feat: add paginated notifications with infinite scroll

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

@@ -24,8 +24,10 @@ public class NotificationController {
 
     @GetMapping
     public List<NotificationDto> list(@RequestParam(value = "read", required = false) Boolean read,
+                                      @RequestParam(value = "page", defaultValue = "0") int page,
+                                      @RequestParam(value = "pageSize", defaultValue = "50") int pageSize,
                                       Authentication auth) {
-        return notificationService.listNotifications(auth.getName(), read).stream()
+        return notificationService.listNotifications(auth.getName(), read, page, pageSize).stream()
                 .map(notificationMapper::toDto)
                 .collect(Collectors.toList());
     }

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

@@ -5,6 +5,7 @@ import com.openisle.model.User;
 import com.openisle.model.Post;
 import com.openisle.model.Comment;
 import com.openisle.model.NotificationType;
+import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 import java.util.List;
@@ -13,6 +14,9 @@ import java.util.List;
 public interface NotificationRepository extends JpaRepository<Notification, Long> {
     List<Notification> findByUserOrderByCreatedAtDesc(User user);
     List<Notification> findByUserAndReadOrderByCreatedAtDesc(User user, boolean read);
+
+    List<Notification> findByUserOrderByCreatedAtDesc(User user, Pageable pageable);
+    List<Notification> findByUserAndReadOrderByCreatedAtDesc(User user, boolean read, Pageable pageable);
     long countByUserAndRead(User user, boolean read);
     List<Notification> findByPost(Post post);
     List<Notification> findByComment(Comment comment);

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

@@ -8,6 +8,8 @@ import com.openisle.repository.UserRepository;
 import lombok.RequiredArgsConstructor;
 import com.openisle.service.EmailSender;
 import org.springframework.beans.factory.annotation.Value;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import org.springframework.transaction.annotation.Transactional;
@@ -180,15 +182,16 @@ public class NotificationService {
         userRepository.save(user);
     }
 
-    public List<Notification> listNotifications(String username, Boolean read) {
+    public List<Notification> listNotifications(String username, Boolean read, int page, int pageSize) {
         User user = userRepository.findByUsername(username)
                 .orElseThrow(() -> new com.openisle.exception.NotFoundException("User not found"));
         Set<NotificationType> disabled = user.getDisabledNotificationTypes();
+        Pageable pageable = PageRequest.of(page, pageSize);
         List<Notification> list;
         if (read == null) {
-            list = notificationRepository.findByUserOrderByCreatedAtDesc(user);
+            list = notificationRepository.findByUserOrderByCreatedAtDesc(user, pageable);
         } else {
-            list = notificationRepository.findByUserAndReadOrderByCreatedAtDesc(user, read);
+            list = notificationRepository.findByUserAndReadOrderByCreatedAtDesc(user, read, pageable);
         }
         return list.stream().filter(n -> !disabled.contains(n.getType())).collect(Collectors.toList());
     }

frontend_nuxt/pages/message.vue

@@ -48,7 +48,7 @@
     </div>
 
     <template v-else>
-      <div v-if="isLoadingMessage" class="loading-message">
+      <div v-if="isLoadingMessage && filteredNotifications.length === 0" class="loading-message">
         <l-hatch size="28" stroke="4" speed="3.5" color="var(--primary-color)"></l-hatch>
       </div>
 
@@ -58,7 +58,7 @@
         icon="fas fa-inbox"
       />
 
-      <div class="timeline-container" v-if="filteredNotifications.length > 0">
+      <div v-else class="timeline-container">
         <BaseTimeline :items="filteredNotifications">
           <template #item="{ item }">
             <div class="notif-content" :class="{ read: item.read }">
@@ -505,13 +505,17 @@
             </div>
           </template>
         </BaseTimeline>
+        <div v-if="isLoadingMessage" class="loading-message">
+          <l-hatch size="28" stroke="4" speed="3.5" color="var(--primary-color)"></l-hatch>
+        </div>
       </div>
     </template>
   </div>
 </template>
 
 <script setup>
-import { computed, onMounted, ref } from 'vue'
+import { computed, onActivated, ref } from 'vue'
+import { useScrollLoadMore } from '~/utils/loadMore'
 import BasePlaceholder from '~/components/BasePlaceholder.vue'
 import BaseTimeline from '~/components/BaseTimeline.vue'
 import NotificationContainer from '~/components/NotificationContainer.vue'
@@ -525,6 +529,9 @@ import {
   markRead,
   notifications,
   markAllRead,
+  allLoaded,
+  fetchNotificationPreferences,
+  updateNotificationPreference,
 } from '~/utils/notification'
 import TimeManager from '~/utils/time'
 
@@ -547,7 +554,7 @@ const togglePref = async (pref) => {
   const ok = await updateNotificationPreference(pref.type, !pref.enabled)
   if (ok) {
     pref.enabled = !pref.enabled
-    await fetchNotifications()
+    await fetchNotifications(true)
     await fetchUnreadCount()
   } else {
     toast.error('操作失败')
@@ -627,8 +634,14 @@ const formatType = (t) => {
   }
 }
 
+const loadMore = async () => {
+  if (allLoaded.value) return
+  await fetchNotifications()
+}
+useScrollLoadMore(loadMore)
+
 onActivated(() => {
-  fetchNotifications()
+  fetchNotifications(true)
   fetchPrefs()
 })
 </script>

frontend_nuxt/utils/notification.js

@@ -118,175 +118,190 @@ export async function updateNotificationPreference(type, enabled) {
 function createFetchNotifications() {
   const notifications = ref([])
   const isLoadingMessage = ref(false)
-  const fetchNotifications = async () => {
+  const page = ref(0)
+  const pageSize = 50
+  const allLoaded = ref(false)
+  const fetchNotifications = async (reset = false) => {
     const config = useRuntimeConfig()
     const API_BASE_URL = config.public.apiBaseUrl
-    if (isLoadingMessage && notifications && markRead) {
-      try {
-        const token = getToken()
-        if (!token) {
-          toast.error('请先登录')
-          return
-        }
-        isLoadingMessage.value = true
+    if (isLoadingMessage.value || (allLoaded.value && !reset)) return
+    try {
+      const token = getToken()
+      if (!token) {
+        toast.error('请先登录')
+        return
+      }
+      if (reset) {
         notifications.value = []
-        const res = await fetch(`${API_BASE_URL}/api/notifications`, {
+        page.value = 0
+        allLoaded.value = false
+      }
+      isLoadingMessage.value = true
+      const res = await fetch(
+        `${API_BASE_URL}/api/notifications?page=${page.value}&pageSize=${pageSize}`,
+        {
           headers: {
             Authorization: `Bearer ${token}`,
           },
-        })
-        isLoadingMessage.value = false
-        if (!res.ok) {
-          toast.error('获取通知失败')
-          return
-        }
-        const data = await res.json()
-
-        for (const n of data) {
-          if (n.type === 'COMMENT_REPLY') {
-            notifications.value.push({
-              ...n,
-              src: n.comment.author.avatar,
-              iconClick: () => {
-                markRead(n.id)
-                navigateTo(`/users/${n.comment.author.id}`, { replace: true })
-              },
-            })
-          } else if (n.type === 'REACTION') {
-            notifications.value.push({
-              ...n,
-              emoji: reactionEmojiMap[n.reactionType],
-              iconClick: () => {
-                if (n.fromUser) {
-                  markRead(n.id)
-                  navigateTo(`/users/${n.fromUser.id}`, { replace: true })
-                }
-              },
-            })
-          } else if (n.type === 'POST_VIEWED') {
-            notifications.value.push({
-              ...n,
-              src: n.fromUser ? n.fromUser.avatar : null,
-              icon: n.fromUser ? undefined : iconMap[n.type],
-              iconClick: () => {
-                if (n.fromUser) {
-                  markRead(n.id)
-                  navigateTo(`/users/${n.fromUser.id}`, { replace: true })
-                }
-              },
-            })
-          } else if (n.type === 'LOTTERY_WIN') {
-            notifications.value.push({
-              ...n,
-              icon: iconMap[n.type],
-              iconClick: () => {
-                if (n.post) {
-                  markRead(n.id)
-                  router.push(`/posts/${n.post.id}`)
-                }
-              },
-            })
-          } else if (n.type === 'LOTTERY_DRAW') {
-            notifications.value.push({
-              ...n,
-              icon: iconMap[n.type],
-              iconClick: () => {
-                if (n.post) {
-                  markRead(n.id)
-                  router.push(`/posts/${n.post.id}`)
-                }
-              },
-            })
-          } else if (n.type === 'POST_UPDATED') {
-            notifications.value.push({
-              ...n,
-              src: n.comment.author.avatar,
-              iconClick: () => {
-                markRead(n.id)
-                navigateTo(`/users/${n.comment.author.id}`, { replace: true })
-              },
-            })
-          } else if (n.type === 'USER_ACTIVITY') {
-            notifications.value.push({
-              ...n,
-              src: n.comment.author.avatar,
-              iconClick: () => {
-                markRead(n.id)
-                navigateTo(`/users/${n.comment.author.id}`, { replace: true })
-              },
-            })
-          } else if (n.type === 'MENTION') {
-            notifications.value.push({
-              ...n,
-              icon: iconMap[n.type],
-              iconClick: () => {
-                if (n.fromUser) {
-                  markRead(n.id)
-                  navigateTo(`/users/${n.fromUser.id}`, { replace: true })
-                }
-              },
-            })
-          } else if (n.type === 'USER_FOLLOWED' || n.type === 'USER_UNFOLLOWED') {
-            notifications.value.push({
-              ...n,
-              icon: iconMap[n.type],
-              iconClick: () => {
-                if (n.fromUser) {
-                  markRead(n.id)
-                  navigateTo(`/users/${n.fromUser.id}`, { replace: true })
-                }
-              },
-            })
-          } else if (n.type === 'FOLLOWED_POST') {
-            notifications.value.push({
-              ...n,
-              icon: iconMap[n.type],
-              iconClick: () => {
-                if (n.post) {
-                  markRead(n.id)
-                  navigateTo(`/posts/${n.post.id}`, { replace: true })
-                }
-              },
-            })
-          } else if (n.type === 'POST_SUBSCRIBED' || n.type === 'POST_UNSUBSCRIBED') {
-            notifications.value.push({
-              ...n,
-              icon: iconMap[n.type],
-              iconClick: () => {
-                if (n.post) {
-                  markRead(n.id)
-                  navigateTo(`/posts/${n.post.id}`, { replace: true })
-                }
-              },
-            })
-          } else if (n.type === 'POST_REVIEW_REQUEST') {
-            notifications.value.push({
-              ...n,
-              src: n.fromUser ? n.fromUser.avatar : null,
-              icon: n.fromUser ? undefined : iconMap[n.type],
-              iconClick: () => {
-                if (n.post) {
-                  markRead(n.id)
-                  navigateTo(`/posts/${n.post.id}`, { replace: true })
-                }
-              },
-            })
-          } else if (n.type === 'REGISTER_REQUEST') {
-            notifications.value.push({
-              ...n,
-              icon: iconMap[n.type],
-              iconClick: () => {},
-            })
-          } else {
-            notifications.value.push({
-              ...n,
-              icon: iconMap[n.type],
-            })
-          }
-        }
-      } catch (e) {
-        console.error(e)
+        },
+      )
+      isLoadingMessage.value = false
+      if (!res.ok) {
+        toast.error('获取通知失败')
+        return
       }
+      const data = await res.json()
+
+      for (const n of data) {
+        if (n.type === 'COMMENT_REPLY') {
+          notifications.value.push({
+            ...n,
+            src: n.comment.author.avatar,
+            iconClick: () => {
+              markRead(n.id)
+              navigateTo(`/users/${n.comment.author.id}`, { replace: true })
+            },
+          })
+        } else if (n.type === 'REACTION') {
+          notifications.value.push({
+            ...n,
+            emoji: reactionEmojiMap[n.reactionType],
+            iconClick: () => {
+              if (n.fromUser) {
+                markRead(n.id)
+                navigateTo(`/users/${n.fromUser.id}`, { replace: true })
+              }
+            },
+          })
+        } else if (n.type === 'POST_VIEWED') {
+          notifications.value.push({
+            ...n,
+            src: n.fromUser ? n.fromUser.avatar : null,
+            icon: n.fromUser ? undefined : iconMap[n.type],
+            iconClick: () => {
+              if (n.fromUser) {
+                markRead(n.id)
+                navigateTo(`/users/${n.fromUser.id}`, { replace: true })
+              }
+            },
+          })
+        } else if (n.type === 'LOTTERY_WIN') {
+          notifications.value.push({
+            ...n,
+            icon: iconMap[n.type],
+            iconClick: () => {
+              if (n.post) {
+                markRead(n.id)
+                router.push(`/posts/${n.post.id}`)
+              }
+            },
+          })
+        } else if (n.type === 'LOTTERY_DRAW') {
+          notifications.value.push({
+            ...n,
+            icon: iconMap[n.type],
+            iconClick: () => {
+              if (n.post) {
+                markRead(n.id)
+                router.push(`/posts/${n.post.id}`)
+              }
+            },
+          })
+        } else if (n.type === 'POST_UPDATED') {
+          notifications.value.push({
+            ...n,
+            src: n.comment.author.avatar,
+            iconClick: () => {
+              markRead(n.id)
+              navigateTo(`/users/${n.comment.author.id}`, { replace: true })
+            },
+          })
+        } else if (n.type === 'USER_ACTIVITY') {
+          notifications.value.push({
+            ...n,
+            src: n.comment.author.avatar,
+            iconClick: () => {
+              markRead(n.id)
+              navigateTo(`/users/${n.comment.author.id}`, { replace: true })
+            },
+          })
+        } else if (n.type === 'MENTION') {
+          notifications.value.push({
+            ...n,
+            icon: iconMap[n.type],
+            iconClick: () => {
+              if (n.fromUser) {
+                markRead(n.id)
+                navigateTo(`/users/${n.fromUser.id}`, { replace: true })
+              }
+            },
+          })
+        } else if (n.type === 'USER_FOLLOWED' || n.type === 'USER_UNFOLLOWED') {
+          notifications.value.push({
+            ...n,
+            icon: iconMap[n.type],
+            iconClick: () => {
+              if (n.fromUser) {
+                markRead(n.id)
+                navigateTo(`/users/${n.fromUser.id}`, { replace: true })
+              }
+            },
+          })
+        } else if (n.type === 'FOLLOWED_POST') {
+          notifications.value.push({
+            ...n,
+            icon: iconMap[n.type],
+            iconClick: () => {
+              if (n.post) {
+                markRead(n.id)
+                navigateTo(`/posts/${n.post.id}`, { replace: true })
+              }
+            },
+          })
+        } else if (n.type === 'POST_SUBSCRIBED' || n.type === 'POST_UNSUBSCRIBED') {
+          notifications.value.push({
+            ...n,
+            icon: iconMap[n.type],
+            iconClick: () => {
+              if (n.post) {
+                markRead(n.id)
+                navigateTo(`/posts/${n.post.id}`, { replace: true })
+              }
+            },
+          })
+        } else if (n.type === 'POST_REVIEW_REQUEST') {
+          notifications.value.push({
+            ...n,
+            src: n.fromUser ? n.fromUser.avatar : null,
+            icon: n.fromUser ? undefined : iconMap[n.type],
+            iconClick: () => {
+              if (n.post) {
+                markRead(n.id)
+                navigateTo(`/posts/${n.post.id}`, { replace: true })
+              }
+            },
+          })
+        } else if (n.type === 'REGISTER_REQUEST') {
+          notifications.value.push({
+            ...n,
+            icon: iconMap[n.type],
+            iconClick: () => {},
+          })
+        } else {
+          notifications.value.push({
+            ...n,
+            icon: iconMap[n.type],
+          })
+        }
+      }
+
+      if (data.length < pageSize) {
+        allLoaded.value = true
+      } else {
+        page.value++
+      }
+    } catch (e) {
+      console.error(e)
     }
   }
 
@@ -335,10 +350,16 @@ function createFetchNotifications() {
     markRead,
     notifications,
     isLoadingMessage,
-    markRead,
     markAllRead,
+    allLoaded,
   }
 }
 
-export const { fetchNotifications, markRead, notifications, isLoadingMessage, markAllRead } =
-  createFetchNotifications()
+export const {
+  fetchNotifications,
+  markRead,
+  notifications,
+  isLoadingMessage,
+  markAllRead,
+  allLoaded,
+} = createFetchNotifications()