fix(frontend): scroll to bottom on channel entry

feat: shorten invite links

backend/src/main/java/com/openisle/controller/NotificationController.java

@@ -62,4 +62,14 @@ public class NotificationController {
     public void updatePref(@RequestBody NotificationPreferenceUpdateRequest req, Authentication auth) {
         notificationService.updatePreference(auth.getName(), req.getType(), req.isEnabled());
     }
+
+    @GetMapping("/email-prefs")
+    public List<NotificationPreferenceDto> emailPrefs(Authentication auth) {
+        return notificationService.listEmailPreferences(auth.getName());
+    }
+
+    @PostMapping("/email-prefs")
+    public void updateEmailPref(@RequestBody NotificationPreferenceUpdateRequest req, Authentication auth) {
+        notificationService.updateEmailPreference(auth.getName(), req.getType(), req.isEnabled());
+    }
 }

backend/src/main/java/com/openisle/model/InviteToken.java

@@ -14,6 +14,13 @@ public class InviteToken {
     @Id
     private String token;
 
+    /**
+     * Short token used in invite links. Existing records may have this field null
+     * and fall back to {@link #token} for backward compatibility.
+     */
+    @Column(unique = true)
+    private String shortToken;
+
     @ManyToOne
     private User inviter;
 

backend/src/main/java/com/openisle/model/User.java

@@ -74,6 +74,12 @@ public class User {
             NotificationType.USER_ACTIVITY
     );
 
+    @ElementCollection(targetClass = NotificationType.class)
+    @CollectionTable(name = "user_disabled_email_notification_types", joinColumns = @JoinColumn(name = "user_id"))
+    @Column(name = "notification_type")
+    @Enumerated(EnumType.STRING)
+    private Set<NotificationType> disabledEmailNotificationTypes = EnumSet.noneOf(NotificationType.class);
+
     @CreationTimestamp
     @Column(nullable = false, updatable = false,
             columnDefinition = "DATETIME(6) DEFAULT CURRENT_TIMESTAMP(6)")

backend/src/main/java/com/openisle/repository/InviteTokenRepository.java

@@ -9,4 +9,8 @@ import java.util.Optional;
 
 public interface InviteTokenRepository extends JpaRepository<InviteToken, String> {
     Optional<InviteToken> findByInviterAndCreatedDate(User inviter, LocalDate createdDate);
+
+    Optional<InviteToken> findByShortToken(String shortToken);
+
+    boolean existsByShortToken(String shortToken);
 }

backend/src/main/java/com/openisle/service/InviteService.java

@@ -30,33 +30,53 @@ public class InviteService {
         LocalDate today = LocalDate.now();
         Optional<InviteToken> existing = inviteTokenRepository.findByInviterAndCreatedDate(inviter, today);
         if (existing.isPresent()) {
-            return existing.get().getToken();
+            InviteToken inviteToken = existing.get();
+            return inviteToken.getShortToken() != null ? inviteToken.getShortToken() : inviteToken.getToken();
         }
+
         String token = jwtService.generateInviteToken(username);
+        String shortToken;
+        do {
+            shortToken = java.util.UUID.randomUUID().toString().replace("-", "").substring(0, 8);
+        } while (inviteTokenRepository.existsByShortToken(shortToken));
+
         InviteToken inviteToken = new InviteToken();
         inviteToken.setToken(token);
+        inviteToken.setShortToken(shortToken);
         inviteToken.setInviter(inviter);
         inviteToken.setCreatedDate(today);
         inviteToken.setUsageCount(0);
         inviteTokenRepository.save(inviteToken);
-        return token;
+        return shortToken;
     }
 
     public InviteValidateResult validate(String token) {
         if (token == null || token.isEmpty()) {
             return new InviteValidateResult(null, false);
         }
+
+        InviteToken invite = inviteTokenRepository.findById(token).orElse(null);
+        String realToken = token;
+        if (invite == null) {
+            invite = inviteTokenRepository.findByShortToken(token).orElse(null);
+            if (invite == null) {
+                return new InviteValidateResult(null, false);
+            }
+            realToken = invite.getToken();
+        }
+
         try {
-            jwtService.validateAndGetSubjectForInvite(token);
+            jwtService.validateAndGetSubjectForInvite(realToken);
         } catch (Exception e) {
             return new InviteValidateResult(null, false);
         }
-        InviteToken invite = inviteTokenRepository.findById(token).orElse(null);
+
-        return new InviteValidateResult(invite, invite != null && invite.getUsageCount() < 3);
+        return new InviteValidateResult(invite, invite.getUsageCount() < 3);
     }
 
     public void consume(String token, String newUserName) {
-        InviteToken invite = inviteTokenRepository.findById(token).orElseThrow();
+        InviteToken invite = inviteTokenRepository.findById(token)
+                .orElseGet(() -> inviteTokenRepository.findByShortToken(token).orElseThrow());
         invite.setUsageCount(invite.getUsageCount() + 1);
         inviteTokenRepository.save(invite);
         pointService.awardForInvite(invite.getInviter().getUsername(), newUserName);

backend/src/main/java/com/openisle/service/NotificationService.java

@@ -19,6 +19,7 @@ import java.util.regex.Pattern;
 import java.util.regex.Matcher;
 import java.util.Set;
 import java.util.HashSet;
+import java.util.EnumSet;
 
 import java.util.List;
 import java.util.ArrayList;
@@ -40,6 +41,12 @@ public class NotificationService {
 
     private static final Pattern MENTION_PATTERN = Pattern.compile("@\\[([^\\]]+)\\]");
 
+    private static final Set<NotificationType> EMAIL_TYPES = EnumSet.of(
+            NotificationType.COMMENT_REPLY,
+            NotificationType.LOTTERY_WIN,
+            NotificationType.LOTTERY_DRAW
+    );
+
     private String buildPayload(String body, String url) {
         // Ensure push notifications contain a link to the related resource so
         // that verifications can assert its presence and users can navigate
@@ -75,7 +82,8 @@ public class NotificationService {
         n = notificationRepository.save(n);
 
 //        Runnable asyncTask = () -> {
-            if (type == NotificationType.COMMENT_REPLY && user.getEmail() != null && post != null && comment != null) {
+            if (type == NotificationType.COMMENT_REPLY && user.getEmail() != null && post != null && comment != null
+                    && !user.getDisabledEmailNotificationTypes().contains(NotificationType.COMMENT_REPLY)) {
                 String url = String.format("%s/posts/%d#comment-%d", websiteUrl, post.getId(), comment.getId());
                 emailSender.sendEmail(user.getEmail(), "有人回复了你", url);
                 sendCustomPush(user, "有人回复了你", url);
@@ -187,6 +195,35 @@ public class NotificationService {
         userRepository.save(user);
     }
 
+    public List<NotificationPreferenceDto> listEmailPreferences(String username) {
+        User user = userRepository.findByUsername(username)
+                .orElseThrow(() -> new com.openisle.exception.NotFoundException("User not found"));
+        Set<NotificationType> disabled = user.getDisabledEmailNotificationTypes();
+        List<NotificationPreferenceDto> prefs = new ArrayList<>();
+        for (NotificationType nt : EMAIL_TYPES) {
+            NotificationPreferenceDto dto = new NotificationPreferenceDto();
+            dto.setType(nt);
+            dto.setEnabled(!disabled.contains(nt));
+            prefs.add(dto);
+        }
+        return prefs;
+    }
+
+    public void updateEmailPreference(String username, NotificationType type, boolean enabled) {
+        if (!EMAIL_TYPES.contains(type)) {
+            return;
+        }
+        User user = userRepository.findByUsername(username)
+                .orElseThrow(() -> new com.openisle.exception.NotFoundException("User not found"));
+        Set<NotificationType> disabled = user.getDisabledEmailNotificationTypes();
+        if (enabled) {
+            disabled.remove(type);
+        } else {
+            disabled.add(type);
+        }
+        userRepository.save(user);
+    }
+
     public List<Notification> listNotifications(String username, Boolean read, int page, int size) {
         User user = userRepository.findByUsername(username)
                 .orElseThrow(() -> new com.openisle.exception.NotFoundException("User not found"));

backend/src/main/java/com/openisle/service/PostService.java

@@ -374,14 +374,16 @@ public class PostService {
             lp.setWinners(winners);
             lotteryPostRepository.save(lp);
             for (User w : winners) {
-                if (w.getEmail() != null) {
+                if (w.getEmail() != null &&
+                        !w.getDisabledEmailNotificationTypes().contains(NotificationType.LOTTERY_WIN)) {
                     emailSender.sendEmail(w.getEmail(), "你中奖了", "恭喜你在抽奖贴 \"" + lp.getTitle() + "\" 中获奖");
                 }
                 notificationService.createNotification(w, NotificationType.LOTTERY_WIN, lp, null, null, lp.getAuthor(), null, null);
                 notificationService.sendCustomPush(w, "你中奖了", String.format("%s/posts/%d", websiteUrl, lp.getId()));
             }
             if (lp.getAuthor() != null) {
-                if (lp.getAuthor().getEmail() != null) {
+                if (lp.getAuthor().getEmail() != null &&
+                        !lp.getAuthor().getDisabledEmailNotificationTypes().contains(NotificationType.LOTTERY_DRAW)) {
                     emailSender.sendEmail(lp.getAuthor().getEmail(), "抽奖已开奖", "您的抽奖贴 \"" + lp.getTitle() + "\" 已开奖");
                 }
                 notificationService.createNotification(lp.getAuthor(), NotificationType.LOTTERY_DRAW, lp, null, null, null, null, null);

frontend_nuxt/pages/message-box/[id].vue

@@ -334,6 +334,9 @@ onMounted(async () => {
   if (currentUser.value) {
     await fetchMessages(0)
     await markConversationAsRead()
+    await nextTick()
+    // 初次进入频道时，平滑滚动到底部
+    scrollToBottomSmooth()
     const token = getToken()
     if (token && !isConnected.value) {
       connect(token)

frontend_nuxt/pages/message.vue

@@ -23,6 +23,18 @@
             </div>
           </div>
         </div>
+        <div class="message-control-container">
+          <div class="message-control-title">邮件通知设置</div>
+          <div class="message-control-item-container">
+            <div v-for="pref in emailPrefs" :key="pref.type" class="message-control-item">
+              <div class="message-control-item-label">{{ formatType(pref.type) }}</div>
+              <BaseSwitch
+                :model-value="pref.enabled"
+                @update:modelValue="(val) => toggleEmailPref(pref, val)"
+              />
+            </div>
+          </div>
+        </div>
       </div>
 
       <template v-else>
@@ -579,6 +591,8 @@ import {
   hasMore,
   fetchNotificationPreferences,
   updateNotificationPreference,
+  fetchEmailNotificationPreferences,
+  updateEmailNotificationPreference,
 } from '~/utils/notification'
 import TimeManager from '~/utils/time'
 import BaseSwitch from '~/components/BaseSwitch.vue'
@@ -595,6 +609,7 @@ const tabs = [
   { key: 'control', label: '消息设置' },
 ]
 const notificationPrefs = ref([])
+const emailPrefs = ref([])
 const page = ref(0)
 const pageSize = 30
 
@@ -619,6 +634,10 @@ const fetchPrefs = async () => {
   notificationPrefs.value = await fetchNotificationPreferences()
 }
 
+const fetchEmailPrefs = async () => {
+  emailPrefs.value = await fetchEmailNotificationPreferences()
+}
+
 const togglePref = async (pref, value) => {
   const ok = await updateNotificationPreference(pref.type, value)
   if (ok) {
@@ -634,6 +653,15 @@ const togglePref = async (pref, value) => {
   }
 }
 
+const toggleEmailPref = async (pref, value) => {
+  const ok = await updateEmailNotificationPreference(pref.type, value)
+  if (ok) {
+    pref.enabled = value
+  } else {
+    toast.error('操作失败')
+  }
+}
+
 const markRead = async (id) => {
   markNotificationRead(id)
   if (selectedTab.value === 'unread') {
@@ -729,6 +757,7 @@ onActivated(async () => {
   page.value = 0
   await fetchNotifications({ page: 0, size: pageSize, unread: selectedTab.value === 'unread' })
   fetchPrefs()
+  fetchEmailPrefs()
 })
 </script>
 

frontend_nuxt/utils/notification.js

@@ -116,6 +116,43 @@ export async function updateNotificationPreference(type, enabled) {
   }
 }
 
+export async function fetchEmailNotificationPreferences() {
+  try {
+    const config = useRuntimeConfig()
+    const API_BASE_URL = config.public.apiBaseUrl
+
+    const token = getToken()
+    if (!token) return []
+    const res = await fetch(`${API_BASE_URL}/api/notifications/email-prefs`, {
+      headers: { Authorization: `Bearer ${token}` },
+    })
+    if (!res.ok) return []
+    return await res.json()
+  } catch (e) {
+    return []
+  }
+}
+
+export async function updateEmailNotificationPreference(type, enabled) {
+  try {
+    const config = useRuntimeConfig()
+    const API_BASE_URL = config.public.apiBaseUrl
+    const token = getToken()
+    if (!token) return false
+    const res = await fetch(`${API_BASE_URL}/api/notifications/email-prefs`, {
+      method: 'POST',
+      headers: {
+        Authorization: `Bearer ${token}`,
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify({ type, enabled }),
+    })
+    return res.ok
+  } catch (e) {
+    return false
+  }
+}
+
 /**
  * 处理信息的高阶函数
  * @returns