feat: paginate tags across backend and ui

This commit is contained in:
Tim
2025-09-24 15:58:24 +08:00
parent 2b5f6f2208
commit 1eeabab41a
5 changed files with 281 additions and 45 deletions

View File

@@ -100,18 +100,31 @@ public class TagController {
)
public List<TagDto> list(
@RequestParam(value = "keyword", required = false) String keyword,
@RequestParam(value = "page", required = false) Integer page,
@RequestParam(value = "pageSize", required = false) Integer pageSize,
@RequestParam(value = "limit", required = false) Integer limit
) {
List<Tag> tags = tagService.searchTags(keyword);
List<Long> tagIds = tags.stream().map(Tag::getId).toList();
Map<Long, Long> postCntByTagIds = postService.countPostsByTagIds(tagIds);
if (postCntByTagIds == null) {
postCntByTagIds = java.util.Collections.emptyMap();
}
List<TagDto> dtos = tags
.stream()
.map(t -> tagMapper.toDto(t, postCntByTagIds.getOrDefault(t.getId(), 0L)))
.sorted((a, b) -> Long.compare(b.getCount(), a.getCount()))
.collect(Collectors.toList());
if (page != null && pageSize != null && page >= 0 && pageSize > 0) {
int fromIndex = page * pageSize;
if (fromIndex >= dtos.size()) {
return java.util.Collections.emptyList();
}
int toIndex = Math.min(fromIndex + pageSize, dtos.size());
return new java.util.ArrayList<>(dtos.subList(fromIndex, toIndex));
}
if (limit != null && limit > 0 && dtos.size() > limit) {
return dtos.subList(0, limit);
return new java.util.ArrayList<>(dtos.subList(0, limit));
}
return dtos;
}