refactor(user): check only the shape of a tile id

Core and the Frontend skip ids they do not know; Core never shares the overview or the activity.

src/main/java/auth_service/modules/user/api/dto/request/DashboardTilesRequest.java

@@ -1,7 +1,6 @@
 package auth_service.modules.user.api.dto.request;
 
 import jakarta.validation.Valid;
-import jakarta.validation.constraints.AssertTrue;
 import jakarta.validation.constraints.NotNull;
 import jakarta.validation.constraints.Size;
 
@@ -11,12 +10,4 @@ import java.util.List;
  * @param tiles the shown tiles in their order; null resets to the default dashboard
  */
 public record DashboardTilesRequest(@Size(max = 20) List<@NotNull @Valid TileRequest> tiles) {
-
-    public static final String IDS = "GAME_COUNT|MOST_PLAYED|PLAYING|PILE_OF_SHAME|ACTIVITY|ACHIEVEMENTS|STATS_OVERVIEW|"
-            + ProfileTilesRequest.STAT_IDS;
-
-    @AssertTrue(message = "unknown tile id")
-    boolean isKnownIds() {
-        return TileRequest.knownIds(tiles, IDS);
-    }
 }

src/main/java/auth_service/modules/user/api/dto/request/ProfileTilesRequest.java

@@ -1,24 +1,13 @@
 package auth_service.modules.user.api.dto.request;
 
 import jakarta.validation.Valid;
-import jakarta.validation.constraints.AssertTrue;
 import jakarta.validation.constraints.NotNull;
 import jakarta.validation.constraints.Size;
 
 import java.util.List;
 
 /**
- * @param tiles the shown parts of the public profile in their order; the STATS_ tiles are the shared stat groups
+ * @param tiles the shown parts of the public profile in their order; the STATS_ tiles are Core's stat groups
  */
 public record ProfileTilesRequest(@NotNull @Size(max = 20) List<@NotNull @Valid TileRequest> tiles) {
-
-    /** The stat groups of Core's stats page, as tiles. */
-    public static final String STAT_IDS = "STATS_PILE|STATS_TREND|STATS_TOP_GAMES|STATS_TASTE|STATS_HABITS|STATS_FINISHED";
-
-    public static final String IDS = "SUMMARY|STATUS|PLAYING|FINISHED|" + STAT_IDS;
-
-    @AssertTrue(message = "unknown tile id")
-    boolean isKnownIds() {
-        return TileRequest.knownIds(tiles, IDS);
-    }
 }

src/main/java/auth_service/modules/user/api/dto/request/TileRequest.java

@@ -3,17 +3,10 @@ package auth_service.modules.user.api.dto.request;
 import jakarta.validation.constraints.NotNull;
 import jakarta.validation.constraints.Pattern;
 
-import java.util.List;
-
 /**
- * The id is checked by the layout request that holds the tile, with {@link #knownIds}.
+ * @param id any tile id of the Frontend; Core and the Frontend skip ids they do not know. At most 30 characters:
+ *           the column stores "ID:SIZE" in 32.
  */
-public record TileRequest(@NotNull String id, @NotNull @Pattern(regexp = "S|M|L") String size) {
-
-    /**
-     * @return true when every id matches; a missing list, tile or id is left to its own constraint
-     */
-    static boolean knownIds(List<TileRequest> tiles, String ids) {
-        return tiles == null || tiles.stream().allMatch(tile -> tile == null || tile.id() == null || tile.id().matches(ids));
-    }
+public record TileRequest(@NotNull @Pattern(regexp = "[A-Z_]{1,30}") String id,
+                          @NotNull @Pattern(regexp = "S|M|L") String size) {
 }

src/test/java/auth_service/modules/user/api/UserControllerTest.java

@@ -467,19 +467,32 @@ class UserControllerTest extends AbstractWebMvcTest {
         verify(userService).updateProfileTiles(1L, List.of(new Tile("STATS_PILE", "M")));
     }
 
-    // A dashboard tile is no profile tile and the other way round; activity and the game count stay private.
+    // Core and the Frontend know the tiles; Auth checks only the shape (Core keeps activity and the overview private).
+    @Test
+    void updateTiles_ANewTileIdIsPassedThrough() throws Exception {
+        SecurityContextHolder.getContext().setAuthentication(new UsernamePasswordAuthenticationToken(
+                new UserPrincipal("1", null), null, Collections.emptyList()));
+
+        mockMvc.perform(put("/api/users/settings/profile-tiles")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content("{\"tiles\":[{\"id\":\"STATS_NEW_GROUP\",\"size\":\"M\"}]}"))
+                .andExpect(status().isNoContent());
+
+        verify(userService).updateProfileTiles(1L, List.of(new Tile("STATS_NEW_GROUP", "M")));
+    }
+
     @ParameterizedTest
     @ValueSource(strings = {
-            "dashboard-tiles|{\"tiles\":[{\"id\":\"SUMMARY\",\"size\":\"M\"}]}",
+            "dashboard-tiles|{\"tiles\":[{\"id\":\"stats_pile\",\"size\":\"M\"}]}",
+            "dashboard-tiles|{\"tiles\":[{\"id\":\"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\",\"size\":\"M\"}]}",
             "dashboard-tiles|{\"tiles\":[{\"id\":\"PLAYING\",\"size\":\"XL\"}]}",
             "dashboard-tiles|{\"tiles\":[{\"id\":\"PLAYING\"}]}",
             "dashboard-tiles|{\"tiles\":[null]}",
-            "profile-tiles|{\"tiles\":[{\"id\":\"ACTIVITY\",\"size\":\"M\"}]}",
-            "profile-tiles|{\"tiles\":[{\"id\":\"STATS_OVERVIEW\",\"size\":\"M\"}]}",
+            "profile-tiles|{\"tiles\":[{\"id\":\"\",\"size\":\"M\"}]}",
             "profile-tiles|{\"tiles\":null}",
             "profile-tiles|{}"
     })
-    void updateTiles_UnknownIdBadSizeOrMissing_IsRejected(String pathAndBody) throws Exception {
+    void updateTiles_BadIdBadSizeOrMissing_IsRejected(String pathAndBody) throws Exception {
         SecurityContextHolder.getContext().setAuthentication(new UsernamePasswordAuthenticationToken(
                 new UserPrincipal("1", null), null, Collections.emptyList()));
         String[] parts = pathAndBody.split("\\|", 2);

src/test/java/auth_service/modules/user/persistence/UserRepositoryTest.java

@@ -357,6 +357,23 @@ class UserRepositoryTest extends AbstractPersistenceTest {
         assertNull(findByEmail("reset@example.com").orElseThrow().getSettings().getDashboardTiles());
     }
 
+    @Test
+    void updateTiles_TheLongestIdAuthAcceptsIsStored() {
+        UserEntity userEntity = persisted(UserEntity.builder()
+                .email("longtile@example.com")
+                .password("password")
+                .enabled(true)
+                .registrationDate(LocalDateTime.now())
+                .build());
+        List<Tile> profile = List.of(new Tile("STATS_" + "A".repeat(24), "M"));
+
+        userRepository.update(userEntity.getId(), user -> user.getSettings().setProfileTiles(profile));
+        entityManager.flush();
+        entityManager.clear();
+
+        assertEquals(profile, findByEmail("longtile@example.com").orElseThrow().getSettings().getProfileTiles());
+    }
+
     private void updateSettings(long userId, String displayName, UserSettings settings) {
         userRepository.update(userId, user -> {
             user.setDisplayName(displayName);