一文讲清!什么是bug缺陷管理系统?有哪些功能?

// 缺陷实体模型定义
public class Bug
{
    public int Id { get; set; }
    public string Title { get; set; }
    public string Description { get; set; }
    public BugSeverity Severity { get; set; }
    public BugPriority Priority { get; set; }
    public BugStatus Status { get; set; }
    public string StepsToReproduce { get; set; }
    public string Environment { get; set; }
    public int ReporterId { get; set; }
    public int? AssigneeId { get; set; }
    public DateTime CreatedDate { get; set; }
    public DateTime? UpdatedDate { get; set; }
    public int ProjectId { get; set; }
    
    // 导航属性
    public virtual Project Project { get; set; }
    public virtual User Reporter { get; set; }
    public virtual User Assignee { get; set; }
    public virtual ICollection Attachments { get; set; }
    public virtual ICollection Comments { get; set; }
}

// 缺陷状态枚举
public enum BugStatus
{
    New = 1,
    Assigned = 2,
    InProgress = 3,
    Resolved = 4,
    Closed = 5,
    Reopened = 6
}

// 缺陷状态管理组件
class BugStatusManager {
  constructor() {
    this.statusTransitions = new Map([
      ['new', ['assigned', 'closed']],
      ['assigned', ['in_progress', 'new']],
      ['in_progress', ['resolved', 'assigned']],
      ['resolved', ['closed', 'reopened']],
      ['closed', ['reopened']],
      ['reopened', ['assigned', 'in_progress']]
    ]);
  }

  // 验证状态转换是否有效
  isValidTransition(currentStatus, targetStatus) {
    const allowedTransitions = this.statusTransitions.get(currentStatus);
    return allowedTransitions && allowedTransitions.includes(targetStatus);
  }

  // 更新缺陷状态
  async updateBugStatus(bugId, newStatus, userId) {
    const bug = await this.getBugById(bugId);
    
    if (!this.isValidTransition(bug.status, newStatus)) {
      throw new Error(`Invalid status transition from ${bug.status} to ${newStatus}`);
    }
    
    // 更新状态并记录变更历史
    return await this.saveBugStatusChange(bugId, newStatus, userId);
  }
}