销售合同管理系统是什么活?全面解析销售合同管理的方方面面

// 合同实体类定义
public class SalesContract
{
    public int Id { get; set; }
    public string ContractNumber { get; set; }
    public string CustomerName { get; set; }
    public decimal ContractAmount { get; set; }
    public DateTime SignDate { get; set; }
    public DateTime EffectiveDate { get; set; }
    public DateTime ExpiryDate { get; set; }
    public ContractStatus Status { get; set; }
    public string CreatedBy { get; set; }
    public DateTime CreatedDate { get; set; }
    
    // 导航属性
    public virtual ICollection Items { get; set; }
    public virtual ICollection ApprovalRecords { get; set; }
}

// 合同状态枚举
public enum ContractStatus
{
    Draft = 0,
    UnderReview = 1,
    Approved = 2,
    Signed = 3,
    Executing = 4,
    Completed = 5,
    Terminated = 6
}

// 合同审批工作流处理
class ContractWorkflow {
  constructor(contract) {
    this.contract = contract;
    this.currentStep = 0;
    this.approvalSteps = this.getApprovalSteps();
  }
  
  // 根据合同金额确定审批流程
  getApprovalSteps() {
    const amount = this.contract.contractAmount;
    
    if (amount <= 50000) {
      return ['salesManager'];
    } else if (amount <= 200000) {
      return ['salesManager', 'financeManager'];
    } else {
      return ['salesManager', 'financeManager', 'generalManager'];
    }
  }
  
  // 提交到下一审批环节
  async submitToNextStep(approver) {
    if (this.currentStep < this.approvalSteps.length) {
      const nextApproverRole = this.approvalSteps[this.currentStep];
      await this.notifyApprover(nextApproverRole, approver);
      this.currentStep++;
      return true;
    }
    return false;
  }
  
  // 通知审批人
  async notifyApprover(approverRole, currentUser) {
    // 发送通知逻辑
    console.log(`合同 ${this.contract.contractNumber} 已提交给 ${approverRole} 审批`);
  }
}