feat(main-api): 뱃지달기 기능 구현

modules/main-api/src/main/java/com/whoz_in/main_api/command/badge/application/BadgeAttach.java

@@ -0,0 +1,7 @@
+package com.whoz_in.main_api.command.badge.application;
+
+import com.whoz_in.main_api.command.shared.application.Command;
+import java.util.UUID;
+
+public record BadgeAttach(UUID memberId, UUID badgeId) implements Command {
+}

modules/main-api/src/main/java/com/whoz_in/main_api/command/badge/application/BadgeAttachHandler.java

@@ -0,0 +1,27 @@
+package com.whoz_in.main_api.command.badge.application;
+
+import com.whoz_in.domain.badge.model.BadgeId;
+import com.whoz_in.domain.member.MemberRepository;
+import com.whoz_in.domain.member.model.Member;
+import com.whoz_in.domain.member.model.MemberId;
+import com.whoz_in.domain.shared.event.EventBus;
+import com.whoz_in.main_api.command.shared.application.CommandHandler;
+import com.whoz_in.main_api.shared.application.Handler;
+import lombok.RequiredArgsConstructor;
+import org.springframework.transaction.annotation.Transactional;
+
+@Handler
+@RequiredArgsConstructor
+public class BadgeAttachHandler implements CommandHandler<BadgeAttach, Void> {
+    private final MemberRepository repository;
+    private final EventBus eventBus;
+
+    @Transactional
+    @Override
+    public Void handle(BadgeAttach req) {
+        Member member = repository.findByMemberId(new MemberId(req.memberId())).orElseThrow();
+        repository.addBadge(new MemberId(req.memberId()),new BadgeId(req.badgeId()));
+        eventBus.publish(member.pullDomainEvents());
+        return null;
+    }
+}

modules/main-api/src/main/java/com/whoz_in/main_api/command/badge/presentation/BadgeCommandController.java

@@ -1,5 +1,6 @@
 package com.whoz_in.main_api.command.badge.presentation;
 
+import com.whoz_in.main_api.command.badge.application.BadgeAttach;
 import com.whoz_in.main_api.command.badge.application.BadgeRegister;
 import com.whoz_in.main_api.command.shared.application.CommandBus;
 import com.whoz_in.main_api.command.shared.presentation.CommandController;
@@ -20,4 +21,10 @@ public ResponseEntity<SuccessBody<Void>> create(@RequestBody BadgeRegister reque
         dispatch(request);
         return ResponseEntityGenerator.success( "뱃지 생성 완료", HttpStatus.CREATED);
     }
+
+    @PostMapping("/api/v1/badges/members")
+    public ResponseEntity<SuccessBody<Void>> attach(@RequestBody BadgeAttach request) {
+        dispatch(request);
+        return ResponseEntityGenerator.success( "뱃지 달기 완료", HttpStatus.CREATED);
+    }
 }