import { CloudObject } from '../../lib/ncloud';
import * as Parse from 'parse';

export class Task extends CloudObject {
  protected override parseObject: Parse.Object;
  override id: string | null = null;
  title: string = '';
  content: string = '';
  startTime: string = new Date().toISOString();
  endTime: string = new Date().toISOString();
  completed: boolean = false;
  userId: string | null = null;

  constructor() {
    super('Task');
    this.parseObject = new Parse.Object('Task');
  }

  // 创建新任务
  static async create(data: any): Promise<Task> {
    try {
      const currentUser = Parse.User.current();
      if (!currentUser) {
        throw new Error('No user logged in');
      }

      const task = new Task();
      
      // 设置ACL
      const acl = new Parse.ACL();
      acl.setPublicReadAccess(false);
      acl.setPublicWriteAccess(false);
      acl.setReadAccess(currentUser.id, true);
      acl.setWriteAccess(currentUser.id, true);
      task.parseObject.setACL(acl);

      // 设置任务数据
      task.parseObject.set('title', data.title);
      task.parseObject.set('content', data.content || '');
      task.parseObject.set('startTime', data.startTime || new Date().toISOString());
      task.parseObject.set('endTime', data.endTime || new Date().toISOString());
      task.parseObject.set('completed', data.completed || false);
      task.parseObject.set('userId', currentUser.id);
      task.parseObject.set('user', currentUser);

      // 保存到数据库
      await task.parseObject.save();
      
      // 设置本地数据
      task.id = task.parseObject.id;
      task.title = data.title;
      task.content = data.content || '';
      task.startTime = data.startTime || new Date().toISOString();
      task.endTime = data.endTime || new Date().toISOString();
      task.completed = data.completed || false;
      task.userId = currentUser.id;

      return task;
    } catch (error) {
      console.error('Failed to create task:', error);
      throw error;
    }
  }

  // 获取用户的所有任务
  static async getUserTasks(userId: string): Promise<Task[]> {
    try {
      if (!userId) {
        throw new Error('userId is required');
      }
      
      const query = new Parse.Query('Task');
      query.equalTo('userId', userId);
      query.descending('createdAt');
      
      const results = await query.find();
      return results.map(result => {
        const task = new Task();
        task.parseObject = result;
        task.id = result.id;
        const data = result.toJSON();
        task.title = data['title'];
        task.content = data['content'];
        task.startTime = data['startTime'];
        task.endTime = data['endTime'];
        task.completed = data['completed'];
        task.userId = data['userId'];
        return task;
      });
    } catch (error) {
      console.error('Failed to get user tasks:', error);
      throw error;
    }
  }

  // 保存任务更新
  async saveTask(): Promise<void> {
    try {
      if (!this.id) {
        throw new Error('Task ID is required for update');
      }

      // 更新所有属性到 parseObject
      this.parseObject.set('title', this.title);
      this.parseObject.set('content', this.content);
      this.parseObject.set('startTime', this.startTime);
      this.parseObject.set('endTime', this.endTime);
      this.parseObject.set('completed', this.completed);
      
      await this.parseObject.save();
    } catch (error) {
      console.error('Failed to save task:', error);
      throw error;
    }
  }

  // 删除任务
  async delete(): Promise<void> {
    try {
      if (!this.id) {
        throw new Error('Task ID is required for deletion');
      }
      await this.parseObject.destroy();
    } catch (error) {
      console.error('Failed to delete task:', error);
      throw error;
    }
  }

  // 从 Parse.Object 创建 Task 实例
  static fromParseObject(parseObject: Parse.Object): Task {
    const task = new Task();
    task.parseObject = parseObject;
    task.id = parseObject.id;
    const data = parseObject.toJSON();
    task.title = data['title'];
    task.content = data['content'];
    task.startTime = data['startTime'];
    task.endTime = data['endTime'];
    task.completed = data['completed'];
    task.userId = data['userId'];
    return task;
  }
}