[gnome-games/wip/aplazas/781334-refactor-game-source: 29/37] pc-engine: Provide MIME types and URI game factories

[Adrien Plazas <aplazas src gnome org>]

commit 4860a2a53e210ff9d4d1580e23998463c1f32456
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Thu May 4 15:39:33 2017 +0200

    pc-engine: Provide MIME types and URI game factories
    
    Also stop providing a GameSource.
    
    This helps splitting the conerns of looking for game resources and
    building games from them.

 plugins/pc-engine/configure.ac              |    1 -
 plugins/pc-engine/src/pc-engine-plugin.vala |   51 ++++++++++++++++++---------
 2 files changed, 34 insertions(+), 18 deletions(-)
---
diff --git a/plugins/pc-engine/configure.ac b/plugins/pc-engine/configure.ac
index 6c49395..2a8c96e 100644
--- a/plugins/pc-engine/configure.ac
+++ b/plugins/pc-engine/configure.ac
@@ -3,7 +3,6 @@ PKG_CHECK_MODULES(PC_ENGINE_PLUGIN, [
        glib-2.0 >= $GLIB_MIN_VERSION
        gtk+-3.0
        retro-gtk-0.10
-       tracker-sparql-1.0
 ], [enable_pc_engine_plugin=yes], [enable_pc_engine_plugin=no])
 
 AM_CONDITIONAL(ENABLE_PC_ENGINE_PLUGIN, test x$enable_pc_engine_plugin != xno)
diff --git a/plugins/pc-engine/src/pc-engine-plugin.vala b/plugins/pc-engine/src/pc-engine-plugin.vala
index a3c2e50..c94e8a0 100644
--- a/plugins/pc-engine/src/pc-engine-plugin.vala
+++ b/plugins/pc-engine/src/pc-engine-plugin.vala
@@ -10,19 +10,23 @@ private class Games.PcEnginePlugin : Object, Plugin {
        private const string CD_MAGIC_VALUE = "PC Engine CD-ROM SYSTEM";
        private const string CD_PLATFORM = "TurboGrafxCD";
 
-       public GameSource? get_game_source () throws Error {
+       public string[] get_mime_types () {
+               return {
+                       MIME_TYPE,
+                       CUE_MIME_TYPE,
+               };
+       }
+
+       public UriGameFactory[] get_uri_game_factories () {
                var game_uri_adapter = new GenericSyncGameUriAdapter (game_for_uri);
-               var cd_game_uri_adapter = new GenericSyncGameUriAdapter (cd_game_for_uri);
                var factory = new GenericUriGameFactory (game_uri_adapter);
+               factory.add_mime_type (MIME_TYPE);
+
+               var cd_game_uri_adapter = new GenericSyncGameUriAdapter (cd_game_for_uri);
                var cd_factory = new GenericUriGameFactory (cd_game_uri_adapter);
-               var query = new MimeTypeTrackerQuery (MIME_TYPE, factory);
-               var cd_query = new MimeTypeTrackerQuery (CUE_MIME_TYPE, cd_factory);
-               var connection = Tracker.Sparql.Connection.@get ();
-               var source = new TrackerGameSource (connection);
-               source.add_query (query);
-               source.add_query (cd_query);
-
-               return source;
+               cd_factory.add_mime_type (CUE_MIME_TYPE);
+
+               return { factory, cd_factory };
        }
 
        private static Game game_for_uri (string uri) throws Error {
@@ -57,16 +61,29 @@ private class Games.PcEnginePlugin : Object, Plugin {
        }
 
        private static bool is_valid_disc (string uri) throws Error {
-               var cue_file = File.new_for_uri (uri);
-               var cue_sheet = new CueSheet (cue_file);
-               if (cue_sheet.tracks_number < 2)
-                       return false;
+               var file = File.new_for_uri (uri);
+               var file_info = file.query_info (FileAttribute.STANDARD_CONTENT_TYPE, 
FileQueryInfoFlags.NONE);
+               var mime_type = file_info.get_content_type ();
+
+               File bin_file;
+               switch (mime_type) {
+               case CUE_MIME_TYPE:
+                       var cue = new CueSheet (file);
+                       if (cue.tracks_number < 2)
+                               return false;
+
+                       var track = cue.get_track (1);
+                       if (!track.track_mode.is_mode1 ())
+                               return false;
+
+                       bin_file = track.file.file;
 
-               var track = cue_sheet.get_track (1);
-               if (!track.track_mode.is_mode1 ())
+                       break;
+               // TODO Add support for binary files.
+               default:
                        return false;
+               }
 
-               var bin_file = track.file.file;
                var path = bin_file.get_path ();
                var offsets = Grep.get_offsets (path, CD_MAGIC_VALUE);