feat: 현재 영업 중인 상점 수 조회 API 추가

src/main/java/in/koreatech/koin/domain/shop/controller/ShopApi.java

@@ -1,6 +1,7 @@
 package in.koreatech.koin.domain.shop.controller;
 
 import static in.koreatech.koin.domain.user.model.UserType.*;
+import static in.koreatech.koin.global.code.ApiResponseCode.*;
 import static io.swagger.v3.oas.annotations.enums.ParameterIn.PATH;
 
 import java.util.List;
@@ -16,6 +17,7 @@
 import in.koreatech.koin.domain.shop.dto.shop.ShopsFilterCriteriaV3;
 import in.koreatech.koin.domain.shop.dto.shop.ShopsSortCriteria;
 import in.koreatech.koin.domain.shop.dto.shop.ShopsSortCriteriaV3;
+import in.koreatech.koin.domain.shop.dto.shop.response.OpenShopsCountResponse;
 import in.koreatech.koin.domain.shop.dto.shop.response.ShopCategoriesResponse;
 import in.koreatech.koin.domain.shop.dto.shop.response.ShopResponse;
 import in.koreatech.koin.domain.shop.dto.shop.response.ShopResponseV2;
@@ -24,7 +26,6 @@
 import in.koreatech.koin.domain.shop.dto.shop.response.ShopsResponseV2;
 import in.koreatech.koin.domain.shop.dto.shop.response.ShopsResponseV3;
 import in.koreatech.koin.global.auth.Auth;
-import in.koreatech.koin.global.code.ApiResponseCode;
 import in.koreatech.koin.global.code.ApiResponseCodes;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
@@ -56,7 +57,7 @@ ResponseEntity<ShopResponse> getShopById(
             - openTime, closeTime 응답값 추가
         """)
     @ApiResponseCodes({
-        ApiResponseCode.OK
+        OK
     })
     @GetMapping("/v2/shops/{id}")
     ResponseEntity<ShopResponseV2> getShopByIdV2(
@@ -87,6 +88,13 @@ ResponseEntity<ShopSummaryResponse> getShopSummary(
     @GetMapping("/shops")
     ResponseEntity<ShopsResponse> getShops();
 
+    @ApiResponseCodes({
+        OK
+    })
+    @Operation(summary = "현재 영업 중인 상점 개수 조회")
+    @GetMapping("/shops/open/count")
+    ResponseEntity<OpenShopsCountResponse> getOpenShopsCount();
+
     @ApiResponses(
         value = {
             @ApiResponse(responseCode = "200"),

src/main/java/in/koreatech/koin/domain/shop/controller/ShopController.java

@@ -18,6 +18,7 @@
 import in.koreatech.koin.domain.shop.dto.shop.ShopsFilterCriteriaV3;
 import in.koreatech.koin.domain.shop.dto.shop.ShopsSortCriteria;
 import in.koreatech.koin.domain.shop.dto.shop.ShopsSortCriteriaV3;
+import in.koreatech.koin.domain.shop.dto.shop.response.OpenShopsCountResponse;
 import in.koreatech.koin.domain.shop.dto.shop.response.ShopCategoriesResponse;
 import in.koreatech.koin.domain.shop.dto.shop.response.ShopResponse;
 import in.koreatech.koin.domain.shop.dto.shop.response.ShopResponseV2;
@@ -68,6 +69,12 @@ public ResponseEntity<ShopsResponse> getShops() {
         return ResponseEntity.ok(shopsResponse);
     }
 
+    @GetMapping("/shops/open/count")
+    public ResponseEntity<OpenShopsCountResponse> getOpenShopsCount() {
+        OpenShopsCountResponse response = shopService.getOpenShopsCount();
+        return ResponseEntity.ok(response);
+    }
+
     @GetMapping("/shops/categories")
     public ResponseEntity<ShopCategoriesResponse> getShopsCategories() {
         ShopCategoriesResponse shopCategoriesResponse = shopService.getShopsCategories();

src/main/java/in/koreatech/koin/domain/shop/dto/shop/response/OpenShopsCountResponse.java

@@ -0,0 +1,11 @@
+package in.koreatech.koin.domain.shop.dto.shop.response;
+
+import static io.swagger.v3.oas.annotations.media.Schema.RequiredMode.REQUIRED;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+
+public record OpenShopsCountResponse(
+    @Schema(example = "24", description = "현재 영업 중인 상점 개수", requiredMode = REQUIRED)
+    Integer count
+) {
+}

src/main/java/in/koreatech/koin/domain/shop/repository/shop/ShopRepository.java

@@ -4,6 +4,7 @@
 import in.koreatech.koin.domain.shop.exception.ShopNotFoundException;
 import in.koreatech.koin.domain.shop.model.shop.Shop;
 import java.time.LocalDate;
+import java.time.LocalTime;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
@@ -36,6 +37,41 @@ default Shop getById(Integer shopId) {
     """)
     List<Shop> findAll();
 
+    @Query("""
+        SELECT COUNT(DISTINCT s.id)
+        FROM Shop s
+        JOIN s.shopOpens so
+        WHERE s.isDeleted = false
+        AND so.isDeleted = false
+        AND so.closed = false
+        AND (
+            (
+                so.dayOfWeek = :currentDayOfWeek
+                AND (
+                    (
+                        so.closeTime > so.openTime
+                        AND so.openTime <= :currentTime
+                        AND so.closeTime >= :currentTime
+                    )
+                    OR (
+                        so.closeTime <= so.openTime
+                        AND so.openTime <= :currentTime
+                    )
+                )
+            )
+            OR (
+                so.dayOfWeek = :previousDayOfWeek
+                AND so.closeTime <= so.openTime
+                AND so.closeTime >= :currentTime
+            )
+        )
+    """)
+    Long countOpenShops(
+        @Param("currentDayOfWeek") String currentDayOfWeek,
+        @Param("previousDayOfWeek") String previousDayOfWeek,
+        @Param("currentTime") LocalTime currentTime
+    );
+
     @Query("""
         SELECT s
         FROM Shop s

src/main/java/in/koreatech/koin/domain/shop/service/ShopService.java

@@ -6,9 +6,11 @@
 import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.time.ZoneOffset;
+import java.time.format.TextStyle;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 
 import org.springframework.data.domain.Sort;
@@ -24,6 +26,7 @@
 import in.koreatech.koin.domain.shop.dto.shop.ShopsFilterCriteriaV3;
 import in.koreatech.koin.domain.shop.dto.shop.ShopsSortCriteria;
 import in.koreatech.koin.domain.shop.dto.shop.ShopsSortCriteriaV3;
+import in.koreatech.koin.domain.shop.dto.shop.response.OpenShopsCountResponse;
 import in.koreatech.koin.domain.shop.dto.shop.response.ShopCategoriesResponse;
 import in.koreatech.koin.domain.shop.dto.shop.response.ShopResponse;
 import in.koreatech.koin.domain.shop.dto.shop.response.ShopResponseV2;
@@ -82,6 +85,14 @@ public ShopsResponse getShops() {
         return ShopsResponse.from(shops, eventDuration, now);
     }
 
+    public OpenShopsCountResponse getOpenShopsCount() {
+        LocalDateTime now = LocalDateTime.now(clock);
+        String currentDayOfWeek = getDayOfWeek(now);
+        String previousDayOfWeek = getDayOfWeek(now.minusDays(1));
+        Long count = shopRepository.countOpenShops(currentDayOfWeek, previousDayOfWeek, now.toLocalTime());
+        return new OpenShopsCountResponse(Math.toIntExact(count));
+    }
+
     public ShopCategoriesResponse getShopsCategories() {
         List<ShopCategory> shopCategories = shopCategoryRepository.findAll(Sort.by("orderIndex"));
         return ShopCategoriesResponse.from(shopCategories);
@@ -178,4 +189,8 @@ public void publishCallNotification(Integer shopId, Integer studentId) {
     private boolean isSubscribeReviewNotification(Integer studentId) {
         return notificationSubscribeRepository.existsByUserIdAndSubscribeTypeAndDetailTypeIsNull(studentId, REVIEW_PROMPT);
     }
+
+    private String getDayOfWeek(LocalDateTime dateTime) {
+        return dateTime.getDayOfWeek().getDisplayName(TextStyle.FULL, Locale.US).toUpperCase();
+    }
 }

src/test/java/in/koreatech/koin/acceptance/domain/ShopApiTest.java

@@ -429,6 +429,22 @@ void setUp() {
                 """, 마슬랜_영업여부, 신전_떡볶이_영업여부)));
     }
 
+    @Test
+    void 현재_영업중인_상점_개수를_조회한다() throws Exception {
+        shopFixture.영업중이_아닌_신전_떡볶이(owner);
+
+        // 2024-01-15 12:00 월요일 기준
+        mockMvc.perform(
+                get("/shops/open/count")
+            )
+            .andExpect(status().isOk())
+            .andExpect(content().json("""
+                {
+                    "count": 1
+                }
+                """));
+    }
+
     @Test
     void 상점의_정렬된_모든_카테고리_조회() throws Exception {
         shopCategoryFixture.카테고리_일반음식(shopParentCategory_가게); // 카테고리_치킨이 먼저 생성됨