refactor: 하이라이트 객체를 매핑하는 객체 분리

backend/src/main/java/reviewme/highlight/service/mapper/HighlightMapper.java

@@ -0,0 +1,61 @@
+package reviewme.highlight.service.mapper;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.stream.Collectors;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+import reviewme.highlight.domain.Highlight;
+import reviewme.highlight.domain.HighlightLine;
+import reviewme.highlight.domain.HighlightLines;
+import reviewme.highlight.domain.HighlightRange;
+import reviewme.highlight.service.dto.HighlightIndexRangeRequest;
+import reviewme.highlight.service.dto.HighlightRequest;
+import reviewme.highlight.service.dto.HighlightedLineRequest;
+import reviewme.highlight.service.dto.HighlightsRequest;
+import reviewme.review.domain.Answer;
+import reviewme.review.domain.TextAnswer;
+
+@Component
+@RequiredArgsConstructor
+public class HighlightMapper {
+
+    public List<Highlight> mapToHighlights(HighlightsRequest highlightsRequest, List<TextAnswer> textAnswers) {
+        Map<Long, HighlightLines> answerHighlightLines = textAnswers.stream()
+                .collect(Collectors.toMap(Answer::getId, answer -> new HighlightLines(answer.getContent())));
+
+        for (HighlightRequest highlightRequest : highlightsRequest.highlights()) {
+            HighlightLines highlightLines = answerHighlightLines.get(highlightRequest.answerId());
+            addLine(highlightRequest, highlightLines);
+        }
+
+        List<Highlight> highlights = new ArrayList<>();
+        for (Entry<Long, HighlightLines> answerHighlightLine : answerHighlightLines.entrySet()) {
+            addHighlight(answerHighlightLine, highlights);
+        }
+        return highlights;
+    }
+
+    private void addLine(HighlightRequest highlightRequest, HighlightLines highlightLines) {
+        for (HighlightedLineRequest lineRequest : highlightRequest.lines()) {
+            int lineIndex = lineRequest.index();
+            for (HighlightIndexRangeRequest rangeRequest : lineRequest.ranges()) {
+                highlightLines.addRange(lineIndex, rangeRequest.startIndex(), rangeRequest.endIndex());
+            }
+        }
+    }
+
+    private void addHighlight(Entry<Long, HighlightLines> answerHighlightLine, List<Highlight> highlights) {
+        long answerId = answerHighlightLine.getKey();
+        HighlightLines highlightLines = answerHighlightLine.getValue();
+
+        for (HighlightLine line : highlightLines.getLines()) {
+            for (HighlightRange range : line.getRanges()) {
+                Highlight highlight = new Highlight(answerId, line.getLineIndex(), range);
+                highlights.add(highlight);
+            }
+        }
+    }
+}

backend/src/test/java/reviewme/highlight/service/mapper/HighlightMapperTest.java

@@ -0,0 +1,93 @@
+package reviewme.highlight.service.mapper;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.jupiter.api.Assertions.assertAll;
+import static reviewme.fixture.SectionFixture.항상_보이는_섹션;
+import static reviewme.fixture.TemplateFixture.템플릿;
+
+import java.util.List;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import reviewme.fixture.QuestionFixture;
+import reviewme.fixture.ReviewGroupFixture;
+import reviewme.highlight.domain.Highlight;
+import reviewme.highlight.domain.HighlightRange;
+import reviewme.highlight.repository.HighlightRepository;
+import reviewme.highlight.service.dto.HighlightIndexRangeRequest;
+import reviewme.highlight.service.dto.HighlightRequest;
+import reviewme.highlight.service.dto.HighlightedLineRequest;
+import reviewme.highlight.service.dto.HighlightsRequest;
+import reviewme.question.repository.QuestionRepository;
+import reviewme.review.domain.Review;
+import reviewme.review.domain.TextAnswer;
+import reviewme.review.repository.ReviewRepository;
+import reviewme.reviewgroup.repository.ReviewGroupRepository;
+import reviewme.support.ServiceTest;
+import reviewme.template.repository.SectionRepository;
+import reviewme.template.repository.TemplateRepository;
+
+@ServiceTest
+class HighlightMapperTest {
+
+    @Autowired
+    HighlightMapper highlightMapper;
+
+    @Autowired
+    private HighlightRepository highlightRepository;
+
+    @Autowired
+    private ReviewGroupRepository reviewGroupRepository;
+
+    @Autowired
+    private ReviewRepository reviewRepository;
+
+    @Autowired
+    private QuestionRepository questionRepository;
+
+    @Autowired
+    private SectionRepository sectionRepository;
+
+    @Autowired
+    private TemplateRepository templateRepository;
+
+    @Test
+    void 하이라이트_요청과_기존_서술형_답변으로_하이라이트를_매핑한다() {
+        // given
+        long questionId = questionRepository.save(QuestionFixture.서술형_필수_질문()).getId();
+        long sectionId = sectionRepository.save(항상_보이는_섹션(List.of(questionId))).getId();
+        long templateId = templateRepository.save(템플릿(List.of(sectionId))).getId();
+        String reviewRequestCode = "reviewRequestCode";
+        long reviewGroupId = reviewGroupRepository.save(ReviewGroupFixture.리뷰_그룹(reviewRequestCode, "groupAccessCode"))
+                .getId();
+
+        TextAnswer textAnswer1 = new TextAnswer(questionId, "text answer1");
+        TextAnswer textAnswer2 = new TextAnswer(questionId, "text answer2");
+        Review review = reviewRepository.save(new Review(templateId, reviewGroupId, List.of(textAnswer1, textAnswer2)));
+
+        highlightRepository.save(new Highlight(1, 1, new HighlightRange(1, 1)));
+
+        int startIndex = 2;
+        int endIndex = 2;
+        int lineIndex = 0;
+        HighlightIndexRangeRequest rangeRequest = new HighlightIndexRangeRequest(startIndex, endIndex);
+        HighlightedLineRequest lineRequest1 = new HighlightedLineRequest(lineIndex, List.of(rangeRequest));
+        HighlightedLineRequest lineRequest2 = new HighlightedLineRequest(lineIndex, List.of(rangeRequest));
+        HighlightRequest highlightRequest1 = new HighlightRequest(textAnswer1.getId(), List.of(lineRequest1));
+        HighlightRequest highlightRequest2 = new HighlightRequest(textAnswer2.getId(), List.of(lineRequest2));
+        HighlightsRequest highlightsRequest = new HighlightsRequest(questionId,
+                List.of(highlightRequest1, highlightRequest2));
+
+        // when
+        List<Highlight> highlights = highlightMapper.mapToHighlights(highlightsRequest,
+                List.of(textAnswer1, textAnswer2));
+
+        // then
+        HighlightRange range = new HighlightRange(startIndex, endIndex);
+        assertAll(
+                () -> assertThat(highlights.get(0).getAnswerId()).isEqualTo(textAnswer1.getId()),
+                () -> assertThat(highlights.get(1).getAnswerId()).isEqualTo(textAnswer2.getId()),
+                () -> assertThat(highlights.get(0).getHighlightRange()).isEqualTo(range),
+                () -> assertThat(highlights.get(1).getHighlightRange()).isEqualTo(range)
+        );
+    }
+}