智能人事管理系统构建路径：自研、外包还是 SaaS？

// 自研人事系统核心模块示例
public class EmployeeManagementService : IEmployeeService
{
    private readonly IEmployeeRepository _repository;
    
    public EmployeeManagementService(IEmployeeRepository repository)
    {
        _repository = repository;
    }
    
    // 员工信息创建方法
    public async Task CreateEmployeeAsync(EmployeeDto employeeDto)
    {
        // 数据验证逻辑
        if (string.IsNullOrEmpty(employeeDto.Name))
            throw new ArgumentException("员工姓名不能为空");
            
        // 业务逻辑处理
        var employee = new Employee
        {
            Id = Guid.NewGuid(),
            Name = employeeDto.Name,
            Department = employeeDto.Department,
            Position = employeeDto.Position,
            HireDate = DateTime.UtcNow
        };
        
        // 持久化存储
        await _repository.AddAsync(employee);
        return employee;
    }
    
    // 更多业务方法...
}

-- SaaS人事系统数据库设计示例
CREATE TABLE Employees (
    EmployeeID INT PRIMARY KEY IDENTITY(1,1),
    FirstName NVARCHAR(50) NOT NULL,
    LastName NVARCHAR(50) NOT NULL,
    Email NVARCHAR(100) UNIQUE NOT NULL,
    DepartmentID INT FOREIGN KEY REFERENCES Departments(DepartmentID),
    PositionID INT FOREIGN KEY REFERENCES Positions(PositionID),
    HireDate DATE NOT NULL,
    Salary DECIMAL(10,2),
    Status TINYINT DEFAULT 1 -- 1=Active, 0=Inactive
);

CREATE TABLE AttendanceRecords (
    RecordID BIGINT PRIMARY KEY IDENTITY(1,1),
    EmployeeID INT FOREIGN KEY REFERENCES Employees(EmployeeID),
    RecordDate DATE NOT NULL,
    ClockInTime DATETIME2,
    ClockOutTime DATETIME2,
    HoursWorked AS DATEDIFF(MINUTE, ClockInTime, ClockOutTime) / 60.0,
    CreatedDate DATETIME2 DEFAULT GETUTCDATE()
);

-- 创建索引优化查询性能
CREATE INDEX IX_Employees_Department ON Employees(DepartmentID);
CREATE INDEX IX_Attendance_EmployeeDate ON AttendanceRecords(EmployeeID, RecordDate);

// SaaS系统与自研模块API集成示例
class HRSystemIntegration {
  constructor(baseURL, apiKey) {
    this.baseURL = baseURL;
    this.apiKey = apiKey;
  }
  
  // 获取员工基本信息
  async getEmployeeBasicInfo(employeeId) {
    try {
      const response = await fetch(`${this.baseURL}/employees/${employeeId}`, {
        headers: {
          'Authorization': `Bearer ${this.apiKey}`,
          'Content-Type': 'application/json'
        }
      });
      
      if (!response.ok) {
        throw new Error(`API请求失败: ${response.status}`);
      }
      
      return await response.json();
    } catch (error) {
      console.error('获取员工信息失败:', error);
      throw error;
    }
  }
  
  // 更新考勤数据到自研系统
  async updateAttendanceToCustomSystem(attendanceData) {
    // 与自研考勤模块集成
    const response = await fetch('https://internal-system/api/attendance', {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json'
      },
      body: JSON.stringify(attendanceData)
    });
    
    return response.json();
  }
  
  // 更多集成方法...
}

// 使用示例
const integration = new HRSystemIntegration('https://saas-hr-api.com', 'your-api-key');
integration.getEmployeeBasicInfo('12345')
  .then(employee => console.log('员工信息:', employee))
  .catch(error => console.error('错误:', error));