feat: 초대코드로 미션 조회 API 구현 (#37)

* feat: 초대코드로 미션 조회 API 구현

* 값객체 equals, hashcode 정의

src/main/java/com/nexters/goalpanzi/application/mission/MissionService.java

@@ -9,6 +9,7 @@
 import com.nexters.goalpanzi.domain.mission.repository.MissionRepository;
 import com.nexters.goalpanzi.exception.ErrorCode;
 import com.nexters.goalpanzi.exception.ForbiddenException;
+import com.nexters.goalpanzi.exception.NotFoundException;
 import lombok.RequiredArgsConstructor;
 import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.stereotype.Service;
@@ -63,6 +64,13 @@ public MissionDetailResponse getMission(final Long missionId) {
         return MissionDetailResponse.from(mission);
     }
 
+    public MissionDetailResponse getMissionByInvitationCode(final InvitationCode invitationCode) {
+        Mission mission = missionRepository.findByInvitationCode(invitationCode)
+                .orElseThrow(() -> new NotFoundException(ErrorCode.NOT_FOUND_MISSION, invitationCode));
+
+        return MissionDetailResponse.from(mission);
+    }
+
     @Transactional
     public void deleteMission(final Long memberId, final Long missionId) {
         Mission mission = missionRepository.getMission(missionId);

src/main/java/com/nexters/goalpanzi/domain/mission/InvitationCode.java

@@ -7,6 +7,7 @@
 import lombok.NoArgsConstructor;
 import org.springframework.util.StringUtils;
 
+import java.util.Objects;
 import java.util.Random;
 
 import static com.nexters.goalpanzi.exception.ErrorCode.INVALID_INVITATION_CODE;
@@ -46,4 +47,24 @@ private void validate() {
             throw new IllegalArgumentException(INVALID_INVITATION_CODE.getMessage());
         }
     }
+
+    @Override
+    public boolean equals(final Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        InvitationCode code1 = (InvitationCode) o;
+        return Objects.equals(code, code1.code);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(code);
+    }
+
+    @Override
+    public String toString() {
+        return "InvitationCode{" +
+                "code='" + code + '\'' +
+                '}';
+    }
 }

src/main/java/com/nexters/goalpanzi/presentation/mission/MissionController.java

@@ -3,6 +3,7 @@
 import com.nexters.goalpanzi.application.mission.MissionService;
 import com.nexters.goalpanzi.application.mission.dto.response.MissionDetailResponse;
 import com.nexters.goalpanzi.common.argumentresolver.LoginMemberId;
+import com.nexters.goalpanzi.domain.mission.InvitationCode;
 import com.nexters.goalpanzi.presentation.mission.dto.CreateMissionRequest;
 import jakarta.validation.Valid;
 import lombok.RequiredArgsConstructor;
@@ -13,6 +14,7 @@
 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
@@ -51,4 +53,13 @@ public ResponseEntity<MissionDetailResponse> deleteMission(
 
         return ResponseEntity.noContent().build();
     }
+
+    @Override
+    @GetMapping
+    public ResponseEntity<MissionDetailResponse> getMissionByInvitationCode(
+            @RequestParam final String invitationCode) {
+        MissionDetailResponse response = missionService.getMissionByInvitationCode(new InvitationCode(invitationCode));
+
+        return ResponseEntity.ok(response);
+    }
 }

src/main/java/com/nexters/goalpanzi/presentation/mission/MissionControllerDocs.java

@@ -11,6 +11,7 @@
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestParam;
 
 @Tag(name = "미션")
 public interface MissionControllerDocs {
@@ -31,4 +32,10 @@ ResponseEntity<MissionDetailResponse> deleteMission(
             @PathVariable("/{missionId}") Long missionId,
             @Parameter(in = ParameterIn.HEADER, hidden = true) @LoginMemberId final Long memberId
     );
+
+    @Operation(summary = "초대코드로 미션 조회", description = "초대코드로 미션정보를 조회합니다.")
+    ResponseEntity<MissionDetailResponse> getMissionByInvitationCode(
+            @RequestParam String invitationCode
+    );
+
 }

src/test/java/com/nexters/goalpanzi/acceptance/MissionAcceptanceTest.java

@@ -67,6 +67,31 @@ public class MissionAcceptanceTest extends AcceptanceTest {
                 () -> assertThat(actual.hostMemberId()).isEqualTo(1L));
     }
 
+    @Test
+    void 초대코드로_미션을_조회한다() {
+        LoginResponse login = 구글_로그인(new GoogleLoginCommand(EMAIL_HOST)).as(LoginResponse.class);
+
+        CreateMissionRequest request = new CreateMissionRequest(DESCRIPTION, LocalDateTime.now(),
+                LocalDateTime.now().plusDays(5), TimeOfDay.EVERYDAY,
+                List.of(DayOfWeek.MONDAY, DayOfWeek.FRIDAY), 20);
+
+        MissionDetailResponse mission = 미션_생성(request, login.accessToken()).as(MissionDetailResponse.class);
+
+        MissionDetailResponse actual = RestAssured.given().log().all()
+                .contentType(MediaType.APPLICATION_JSON_VALUE)
+                .header(HttpHeaders.AUTHORIZATION, BEARER + login.accessToken())
+                .when().get("/api/missions?invitationCode=" + mission.invitationCode())
+                .then().log().all()
+                .statusCode(HttpStatus.OK.value())
+                .extract().as(MissionDetailResponse.class);
+
+        assertAll(
+                () -> assertThat(actual.description()).isEqualTo(DESCRIPTION),
+                () -> assertThat(actual.boardCount()).isEqualTo(20),
+                () -> assertThat(actual.missionDays()).containsExactly(DayOfWeek.MONDAY, DayOfWeek.FRIDAY),
+                () -> assertThat(actual.hostMemberId()).isEqualTo(1L));
+    }
+
     @Test
     void 미션을_생성한_사용자는_자동으로_경쟁에_참가된다() {
         LoginResponse login = 구글_로그인(new GoogleLoginCommand(EMAIL_HOST)).as(LoginResponse.class);