Link party IDs to users in chat: added getPartyId query, updated EventUser with partyId field, and adjusted message filtering logic in ChatService.

backend/src/main/java/com/alttd/altitudeweb/controllers/event/EventController.java

@@ -1,10 +1,13 @@
 package com.alttd.altitudeweb.controllers.event;
 
 import com.alttd.altitudeweb.controllers.chat.ChatMessageMapper;
+import com.alttd.altitudeweb.database.Databases;
+import com.alttd.altitudeweb.database.chat.ChatLogMapper;
 import com.alttd.altitudeweb.model.PermissionClaimDto;
 import com.alttd.altitudeweb.services.chat.ChatService;
 import com.alttd.altitudeweb.services.chat.event_publisher.EventPublisher;
 import com.alttd.altitudeweb.services.chat.event_publisher.EventUser;
+import com.alttd.altitudeweb.setup.Connection;
 import jakarta.servlet.http.HttpServletResponse;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -21,7 +24,9 @@ import org.springframework.web.servlet.mvc.method.annotation.SseEmitter;
 import java.time.Duration;
 import java.time.Instant;
 import java.util.List;
+import java.util.Optional;
 import java.util.UUID;
+import java.util.concurrent.CompletableFuture;
 import java.util.stream.Collectors;
 
 @RequiredArgsConstructor
@@ -62,7 +67,29 @@ public class EventController {
                 .map(ChatMessageMapper::toJson)
                 .collect(Collectors.joining(",", "[", "]"));
 
-        return eventPublisher.subscribe(new EventUser(subject, authorities), json);
+        Integer partyId = getPartyId(subject);
+        return eventPublisher.subscribe(new EventUser(subject, authorities, partyId), json);
+    }
+
+    private Integer getPartyId(UUID subject) {
+        CompletableFuture<Integer> partyIdFuture = new CompletableFuture<>();
+
+        Connection.getConnection(Databases.CHAT)
+                .runQuery(sqlSession -> {
+                    log.debug("Loading party id for uuid {}", subject);
+                    try {
+                        Integer partyId = sqlSession.getMapper(ChatLogMapper.class)
+                                .getPartyId(subject.toString())
+                                .orElse(null);
+
+                        partyIdFuture.complete(partyId);
+                    } catch (Exception e) {
+                        log.error("Failed to load party id", e);
+                        partyIdFuture.complete(null);
+                    }
+                });
+
+        return partyIdFuture.join();
     }
 
     private static boolean doesNotHavePermission(List<String> authorities) {

backend/src/main/java/com/alttd/altitudeweb/services/chat/ChatService.java

@@ -7,6 +7,7 @@ import com.alttd.altitudeweb.database.Databases;
 import com.alttd.altitudeweb.database.chat.ChatLogMapper;
 import com.alttd.altitudeweb.model.PermissionClaimDto;
 import com.alttd.altitudeweb.services.chat.event_publisher.EventPublisher;
+import com.alttd.altitudeweb.services.chat.event_publisher.EventUser;
 import com.alttd.altitudeweb.setup.Connection;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -83,23 +84,58 @@ public class ChatService {
     }
 
     private void sendMessagesToListeners(List<ChatMessage> chatMessageList) {
-        String jsonMessageListIncludingBlocked = chatMessageList.stream()
+        Map<ChatMessage, String> jsonCache = new HashMap<>();
-                .map(ChatMessageMapper::toJson)
+        for (ChatMessage message : chatMessageList) {
-                .collect(Collectors.joining(",", "[", "]"));
+            jsonCache.put(message, ChatMessageMapper.toJson(message));
-        String jsonMessageList = chatMessageList.stream()
+        }
-                .filter(ChatMessage::isNotBlocked)
-                .filter(chatMessage -> Arrays.asList(allowedServers).contains(chatMessage.getServer()))
-                //TODO [Stijn] [2026-07-19]: Handle different channel types
-                .filter(chatMessage -> chatMessage.getType() == ChatMessageType.PUBLIC)
-                .map(ChatMessageMapper::toJson)
-                .collect(Collectors.joining(",", "[", "]"));
 
-        eventPublisher.sendToUsers("chat", (eventUser) -> {
+        eventPublisher.sendToUsers("chat", (eventUser) ->
-            if (eventUser.hasPermission(PermissionClaimDto.HEAD_MOD)) {
+                chatMessageList.stream()
-                return jsonMessageListIncludingBlocked;
+                        .filter(chatMessage -> shouldReceive(eventUser, chatMessage))
+                        .map(jsonCache::get)
+                        .collect(Collectors.joining(",", "[", "]"))
+        );
+    }
+
+    private boolean shouldReceive(EventUser eventUser, ChatMessage chatMessage) {
+        if (eventUser.hasPermission(PermissionClaimDto.HEAD_MOD)) {
+            return true;
+        }
+
+        if (!Arrays.asList(allowedServers).contains(chatMessage.getServer())) {
+            return false;
+        }
+
+        if (!chatMessage.isNotBlocked()) {
+            return false;
+        }
+
+        return switch (chatMessage.getType()) {
+            case PUBLIC, GLOBAL -> true;
+            case PARTY -> {
+                Integer partyId = eventUser.partyId();
+                if (partyId == null) {
+                    yield false;
+                }
+                yield chatMessage.getChannel().equals(String.valueOf(partyId));
             }
-            return jsonMessageList;
+            case MSG -> {
-        });
+                if (eventUser.uuid().equals(chatMessage.getUuid())) {
+                    yield true;
+                }
+                if (chatMessage.getReceiver() != null) {
+                    try {
+                        UUID receiverUuid = UUID.fromString(chatMessage.getReceiver());
+                        yield eventUser.uuid().equals(receiverUuid);
+                    } catch (IllegalArgumentException e) {
+                        yield false;
+                    }
+                }
+                yield false;
+            }
+            case GAC -> eventUser.hasPermission(PermissionClaimDto.MOD);
+            case CUSTOM -> false;
+        };
     }
 
     public List<ChatMessage> getMessagesSince(Instant instant) {

backend/src/main/java/com/alttd/altitudeweb/services/chat/event_publisher/EventUser.java

@@ -6,7 +6,7 @@ import java.util.List;
 import java.util.Objects;
 import java.util.UUID;
 
-public record EventUser(UUID uuid, List<String> authorities) {
+public record EventUser(UUID uuid, List<String> authorities, Integer partyId) {
 
     public boolean hasPermission(PermissionClaimDto permission) {
         return authorities.contains(permission.getValue());

backend/src/test/java/com/alttd/altitudeweb/services/chat/ChatServiceTest.java

@@ -0,0 +1,157 @@
+package com.alttd.altitudeweb.services.chat;
+
+import com.alttd.altitudeweb.controllers.chat.ChatMessage;
+import com.alttd.altitudeweb.controllers.chat.ChatMessageType;
+import com.alttd.altitudeweb.model.PermissionClaimDto;
+import com.alttd.altitudeweb.services.chat.event_publisher.EventPublisher;
+import com.alttd.altitudeweb.services.chat.event_publisher.EventUser;
+import com.alttd.altitudeweb.services.chat.event_publisher.MessageForUser;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.ArgumentCaptor;
+import org.springframework.test.util.ReflectionTestUtils;
+
+import java.time.Instant;
+import java.util.List;
+import java.util.UUID;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.*;
+
+class ChatServiceTest {
+
+    private ChatService chatService;
+    private EventPublisher eventPublisher;
+
+    @BeforeEach
+    void setUp() {
+        eventPublisher = mock(EventPublisher.class);
+        chatService = new ChatService(eventPublisher);
+        ReflectionTestUtils.setField(chatService, "allowedServers", new String[]{"server1"});
+    }
+
+    @Test
+    void testPublicMessageSentToEveryone() {
+        ChatMessage message = ChatMessage.builder()
+                .uuid(UUID.randomUUID())
+                .type(ChatMessageType.PUBLIC)
+                .server("server1")
+                .messageJson("hello")
+                .notBlocked(true)
+                .timestamp(Instant.now())
+                .build();
+
+        chatService.addChatMessage(List.of(message));
+
+        ArgumentCaptor<MessageForUser> captor = ArgumentCaptor.forClass(MessageForUser.class);
+        verify(eventPublisher).sendToUsers(anyString(), captor.capture());
+
+        MessageForUser messageForUser = captor.getValue();
+        EventUser user = new EventUser(UUID.randomUUID(), List.of());
+        String result = messageForUser.get(user);
+
+        assertTrue(result.contains("hello"));
+    }
+
+    @Test
+    void testGacMessageSentOnlyToStaff() {
+        ChatMessage message = ChatMessage.builder()
+                .uuid(UUID.randomUUID())
+                .type(ChatMessageType.GAC)
+                .server("server1")
+                .messageJson("staff chat")
+                .notBlocked(true)
+                .timestamp(Instant.now())
+                .build();
+
+        chatService.addChatMessage(List.of(message));
+
+        ArgumentCaptor<MessageForUser> captor = ArgumentCaptor.forClass(MessageForUser.class);
+        verify(eventPublisher).sendToUsers(anyString(), captor.capture());
+
+        MessageForUser messageForUser = captor.getValue();
+
+        EventUser regularUser = new EventUser(UUID.randomUUID(), List.of());
+        assertFalse(messageForUser.get(regularUser).contains("staff chat"), "Regular user should not see GAC message");
+
+        EventUser modUser = new EventUser(UUID.randomUUID(), List.of(PermissionClaimDto.MOD.getValue()));
+        assertTrue(messageForUser.get(modUser).contains("staff chat"), "MOD should see GAC message");
+    }
+
+    @Test
+    void testMsgMessageSentToSenderAndReceiver() {
+        UUID senderUuid = UUID.randomUUID();
+        UUID receiverUuid = UUID.randomUUID();
+        ChatMessage message = ChatMessage.builder()
+                .uuid(senderUuid)
+                .type(ChatMessageType.MSG)
+                .server("server1")
+                .receiver(receiverUuid.toString())
+                .messageJson("private message")
+                .notBlocked(true)
+                .timestamp(Instant.now())
+                .build();
+
+        chatService.addChatMessage(List.of(message));
+
+        ArgumentCaptor<MessageForUser> captor = ArgumentCaptor.forClass(MessageForUser.class);
+        verify(eventPublisher).sendToUsers(anyString(), captor.capture());
+
+        MessageForUser messageForUser = captor.getValue();
+
+        EventUser sender = new EventUser(senderUuid, List.of());
+        EventUser receiver = new EventUser(receiverUuid, List.of());
+        EventUser other = new EventUser(UUID.randomUUID(), List.of());
+
+        assertTrue(messageForUser.get(sender).contains("private message"), "Sender should see their own message");
+        assertTrue(messageForUser.get(receiver).contains("private message"), "Receiver should see the message");
+        assertFalse(messageForUser.get(other).contains("private message"), "Others should not see private message");
+    }
+
+    @Test
+    void testGlobalMessageSentToEveryone() {
+        ChatMessage message = ChatMessage.builder()
+                .uuid(UUID.randomUUID())
+                .type(ChatMessageType.GLOBAL)
+                .server("server1")
+                .messageJson("global hello")
+                .notBlocked(true)
+                .timestamp(Instant.now())
+                .build();
+
+        chatService.addChatMessage(List.of(message));
+
+        ArgumentCaptor<MessageForUser> captor = ArgumentCaptor.forClass(MessageForUser.class);
+        verify(eventPublisher).sendToUsers(anyString(), captor.capture());
+
+        MessageForUser messageForUser = captor.getValue();
+        EventUser user = new EventUser(UUID.randomUUID(), List.of());
+        assertTrue(messageForUser.get(user).contains("global hello"));
+    }
+
+    @Test
+    void testBlockedMessageOnlySentToHeadMod() {
+        ChatMessage message = ChatMessage.builder()
+                .uuid(UUID.randomUUID())
+                .type(ChatMessageType.PUBLIC)
+                .server("server1")
+                .messageJson("blocked message")
+                .notBlocked(false)
+                .timestamp(Instant.now())
+                .build();
+
+        chatService.addChatMessage(List.of(message));
+
+        ArgumentCaptor<MessageForUser> captor = ArgumentCaptor.forClass(MessageForUser.class);
+        verify(eventPublisher).sendToUsers(anyString(), captor.capture());
+
+        MessageForUser messageForUser = captor.getValue();
+        EventUser regularUser = new EventUser(UUID.randomUUID(), List.of());
+        EventUser headModUser = new EventUser(UUID.randomUUID(), List.of(PermissionClaimDto.HEAD_MOD.getValue()));
+
+        assertFalse(messageForUser.get(regularUser).contains("blocked message"));
+        assertTrue(messageForUser.get(headModUser).contains("blocked message"));
+    }
+}

database/src/main/java/com/alttd/altitudeweb/database/chat/ChatLogMapper.java

@@ -4,6 +4,7 @@ import org.apache.ibatis.annotations.Param;
 import org.apache.ibatis.annotations.Select;
 
 import java.util.List;
+import java.util.Optional;
 
 public interface ChatLogMapper {
 
@@ -15,4 +16,10 @@ public interface ChatLogMapper {
             """)
     List<ChatLogDao> getChatLogs(@Param("since") long since);
 
+    @Select("""
+            SELECT party_id FROM chat_users
+            WHERE uuid = #{uuid}
+            """)
+    Optional<Integer> getPartyId(@Param("uuid") String uuid);
+
 }