90 lines
3.2 KiB
Java
90 lines
3.2 KiB
Java
package io.spring.application;
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import io.spring.application.data.CommentData;
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import io.spring.core.user.User;
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import io.spring.infrastructure.mybatis.readservice.CommentReadService;
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import io.spring.infrastructure.mybatis.readservice.UserRelationshipQueryService;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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import java.util.Optional;
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import java.util.Set;
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import java.util.stream.Collectors;
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import org.springframework.stereotype.Service;
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@Service
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public class CommentQueryService {
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private CommentReadService commentReadService;
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private UserRelationshipQueryService userRelationshipQueryService;
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public CommentQueryService(
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CommentReadService commentReadService,
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UserRelationshipQueryService userRelationshipQueryService) {
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this.commentReadService = commentReadService;
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this.userRelationshipQueryService = userRelationshipQueryService;
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}
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public Optional<CommentData> findById(String id, User user) {
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CommentData commentData = commentReadService.findById(id);
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if (commentData == null) {
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return Optional.empty();
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} else {
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commentData
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.getProfileData()
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.setFollowing(
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userRelationshipQueryService.isUserFollowing(
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user.getId(), commentData.getProfileData().getId()));
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}
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return Optional.ofNullable(commentData);
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}
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public List<CommentData> findByArticleId(String articleId, User user) {
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List<CommentData> comments = commentReadService.findByArticleId(articleId);
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if (comments.size() > 0 && user != null) {
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Set<String> followingAuthors =
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userRelationshipQueryService.followingAuthors(
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user.getId(),
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comments.stream()
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.map(commentData -> commentData.getProfileData().getId())
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.collect(Collectors.toList()));
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comments.forEach(
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commentData -> {
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if (followingAuthors.contains(commentData.getProfileData().getId())) {
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commentData.getProfileData().setFollowing(true);
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}
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});
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}
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return comments;
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}
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public CursorPager<CommentData> findByArticleIdWithCursor(
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String articleId, User user, CursorPageParameter page) {
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List<CommentData> comments = commentReadService.findByArticleIdWithCursor(articleId, page);
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if (comments.isEmpty()) {
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return new CursorPager<>(new ArrayList<>(), page.getDirection(), false);
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}
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if (user != null) {
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Set<String> followingAuthors =
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userRelationshipQueryService.followingAuthors(
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user.getId(),
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comments.stream()
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.map(commentData -> commentData.getProfileData().getId())
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.collect(Collectors.toList()));
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comments.forEach(
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commentData -> {
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if (followingAuthors.contains(commentData.getProfileData().getId())) {
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commentData.getProfileData().setFollowing(true);
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}
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});
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}
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boolean hasExtra = comments.size() > page.getLimit();
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if (hasExtra) {
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comments.remove(page.getLimit());
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}
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if (!page.isNext()) {
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Collections.reverse(comments);
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}
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return new CursorPager<>(comments, page.getDirection(), hasExtra);
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}
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}
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