.string.saved_x_playlists_to_x_failed_to_save_x), successes, dir, failures);
+    }
+
     private static boolean doesPlaylistExist(@NonNull Context context, @NonNull final String selection, @NonNull final String[] values) {
         Cursor cursor = context.getContentResolver().query(EXTERNAL_CONTENT_URI,
                 new String[]{}, selection, values, null);
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 972e064c..d4cb2627 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -234,6 +234,8 @@
     <string name="folders">Folders</string>
     <string name="saved_playlist_to">Saved playlist to %s.</string>
     <string name="failed_to_save_playlist">Failed to save playlist (%s).</string>
+    <string name="saved_x_playlists_to_x">Saved %1$d playlists to %2$s.</string>
+    <string name="saved_x_playlists_to_x_failed_to_save_x">Saved %1$d playlists to %2$s, failed to save %3$d.</string>
     <string name="not_listed_in_media_store"><![CDATA[<b>%s</b> is not listed in the media store.]]></string>
     <string name="some_files_are_not_listed_in_the_media_store">Some files are not listed in the media store.</string>
     <string name="nothing_to_scan">Nothing to scan.</string>