[feat] 조회수 조희 API (#31)

* [feat] create Response dto

* [feat] create logic for report counts

* [feat] change ResponseEntity to HankkiResponse

* [refac] modify indentation

* [refac] apply code review

src/main/java/org/hankki/hankkiserver/api/report/controller/ReportController.java

@@ -0,0 +1,24 @@
+package org.hankki.hankkiserver.api.report.controller;
+
+import lombok.RequiredArgsConstructor;
+import org.hankki.hankkiserver.api.dto.HankkiResponse;
+import org.hankki.hankkiserver.api.report.service.ReportQueryService;
+import org.hankki.hankkiserver.api.report.service.response.ReportServiceResponse;
+import org.hankki.hankkiserver.common.code.CommonSuccessCode;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("/api/v1")
+public class ReportController {
+
+    private final ReportQueryService reportQueryService;
+
+    @GetMapping("/reports/count")
+    public HankkiResponse<ReportServiceResponse> getReportCounts() {
+        return HankkiResponse.success(CommonSuccessCode.OK, ReportServiceResponse.of(reportQueryService.getMyReportSequence()));
+
+    }
+}

src/main/java/org/hankki/hankkiserver/api/report/service/ReportFinder.java

@@ -0,0 +1,17 @@
+package org.hankki.hankkiserver.api.report.service;
+
+import lombok.RequiredArgsConstructor;
+import org.hankki.hankkiserver.domain.report.repository.ReportRepository;
+import org.springframework.stereotype.Component;
+import org.springframework.transaction.annotation.Transactional;
+
+@Component
+@RequiredArgsConstructor
+public class ReportFinder {
+
+    private final ReportRepository reportRepository;
+
+    public long getReportCount() {
+        return reportRepository.count();
+    }
+}

src/main/java/org/hankki/hankkiserver/api/report/service/ReportQueryService.java

@@ -0,0 +1,19 @@
+package org.hankki.hankkiserver.api.report.service;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+@RequiredArgsConstructor
+public class ReportQueryService {
+
+    private static final long REPORT_SEQUENCE = 1;
+
+    private final ReportFinder reportFinder;
+
+    @Transactional(readOnly = true)
+    public long getMyReportSequence() {
+        return reportFinder.getReportCount() + REPORT_SEQUENCE;
+    }
+}

src/main/java/org/hankki/hankkiserver/api/report/service/response/ReportServiceResponse.java

@@ -0,0 +1,9 @@
+package org.hankki.hankkiserver.api.report.service.response;
+
+public record ReportServiceResponse(
+        long count
+) {
+    public static ReportServiceResponse of(long count) {
+        return new ReportServiceResponse(count);
+    }
+}