feat: api 구현

src/main/java/server/poptato/todo/api/TodoController.java

@@ -11,6 +11,7 @@
 import server.poptato.todo.application.response.BacklogListResponseDto;
 import server.poptato.todo.application.response.PaginatedHistoryResponseDto;
 import server.poptato.todo.application.response.TodayListResponseDto;
+import server.poptato.todo.application.response.TodoDetailResponseDto;
 import server.poptato.user.resolver.UserId;
 
 import java.time.LocalDate;
@@ -73,9 +74,16 @@ public BaseResponse dragAndDrop(@UserId Long userId,
     }
 
     @PostMapping("/backlog")
-    public BaseResponse generateBacklog(//@UserId Long userId,
+    public BaseResponse generateBacklog(@UserId Long userId,
                                         @Validated @RequestBody BacklogCreateRequestDto backlogCreateRequestDto){
-        todoService.generateBacklog(1L, backlogCreateRequestDto.getContent());
+        todoService.generateBacklog(userId, backlogCreateRequestDto.getContent());
         return new BaseResponse<>();
     }
+
+    @GetMapping("/todo/{todoId}")
+    public BaseResponse<TodoDetailResponseDto> getTodoInfo(@UserId Long userId,
+                                                           @PathVariable Long todoId){
+        TodoDetailResponseDto response = todoService.getTodoInfo(userId, todoId);
+        return new BaseResponse<>(response);
+    }
 }

src/main/java/server/poptato/todo/application/TodoService.java

@@ -11,10 +11,7 @@
 import server.poptato.todo.api.request.SwipeRequestDto;
 import org.springframework.transaction.annotation.Transactional;
 import server.poptato.global.response.BaseResponse;
-import server.poptato.todo.application.response.BacklogListResponseDto;
-import server.poptato.todo.application.response.HistoryResponseDto;
-import server.poptato.todo.application.response.PaginatedHistoryResponseDto;
-import server.poptato.todo.application.response.TodayListResponseDto;
+import server.poptato.todo.application.response.*;
 import server.poptato.todo.domain.entity.Todo;
 import server.poptato.todo.domain.repository.TodoRepository;
 import server.poptato.todo.domain.value.TodayStatus;
@@ -29,6 +26,7 @@
 import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;
+import java.util.Optional;
 import java.util.stream.Collectors;
 
 import static server.poptato.todo.exception.errorcode.TodoExceptionErrorCode.TODO_NOT_EXIST;
@@ -217,4 +215,18 @@ public Long generateBacklog(Long userId, String content) {
         Todo newBacklog = todoRepository.save(backlog);
         return newBacklog.getId();
     }
+
+    public TodoDetailResponseDto getTodoInfo(Long userId, Long todoId) {
+        checkIsExistUser(userId);
+        Todo findTodo = todoRepository.findById(todoId)
+                .orElseThrow(() -> new TodoException(TODO_NOT_EXIST));
+        if(findTodo.getUserId()!=userId)
+            throw new TodoException(TodoExceptionErrorCode.TODO_USER_NOT_MATCH);
+
+        return TodoDetailResponseDto.builder()
+                    .content(findTodo.getContent())
+                    .isBookmark(findTodo.isBookmark())
+                    .deadline(findTodo.getDeadline())
+                    .build();
+    }
 }

src/main/java/server/poptato/todo/application/response/TodoDetailResponseDto.java

@@ -0,0 +1,16 @@
+package server.poptato.todo.application.response;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+
+import java.time.LocalDate;
+
+@Getter
+@Builder
+@AllArgsConstructor
+public class TodoDetailResponseDto {
+    String content;
+    LocalDate deadline;
+    Boolean isBookmark;
+}