proj-acquirex/src/main/java/com/acquirex/approval/service/AcquisitionApprovalService.java

@@ -0,0 +1,115 @@
+package com.acquirex.approval.service;
+
+import com.acquirex.approval.domain.AcquisitionApproval;
+import com.acquirex.approval.domain.AcquisitionApproval.ApprovalStatus;
+import com.acquirex.approval.repository.AcquisitionApprovalRepository;
+import jakarta.validation.constraints.*;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.UUID;
+import java.util.stream.Collectors;
+
+/** 카드 매입 승인 서비스 - Spring Boot 3 전환 적용 */
+@Service
+@Transactional(readOnly = true)
+public class AcquisitionApprovalService {
+
+    private final AcquisitionApprovalRepository repository;
+
+    public AcquisitionApprovalService(AcquisitionApprovalRepository repository) {
+        this.repository = repository;
+    }
+
+    /** 매입 승인 요청 처리 */
+    @Transactional
+    public ApprovalResponse processApproval(ApprovalRequest request) {
+        String approvalNumber = generateApprovalNumber();
+        AcquisitionApproval approval = new AcquisitionApproval(
+                request.merchantId, maskCardNumber(request.cardNumber),
+                request.approvalAmount, approvalNumber, ApprovalStatus.APPROVED, LocalDateTime.now());
+        return toResponse(repository.save(approval));
+    }
+
+    /** 승인 번호로 조회 */
+    public ApprovalResponse findByApprovalNumber(String approvalNumber) {
+        return repository.findByApprovalNumber(approvalNumber)
+                .map(this::toResponse)
+                .orElseThrow(() -> new IllegalArgumentException("승인 번호를 찾을 수 없습니다: " + approvalNumber));
+    }
+
+    /** 가맹점별 승인 목록 조회 */
+    public List<ApprovalResponse> findByMerchantId(String merchantId, ApprovalStatus status) {
+        return repository.findByMerchantIdAndStatus(merchantId, status)
+                .stream().map(this::toResponse).collect(Collectors.toList());
+    }
+
+    /** 승인 취소 처리 */
+    @Transactional
+    public ApprovalResponse cancelApproval(Long id) {
+        AcquisitionApproval approval = repository.findById(id)
+                .orElseThrow(() -> new IllegalArgumentException("승인 정보를 찾을 수 없습니다: " + id));
+        if (approval.getStatus() == ApprovalStatus.CANCELLED) {
+            throw new IllegalStateException("이미 취소된 승인입니다");
+        }
+        approval.setStatus(ApprovalStatus.CANCELLED);
+        return toResponse(repository.save(approval));
+    }
+
+    private String generateApprovalNumber() {
+        return "AP" + System.currentTimeMillis() + UUID.randomUUID().toString().substring(0, 4).toUpperCase();
+    }
+
+    private String maskCardNumber(String cardNumber) {
+        if (cardNumber == null || cardNumber.length() < 10) return cardNumber;
+        return cardNumber.substring(0, 6) + "****" + cardNumber.substring(cardNumber.length() - 4);
+    }
+
+    private ApprovalResponse toResponse(AcquisitionApproval a) {
+        return new ApprovalResponse(a.getId(), a.getMerchantId(), a.getCardNumber(),
+                a.getApprovalAmount(), a.getApprovalNumber(), a.getStatus(), a.getApprovalDatetime());
+    }
+
+    /** 카드 매입 승인 요청 DTO - Spring Boot 3: jakarta.validation 적용 */
+    public static class ApprovalRequest {
+        @NotBlank(message = "가맹점 ID는 필수입니다")
+        @Size(max = 20)
+        public String merchantId;
+
+        @NotBlank(message = "카드번호는 필수입니다")
+        @Pattern(regexp = "\\d{13,19}", message = "카드번호는 13~19자리 숫자입니다")
+        public String cardNumber;
+
+        @NotNull(message = "승인 금액은 필수입니다")
+        @DecimalMin(value = "0.01", message = "승인 금액은 0보다 커야 합니다")
+        @DecimalMax(value = "999999999.99")
+        public BigDecimal approvalAmount;
+
+        public ApprovalRequest() {}
+        public ApprovalRequest(String merchantId, String cardNumber, BigDecimal approvalAmount) {
+            this.merchantId = merchantId; this.cardNumber = cardNumber; this.approvalAmount = approvalAmount;
+        }
+    }
+
+    /** 카드 매입 승인 응답 DTO */
+    public static class ApprovalResponse {
+        public Long id;
+        public String merchantId;
+        public String cardNumber;
+        public BigDecimal approvalAmount;
+        public String approvalNumber;
+        public ApprovalStatus status;
+        public LocalDateTime approvalDatetime;
+
+        public ApprovalResponse() {}
+        public ApprovalResponse(Long id, String merchantId, String cardNumber, BigDecimal approvalAmount,
+                                String approvalNumber, ApprovalStatus status, LocalDateTime approvalDatetime) {
+            this.id = id; this.merchantId = merchantId; this.cardNumber = cardNumber;
+            this.approvalAmount = approvalAmount; this.approvalNumber = approvalNumber;
+            this.status = status; this.approvalDatetime = approvalDatetime;
+        }
+    }
+}