[gnome-music/wip/jfelder/modification-date: 27/27] Use publication date instead of creation date for songs

[Jean Felder <jfelder src gnome org>]

commit 350dabc9614423bade0ff1c806614d6803260b6f
Author: Jean Felder <jfelder src gnome org>
Date:   Wed Sep 2 13:01:46 2020 +0200

    Use publication date instead of creation date for songs
    
    The grilo tracker2 plugin maps the nie:contentCreated property (the
    date of a song) to the CREATION_DATE key.
    However, the CREATION_DATE key is supposed to be used to describe the
    creation of a media such as an image.
    
    In the tracker3 plugin, the nie:contentCreated property now also maps
    the PUBLICATION_DATE key (CREATION_DATE is kept for backward
    compatibility). Music can now use the PUBLICATION_DATE key instead of
    the CREATION_DATE one.

 gnomemusic/grilowrappers/grlsearchwrapper.py  |  2 +-
 gnomemusic/grilowrappers/grltrackerwrapper.py | 24 +++++++++++++-----------
 gnomemusic/utils.py                           |  4 ++--
 3 files changed, 16 insertions(+), 14 deletions(-)
---
diff --git a/gnomemusic/grilowrappers/grlsearchwrapper.py b/gnomemusic/grilowrappers/grlsearchwrapper.py
index 3910f065..5a90fa6f 100644
--- a/gnomemusic/grilowrappers/grlsearchwrapper.py
+++ b/gnomemusic/grilowrappers/grlsearchwrapper.py
@@ -42,12 +42,12 @@ class GrlSearchWrapper(GObject.GObject):
         Grl.METADATA_KEY_ALBUM_ARTIST,
         Grl.METADATA_KEY_ALBUM_DISC_NUMBER,
         Grl.METADATA_KEY_ARTIST,
-        Grl.METADATA_KEY_CREATION_DATE,
         Grl.METADATA_KEY_COMPOSER,
         Grl.METADATA_KEY_DURATION,
         Grl.METADATA_KEY_FAVOURITE,
         Grl.METADATA_KEY_ID,
         Grl.METADATA_KEY_PLAY_COUNT,
+        Grl.METADATA_KEY_PUBLICATION_DATE,
         Grl.METADATA_KEY_THUMBNAIL,
         Grl.METADATA_KEY_TITLE,
         Grl.METADATA_KEY_TRACK_NUMBER,
diff --git a/gnomemusic/grilowrappers/grltrackerwrapper.py b/gnomemusic/grilowrappers/grltrackerwrapper.py
index 92d65cb8..7bfd155f 100644
--- a/gnomemusic/grilowrappers/grltrackerwrapper.py
+++ b/gnomemusic/grilowrappers/grltrackerwrapper.py
@@ -55,8 +55,8 @@ class GrlTrackerWrapper(GObject.GObject):
         Grl.METADATA_KEY_ARTIST,
         Grl.METADATA_KEY_ALBUM_ARTIST,
         Grl.METADATA_KEY_COMPOSER,
-        Grl.METADATA_KEY_CREATION_DATE,
         Grl.METADATA_KEY_ID,
+        Grl.METADATA_KEY_PUBLICATION_DATE,
         Grl.METADATA_KEY_TITLE,
         Grl.METADATA_KEY_URL
     ]
@@ -219,7 +219,7 @@ class GrlTrackerWrapper(GObject.GObject):
         query = """
         SELECT
             ?type ?id ?title ?composer ?albumArtist
-            ?artist ?url ?creationDate
+            ?artist ?url ?publicationDate
         WHERE {
             SERVICE <dbus:%(miner_fs_busname)s> {
                 GRAPH tracker:Audio {
@@ -231,7 +231,8 @@ class GrlTrackerWrapper(GObject.GObject):
                         ?albumArtist
                         nmm:artistName(?artist) AS ?artist
                         nie:isStoredAs(?song) AS ?url
-                        YEAR(MAX(nie:contentCreated(?song))) AS ?creationDate
+                        YEAR(MAX(nie:contentCreated(?song)))
+                            AS ?publicationDate
                     WHERE {
                         ?album a nmm:MusicAlbum .
                         ?song a nmm:MusicPiece ;
@@ -565,7 +566,7 @@ class GrlTrackerWrapper(GObject.GObject):
         query = """
         SELECT
             ?type ?id ?title ?composer ?albumArtist
-            ?artist ?url ?creationDate
+            ?artist ?url ?publicationDate
         WHERE
         {
             SERVICE <dbus:%(miner_fs_busname)s> {
@@ -578,7 +579,8 @@ class GrlTrackerWrapper(GObject.GObject):
                         ?albumArtist
                         nmm:artistName(?artist) AS ?artist
                         nie:isStoredAs(?song) AS ?url
-                        YEAR(MAX(nie:contentCreated(?song))) AS ?creationDate
+                        YEAR(MAX(nie:contentCreated(?song)))
+                            AS ?publicationDate
                     WHERE
                     {
                         ?album a nmm:MusicAlbum .
@@ -592,7 +594,7 @@ class GrlTrackerWrapper(GObject.GObject):
                         %(location_filter)s
                     }
                     GROUP BY ?album
-                    ORDER BY ?title ?albumArtist ?artist ?creationDate
+                    ORDER BY ?title ?albumArtist ?artist ?publicationDate
                 }
             }
         }
@@ -684,7 +686,7 @@ class GrlTrackerWrapper(GObject.GObject):
 
         query = """
         SELECT
-            ?type ?id ?title ?creationDate
+            ?type ?id ?title ?publicationDate
         WHERE {
             SERVICE <dbus:%(miner_fs_busname)s> {
                 GRAPH tracker:Audio {
@@ -692,7 +694,7 @@ class GrlTrackerWrapper(GObject.GObject):
                         %(media_type)s AS ?type
                         ?album AS ?id
                         nie:title(?album) AS ?title
-                        nie:contentCreated(?song) AS ?creationDate
+                        nie:contentCreated(?song) AS ?publicationDate
                     WHERE {
                         ?album a nmm:MusicAlbum .
                         OPTIONAL { ?album  nmm:albumArtist ?album_artist . }
@@ -704,7 +706,7 @@ class GrlTrackerWrapper(GObject.GObject):
                         %(location_filter)s
                     }
                    GROUP BY ?album
-                   ORDER BY ?creationDate ?album
+                   ORDER BY ?publicationDate ?album
                 }
             }
         }
@@ -822,7 +824,7 @@ class GrlTrackerWrapper(GObject.GObject):
             ?type ?id ?url ?title
             ?artist ?album
             ?duration ?trackNumber ?albumDiscNumber
-            ?creationDate
+            ?publicationDate
             nie:usageCounter(?id) AS ?playCount
             ?tag AS ?favorite
         WHERE {
@@ -839,7 +841,7 @@ class GrlTrackerWrapper(GObject.GObject):
                         nmm:trackNumber(?song) AS ?trackNumber
                         nmm:setNumber(nmm:musicAlbumDisc(?song))
                             AS ?albumDiscNumber
-                        YEAR(?date) AS ?creationDate
+                        YEAR(?date) AS ?publicationDate
                     WHERE {
                         ?song a nmm:MusicPiece ;
                                 nmm:musicAlbum ?album .
diff --git a/gnomemusic/utils.py b/gnomemusic/utils.py
index 5be7e8ca..b244bf07 100644
--- a/gnomemusic/utils.py
+++ b/gnomemusic/utils.py
@@ -139,10 +139,10 @@ def get_media_year(item):
     """Returns the year when the media was created.
 
     :param Grl.Media item: A Grilo Media object
-    :return: The creation year or '----' if not defined
+    :return: The publication year or '----' if not defined
     :rtype: str
     """
-    date = item.get_creation_date()
+    date = item.get_publication_date()
 
     if not date:
         return "----"