[gnome-games/wip/exalm/steam] steam: Load new-style covers

[Alexander Mikhaylenko <alexm src gnome org>]

commit d9cc4c587f84542889c66c6f4ab4291d87f888a4
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Sat Nov 9 14:35:08 2019 +0500

    steam: Load new-style covers
    
    Steam supports 300x450/600x900 covers now. Try loading these first, then
    fall back to the previously used header images.

 plugins/steam/src/steam-cover.vala | 26 ++++++++++++++++++++++----
 1 file changed, 22 insertions(+), 4 deletions(-)
---
diff --git a/plugins/steam/src/steam-cover.vala b/plugins/steam/src/steam-cover.vala
index 517db2a8..bf1c277c 100644
--- a/plugins/steam/src/steam-cover.vala
+++ b/plugins/steam/src/steam-cover.vala
@@ -1,6 +1,12 @@
 // This file is part of GNOME Games. License: GPL-3.0+.
 
 public class Games.SteamCover : Object, Cover {
+       private string[] URIS = {
+               "http://cdn.akamai.steamstatic.com/steam/apps/%s/library_600x900_2x.jpg";,
+               "http://cdn.akamai.steamstatic.com/steam/apps/%s/library_600x900.jpg";,
+               "http://cdn.akamai.steamstatic.com/steam/apps/%s/header.jpg";
+       };
+
        private string game_id;
        private GLib.Icon icon;
        private bool resolving;
@@ -23,8 +29,7 @@ public class Games.SteamCover : Object, Cover {
 
                resolving = true;
 
-               var uri = @"http://cdn.akamai.steamstatic.com/steam/apps/$game_id/header.jpg";;
-               fetch_cover.begin (uri);
+               fetch_covers.begin ();
 
                return null;
        }
@@ -35,7 +40,14 @@ public class Games.SteamCover : Object, Cover {
                return @"$dir/steam-$game_id.jpg";
        }
 
-       private async void fetch_cover (string uri) {
+       private async void fetch_covers () {
+               foreach (var uri in URIS) {
+                       if (yield fetch_cover (uri.printf (game_id)))
+                               break;
+               }
+       }
+
+       private async bool fetch_cover (string uri) {
                var dir = Application.get_covers_dir ();
                Application.try_make_dir (dir);
 
@@ -43,21 +55,27 @@ public class Games.SteamCover : Object, Cover {
 
                var session = new Soup.Session ();
                var message = new Soup.Message ("GET", uri);
+               var success = false;
 
                session.queue_message (message, (sess, mess) => {
                        if (mess.status_code != Soup.Status.OK) {
                                debug ("Failed to load %s: %u %s.", uri, mess.status_code, 
mess.reason_phrase);
-
+                               fetch_cover.callback ();
                                return;
                        }
 
                        try {
                                FileUtils.set_data (cover_path, mess.response_body.data);
                                load_cover ();
+                               success = true;
                        } catch (Error e) {
                                warning (e.message);
                        }
+
+                       fetch_cover.callback ();
                });
+               yield;
+               return success;
        }
 
        private void load_cover () {