feat(profile): let users share stat groups

Store the groups in user_settings.profile_stats and send them in the
profile ticket, so Core shows only these on the public profile.

src/main/java/auth_service/configuration/security/JwtService.java

@@ -77,12 +77,13 @@ public class JwtService implements TokenGenerator, ProfileTicketIssuer, PublicKe
     }
 
     @Override
-    public String generateProfileTicket(long userId) {
+    public String generateProfileTicket(long userId, List<String> profileStats) {
         return Jwts.builder()
                 .header().keyId(jwtConfig.getKid()).and()
                 .subject(PROFILE_TICKET_TYPE)
                 .claim(TYPE_CLAIM, PROFILE_TICKET_TYPE)
                 .claim("profileUserId", String.valueOf(userId))
+                .claim("profileStats", profileStats)
                 .issuedAt(new Date(System.currentTimeMillis()))
                 .expiration(new Date(System.currentTimeMillis() + PROFILE_TICKET_EXPIRATION_MS))
                 .signWith(privateKey, Jwts.SIG.EdDSA)

src/main/java/auth_service/modules/profile/model/PublicProfile.java

@@ -1,5 +1,6 @@
 package auth_service.modules.profile.model;
 
 import java.time.LocalDate;
+import java.util.List;
 
-public record PublicProfile(long userId, String displayName, LocalDate memberSince) {}
+public record PublicProfile(long userId, String displayName, LocalDate memberSince, List<String> profileStats) {}

src/main/java/auth_service/modules/profile/repo/PublicProfileRepository.java

@@ -4,6 +4,7 @@ import auth_service.modules.profile.model.PublicProfile;
 import org.springframework.jdbc.core.JdbcTemplate;
 import org.springframework.stereotype.Repository;
 
+import java.util.List;
 import java.util.Optional;
 
 @Repository
@@ -20,13 +21,14 @@ public class PublicProfileRepository {
      */
     public Optional<PublicProfile> findPublicByDisplayName(String displayName) {
         return jdbc.query("""
-                        SELECT u.id, u.display_name, u.registration_date
+                        SELECT u.id, u.display_name, u.registration_date, s.profile_stats
                           FROM users u JOIN user_settings s ON s.user_id = u.id
                          WHERE LOWER(u.display_name) = LOWER(?) AND u.enabled AND s.public_profile
                         """,
                 (rs, row) -> new PublicProfile(rs.getLong("id"), rs.getString("display_name"),
                         rs.getTimestamp("registration_date") != null
-                                ? rs.getTimestamp("registration_date").toLocalDateTime().toLocalDate() : null),
+                                ? rs.getTimestamp("registration_date").toLocalDateTime().toLocalDate() : null,
+                        List.of((String[]) rs.getArray("profile_stats").getArray())),
                 displayName).stream().findFirst();
     }
 }

src/main/java/auth_service/modules/profile/service/PublicProfileService.java

@@ -22,6 +22,6 @@ public class PublicProfileService {
      */
     public Optional<TicketedProfile> findPublicProfile(String displayName) {
         return publicProfileRepository.findPublicByDisplayName(displayName)
-                .map(profile -> new TicketedProfile(profile, profileTicketIssuer.generateProfileTicket(profile.userId())));
+                .map(profile -> new TicketedProfile(profile, profileTicketIssuer.generateProfileTicket(profile.userId(), profile.profileStats())));
     }
 }

src/main/java/auth_service/modules/user/api/UserController.java

@@ -2,6 +2,7 @@ package auth_service.modules.user.api;
 
 import auth_service.shared.security.UserPrincipal;
 import auth_service.modules.user.api.dto.request.AppearanceRequest;
+import auth_service.modules.user.api.dto.request.ProfileStatsRequest;
 import auth_service.modules.user.api.dto.request.UserSettingsRequest;
 import auth_service.modules.user.api.dto.response.UserProfileResponse;
 import auth_service.modules.user.api.mapper.ApiMapper;
@@ -45,6 +46,13 @@ public class UserController {
         return ResponseEntity.noContent().build();
     }
 
+    @PutMapping(value = "/settings/profile-stats", version = "1.0")
+    public ResponseEntity<Void> updateProfileStats(@AuthenticationPrincipal UserPrincipal principal,
+                                                   @Valid @RequestBody ProfileStatsRequest request) {
+        this.userService.updateProfileStats(principal.getIdAsLong(), request.groups());
+        return ResponseEntity.noContent().build();
+    }
+
     @PutMapping(value = "/settings/appearance", version = "1.0")
     public ResponseEntity<Void> updateAppearance(@AuthenticationPrincipal UserPrincipal principal,
                                                  @Valid @RequestBody AppearanceRequest request) {

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

@@ -0,0 +1,13 @@
+package auth_service.modules.user.api.dto.request;
+
+import jakarta.validation.constraints.NotNull;
+import jakarta.validation.constraints.Pattern;
+
+import java.util.List;
+
+/**
+ * @param groups the stat groups of Core the public profile shows; empty shows none
+ */
+public record ProfileStatsRequest(
+        @NotNull List<@NotNull @Pattern(regexp = "PILE|TOP_GAMES|TASTE|HABITS|FINISHED|TREND") String> groups) {
+}

src/main/java/auth_service/modules/user/api/dto/response/SettingsResponse.java

@@ -2,7 +2,9 @@ package auth_service.modules.user.api.dto.response;
 
 import lombok.Builder;
 
+import java.util.List;
+
 @Builder
 public record SettingsResponse(long id, boolean useDarkTheme, String language, boolean publicProfile,
-                               AppearanceResponse appearance) {
+                               AppearanceResponse appearance, List<String> profileStats) {
 }

src/main/java/auth_service/modules/user/api/mapper/ApiMapper.java

@@ -30,6 +30,7 @@ public abstract class ApiMapper {
                         .language(user.getSettings().getLanguage())
                         .publicProfile(user.getSettings().isPublicProfile())
                         .appearance(toApi(user.getSettings().getAppearance()))
+                        .profileStats(user.getSettings().getProfileStats())
                         .build())
                 .build();
     }

src/main/java/auth_service/modules/user/model/UserSettings.java

@@ -3,6 +3,8 @@ package auth_service.modules.user.model;
 import lombok.Builder;
 import lombok.Data;
 
+import java.util.List;
+
 @Data
 @Builder
 public class UserSettings {
@@ -11,4 +13,7 @@ public class UserSettings {
     private boolean publicProfile;
     @Builder.Default
     private Appearance appearance = Appearance.DEFAULT;
+    /** The stat groups of Core the public profile shows. */
+    @Builder.Default
+    private List<String> profileStats = List.of();
 }

src/main/java/auth_service/modules/user/persistence/UserRepository.java

@@ -8,6 +8,7 @@ import auth_service.modules.user.model.UserSettings;
 import jakarta.transaction.Transactional;
 import jakarta.validation.constraints.NotNull;
 
+import java.util.List;
 import java.util.Optional;
 
 /**
@@ -31,6 +32,8 @@ public interface UserRepository {
     @Transactional
     void updateAppearance(long userId, Appearance appearance);
 
+    void updateProfileStats(long userId, List<String> groups);
+
     Optional<SteamIdHolder> findSteamIdHolder(long steamId);
 
     /**

src/main/java/auth_service/modules/user/persistence/UserRepositoryImpl.java

@@ -15,6 +15,8 @@ import jakarta.transaction.Transactional;
 import jakarta.validation.constraints.NotNull;
 import org.springframework.stereotype.Repository;
 
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Optional;
 import java.util.UUID;
 
@@ -86,21 +88,7 @@ public class UserRepositoryImpl implements UserRepository {
     @Transactional
     @Override
     public void updateAppearance(long userId, Appearance appearance) {
-        var userEntity = entityManager.find(UserEntity.class, userId);
-        if (userEntity == null) {
-            throw new UserNotFoundException("Could not find user with id " + userId);
-        }
-
-        var settingsEntity = userEntity.getSettings();
-        if (settingsEntity == null) {
-            // Same values as the defaults of the user_settings columns.
-            settingsEntity = new UserSettingsEntity();
-            settingsEntity.setUserId(userId);
-            settingsEntity.setLanguage("");
-            settingsEntity.setTheme("light");
-            userEntity.setSettings(settingsEntity);
-        }
-
+        UserSettingsEntity settingsEntity = settingsOf(userId);
         settingsEntity.setAccent(appearance.accent());
         settingsEntity.setCorners(appearance.corners());
         settingsEntity.setWideLayout(appearance.wideLayout());
@@ -109,6 +97,31 @@ public class UserRepositoryImpl implements UserRepository {
         settingsEntity.setShowBanner(appearance.showBanner());
     }
 
+    @Transactional
+    @Override
+    public void updateProfileStats(long userId, List<String> groups) {
+        settingsOf(userId).setProfileStats(new ArrayList<>(groups));
+    }
+
+    /**
+     * The settings row of the user, created with the defaults of the user_settings columns when there is none.
+     */
+    private UserSettingsEntity settingsOf(long userId) {
+        UserEntity userEntity = entityManager.find(UserEntity.class, userId);
+        if (userEntity == null) {
+            throw new UserNotFoundException("Could not find user with id " + userId);
+        }
+        UserSettingsEntity settingsEntity = userEntity.getSettings();
+        if (settingsEntity == null) {
+            settingsEntity = new UserSettingsEntity();
+            settingsEntity.setUserId(userId);
+            settingsEntity.setLanguage("");
+            settingsEntity.setTheme("light");
+            userEntity.setSettings(settingsEntity);
+        }
+        return settingsEntity;
+    }
+
     @Override
     public Optional<SteamIdHolder> findSteamIdHolder(long steamId) {
         // A projection, not the entity: the bulk updates that follow would leave a loaded entity stale.

src/main/java/auth_service/modules/user/persistence/entities/UserSettingsEntity.java

@@ -7,6 +7,11 @@ import jakarta.persistence.Id;
 import jakarta.persistence.Table;
 import lombok.Getter;
 import lombok.Setter;
+import org.hibernate.annotations.JdbcTypeCode;
+import org.hibernate.type.SqlTypes;
+
+import java.util.ArrayList;
+import java.util.List;
 
 @Entity
 @Table(name = "user_settings")
@@ -46,4 +51,8 @@ public class UserSettingsEntity {
 
     @Column(name = "show_banner", nullable = false)
     private boolean showBanner = Appearance.DEFAULT.showBanner();
+
+    @JdbcTypeCode(SqlTypes.ARRAY)
+    @Column(name = "profile_stats", nullable = false)
+    private List<String> profileStats = new ArrayList<>();
 }

src/main/java/auth_service/modules/user/persistence/mapper/EntityMapper.java

@@ -6,6 +6,8 @@ import auth_service.modules.user.model.UserSettings;
 import auth_service.modules.user.persistence.entities.UserEntity;
 import auth_service.modules.user.persistence.entities.UserSettingsEntity;
 
+import java.util.List;
+
 public abstract class EntityMapper {
 
     private EntityMapper() {
@@ -26,6 +28,7 @@ public abstract class EntityMapper {
                     .appearance(new Appearance(entity.getSettings().getAccent(), entity.getSettings().getCorners(),
                             entity.getSettings().isWideLayout(), entity.getSettings().getBackgroundAppid(),
                             entity.getSettings().getBannerAppid(), entity.getSettings().isShowBanner()))
+                    .profileStats(List.copyOf(entity.getSettings().getProfileStats()))
                     .build();
         } else {
             // Fallback default settings for users without an entry in the database

src/main/java/auth_service/modules/user/service/UserService.java

@@ -16,6 +16,7 @@ import org.springframework.cache.annotation.Cacheable;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.util.List;
 import java.util.Optional;
 
 @Slf4j
@@ -87,4 +88,13 @@ public class UserService {
     public void updateAppearance(long userId, Appearance appearance) {
         userRepository.updateAppearance(userId, appearance);
     }
+
+    /**
+     * Stores each group once; the request may repeat one.
+     */
+    @Transactional
+    @CacheEvict(value = "usersByEmail", allEntries = true)
+    public void updateProfileStats(long userId, List<String> groups) {
+        userRepository.updateProfileStats(userId, groups.stream().distinct().toList());
+    }
 }

src/main/java/auth_service/shared/security/ProfileTicketIssuer.java

@@ -1,9 +1,14 @@
 package auth_service.shared.security;
 
+import java.util.List;
+
 /**
  * Port for the short-lived ticket that lets Core show the public profile data of one user. The ticket is signed
  * like a login token but is no login: the login filters of Auth and Core reject it.
  */
 public interface ProfileTicketIssuer {
-    String generateProfileTicket(long userId);
+    /**
+     * @param profileStats the stat groups of Core the profile shows
+     */
+    String generateProfileTicket(long userId, List<String> profileStats);
 }

src/main/resources/db/migration/V12__Add_Profile_Stats.sql

@@ -0,0 +1,3 @@
+-- The stat groups of Core's stats page the user shows on the public profile, e.g. {PILE,TREND}. Empty for everyone
+-- until they pick some.
+ALTER TABLE user_settings ADD COLUMN profile_stats VARCHAR(16)[] NOT NULL DEFAULT '{}';

src/test/java/auth_service/configuration/security/JwtServiceTest.java

@@ -3,6 +3,7 @@ package auth_service.configuration.security;
 import auth_service.shared.security.SessionProperties;
 import auth_service.shared.security.UserPrincipal;
 import auth_service.shared.test.AbstractUnitTest;
+import io.jsonwebtoken.Claims;
 import io.jsonwebtoken.Jwts;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -104,7 +105,7 @@ class JwtServiceTest extends AbstractUnitTest {
 
     @Test
     void generateProfileTicket_NamesTheUserAndExpiresSoon() {
-        var ticket = jwtService.generateProfileTicket(42L);
+        var ticket = jwtService.generateProfileTicket(42L, List.of());
 
         var claims = Jwts.parser().verifyWith(publicKey).build().parseSignedClaims(ticket).getPayload();
         assertEquals("public-profile", claims.get("typ", String.class));
@@ -114,9 +115,17 @@ class JwtServiceTest extends AbstractUnitTest {
         assertTrue(secondsLeft > 0 && secondsLeft <= 600, "expires in " + secondsLeft + "s");
     }
 
+    @Test
+    void generateProfileTicket_CarriesTheSharedStatGroups() {
+        String ticket = jwtService.generateProfileTicket(42L, List.of("PILE", "TREND"));
+
+        Claims claims = Jwts.parser().verifyWith(publicKey).build().parseSignedClaims(ticket).getPayload();
+        assertEquals(List.of("PILE", "TREND"), claims.get("profileStats", List.class));
+    }
+
     @Test
     void parseLoginToken_ProfileTicketIsNoLoginToken() {
-        assertEquals(Optional.empty(), jwtService.parseLoginToken(jwtService.generateProfileTicket(42L)));
+        assertEquals(Optional.empty(), jwtService.parseLoginToken(jwtService.generateProfileTicket(42L, List.of())));
     }
 
     @Test

src/test/java/auth_service/modules/profile/api/PublicProfileControllerTest.java

@@ -1,6 +1,7 @@
 package auth_service.modules.profile.api;
 
 import auth_service.shared.test.AbstractIntegrationTest;
+import io.jsonwebtoken.Claims;
 import io.jsonwebtoken.Jwts;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -13,8 +14,10 @@ import org.springframework.jdbc.core.JdbcTemplate;
 import org.springframework.test.web.servlet.MockMvc;
 
 import java.security.KeyFactory;
+import java.security.PublicKey;
 import java.security.spec.X509EncodedKeySpec;
 import java.util.Base64;
+import java.util.List;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertTrue;
@@ -66,6 +69,19 @@ class PublicProfileControllerTest extends AbstractIntegrationTest {
         var key = KeyFactory.getInstance("Ed25519").generatePublic(new X509EncodedKeySpec(Base64.getDecoder().decode(publicKey)));
         var claims = Jwts.parser().verifyWith(key).build().parseSignedClaims(ticket).getPayload();
         assertEquals(String.valueOf(publicUserId), claims.get("profileUserId", String.class));
+        assertEquals(List.of(), claims.get("profileStats", List.class));
+    }
+
+    @Test
+    void publicProfile_TicketCarriesTheSharedStatGroups() throws Exception {
+        jdbc.update("update user_settings set profile_stats = '{PILE,TREND}' where user_id = ?", publicUserId);
+
+        String body = mockMvc.perform(get("/api/public/profiles/Lobo")).andReturn().getResponse().getContentAsString();
+
+        String ticket = body.replaceAll(".*\"ticket\"\\s*:\\s*\"([^\"]+)\".*", "$1");
+        PublicKey key = KeyFactory.getInstance("Ed25519").generatePublic(new X509EncodedKeySpec(Base64.getDecoder().decode(publicKey)));
+        Claims claims = Jwts.parser().verifyWith(key).build().parseSignedClaims(ticket).getPayload();
+        assertEquals(List.of("PILE", "TREND"), claims.get("profileStats", List.class));
     }
 
     @Test

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

@@ -30,6 +30,7 @@ import org.springframework.test.context.bean.override.mockito.MockitoBean;
 import org.springframework.test.web.servlet.MockMvc;
 
 import java.util.Collections;
+import java.util.List;
 
 import static org.mockito.ArgumentMatchers.*;
 import static org.mockito.Mockito.doThrow;
@@ -347,6 +348,48 @@ class UserControllerTest extends AbstractWebMvcTest {
                 .andExpect(jsonPath("$.settings.appearance.showBanner").value(true));
     }
 
+    @Test
+    void getCurrentUserV1_ShowsTheSharedStatGroups() throws Exception {
+        String email = "test@example.com";
+        UserSettings settings = UserSettings.builder().language("en").theme("dark")
+                .profileStats(List.of("PILE", "TREND")).build();
+        SecurityContextHolder.getContext().setAuthentication(
+                new UsernamePasswordAuthenticationToken(new UserPrincipal("1", email, null), null, Collections.emptyList())
+        );
+        when(userService.getUserByEmail(email)).thenReturn(User.builder().email(email).settings(settings).build());
+
+        mockMvc.perform(get("/api/users/me").accept(MediaType.APPLICATION_JSON))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.settings.profileStats[0]").value("PILE"))
+                .andExpect(jsonPath("$.settings.profileStats[1]").value("TREND"));
+    }
+
+    @Test
+    void updateProfileStats_StoresTheGroups() throws Exception {
+        SecurityContextHolder.getContext().setAuthentication(new UsernamePasswordAuthenticationToken(
+                new UserPrincipal("1", "test@example.com", null), null, Collections.emptyList()));
+
+        mockMvc.perform(put("/api/users/settings/profile-stats")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content("{\"groups\":[\"PILE\",\"TREND\"]}"))
+                .andExpect(status().isNoContent());
+
+        verify(userService).updateProfileStats(1L, List.of("PILE", "TREND"));
+    }
+
+    // OVERVIEW is public anyway, so it is no choice.
+    @ParameterizedTest
+    @ValueSource(strings = {"{}", "{\"groups\":[\"OVERVIEW\"]}", "{\"groups\":[\"MONEY\"]}", "{\"groups\":[null]}"})
+    void updateProfileStats_UnknownOrMissingGroups_Is400(String body) throws Exception {
+        SecurityContextHolder.getContext().setAuthentication(new UsernamePasswordAuthenticationToken(
+                new UserPrincipal("1", "test@example.com", null), null, Collections.emptyList()));
+
+        mockMvc.perform(put("/api/users/settings/profile-stats")
+                        .contentType(MediaType.APPLICATION_JSON)
+                        .content(body))
+                .andExpect(status().isBadRequest());
+    }
+
     @Test
     void updateAppearance_StoresTheValues() throws Exception {
         SecurityContextHolder.getContext().setAuthentication(new UsernamePasswordAuthenticationToken(

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

@@ -12,6 +12,7 @@ import org.springframework.boot.jpa.test.autoconfigure.TestEntityManager;
 import org.springframework.context.annotation.Import;
 
 import java.time.LocalDateTime;
+import java.util.List;
 import java.util.Optional;
 
 import static org.junit.jupiter.api.Assertions.*;
@@ -253,6 +254,29 @@ class UserRepositoryTest extends AbstractPersistenceTest {
                 .getSettings().getAppearance());
     }
 
+    @Test
+    void updateProfileStats_IsReadBackAndKeptByUpdateSettings() {
+        UserEntity userEntity = entityManager.persist(UserEntity.builder()
+                .email("stats@example.com")
+                .password("password")
+                .enabled(true)
+                .registrationDate(LocalDateTime.now())
+                .build());
+        entityManager.flush();
+        assertEquals(List.of(), userRepository.findByEmail("stats@example.com").orElseThrow()
+                .getSettings().getProfileStats());
+
+        userRepository.updateProfileStats(userEntity.getId(), List.of("PILE", "TREND"));
+        entityManager.flush();
+        userRepository.updateSettings(userEntity.getId(), null,
+                UserSettings.builder().language("de").theme("dark").build());
+        entityManager.flush();
+        entityManager.clear();
+
+        assertEquals(List.of("PILE", "TREND"), userRepository.findByEmail("stats@example.com").orElseThrow()
+                .getSettings().getProfileStats());
+    }
+
     @Test
     void updateAppearance_UnknownUser() {
         assertThrows(UserNotFoundException.class, () -> userRepository.updateAppearance(-1L, Appearance.DEFAULT));

src/test/java/auth_service/modules/user/service/UserServiceTest.java

@@ -15,6 +15,7 @@ import org.mockito.InOrder;
 import org.mockito.InjectMocks;
 import org.mockito.Mock;
 
+import java.util.List;
 import java.util.Optional;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
@@ -61,6 +62,13 @@ class UserServiceTest extends AbstractUnitTest {
         assertThrows(UserNotFoundException.class, () -> userService.getUserByEmail(email));
     }
 
+    @Test
+    void updateProfileStats_StoresEachGroupOnce() {
+        userService.updateProfileStats(1L, List.of("PILE", "TREND", "PILE"));
+
+        verify(userRepository).updateProfileStats(1L, List.of("PILE", "TREND"));
+    }
+
     @Test
     void updateUserSettings_NeverTouchesTheSteamIdAndIssuesNoToken() {
         var userSettings = UserSettings.builder().language("en").build();