feat: 단일 태스크 조회 API 구현

* refactor: Task, Section 조회 및 예외처리 코드 함수 분리

* feat: 태스크 조회 API 구현

* fix: 오타 수정

apps/server/src/task/controller/task.controller.ts

@@ -1,4 +1,4 @@
-import { Body, Controller, Param, Patch, Post } from '@nestjs/common';
+import { Body, Controller, Get, Param, Patch, Post } from '@nestjs/common';
 import { TaskService } from '../service/task.service';
 import { CreateTaskRequest } from '../dto/create-task-request.dto';
 import { UpdateTaskRequest } from '../dto/update-task-request.dto';
@@ -22,4 +22,9 @@ export class TaskController {
 	move(@Param('id') id: number, @Body() moveTaskRequest: MoveTaskRequest) {
 		return this.taskService.move(id, moveTaskRequest);
 	}
+
+	@Get(':id')
+	get(@Param('id') id: number) {
+		return this.taskService.get(id);
+	}
 }

apps/server/src/task/dto/task-response.dto.ts

@@ -0,0 +1,21 @@
+import { Task } from '../domain/task.entity';
+
+export class TaskResponse {
+	constructor(task: Task) {
+		this.id = task.id;
+		this.title = task.title;
+		this.description = task.description;
+		this.sectionName = task.section.name;
+		this.position = task.position;
+	}
+
+	id: number;
+
+	title: string;
+
+	description: string;
+
+	sectionName: string;
+
+	position: string;
+}

apps/server/src/task/service/task.service.ts

@@ -10,6 +10,7 @@ import { UpdateTaskRequest } from '../dto/update-task-request.dto';
 import { UpdateTaskResponse } from '../dto/update-task-response.dto';
 import { MoveTaskRequest } from '../dto/move-task-request.dto';
 import { MoveTaskResponse } from '../dto/move-task-response.dto';
+import { TaskResponse } from '../dto/task-response.dto';
 
 @Injectable()
 export class TaskService {
@@ -32,41 +33,50 @@ export class TaskService {
 	}
 
 	async update(id: number, updateTaskRequest: UpdateTaskRequest) {
-		const task = await this.taskRepository.findOneBy({ id });
-		if (!task) {
-			throw new NotFoundException('Task not found');
-		}
+		const task = await this.findTaskOrThrow(id);
 
 		task.title = updateTaskRequest.title ?? task.title;
 		task.description = updateTaskRequest.description ?? task.description;
 
-		const section = await this.sectionRepository.findOneBy({ id: updateTaskRequest.sectionId });
-		if (!section) {
-			throw new NotFoundException('Section not found');
-		}
+		const section = await this.findSectionOrThrow(updateTaskRequest.sectionId);
 		task.section = section;
 
 		await this.taskRepository.save(task);
 		return new UpdateTaskResponse(task);
 	}
 
 	async move(id: number, moveTaskRequest: MoveTaskRequest) {
+		const task = await this.findTaskOrThrow(id);
+
+		const section = await this.findSectionOrThrow(moveTaskRequest.sectionId);
+		task.section = section;
+
+		const beforePosition = LexoRank.parse(moveTaskRequest.beforePosition);
+		const afterPosition = LexoRank.parse(moveTaskRequest.afterPosition);
+		task.position = beforePosition.between(afterPosition).toString();
+
+		await this.taskRepository.save(task);
+		return new MoveTaskResponse(task);
+	}
+
+	async get(id: number) {
+		const task = await this.findTaskOrThrow(id);
+		return new TaskResponse(task);
+	}
+
+	private async findTaskOrThrow(id: number) {
 		const task = await this.taskRepository.findOneBy({ id });
 		if (!task) {
 			throw new NotFoundException('Task not found');
 		}
+		return task;
+	}
 
-		const section = await this.sectionRepository.findOneBy({ id: moveTaskRequest.sectionId });
+	private async findSectionOrThrow(id: number) {
+		const section = await this.sectionRepository.findOneBy({ id });
 		if (!section) {
 			throw new NotFoundException('Section not found');
 		}
-		task.section = section;
-
-		const beforePostion = LexoRank.parse(moveTaskRequest.beforePosition);
-		const afterPosition = LexoRank.parse(moveTaskRequest.afterPosition);
-		task.position = beforePostion.between(afterPosition).toString();
-
-		await this.taskRepository.save(task);
-		return new MoveTaskResponse(task);
+		return section;
 	}
 }