feat: 미션 최종 순위 조회 API 구현 (#39)

* feat: 미션 최종 순위 조회 API 구현 * feat: 동일한 인증 횟수인 경우 동일 순위로 지정
Nexters · Aug 9, 2024 · 7895c21 · 7895c21
1 parent 6d69468
commit 7895c21
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Showing 8 changed files with 184 additions and 4 deletions.
diff --git a/src/main/java/com/nexters/goalpanzi/application/mission/MissionMemberService.java b/src/main/java/com/nexters/goalpanzi/application/mission/MissionMemberService.java
@@ -1,12 +1,14 @@
 package com.nexters.goalpanzi.application.mission;
 
+import com.nexters.goalpanzi.application.mission.dto.response.MemberRankResponse;
 import com.nexters.goalpanzi.application.mission.dto.response.MissionsResponse;
 import com.nexters.goalpanzi.domain.common.BaseEntity;
 import com.nexters.goalpanzi.domain.member.Member;
 import com.nexters.goalpanzi.domain.member.repository.MemberRepository;
 import com.nexters.goalpanzi.domain.mission.InvitationCode;
 import com.nexters.goalpanzi.domain.mission.Mission;
 import com.nexters.goalpanzi.domain.mission.MissionMember;
+import com.nexters.goalpanzi.domain.mission.MemberRanks;
 import com.nexters.goalpanzi.domain.mission.repository.MissionMemberRepository;
 import com.nexters.goalpanzi.domain.mission.repository.MissionRepository;
 import com.nexters.goalpanzi.exception.AlreadyExistsException;
@@ -30,11 +32,16 @@ public class MissionMemberService {
     @Transactional
     public void joinMission(final Long memberId, final InvitationCode invitationCode) {
         Member member = memberRepository.getMember(memberId);
-        Mission mission = getMission(invitationCode);
+        Mission mission = getMissionByCode(invitationCode);
         validateAlreadyJoin(member, mission);
         missionMemberRepository.save(MissionMember.join(member, mission));
     }
 
+    private Mission getMissionByCode(final InvitationCode invitationCode) {
+        return missionRepository.findByInvitationCode(invitationCode)
+                .orElseThrow(() -> new NotFoundException(ErrorCode.NOT_FOUND_MISSION, invitationCode.getCode()));
+    }
+
     private void validateAlreadyJoin(final Member member, final Mission mission) {
         missionMemberRepository.findByMemberIdAndMissionId(member.getId(), mission.getId())
                 .ifPresent(missionMember -> {
@@ -60,8 +67,12 @@ public void deleteAllByMissionId(final Long missionId) {
                 .forEach(BaseEntity::delete);
     }
 
-    private Mission getMission(final InvitationCode invitationCode) {
-        return missionRepository.findByInvitationCode(invitationCode)
-                .orElseThrow(() -> new NotFoundException(ErrorCode.NOT_FOUND_MISSION, invitationCode.getCode()));
+    public MemberRankResponse getMissionRank(final Long missionId, final Long memberId) {
+        Member member = memberRepository.getMember(memberId);
+        List<MissionMember> missionMembers = missionMemberRepository.findAllByMissionId(missionId);
+
+        MemberRanks memberRanks = MemberRanks.from(missionMembers);
+
+        return MemberRankResponse.from(memberRanks.getRankByMember(member));
     }
 }
diff --git a/src/main/java/com/nexters/goalpanzi/application/mission/dto/response/MemberRankResponse.java b/src/main/java/com/nexters/goalpanzi/application/mission/dto/response/MemberRankResponse.java
@@ -0,0 +1,16 @@
+package com.nexters.goalpanzi.application.mission.dto.response;
+
+import com.nexters.goalpanzi.domain.mission.MemberRank;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+public record MemberRankResponse(
+        @Schema(description = "미션 최종 순위")
+        Integer rank
+) {
+
+    public static MemberRankResponse from(final MemberRank memberRank) {
+        return new MemberRankResponse(
+                memberRank.rank()
+        );
+    }
+}
diff --git a/src/main/java/com/nexters/goalpanzi/domain/mission/MemberRank.java b/src/main/java/com/nexters/goalpanzi/domain/mission/MemberRank.java
@@ -0,0 +1,9 @@
+package com.nexters.goalpanzi.domain.mission;
+
+import com.nexters.goalpanzi.domain.member.Member;
+
+public record MemberRank(
+        Member member,
+        Integer rank
+) {
+}
diff --git a/src/main/java/com/nexters/goalpanzi/domain/mission/MemberRanks.java b/src/main/java/com/nexters/goalpanzi/domain/mission/MemberRanks.java
@@ -0,0 +1,68 @@
+package com.nexters.goalpanzi.domain.mission;
+
+import com.nexters.goalpanzi.domain.member.Member;
+import lombok.RequiredArgsConstructor;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.NoSuchElementException;
+import java.util.Objects;
+
+@RequiredArgsConstructor
+public class MemberRanks {
+
+    private final List<MemberRank> memberRanks;
+
+    public static MemberRanks from(final List<MissionMember> missionMembers) {
+        List<MissionMember> sortedMissionMembers = sortedMembersByVerificationCountDesc(missionMembers);
+
+        List<MemberRank> memberRanks = new ArrayList<>();
+        int rank = 1;
+        int previousVerificationCount = sortedMissionMembers.getFirst().getVerificationCount();
+
+        for (int i = 0; i < sortedMissionMembers.size(); i++) {
+            MissionMember missionMember = sortedMissionMembers.get(i);
+            if (missionMember.getVerificationCount() < previousVerificationCount) {
+                rank = i + 1;
+            }
+            memberRanks.add(new MemberRank(missionMember.getMember(), rank));
+            previousVerificationCount = missionMember.getVerificationCount();
+        }
+
+        return new MemberRanks(memberRanks);
+    }
+
+    private static List<MissionMember> sortedMembersByVerificationCountDesc(final List<MissionMember> missionMembers) {
+        return missionMembers
+                .stream()
+                .sorted((m1, m2) -> m2.getVerificationCount() - m1.getVerificationCount())
+                .toList();
+    }
+
+    public MemberRank getRankByMember(final Member member) {
+        return memberRanks.stream()
+                .filter(memberRank -> memberRank.member().equals(member))
+                .findFirst()
+                .orElseThrow(() -> new NoSuchElementException("No rank found for member " + member.getId()));
+    }
+
+    @Override
+    public boolean equals(final Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        MemberRanks memberRanks1 = (MemberRanks) o;
+        return Objects.equals(memberRanks, memberRanks1.memberRanks);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(memberRanks);
+    }
+
+    @Override
+    public String toString() {
+        return "Ranks{" +
+                "ranks=" + memberRanks +
+                '}';
+    }
+}
diff --git a/src/main/java/com/nexters/goalpanzi/presentation/mission/MissionMemberController.java b/src/main/java/com/nexters/goalpanzi/presentation/mission/MissionMemberController.java
@@ -1,6 +1,7 @@
 package com.nexters.goalpanzi.presentation.mission;
 
 import com.nexters.goalpanzi.application.mission.MissionMemberService;
+import com.nexters.goalpanzi.application.mission.dto.response.MemberRankResponse;
 import com.nexters.goalpanzi.application.mission.dto.response.MissionsResponse;
 import com.nexters.goalpanzi.common.argumentresolver.LoginMemberId;
 import com.nexters.goalpanzi.domain.mission.InvitationCode;
@@ -11,6 +12,7 @@
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 
 @RequiredArgsConstructor
@@ -35,4 +37,15 @@ public ResponseEntity<Void> joinMission(
 
         return ResponseEntity.ok().build();
     }
+
+    @Override
+    @GetMapping("/rank")
+    public ResponseEntity<MemberRankResponse> getMissionRank(
+            @RequestParam final Long missionId,
+            @LoginMemberId final Long memberId
+    ) {
+        MemberRankResponse response = missionMemberService.getMissionRank(missionId, memberId);
+
+        return ResponseEntity.ok(response);
+    }
 }
diff --git a/src/main/java/com/nexters/goalpanzi/presentation/mission/MissionMemberControllerDocs.java b/src/main/java/com/nexters/goalpanzi/presentation/mission/MissionMemberControllerDocs.java
@@ -1,5 +1,6 @@
 package com.nexters.goalpanzi.presentation.mission;
 
+import com.nexters.goalpanzi.application.mission.dto.response.MemberRankResponse;
 import com.nexters.goalpanzi.application.mission.dto.response.MissionsResponse;
 import com.nexters.goalpanzi.common.argumentresolver.LoginMemberId;
 import com.nexters.goalpanzi.presentation.mission.dto.JoinMissionRequest;
@@ -8,6 +9,7 @@
 import io.swagger.v3.oas.annotations.tags.Tag;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestParam;
 
 @Tag(name = "미션/회원")
 public interface MissionMemberControllerDocs {
@@ -20,4 +22,10 @@ ResponseEntity<Void> joinMission(
             @Parameter(hidden = true) @LoginMemberId final Long memberId,
             @RequestBody JoinMissionRequest request
     );
+
+    @Operation(summary = "내 미션 최종 순위 조회")
+    ResponseEntity<MemberRankResponse> getMissionRank(
+            @RequestParam final Long missionId,
+            @Parameter(hidden = true) @LoginMemberId final Long memberId
+    );
 }
diff --git a/src/test/java/com/nexters/goalpanzi/domain/mission/MemberRanksTest.java b/src/test/java/com/nexters/goalpanzi/domain/mission/MemberRanksTest.java
@@ -0,0 +1,37 @@
+package com.nexters.goalpanzi.domain.mission;
+
+import com.nexters.goalpanzi.domain.member.Member;
+import com.nexters.goalpanzi.domain.member.SocialType;
+import com.nexters.goalpanzi.fixture.MissionFixture;
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+
+import static com.nexters.goalpanzi.fixture.MemberFixture.*;
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.jupiter.api.Assertions.assertAll;
+
+class MemberRanksTest {
+
+    @Test
+    void 미션_최종_등수를_확인할_수_있다() {
+        // given
+        Member memberHost = Member.socialLogin(SOCIAL_ID, EMAIL_HOST, SocialType.APPLE);
+        Member memberA = Member.socialLogin(SOCIAL_ID, EMAIL_MEMBER_A, SocialType.APPLE);
+        Member memberB = Member.socialLogin(SOCIAL_ID, EMAIL_MEMBER_B, SocialType.GOOGLE);
+
+        List<MissionMember> missionMembers = List.of(
+                new MissionMember(memberHost, MissionFixture.create(), 10),
+                new MissionMember(memberA, MissionFixture.create(), 12),
+                new MissionMember(memberB, MissionFixture.create(), 14)
+        );
+
+        // when, then
+        MemberRanks actual = MemberRanks.from(missionMembers);
+        assertAll(
+                () -> assertThat(actual.getRankByMember(memberB).rank()).isEqualTo(1),
+                () -> assertThat(actual.getRankByMember(memberA).rank()).isEqualTo(2),
+                () -> assertThat(actual.getRankByMember(memberHost).rank()).isEqualTo(3)
+        );
+    }
+}
diff --git a/src/test/java/com/nexters/goalpanzi/fixture/MissionFixture.java b/src/test/java/com/nexters/goalpanzi/fixture/MissionFixture.java
@@ -1,16 +1,20 @@
 package com.nexters.goalpanzi.fixture;
 
 import com.nexters.goalpanzi.domain.mission.DayOfWeek;
+import com.nexters.goalpanzi.domain.mission.InvitationCode;
+import com.nexters.goalpanzi.domain.mission.Mission;
 import org.springframework.mock.web.MockMultipartFile;
 import org.springframework.web.multipart.MultipartFile;
 
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
+import java.time.LocalDateTime;
 import java.util.List;
 
 import static com.nexters.goalpanzi.domain.mission.DayOfWeek.*;
+import static com.nexters.goalpanzi.fixture.MemberFixture.MEMBER_ID;
 
 public class MissionFixture {
     public static final String DESCRIPTION = "운동하기";
@@ -20,6 +24,20 @@ public class MissionFixture {
     public static final MultipartFile IMAGE_FILE;
     public static final String UPLOADED_IMAGE_URL = "uploadedImageUrl";
 
+    public static Mission create() {
+        return new Mission(
+                MEMBER_ID,
+                DESCRIPTION,
+                InvitationCode.generate(),
+                LocalDateTime.now(),
+                LocalDateTime.now().plusDays(10),
+                "10:00",
+                "12:00",
+                List.of(MONDAY),
+                10
+        );
+    }
+
     static {
         try {
             File tempFile = File.createTempFile("미션 인증 이미지", ".jpg");