[gnome-games/wip/exalm/cache2: 24/25] grilo: Provide default values

[Alexander Mikhaylenko <alexm src gnome org>]

commit b65d81ca864c2823cf775ccacb3a6d227cf29698
Author: Alexander Mikhaylenko <exalm7659 gmail com>
Date:   Sat Oct 6 21:36:00 2018 +0500

    grilo: Provide default values
    
    Provide default non-null values for loaded, but missing metadata fields.
    This allows to differentiate them for values that haven't been loaded yet.
    
    Fixes #115

 src/grilo/grilo-cooperative.vala  | 12 +++---------
 src/grilo/grilo-description.vala  | 12 +++---------
 src/grilo/grilo-developer.vala    | 10 ++--------
 src/grilo/grilo-genre.vala        | 14 ++------------
 src/grilo/grilo-players.vala      | 22 ++++++++--------------
 src/grilo/grilo-publisher.vala    | 12 +++---------
 src/grilo/grilo-rating.vala       | 12 +++---------
 src/grilo/grilo-release-date.vala | 12 +++---------
 8 files changed, 27 insertions(+), 79 deletions(-)
---
diff --git a/src/grilo/grilo-cooperative.vala b/src/grilo/grilo-cooperative.vala
index ca792e71..808c78f4 100644
--- a/src/grilo/grilo-cooperative.vala
+++ b/src/grilo/grilo-cooperative.vala
@@ -11,6 +11,7 @@ public class Games.GriloCooperative : Object, Cooperative {
                this.media = media;
                media.resolved.connect (on_media_resolved);
                resolving = false;
+               cooperative = false;
        }
 
        public bool get_cooperative () {
@@ -32,15 +33,8 @@ public class Games.GriloCooperative : Object, Cooperative {
                var registry = Grl.Registry.get_default ();
                var metadata_key = registry.lookup_metadata_key ("coop");
 
-               if (grl_media.length (metadata_key) == 0)
-                       return;
-
-               var coop = grl_media.get_boolean (metadata_key);
-               load_media_cooperative (coop);
-       }
-
-       private void load_media_cooperative (bool coop) {
-               cooperative = coop;
+               if (grl_media.length (metadata_key) != 0)
+                       cooperative = grl_media.get_boolean (metadata_key);
 
                has_loaded = true;
        }
diff --git a/src/grilo/grilo-description.vala b/src/grilo/grilo-description.vala
index 61081500..87ccdfe3 100644
--- a/src/grilo/grilo-description.vala
+++ b/src/grilo/grilo-description.vala
@@ -11,6 +11,7 @@ public class Games.GriloDescription : Object, Description {
                this.media = media;
                media.resolved.connect (on_media_resolved);
                resolving = false;
+               description = "";
        }
 
        public string get_description () {
@@ -32,15 +33,8 @@ public class Games.GriloDescription : Object, Description {
                if (grl_media == null)
                        return;
 
-               if (grl_media.length (Grl.MetadataKey.DESCRIPTION) == 0)
-                       return;
-
-               var description_string = grl_media.get_description ();
-               load_media_description (description_string);
-       }
-
-       private void load_media_description (string description_string) {
-               description = description_string;
+               if (grl_media.length (Grl.MetadataKey.DESCRIPTION) != 0)
+                       description = grl_media.get_description ();
 
                has_loaded = true;
        }
diff --git a/src/grilo/grilo-developer.vala b/src/grilo/grilo-developer.vala
index 7412fe77..83118b76 100644
--- a/src/grilo/grilo-developer.vala
+++ b/src/grilo/grilo-developer.vala
@@ -32,15 +32,9 @@ public class Games.GriloDeveloper : Object, Developer {
                var registry = Grl.Registry.get_default ();
                var metadata_key = registry.lookup_metadata_key ("developer");
 
-               if (grl_media.length (metadata_key) == 0)
-                       return;
-
-               var developer_string = grl_media.get_string (metadata_key);
-               load_media_developer (developer_string);
-       }
+               if (grl_media.length (metadata_key) != 0)
+                       developer = grl_media.get_string (metadata_key);
 
-       private void load_media_developer (string developer_string) {
-               developer = developer_string;
                has_loaded = true;
        }
 }
diff --git a/src/grilo/grilo-genre.vala b/src/grilo/grilo-genre.vala
index 0894e11c..da3a7925 100644
--- a/src/grilo/grilo-genre.vala
+++ b/src/grilo/grilo-genre.vala
@@ -11,6 +11,7 @@ public class Games.GriloGenre : Object, Genre {
                this.media = media;
                media.resolved.connect (on_media_resolved);
                resolving = false;
+               genre = new List<string> ();
        }
 
        public unowned List<string> get_genre () {
@@ -34,19 +35,8 @@ public class Games.GriloGenre : Object, Genre {
 
                var genre_count = grl_media.length (Grl.MetadataKey.GENRE);
 
-               if (genre_count == 0)
-                       return;
-
-               var genre_list = new List<string> ();
-
                for (uint index = 0; index < genre_count; index++)
-                       genre_list.append (grl_media.get_genre_nth (index));
-
-               load_media_genre (genre_list);
-       }
-
-       private void load_media_genre (List<string> genre_list) {
-               genre = genre_list.copy ();
+                       genre.append (grl_media.get_genre_nth (index));
 
                has_loaded = true;
        }
diff --git a/src/grilo/grilo-players.vala b/src/grilo/grilo-players.vala
index dd9b33e8..864546a7 100644
--- a/src/grilo/grilo-players.vala
+++ b/src/grilo/grilo-players.vala
@@ -11,6 +11,7 @@ public class Games.GriloPlayers : Object, Players {
                this.media = media;
                media.resolved.connect (on_media_resolved);
                resolving = false;
+               players = "";
        }
 
        public string get_players () {
@@ -35,21 +36,14 @@ public class Games.GriloPlayers : Object, Players {
                var registry = Grl.Registry.get_default ();
                var metadata_key = registry.lookup_metadata_key ("players");
 
-               if (grl_media.length (metadata_key) == 0)
-                       return;
-
-               var player = grl_media.get_string (metadata_key);
-
-               if (int.parse (player) == 1)
-                       player = _("Single-player");
-               else
-                       player = _("Multi-player");
-
-               load_media_players (player);
-       }
+               if (grl_media.length (metadata_key) != 0) {
+                       players = grl_media.get_string (metadata_key);
 
-       private void load_media_players (string player) {
-               players = player;
+                       if (int.parse (players) == 1)
+                               players = _("Single-player");
+                       else
+                               players = _("Multi-player");
+               }
 
                has_loaded = true;
        }
diff --git a/src/grilo/grilo-publisher.vala b/src/grilo/grilo-publisher.vala
index b0c8d175..fa656081 100644
--- a/src/grilo/grilo-publisher.vala
+++ b/src/grilo/grilo-publisher.vala
@@ -11,6 +11,7 @@ public class Games.GriloPublisher : Object, Publisher {
                this.media = media;
                media.resolved.connect (on_media_resolved);
                resolving = false;
+               publisher = "";
        }
 
        public string get_publisher () {
@@ -35,15 +36,8 @@ public class Games.GriloPublisher : Object, Publisher {
                var registry = Grl.Registry.get_default ();
                var metadata_key = registry.lookup_metadata_key ("publisher");
 
-               if (grl_media.length (metadata_key) == 0)
-                       return;
-
-               var publisher_string = grl_media.get_string (metadata_key);
-               load_media_publisher (publisher_string);
-       }
-
-       private void load_media_publisher (string publisher_string) {
-               publisher = publisher_string;
+               if (grl_media.length (metadata_key) != 0)
+                       publisher = grl_media.get_string (metadata_key);
 
                has_loaded = true;
        }
diff --git a/src/grilo/grilo-rating.vala b/src/grilo/grilo-rating.vala
index 8edc301c..4a6e18b1 100644
--- a/src/grilo/grilo-rating.vala
+++ b/src/grilo/grilo-rating.vala
@@ -11,6 +11,7 @@ public class Games.GriloRating : Object, Rating {
                this.media = media;
                media.resolved.connect (on_media_resolved);
                resolving = false;
+               rating = 0;
        }
 
        public float get_rating () {
@@ -28,15 +29,8 @@ public class Games.GriloRating : Object, Rating {
                if (grl_media == null)
                        return;
 
-               if (grl_media.length (Grl.MetadataKey.RATING) == 0)
-                       return;
-
-               var media_rating = grl_media.get_rating ();
-               load_media_rating (media_rating);
-       }
-
-       private void load_media_rating (float media_rating) {
-               rating = media_rating;
+               if (grl_media.length (Grl.MetadataKey.RATING) != 0)
+                       rating = grl_media.get_rating ();
 
                has_loaded = true;
        }
diff --git a/src/grilo/grilo-release-date.vala b/src/grilo/grilo-release-date.vala
index 4f03074d..30de60b8 100644
--- a/src/grilo/grilo-release-date.vala
+++ b/src/grilo/grilo-release-date.vala
@@ -11,6 +11,7 @@ public class Games.GriloReleaseDate : Object, ReleaseDate {
                this.media = media;
                media.resolved.connect (on_media_resolved);
                resolving = false;
+               release_date = null;
        }
 
        public DateTime get_release_date () {
@@ -32,15 +33,8 @@ public class Games.GriloReleaseDate : Object, ReleaseDate {
                if (grl_media == null)
                        return;
 
-               if (grl_media.length (Grl.MetadataKey.PUBLICATION_DATE) == 0)
-                       return;
-
-               var release = grl_media.get_publication_date ();
-               load_media_release_date (release);
-       }
-
-       private void load_media_release_date (DateTime release) {
-               release_date = release;
+               if (grl_media.length (Grl.MetadataKey.PUBLICATION_DATE) != 0)
+                       release_date = grl_media.get_publication_date ();
 
                has_loaded = true;
        }