feat: 태스크 위치 이동 API 구현

* refactor: LexoRank 알고리즘에 맞춰 생성 API 수정

* feat: 태스크 이동 API 구현

* feat: 태스크의 섹션 간 이동 기능 추가 구현

* fix: 중복 import 코드 삭제

apps/server/package.json

@@ -31,6 +31,7 @@
 		"class-transformer": "^0.5.1",
 		"class-validator": "^0.14.1",
 		"dotenv": "^16.4.5",
+		"lexorank": "^1.0.5",
 		"mysql2": "^3.11.4",
 		"passport": "^0.7.0",
 		"passport-jwt": "^4.0.1",

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

@@ -2,6 +2,7 @@ import { Body, Controller, 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';
+import { MoveTaskRequest } from '../dto/move-task-request.dto';
 
 @Controller('task')
 export class TaskController {
@@ -12,8 +13,13 @@ export class TaskController {
 		return this.taskService.create(createTaskRequest);
 	}
 
-	@Patch(':id')
+	@Patch(':id/status')
 	update(@Param('id') id: number, @Body() updateTaskRequest: UpdateTaskRequest) {
 		return this.taskService.update(id, updateTaskRequest);
 	}
+
+	@Patch(':id/position')
+	move(@Param('id') id: number, @Body() moveTaskRequest: MoveTaskRequest) {
+		return this.taskService.move(id, moveTaskRequest);
+	}
 }

apps/server/src/task/domain/task.entity.ts

@@ -13,7 +13,7 @@ export class Task {
 	description: string;
 
 	@Column()
-	position: number;
+	position: string;
 
 	@ManyToOne(() => Section)
 	@JoinColumn({ name: 'section_id' })

apps/server/src/task/dto/create-task-request.dto.ts

@@ -1,5 +1,3 @@
 export class CreateTaskRequest {
-	position: number;
-
-	sectionId: number;
+	lastTaskPosition: string;
 }

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

@@ -3,7 +3,10 @@ import { Task } from '../domain/task.entity';
 export class CreateTaskResponse {
 	constructor(task: Task) {
 		this.id = task.id;
+		this.position = task.position;
 	}
 
 	id: number;
+
+	position: string;
 }

apps/server/src/task/dto/move-task-request.dto.ts

@@ -0,0 +1,7 @@
+export class MoveTaskRequest {
+	sectionId: number;
+
+	beforePosition: string;
+
+	afterPosition: string;
+}

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

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

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

@@ -17,5 +17,5 @@ export class UpdateTaskResponse {
 
 	sectionId: number;
 
-	position: number;
+	position: string;
 }

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

@@ -1,12 +1,15 @@
 import { Injectable, NotFoundException } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
 import { Repository } from 'typeorm';
+import { LexoRank } from 'lexorank';
 import { Task } from '../domain/task.entity';
 import { CreateTaskRequest } from '../dto/create-task-request.dto';
 import { CreateTaskResponse } from '../dto/create-task-response.dto';
 import { Section } from '../domain/section.entity';
 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';
 
 @Injectable()
 export class TaskService {
@@ -18,14 +21,12 @@ export class TaskService {
 	) {}
 
 	async create(createTaskRequest: CreateTaskRequest) {
-		const section = await this.sectionRepository.findOneBy({ id: createTaskRequest.sectionId });
-		if (!section) {
-			throw new NotFoundException('Section not found');
-		}
+		const position: string = createTaskRequest.lastTaskPosition
+			? LexoRank.parse(createTaskRequest.lastTaskPosition).genNext().toString()
+			: LexoRank.min().toString();
 
 		const task = await this.taskRepository.save({
-			position: createTaskRequest.position,
-			section,
+			position,
 		});
 		return new CreateTaskResponse(task);
 	}
@@ -48,4 +49,24 @@ export class TaskService {
 		await this.taskRepository.save(task);
 		return new UpdateTaskResponse(task);
 	}
+
+	async move(id: number, moveTaskRequest: MoveTaskRequest) {
+		const task = await this.taskRepository.findOneBy({ id });
+		if (!task) {
+			throw new NotFoundException('Task not found');
+		}
+
+		const section = await this.sectionRepository.findOneBy({ id: moveTaskRequest.sectionId });
+		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);
+	}
 }