客户退货管理系统的方法与思路

// 退货申请实体类定义
public class ReturnRequest
{
    public int Id { get; set; }
    public string CustomerId { get; set; }
    public string OrderNumber { get; set; }
    public DateTime RequestDate { get; set; }
    public ReturnStatus Status { get; set; }
    public string Reason { get; set; }
    public decimal RefundAmount { get; set; }
}

// 退货状态枚举
public enum ReturnStatus
{
    Pending,
    Approved,
    Rejected,
    Completed
}

// 数据库上下文定义
public class ReturnManagementContext : DbContext
{
    public DbSet ReturnRequests { get; set; }
    public DbSet ReturnItems { get; set; }
    public DbSet ReturnPolicies { get; set; }
    
    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        // 配置实体关系和数据约束
        modelBuilder.Entity()
            .HasMany(r => r.Items)
            .WithOne(i => i.Request);
    }
}

// 前端退货申请提交逻辑
class ReturnRequestService {
    async submitReturnRequest(requestData) {
        try {
            const response = await fetch('/api/returns', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json'
                },
                body: JSON.stringify(requestData)
            });
            
            if (response.ok) {
                return await response.json();
            } else {
                throw new Error('提交失败');
            }
        } catch (error) {
            console.error('退货申请提交错误:', error);
            throw error;
        }
    }
    
    // 状态跟踪功能
    async trackReturnStatus(returnId) {
        const response = await fetch(`/api/returns/${returnId}/status`);
        return await response.json();
    }
}