[gnome-games/wip/exalm/db: 3/9] media-set: Serialize with GVariant

[Alexander Mikhaylenko <alexm src gnome org>]

commit e22c6b86cabd2b5e2ec97e431cb32aeb4428f618
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Mon Feb 10 19:29:22 2020 +0500

    media-set: Serialize with GVariant
    
    This will be used to store media sets in the database in a simple way.

 src/core/media-set/media-set.vala | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
---
diff --git a/src/core/media-set/media-set.vala b/src/core/media-set/media-set.vala
index cb86e401..139a103a 100644
--- a/src/core/media-set/media-set.vala
+++ b/src/core/media-set/media-set.vala
@@ -8,6 +8,21 @@ public class Games.MediaSet : Object {
 
        private Media[] medias;
 
+       public MediaSet.parse (Variant variant) {
+               assert (get_variant_type ().equal (variant.get_type ()));
+
+               var icon_child = variant.get_child_value (0);
+               var medias_child = variant.get_child_value (1);
+
+               icon_name = icon_child.get_string ();
+
+               medias = {};
+               for (int i = 0; i < medias_child.n_children (); i++) {
+                       var media = medias_child.get_child_value (i);
+                       medias += new Media.parse (media);
+               }
+       }
+
        public void add_media (Media media) {
                medias += media;
        }
@@ -31,4 +46,23 @@ public class Games.MediaSet : Object {
 
                return medias[index];
        }
+
+       public Variant serialize () {
+               Variant[] media_variants = {};
+               foreach_media (media => {
+                       media_variants += media.serialize ();
+               });
+
+               return new Variant.tuple ({
+                       new Variant.string (icon_name),
+                       new Variant.array (Media.get_variant_type (), media_variants)
+               });
+       }
+
+       public static VariantType get_variant_type () {
+               return new VariantType.tuple ({
+                       VariantType.STRING,
+                       new VariantType.array (Media.get_variant_type ())
+               });
+       }
 }