[feat] #15 - AccountService 생성

src/main/java/com/wedit/weditapp/domain/bankAccounts/service/BankAccountService.java

@@ -0,0 +1,35 @@
+package com.wedit.weditapp.domain.bankAccounts.service;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.springframework.stereotype.Service;
+
+import com.wedit.weditapp.domain.bankAccounts.domain.BankAccounts;
+import com.wedit.weditapp.domain.bankAccounts.domain.repository.BankAccountRepository;
+import com.wedit.weditapp.domain.bankAccounts.dto.BankAccountDTO;
+import com.wedit.weditapp.domain.invitation.domain.Invitation;
+
+import jakarta.transaction.Transactional;
+import lombok.RequiredArgsConstructor;
+
+@Service
+@RequiredArgsConstructor
+@Transactional
+public class BankAccountService {
+	private final BankAccountRepository bankAccountRepository;
+
+	// DTO 리스트를 엔티티 리스트로 변환하여 저장
+	public List<BankAccounts> createBankAccounts(List<BankAccountDTO> bankAccountDTOs, Invitation invitation) {
+		List<BankAccounts> bankAccounts = bankAccountDTOs.stream()
+			.map(dto -> BankAccounts.createBankAccount(
+				dto.getSide(),
+				dto.getAccountNumber(),
+				dto.getBankName(),
+				dto.getAccountHolder(),
+				invitation
+			)).collect(Collectors.toList());
+
+		return bankAccountRepository.saveAll(bankAccounts);
+	}
+}