feat: auto select medals and make badges interactive

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

@@ -83,6 +83,17 @@ public class MedalService {
         seedUserMedal.setSelected(selected == MedalType.SEED);
         medals.add(seedUserMedal);
 
+        if (user != null && medals.stream().noneMatch(MedalDto::isSelected)) {
+            medals.stream()
+                    .filter(MedalDto::isCompleted)
+                    .findFirst()
+                    .ifPresent(m -> {
+                        m.setSelected(true);
+                        user.setDisplayMedal(m.getType());
+                        userRepository.save(user);
+                    });
+        }
+
         return medals;
     }
 

backend/src/test/java/com/openisle/service/MedalServiceTest.java

@@ -92,4 +92,24 @@ class MedalServiceTest {
         MedalService service = new MedalService(commentRepo, postRepo, userRepo);
         assertThrows(IllegalArgumentException.class, () -> service.selectMedal("user", MedalType.COMMENT));
     }
+
+    @Test
+    void autoSelectFirstCompletedMedal() {
+        CommentRepository commentRepo = mock(CommentRepository.class);
+        PostRepository postRepo = mock(PostRepository.class);
+        UserRepository userRepo = mock(UserRepository.class);
+
+        when(commentRepo.countByAuthor_Id(1L)).thenReturn(120L);
+        when(postRepo.countByAuthor_Id(1L)).thenReturn(0L);
+        User user = new User();
+        user.setId(1L);
+        user.setCreatedAt(LocalDateTime.of(2025, 9, 15, 0, 0));
+        when(userRepo.findById(1L)).thenReturn(Optional.of(user));
+
+        MedalService service = new MedalService(commentRepo, postRepo, userRepo);
+        List<MedalDto> medals = service.getMedals(1L);
+
+        assertEquals(MedalType.COMMENT, user.getDisplayMedal());
+        assertTrue(medals.stream().anyMatch(m -> m.getType() == MedalType.COMMENT && m.isSelected()));
+    }
 }

frontend_nuxt/components/CommentItem.vue

@@ -11,7 +11,11 @@
       <div class="common-info-content-header">
         <div class="info-content-header-left">
           <span class="user-name">{{ comment.userName }}</span>
-          <span v-if="comment.medal" class="medal-name">{{ getMedalTitle(comment.medal) }}</span>
+          <span
+            v-if="comment.medal"
+            class="medal-name"
+            @click="gotoProfileMedals(comment.userId)"
+          >{{ getMedalTitle(comment.medal) }}</span>
           <span v-if="level >= 2">
             <i class="fas fa-reply reply-icon"></i>
             <span class="user-name reply-user-name">{{ comment.parentUserName }}</span>
@@ -115,6 +119,10 @@ const CommentItem = {
       showEditor.value = !showEditor.value
     }
 
+    const gotoProfileMedals = (id) => {
+      router.push(`/users/${id}?tab=achievements`)
+    }
+
     // 合并所有子回复为一个扁平数组
     const flattenReplies = (list) => {
       let result = []
@@ -234,7 +242,7 @@ const CommentItem = {
         lightboxVisible.value = true
       }
     }
-    return { showReplies, toggleReplies, showEditor, toggleEditor, submitReply, copyCommentLink, renderMarkdown, isWaitingForReply, commentMenuItems, deleteComment, lightboxVisible, lightboxIndex, lightboxImgs, handleContentClick, loggedIn, replyCount, replyList, getMedalTitle }
+    return { showReplies, toggleReplies, showEditor, toggleEditor, gotoProfileMedals, submitReply, copyCommentLink, renderMarkdown, isWaitingForReply, commentMenuItems, deleteComment, lightboxVisible, lightboxIndex, lightboxImgs, handleContentClick, loggedIn, replyCount, replyList, getMedalTitle }
   }
 }
 
@@ -289,6 +297,7 @@ export default CommentItem
   font-size: 12px;
   margin-left: 4px;
   opacity: 0.6;
+  cursor: pointer;
 }
 
 @keyframes highlight {

frontend_nuxt/pages/posts/[id]/index.vue

@@ -43,7 +43,11 @@
           <div v-if="isMobile" class="info-content-header">
             <div class="user-name">
               {{ author.username }}
-              <span v-if="author.displayMedal" class="user-medal">{{ getMedalTitle(author.displayMedal) }}</span>
+              <span
+                v-if="author.displayMedal"
+                class="user-medal"
+                @click="gotoProfileMedals"
+              >{{ getMedalTitle(author.displayMedal) }}</span>
             </div>
             <div class="post-time">{{ postTime }}</div>
           </div>
@@ -53,7 +57,11 @@
           <div v-if="!isMobile" class="info-content-header">
             <div class="user-name">
               {{ author.username }}
-              <span v-if="author.displayMedal" class="user-medal">{{ getMedalTitle(author.displayMedal) }}</span>
+              <span
+                v-if="author.displayMedal"
+                class="user-medal"
+                @click="gotoProfileMedals"
+              >{{ getMedalTitle(author.displayMedal) }}</span>
             </div>
             <div class="post-time">{{ postTime }}</div>
           </div>
@@ -235,6 +243,7 @@ export default {
     const mapComment = (c, parentUserName = '', level = 0) => ({
       id: c.id,
       userName: c.author.username,
+      userId: c.author.id,
       medal: c.author.displayMedal,
       time: TimeManager.format(c.createdAt),
       avatar: c.author.avatar,
@@ -598,6 +607,10 @@ export default {
       router.push(`/users/${author.value.id}`)
     }
 
+    const gotoProfileMedals = () => {
+      router.push(`/users/${author.value.id}?tab=achievements`)
+    }
+
     await fetchPost()
 
     onMounted(async () => {
@@ -635,6 +648,7 @@ export default {
       isWaitingFetchingPost,
       isWaitingPostingComment,
       gotoProfile,
+      gotoProfileMedals,
       subscribed,
       loggedIn,
       isAuthor,
@@ -940,6 +954,7 @@ export default {
   font-size: 12px;
   margin-left: 4px;
   opacity: 0.6;
+  cursor: pointer;
 }
 
 .post-time {
@@ -1008,6 +1023,7 @@ export default {
 
   .user-medal {
     font-size: 12px;
+    cursor: pointer;
   }
 
   .post-time {