[#7] Feat: GET method to read the whole menus of a date

Author: 김산

src/main/java/com/example/helper/constant/Types.java

@@ -0,0 +1,23 @@
+package com.example.helper.constant;
+
+public enum Types {
+    LANG_KOR(0),
+    LANG_ENG(1),
+    BLDG1_1ST(0),
+    BLDG1_2ND(1),
+    BLDG2_1ST(2),
+    KIND_BREAKFAST(0),
+    KIND_LUNCH(1),
+    KIND_DINNER(2),
+    KIND_LUNCH_CORNER(3);
+
+    private Integer type;
+
+    Types(Integer type) {
+        this.type = type;
+    }
+
+    public Integer getType() {
+        return type;
+    }
+}

src/main/java/com/example/helper/controller/MealController.java

@@ -234,10 +234,26 @@ public String readSpecEngMeal() throws JsonProcessingException {
         return result;
     }
 
-    @GetMapping("/date")
-    public List<DateMealDto> DateMealRead(DateReqDto dateReqDto) {
-
-        List<DateMealDto> dateMealDtoList = dateMealService.getDateMeal(dateReqDto);
+    // FE쪽에서 query에 담아주면 아래처럼 dto 객체 하나만 req로 받으면 되서 코드 깔끔함.
+    // DateMealDto dateMealDtoList = dateMealService.getDateMeal(dateReqDto);
+    // 근데 FE에서 보낼때 parameter 일일이 적기 귀찮으니 pathvariable로 받아서 처리
+    @GetMapping("/date/{year}/{month}/{day}/{bldgType}/{langType}")
+    public DateMealDto DateMealRead(
+            @PathVariable("langType") Integer langType,
+            @PathVariable("bldgType") Integer bldgType,
+            @PathVariable("year") Integer year,
+            @PathVariable("month") Integer month,
+            @PathVariable("day") Integer  day) {
+
+        DateReqDto dateReqDto = DateReqDto.builder()
+                .langType(langType)
+                .bldgType(bldgType)
+                .year(year.toString())
+                .month(month.toString())
+                .date(day.toString())
+                .build();
+
+        DateMealDto dateMealDtoList = dateMealService.getDateMenus(dateReqDto);
 
         return dateMealDtoList;
     }

src/main/java/com/example/helper/dto/DateMealDto.java

@@ -1,11 +1,24 @@
 package com.example.helper.dto;
 
-import lombok.Data;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
 
-@Data
+// https://dev-jhl.tistory.com/entry/Lombok-올바른-Lombok-사용법-Builder
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
 public class DateMealDto {
     private String breakfast;
-    private String lunch_A;
+    private String lunch;
+    private String lunch_corner;
     private String dinner;
-    private String lunch_B;
+
+    @Builder
+    public DateMealDto(String breakfast, String lunch, String lunch_corner, String dinner) {
+        this.breakfast = breakfast;
+        this.lunch = lunch;
+        this.lunch_corner = lunch_corner;
+        this.dinner = dinner;
+    }
 }

src/main/java/com/example/helper/dto/DateReqDto.java

@@ -1,12 +1,27 @@
 package com.example.helper.dto;
 
-import lombok.Data;
+import lombok.AccessLevel;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
 
-@Data
+@Getter
+@ToString
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
 public class DateReqDto {
+    private Integer langType;
+    private Integer bldgType;
     private String year;
     private String month;
     private String date;
-    private Integer langType;
-    private Integer bldgType;
+
+    @Builder
+    public DateReqDto(Integer langType, Integer bldgType, String year, String month, String date) {
+        this.langType = langType;
+        this.bldgType = bldgType;
+        this.year = year;
+        this.month = month;
+        this.date = date;
+    }
 }

src/main/java/com/example/helper/repository/SqlMealRepository.java

@@ -33,6 +33,18 @@ public Optional<Meal> findByPk(Integer bldgType, Integer langType, Integer dateT
         return result.stream().findAny();
     }
 
+    public Optional<Meal> findByDate(Integer bldgType, Integer langType, Integer kindType, String date) {
+        List<Meal> result = em.createQuery("select m from Meal m where " +
+                        "m.bldgType = :bldgType and m.langType = :langType and m.kindType = :kindType " +
+                        "and m.date = :date", Meal.class)
+                .setParameter("bldgType", bldgType)
+                .setParameter("langType", langType)
+                .setParameter("kindType", kindType)
+                .setParameter("date", date)
+                .getResultList();
+        return result.stream().findAny();
+    }
+
     @Override
     public Optional<Meal> findById(Long mealId) {
         Meal meal = em.find(Meal.class, mealId);

src/main/java/com/example/helper/service/DateMealService.java

@@ -1,17 +1,74 @@
 package com.example.helper.service;
 
+import com.example.helper.constant.Types;
 import com.example.helper.dto.DateMealDto;
 import com.example.helper.dto.DateReqDto;
-import java.util.List;
+import com.example.helper.entity.Meal;
+import com.example.helper.repository.SqlMealRepository;
+import java.util.Optional;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
 @Service
 @Transactional
+@Slf4j
 public class DateMealService {
-    // TODO: exception handling(target data is not in DB)
 
-    public List<DateMealDto> getDateMeal(DateReqDto dateReqDto) {
-        return null;
+    @Autowired
+    private SqlMealRepository sqlMealRepository;
+
+    public DateMealDto getDateMenus(DateReqDto dateReqDto) {
+        DateMealDto result = DateMealDto.builder()
+                .breakfast(getMenuFromMeal(dateReqDto, Types.KIND_BREAKFAST.getType()))
+                .lunch(getMenuFromMeal(dateReqDto, Types.KIND_LUNCH.getType()))
+                .dinner(getMenuFromMeal(dateReqDto, Types.KIND_DINNER.getType()))
+                .lunch_corner((getMenuFromMeal(dateReqDto, Types.KIND_LUNCH_CORNER.getType())))
+                .build();
+
+        // TODO: exception handling(target data is not in DB)
+
+        return result;
+    }
+
+    public String getMenuFromMeal(DateReqDto dateReqDto, Integer kindType) {
+        String result = "";
+
+        // DB에는 KIND_TYPE이 0,1,2만 존재. 따라서 KIND_LUNCH_CORNER는 KIND_LUNCH로 찾아서 getSpecial해야함.
+        Integer temp = kindType; // Integer는 immutable이므로 '='로 복사가능
+        if (kindType.equals(Types.KIND_LUNCH_CORNER.getType())) {
+            temp  = Types.KIND_LUNCH.getType();
+        }
+
+        Optional<Meal> meal = sqlMealRepository.findByDate(
+                dateReqDto.getBldgType(),
+                dateReqDto.getLangType(),
+                temp,
+                conv2DateStr(dateReqDto.getYear(), dateReqDto.getMonth(), dateReqDto.getDate()));
+
+        if (meal.isPresent()) {
+            result = meal.get().getMenu();
+            if (kindType.equals(Types.KIND_LUNCH_CORNER.getType())) {
+                result = meal.get().getSpecial();
+            }
+        }
+        return result;
+    }
+
+    public String conv2DateStr(String year, String month, String date) {
+        String result = "";
+        result = year + "-" + padZero(month) + "-" + padZero(date);
+        return result;
+    }
+
+    public String padZero(String str) {
+        String result = "";
+        if (str.length() == 1) {
+            result = "0" + str;
+        } else {
+            result = str;
+        }
+        return result;
     }
 }