任务管理系统是什么意思?你知道它的全解析吗?

// 任务实体类定义
public class TaskItem
{
    public int Id { get; set; }
    public string Title { get; set; }
    public string Description { get; set; }
    public TaskPriority Priority { get; set; }
    public DateTime DueDate { get; set; }
    public TaskStatus Status { get; set; }
    public int AssigneeId { get; set; }
    public User Assignee { get; set; }
    public DateTime CreatedAt { get; set; }
    public DateTime UpdatedAt { get; set; }
}

// 任务状态枚举
public enum TaskStatus
{
    Pending,
    InProgress,
    Completed,
    Cancelled
}

// 任务优先级枚举
public enum TaskPriority
{
    Low,
    Medium,
    High,
    Urgent
}

// 前端任务管理组件示例
class TaskManager {
  constructor() {
    this.tasks = [];
    this.filters = {
      status: 'all',
      priority: 'all',
      assignee: 'all'
    };
  }
  
  // 创建新任务
  createTask(taskData) {
    const newTask = {
      id: this.generateId(),
      ...taskData,
      createdAt: new Date(),
      updatedAt: new Date()
    };
    this.tasks.push(newTask);
    this.saveToLocalStorage();
    return newTask;
  }
  
  // 过滤任务列表
  filterTasks() {
    return this.tasks.filter(task => {
      const statusMatch = this.filters.status === 'all' || 
                         task.status === this.filters.status;
      const priorityMatch = this.filters.priority === 'all' || 
                           task.priority === this.filters.priority;
      const assigneeMatch = this.filters.assignee === 'all' || 
                           task.assigneeId === this.filters.assignee;
      
      return statusMatch && priorityMatch && assigneeMatch;
    });
  }
  
  // 生成唯一ID
  generateId() {
    return Date.now().toString(36) + Math.random().toString(36).substr(2);
  }
  
  // 本地存储
  saveToLocalStorage() {
    localStorage.setItem('tasks', JSON.stringify(this.tasks));
  }
}