[Spring MVC] 김나윤 미션 제출합니다.

build.gradle

@@ -16,6 +16,8 @@ dependencies {
     implementation 'org.springframework.boot:spring-boot-starter'
     testImplementation 'org.springframework.boot:spring-boot-starter-test'
     testImplementation 'io.rest-assured:rest-assured:5.3.1'
+    implementation 'org.springframework.boot:spring-boot-starter-web'
+    implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
 }
 
 test {

src/main/java/roomescape/controller/HomeController.java

@@ -0,0 +1,13 @@
+package roomescape.controller;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+
+@Controller
+public class HomeController {
+
+    @GetMapping("/")
+    public String home() {
+        return "home";
+    }
+}

src/main/java/roomescape/controller/ReservationController.java

@@ -0,0 +1,124 @@
+package roomescape.controller;
+
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.*;
+import roomescape.dto.ReservationReqDto;
+import roomescape.dto.ReservationResDto;
+import roomescape.exception.BadRequestException;
+import roomescape.model.Reservation;
+import roomescape.template.ApiResponseTemplate;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.atomic.AtomicLong;
+import java.util.stream.Collectors;
+
+@Controller
+public class ReservationController {
+
+    private final List<Reservation> reservations = new ArrayList<>();
+    private final AtomicLong index = new AtomicLong(1);
+
+    @GetMapping("/reservation")
+    public String reservation() {
+        return "reservation";
+    }
+
+    @GetMapping(value = "/reservations", produces = "text/html")
+    public String reservationPage() {
+        return "new-reservation";
+    }
+
+    @GetMapping(value = "/reservations", produces = "application/json")
+    @ResponseBody
+    public ApiResponseTemplate<List<ReservationResDto>> getReservations() {
+        List<ReservationResDto> dtoList = reservations.stream()
+                .map(reservation -> new ReservationResDto(
+                        reservation.getId(),
+                        reservation.getName(),
+                        reservation.getDate(),
+                        reservation.getTime()))
+                .collect(Collectors.toList());
+
+        return new ApiResponseTemplate<>("success", dtoList);
+    }
+
+    @PostMapping("/reservations")
+    @ResponseBody
+    public ResponseEntity<ApiResponseTemplate<ReservationResDto>> addReservation(@RequestBody ReservationReqDto reservationReqDto) {
+        validateReservationRequest(reservationReqDto);
+
+        Reservation newReservation = new Reservation(
+                index.getAndIncrement(),
+                reservationReqDto.getName(),
+                reservationReqDto.getDate(),
+                reservationReqDto.getTime()
+        );
+        reservations.add(newReservation);
+
+        HttpHeaders headers = new HttpHeaders();
+        headers.add("Location", "/reservations/" + newReservation.getId());
+
+        ReservationResDto newReservationResDto = new ReservationResDto(
+                newReservation.getId(),
+                newReservation.getName(),
+                newReservation.getDate(),
+                newReservation.getTime()
+        );
+
+        return new ResponseEntity<>(
+                new ApiResponseTemplate<>("success", newReservationResDto),
+                headers,
+                HttpStatus.CREATED
+        );
+    }
+
+    @DeleteMapping("/reservations/{id}")
+    @ResponseBody
+    public ResponseEntity<ApiResponseTemplate<String>> deleteReservation(@PathVariable Long id) {
+        ensureReservationExists(id);
+        removeReservation(id);
+        return createSuccessDeleteResponse();
+    }
+
+    private ResponseEntity<ApiResponseTemplate<String>> createSuccessDeleteResponse() {
+        return new ResponseEntity<>(new ApiResponseTemplate<>("success", "예약 삭제 성공"), HttpStatus.NO_CONTENT);
+    }
+
+    private void ensureReservationExists(Long id) {
+        if (!reservationExists(id)) {
+            throw new BadRequestException("예약 삭제 실패");
+        }
+    }
+
+    private void validateReservationRequest(ReservationReqDto reservationReqDto) {
+        if (reservationReqDto.getName() == null || reservationReqDto.getName().isEmpty()) {
+            throw new BadRequestException("이름을 작성해주세요");
+        }
+        if (reservationReqDto.getDate() == null) {
+            throw new BadRequestException("날짜를 선택해주세요");
+        }
+        if (reservationReqDto.getTime() == null || reservationReqDto.getTime().isEmpty()) {
+            throw new BadRequestException("시간을 선택해주세요");
+        }
+    }
+
+    private boolean reservationExists(Long id) {
+        return reservations.stream().anyMatch(reservation -> reservation.getId().equals(id));
+    }
+
+    private void removeReservation(Long id) {
+        reservations.removeIf(reservation -> reservation.getId().equals(id));
+    }
+
+    @PostMapping("/reservations/reset")
+    @ResponseBody
+    public ResponseEntity<Void> resetReservations() {
+        index.set(1);
+        reservations.clear();
+        return new ResponseEntity<>(HttpStatus.NO_CONTENT);
+    }
+}

src/main/java/roomescape/dto/ReservationReqDto.java

@@ -0,0 +1,29 @@
+package roomescape.dto;
+
+import java.time.LocalDate;
+
+public class ReservationReqDto {
+    private String name;
+    private LocalDate date;
+    private String time;
+
+    public ReservationReqDto() {}
+
+    public ReservationReqDto(String name, LocalDate date, String time) {
+        this.name = name;
+        this.date = date;
+        this.time = time;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public LocalDate getDate() {
+        return date;
+    }
+
+    public String getTime() {
+        return time;
+    }
+}

src/main/java/roomescape/dto/ReservationResDto.java

@@ -0,0 +1,35 @@
+package roomescape.dto;
+
+import java.time.LocalDate;
+
+public class ReservationResDto {
+    private Long id;
+    private String name;
+    private LocalDate date;
+    private String time;
+
+    public ReservationResDto() {}
+
+    public ReservationResDto(Long id, String name, LocalDate date, String time) {
+        this.id = id;
+        this.name = name;
+        this.date = date;
+        this.time = time;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public LocalDate getDate() {
+        return date;
+    }
+
+    public String getTime() {
+        return time;
+    }
+}

src/main/java/roomescape/exception/BadRequestException.java

@@ -0,0 +1,7 @@
+package roomescape.exception;
+
+public class BadRequestException extends IllegalArgumentException {
+    public BadRequestException(String message) {
+        super(message);
+    }
+}

src/main/java/roomescape/exception/GlobalExceptionHandler.java

@@ -0,0 +1,16 @@
+package roomescape.exception;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import roomescape.template.ApiResponseTemplate;
+
+@ControllerAdvice
+public class GlobalExceptionHandler {
+    @ExceptionHandler(BadRequestException.class)
+    public ResponseEntity<ApiResponseTemplate<String>> handleBadRequestException(BadRequestException e) {
+        ApiResponseTemplate<String> response = new ApiResponseTemplate<>("error", e.getMessage());
+        return new ResponseEntity<>(response, HttpStatus.BAD_REQUEST);
+    }
+}

src/main/java/roomescape/model/Reservation.java

@@ -0,0 +1,36 @@
+package roomescape.model;
+
+import java.time.LocalDate;
+
+public class Reservation {
+
+    private Long id;
+    private String name;
+    private LocalDate date;
+    private String time;
+
+    public Reservation() {}
+
+    public Reservation(Long id, String name, LocalDate date, String time) {
+        this.id = id;
+        this.name = name;
+        this.date = date;
+        this.time = time;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public LocalDate getDate() {
+        return date;
+    }
+
+    public String getTime() {
+        return time;
+    }
+}

src/main/java/roomescape/template/ApiResponseTemplate.java

@@ -0,0 +1,20 @@
+package roomescape.template;
+
+public class ApiResponseTemplate<T> {
+
+    private final String status;
+    private final T data;
+
+    public ApiResponseTemplate(String status, T data) {
+        this.status = status;
+        this.data = data;
+    }
+
+    public String getStatus() {
+        return status;
+    }
+
+    public T getData() {
+        return data;
+    }
+}