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feat: 新增退款管理模块 — 完整的退款审批流程、佣金回扣和资产重置
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新增退款申请全生命周期管理：创建/列表/详情/审批通过/拒绝/退回/重新提交
审批通过后异步执行佣金全额回扣（扣减各代理佣金钱包）和资产重置（套餐失效+停机+世代重置）
新增 tb_refund_request 表（迁移 000093）、RefundRequest Model、8 个 DTO
新增 Store/Service/Handler/路由注册，仅平台用户可访问
This commit is contained in:
huang
2026-03-28 17:57:52 +08:00
parent 5e64c64ce3
commit 02b10f87cf
18 changed files with 1345 additions and 26 deletions
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84
internal/model/dto/refund_dto.go Normal file
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package dto
// CreateRefundRequest 创建退款申请请求
type CreateRefundRequest struct {
OrderID uint `json:"order_id" validate:"required" required:"true" description:"关联订单ID"`
ActualReceivedAmount int64 `json:"actual_received_amount" validate:"required,min=1" required:"true" minimum:"1" description:"实收金额（分）"`
RequestedRefundAmount int64 `json:"requested_refund_amount" validate:"required,min=1" required:"true" minimum:"1" description:"申请退款金额（分）"`
RefundReason string `json:"refund_reason" validate:"omitempty,max=1000" maxLength:"1000" description:"退款原因"`
PackageUsageID *uint `json:"package_usage_id" validate:"omitempty" description:"关联套餐使用记录ID（可选）"`
}
// RefundIDRequest 退款申请ID路径参数
type RefundIDRequest struct {
ID uint `path:"id" description:"退款申请ID" required:"true"`
}
// RejectRefundRequest 拒绝退款申请请求
type RejectRefundRequest struct {
ID uint `json:"-" params:"id" path:"id" validate:"required" description:"退款申请ID"`
RejectReason string `json:"reject_reason" validate:"required,max=500" required:"true" maxLength:"500" description:"拒绝原因（必填）"`
}
// ResubmitRefundRequest 重新提交退款申请请求
// 退款单被退回后，可修改部分字段后重新提交
type ResubmitRefundRequest struct {
ID uint `json:"-" params:"id" path:"id" validate:"required" description:"退款申请ID"`
ActualReceivedAmount *int64 `json:"actual_received_amount" validate:"omitempty,min=1" minimum:"1" description:"实收金额（分）"`
RequestedRefundAmount *int64 `json:"requested_refund_amount" validate:"omitempty,min=1" minimum:"1" description:"申请退款金额（分）"`
RefundReason *string `json:"refund_reason" validate:"omitempty,max=1000" maxLength:"1000" description:"退款原因"`
}
// ApproveRefundRequest 审批通过退款申请请求
type ApproveRefundRequest struct {
ID uint `json:"-" params:"id" path:"id" validate:"required" description:"退款申请ID"`
ApprovedRefundAmount *int64 `json:"approved_refund_amount" validate:"omitempty,min=1" minimum:"1" description:"审批实际退款金额（分），不填则使用申请金额"`
Remark string `json:"remark" validate:"omitempty,max=500" maxLength:"500" description:"审批备注"`
}
// ReturnRefundRequest 退回退款申请请求
type ReturnRefundRequest struct {
ID uint `json:"-" params:"id" path:"id" validate:"required" description:"退款申请ID"`
Remark string `json:"remark" validate:"omitempty,max=500" maxLength:"500" description:"退回备注"`
}
// RefundListRequest 退款申请列表查询请求
type RefundListRequest struct {
Page int `json:"page" query:"page" validate:"omitempty,min=1" minimum:"1" description:"页码（默认1）"`
PageSize int `json:"page_size" query:"page_size" validate:"omitempty,min=1,max=100" minimum:"1" maximum:"100" description:"每页数量（默认20，最大100）"`
Status *int `json:"status" query:"status" validate:"omitempty,min=1,max=4" minimum:"1" maximum:"4" description:"状态 (1:待审批, 2:已通过, 3:已拒绝, 4:已退回)"`
OrderID *uint `json:"order_id" query:"order_id" validate:"omitempty" description:"关联订单ID"`
ShopID *uint `json:"shop_id" query:"shop_id" validate:"omitempty" description:"店铺ID"`
}
// RefundResponse 退款申请详情响应
type RefundResponse struct {
ID uint `json:"id" description:"退款申请ID"`
RefundNo string `json:"refund_no" description:"退款单号"`
OrderID uint `json:"order_id" description:"关联订单ID"`
PackageUsageID *uint `json:"package_usage_id,omitempty" description:"关联套餐使用记录ID"`
ShopID *uint `json:"shop_id,omitempty" description:"店铺ID"`
ActualReceivedAmount int64 `json:"actual_received_amount" description:"实收金额（分）"`
RequestedRefundAmount int64 `json:"requested_refund_amount" description:"申请退款金额（分）"`
ApprovedRefundAmount *int64 `json:"approved_refund_amount,omitempty" description:"审批实际退款金额（分）"`
RefundReason string `json:"refund_reason" description:"退款原因"`
Status int `json:"status" description:"状态 (1:待审批, 2:已通过, 3:已拒绝, 4:已退回)"`
ProcessorID *uint `json:"processor_id,omitempty" description:"审批人ID"`
ProcessedAt string `json:"processed_at,omitempty" description:"审批时间"`
RejectReason string `json:"reject_reason,omitempty" description:"拒绝原因"`
Remark string `json:"remark,omitempty" description:"审批备注"`
CommissionDeducted bool `json:"commission_deducted" description:"佣金是否已回扣"`
AssetReset bool `json:"asset_reset" description:"资产是否已重置"`
Creator uint `json:"creator" description:"创建人ID"`
Updater uint `json:"updater" description:"更新人ID"`
CreatedAt string `json:"created_at" description:"创建时间"`
UpdatedAt string `json:"updated_at" description:"更新时间"`
}
// RefundListResponse 退款申请列表分页响应
type RefundListResponse struct {
Items []RefundResponse `json:"items" description:"退款申请列表"`
Total int64 `json:"total" description:"总记录数"`
Page int `json:"page" description:"当前页码"`
Size int `json:"size" description:"每页数量"`
}

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internal/model/refund.go Normal file
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package model
import (
"time"
"gorm.io/gorm"
)
// RefundRequest 退款申请模型
// 记录退款申请的完整生命周期，包含退款单号、关联订单、金额、状态流转、审批信息等
// 状态流转：1(待审批) → 2(已通过)/3(已拒绝)/4(已退回)，4(已退回) → 1(待审批)
type RefundRequest struct {
gorm.Model
BaseModel `gorm:"embedded"`
// 退款单基础信息
RefundNo string `gorm:"column:refund_no;type:varchar(50);uniqueIndex:idx_refund_request_refund_no,where:deleted_at IS NULL;not null;comment:退款单号（RF+日期时间+6位随机数）" json:"refund_no"`
OrderID uint `gorm:"column:order_id;index;not null;comment:关联订单ID" json:"order_id"`
PackageUsageID *uint `gorm:"column:package_usage_id;comment:关联套餐使用记录ID（可选）" json:"package_usage_id,omitempty"`
ShopID *uint `gorm:"column:shop_id;index;comment:店铺ID（从订单获取，用于数据权限过滤）" json:"shop_id,omitempty"`
// 金额信息
ActualReceivedAmount int64 `gorm:"column:actual_received_amount;type:bigint;not null;comment:实收金额（分）" json:"actual_received_amount"`
RequestedRefundAmount int64 `gorm:"column:requested_refund_amount;type:bigint;not null;comment:申请退款金额（分）" json:"requested_refund_amount"`
ApprovedRefundAmount *int64 `gorm:"column:approved_refund_amount;type:bigint;comment:审批实际退款金额（分）" json:"approved_refund_amount,omitempty"`
// 退款原因和状态
RefundReason string `gorm:"column:refund_reason;type:text;comment:退款原因" json:"refund_reason"`
Status int `gorm:"column:status;type:int;not null;default:1;index;comment:状态 1-待审批 2-已通过 3-已拒绝 4-已退回" json:"status"`
// 审批信息
ProcessorID *uint `gorm:"column:processor_id;comment:审批人ID" json:"processor_id,omitempty"`
ProcessedAt *time.Time `gorm:"column:processed_at;comment:审批时间" json:"processed_at,omitempty"`
RejectReason string `gorm:"column:reject_reason;type:text;comment:拒绝原因" json:"reject_reason,omitempty"`
Remark string `gorm:"column:remark;type:text;comment:审批备注" json:"remark,omitempty"`
// 后处理标记
CommissionDeducted bool `gorm:"column:commission_deducted;not null;default:false;comment:佣金是否已回扣" json:"commission_deducted"`
AssetReset bool `gorm:"column:asset_reset;not null;default:false;comment:资产是否已重置（套餐停用+停机+世代重置）" json:"asset_reset"`
}
// TableName 指定表名
func (RefundRequest) TableName() string {
return "tb_refund_request"
}
// 退款状态常量
const (
RefundStatusPending = 1 // 待审批
RefundStatusApproved = 2 // 已通过
RefundStatusRejected = 3 // 已拒绝
RefundStatusReturned = 4 // 已退回
)