fix(igdb): search only games a user can own and play

The search listed DLC and e-Reader levels, and the limit of
10 pushed the main games out. Keep main games, standalone
expansions, seasons, remakes, remasters, expanded games and
ports, and show 20 hits.

src/main/java/core_service/modules/igdb_adapter/service/IgdbApiService.java

@@ -49,7 +49,10 @@ public class IgdbApiService {
      */
     public record Game(long igdbId, String name, Integer year, String imageUrl, List<String> platforms, Long steamAppid) {}
 
-    private static final int SEARCH_LIMIT = 10;
+    private static final int SEARCH_LIMIT = 20;
+    // IGDB game types a user can own and play on their own: main game, standalone expansion, season, remake,
+    // remaster, expanded game, port. Leaves out DLC, bundles, mods, episodes, packs and updates.
+    private static final String PLAYABLE_GAME_TYPES = "(0,4,7,8,9,10,11)";
     private static final String GAME_FIELDS = "fields name,first_release_date,cover.image_id,artworks.image_id,"
             + "screenshots.image_id,platforms.name,platforms.abbreviation,external_games.external_game_source,"
             + "external_games.uid;";
@@ -118,7 +121,7 @@ public class IgdbApiService {
         }
         try {
             IgdbResponses.Game[] games = query("/games", "search \"" + searchText(query) + "\"; " + GAME_FIELDS
-                    + " where version_parent = null; limit " + SEARCH_LIMIT + ";", IgdbResponses.Game[].class);
+                    + " where version_parent = null & game_type = " + PLAYABLE_GAME_TYPES + "; limit " + SEARCH_LIMIT + ";", IgdbResponses.Game[].class);
             return Optional.of(Arrays.stream(games).map(IgdbApiService::toGame).flatMap(Optional::stream).toList());
         } catch (Exception e) {
             log.error("Error searching IGDB games", e);

src/test/java/core_service/modules/igdb_adapter/service/IgdbApiServiceTest.java

@@ -194,7 +194,7 @@ class IgdbApiServiceTest extends AbstractUnitTest {
         expectToken();
         igdb.expect(requestTo(containsString("/games")))
                 .andExpect(content().string(allOf(containsString("search \"zelda\";"), containsString("version_parent = null"),
-                        containsString("limit 10"))))
+                        containsString("game_type = (0,4,7,8,9,10,11)"), containsString("limit 20"))))
                 .andRespond(withSuccess(ZELDA, MediaType.APPLICATION_JSON));
 
         List<IgdbApiService.Game> games = service.searchGames(" zelda ").orElseThrow();