505 lines
13 KiB
Go
505 lines
13 KiB
Go
package withdrawal
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import (
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"crypto/rand"
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"encoding/hex"
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"encoding/json"
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"errors"
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"fmt"
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"time"
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"hfb_sys/backend/internal/model"
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"hfb_sys/backend/internal/modules/wallet"
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"hfb_sys/backend/pkg/crypto"
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"gorm.io/gorm"
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)
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type Repository struct {
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db *gorm.DB
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walletRepo *wallet.Repository
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}
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func NewRepository(db *gorm.DB, walletRepo *wallet.Repository) *Repository {
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return &Repository{
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db: db,
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walletRepo: walletRepo,
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}
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}
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// 用户创建提现申请
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func (r *Repository) Create(userID uint64, req CreateWithdrawalRequest) (*WithdrawalDTO, error) {
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// 验证收款账号
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var paymentAccount model.UserPaymentAccount
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if err := r.db.Where("id = ? AND user_id = ? AND status = ?", req.PaymentAccountID, userID, "active").
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First(&paymentAccount).Error; err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, errors.New("payment account not found")
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}
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return nil, err
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}
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// 计算手续费和实际到账金额（分）
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feeCent := int64(float64(req.AmountCent) * WithdrawalFeeRate)
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actualAmountCent := req.AmountCent - feeCent
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// 生成提现单号
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withdrawNo, err := generateWithdrawNo()
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if err != nil {
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return nil, err
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}
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// 解密账号（用于存储快照）
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decryptedNo, err := r.decryptAccountNo(paymentAccount.AccountNo)
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if err != nil {
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decryptedNo = paymentAccount.AccountNo
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}
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withdrawal := model.WithdrawalRequest{
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WithdrawNo: withdrawNo,
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UserID: userID,
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AmountCent: req.AmountCent,
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FeeCent: feeCent,
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ActualAmountCent: actualAmountCent,
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PaymentAccountID: &req.PaymentAccountID,
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AccountType: paymentAccount.AccountType,
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AccountName: paymentAccount.AccountName,
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AccountNo: maskAccountNo(decryptedNo, paymentAccount.AccountType),
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BankName: paymentAccount.BankName,
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BankBranch: paymentAccount.BankBranch,
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Status: "pending",
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}
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// 事务处理
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err = r.db.Transaction(func(tx *gorm.DB) error {
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// 创建提现申请
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if err := tx.Create(&withdrawal).Error; err != nil {
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return err
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}
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// 冻结用户余额
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if err := wallet.AppendEntries(tx, wallet.Entry{
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UserID: userID,
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Direction: "out",
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AmountCent: req.AmountCent,
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BalanceType: "available",
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BizType: "withdraw_freeze",
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BizNo: withdrawNo,
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Remark: "提现冻结",
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}, wallet.Entry{
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UserID: userID,
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Direction: "in",
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AmountCent: req.AmountCent,
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BalanceType: "frozen",
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BizType: "withdraw_freeze",
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BizNo: withdrawNo,
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Remark: "提现冻结",
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}); err != nil {
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return err
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}
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return nil
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})
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if err != nil {
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return nil, err
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}
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return r.FindByID(userID, withdrawal.ID)
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}
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// 用户查询提现列表
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func (r *Repository) List(userID uint64, page, pageSize int) (*PaginatedResult, error) {
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var total int64
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if err := r.db.Model(&model.WithdrawalRequest{}).
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Where("user_id = ?", userID).
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Count(&total).Error; err != nil {
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return nil, err
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}
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offset := (page - 1) * pageSize
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var withdrawals []model.WithdrawalRequest
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if err := r.db.Where("user_id = ?", userID).
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Order("created_at DESC").
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Offset(offset).Limit(pageSize).
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Find(&withdrawals).Error; err != nil {
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return nil, err
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}
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items := make([]WithdrawalDTO, 0, len(withdrawals))
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for _, w := range withdrawals {
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items = append(items, toDTO(w))
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}
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return &PaginatedResult{
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Items: items,
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Total: total,
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Page: page,
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PageSize: pageSize,
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}, nil
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}
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// 用户查询提现详情
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func (r *Repository) FindByID(userID, id uint64) (*WithdrawalDTO, error) {
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var withdrawal model.WithdrawalRequest
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if err := r.db.Where("id = ? AND user_id = ?", id, userID).
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First(&withdrawal).Error; err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, ErrWithdrawalNotFound
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}
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return nil, err
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}
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dto := toDTO(withdrawal)
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return &dto, nil
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}
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// 用户取消提现
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func (r *Repository) Cancel(userID, id uint64) error {
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var withdrawal model.WithdrawalRequest
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if err := r.db.Where("id = ? AND user_id = ?", id, userID).
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First(&withdrawal).Error; err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return ErrWithdrawalNotFound
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}
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return err
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}
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// 只有待审核状态可以取消
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if withdrawal.Status != "pending" {
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return ErrWithdrawalLocked
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}
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return r.db.Transaction(func(tx *gorm.DB) error {
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// 更新状态
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if err := tx.Model(&withdrawal).Update("status", "cancelled").Error; err != nil {
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return err
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}
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// 解冻余额
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if err := wallet.AppendEntries(tx, wallet.Entry{
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UserID: userID,
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Direction: "out",
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AmountCent: withdrawal.AmountCent,
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BalanceType: "frozen",
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BizType: "withdraw_cancel",
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BizNo: withdrawal.WithdrawNo,
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Remark: "用户取消提现",
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}, wallet.Entry{
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UserID: userID,
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Direction: "in",
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AmountCent: withdrawal.AmountCent,
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BalanceType: "available",
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BizType: "withdraw_cancel",
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BizNo: withdrawal.WithdrawNo,
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Remark: "用户取消提现",
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}); err != nil {
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return err
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}
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return nil
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})
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}
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// 管理员查询提现列表
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func (r *Repository) AdminList(query AdminListQuery) (*AdminPaginatedResult, error) {
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db := r.db.Model(&model.WithdrawalRequest{})
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if query.Status != "" {
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db = db.Where("status = ?", query.Status)
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}
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if query.UserID > 0 {
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db = db.Where("user_id = ?", query.UserID)
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}
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var total int64
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if err := db.Count(&total).Error; err != nil {
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return nil, err
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}
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offset := (query.Page - 1) * query.Size
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var withdrawals []model.WithdrawalRequest
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if err := db.Order("created_at DESC").
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Offset(offset).Limit(query.Size).
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Find(&withdrawals).Error; err != nil {
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return nil, err
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}
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items := make([]WithdrawalDetailDTO, 0, len(withdrawals))
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for _, w := range withdrawals {
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dto, err := r.toDetailDTO(w)
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if err != nil {
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continue
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}
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items = append(items, *dto)
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}
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return &AdminPaginatedResult{
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Items: items,
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Total: total,
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Page: query.Page,
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PageSize: query.Size,
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}, nil
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}
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// 管理员查询提现详情
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func (r *Repository) AdminFindByID(id uint64) (*WithdrawalDetailDTO, error) {
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var withdrawal model.WithdrawalRequest
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if err := r.db.First(&withdrawal, id).Error; err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, ErrWithdrawalNotFound
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}
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return nil, err
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}
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return r.toDetailDTO(withdrawal)
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}
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// 管理员审核提现
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func (r *Repository) Review(adminID, id uint64, req ReviewWithdrawalRequest) (*WithdrawalDetailDTO, error) {
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var withdrawal model.WithdrawalRequest
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if err := r.db.First(&withdrawal, id).Error; err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, ErrWithdrawalNotFound
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}
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return nil, err
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}
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// 只有待审核状态可以审核
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if withdrawal.Status != "pending" {
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return nil, ErrWithdrawalLocked
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}
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now := time.Now()
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if req.Approved {
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// 审核通过，进入处理中状态
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withdrawal.Status = "processing"
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} else {
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// 审核拒绝，解冻余额
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withdrawal.Status = "rejected"
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}
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withdrawal.ReviewedBy = &adminID
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withdrawal.ReviewedAt = &now
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withdrawal.ReviewRemark = req.Remark
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err := r.db.Transaction(func(tx *gorm.DB) error {
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if err := tx.Save(&withdrawal).Error; err != nil {
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return err
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}
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// 如果拒绝，解冻余额
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if !req.Approved {
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if err := wallet.AppendEntries(tx, wallet.Entry{
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UserID: withdrawal.UserID,
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Direction: "out",
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AmountCent: withdrawal.AmountCent,
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BalanceType: "frozen",
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BizType: "withdraw_reject",
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BizNo: withdrawal.WithdrawNo,
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Remark: fmt.Sprintf("提现被拒绝: %s", req.Remark),
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}, wallet.Entry{
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UserID: withdrawal.UserID,
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Direction: "in",
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AmountCent: withdrawal.AmountCent,
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BalanceType: "available",
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BizType: "withdraw_reject",
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BizNo: withdrawal.WithdrawNo,
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Remark: fmt.Sprintf("提现被拒绝: %s", req.Remark),
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}); err != nil {
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return err
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}
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}
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return nil
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})
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if err != nil {
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return nil, err
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}
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return r.AdminFindByID(id)
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}
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// 管理员确认打款
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func (r *Repository) ConfirmPayment(adminID, id uint64, req ConfirmPaymentRequest) (*WithdrawalDetailDTO, error) {
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var withdrawal model.WithdrawalRequest
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if err := r.db.First(&withdrawal, id).Error; err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, ErrWithdrawalNotFound
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}
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return nil, err
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}
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// 只有处理中状态可以确认打款
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if withdrawal.Status != "processing" {
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return nil, ErrWithdrawalLocked
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}
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now := time.Now()
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withdrawal.Status = "completed"
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withdrawal.PaidBy = &adminID
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withdrawal.PaidAt = &now
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withdrawal.PaymentProofURL = req.PaymentProofURL
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withdrawal.PaymentRemark = req.Remark
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err := r.db.Transaction(func(tx *gorm.DB) error {
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if err := tx.Save(&withdrawal).Error; err != nil {
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return err
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}
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// 扣除冻结余额
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if err := wallet.AppendEntries(tx, wallet.Entry{
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UserID: withdrawal.UserID,
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Direction: "out",
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AmountCent: withdrawal.AmountCent,
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BalanceType: "frozen",
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BizType: "withdraw_complete",
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BizNo: withdrawal.WithdrawNo,
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Remark: "提现完成",
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}); err != nil {
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return err
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}
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return nil
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})
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if err != nil {
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return nil, err
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}
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return r.AdminFindByID(id)
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}
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// 转换为用户DTO
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func toDTO(w model.WithdrawalRequest) WithdrawalDTO {
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return WithdrawalDTO{
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ID: w.ID,
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WithdrawNo: w.WithdrawNo,
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UserID: w.UserID,
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AmountCent: w.AmountCent,
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FeeCent: w.FeeCent,
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ActualAmountCent: w.ActualAmountCent,
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AccountType: w.AccountType,
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AccountName: w.AccountName,
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AccountNo: w.AccountNo,
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BankName: w.BankName,
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Status: w.Status,
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ReviewRemark: w.ReviewRemark,
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CreatedAt: w.CreatedAt,
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UpdatedAt: w.UpdatedAt,
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ReviewedAt: w.ReviewedAt,
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PaidAt: w.PaidAt,
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}
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}
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// 转换为管理员详细DTO
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func (r *Repository) toDetailDTO(w model.WithdrawalRequest) (*WithdrawalDetailDTO, error) {
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// 查询用户信息
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var user model.User
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r.db.Select("nickname, phone").First(&user, w.UserID)
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// 查询审核人信息
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var reviewedByName string
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if w.ReviewedBy != nil {
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var admin model.AdminUser
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if err := r.db.Select("nickname").First(&admin, *w.ReviewedBy).Error; err == nil {
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reviewedByName = admin.Nickname
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}
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}
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// 查询打款人信息
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var paidByName string
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if w.PaidBy != nil {
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var admin model.AdminUser
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if err := r.db.Select("nickname").First(&admin, *w.PaidBy).Error; err == nil {
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paidByName = admin.Nickname
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}
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}
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// 获取完整账号和收款二维码（管理员可见）
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fullAccountNo := w.AccountNo
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var certificateURLs []string
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if w.PaymentAccountID != nil {
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var paymentAccount model.UserPaymentAccount
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if err := r.db.First(&paymentAccount, *w.PaymentAccountID).Error; err == nil {
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// 解密账号
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decrypted, err := crypto.Decrypt(paymentAccount.AccountNo)
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if err == nil {
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fullAccountNo = decrypted
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}
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// 解析收款二维码
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if paymentAccount.CertificateURLs != nil {
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json.Unmarshal(paymentAccount.CertificateURLs, &certificateURLs)
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}
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}
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}
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return &WithdrawalDetailDTO{
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ID: w.ID,
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WithdrawNo: w.WithdrawNo,
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UserID: w.UserID,
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UserNickname: user.Nickname,
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UserPhone: user.Phone,
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AmountCent: w.AmountCent,
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FeeCent: w.FeeCent,
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ActualAmountCent: w.ActualAmountCent,
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PaymentAccountID: w.PaymentAccountID,
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AccountType: w.AccountType,
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AccountName: w.AccountName,
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AccountNo: fullAccountNo,
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BankName: w.BankName,
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BankBranch: w.BankBranch,
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CertificateURLs: certificateURLs,
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Status: w.Status,
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ReviewedBy: w.ReviewedBy,
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ReviewedByName: reviewedByName,
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ReviewedAt: w.ReviewedAt,
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ReviewRemark: w.ReviewRemark,
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PaidBy: w.PaidBy,
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PaidByName: paidByName,
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PaidAt: w.PaidAt,
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PaymentProofURL: w.PaymentProofURL,
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PaymentRemark: w.PaymentRemark,
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CreatedAt: w.CreatedAt,
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UpdatedAt: w.UpdatedAt,
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}, nil
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}
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// 生成提现单号
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func generateWithdrawNo() (string, error) {
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buf := make([]byte, 8)
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if _, err := rand.Read(buf); err != nil {
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return "", err
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}
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return fmt.Sprintf("WD%d%s", time.Now().Unix(), hex.EncodeToString(buf)[:8]), nil
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}
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// 账号脱敏
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func maskAccountNo(accountNo, accountType string) string {
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length := len(accountNo)
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if length <= 4 {
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return accountNo
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}
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switch accountType {
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case "alipay", "wechat":
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if length == 11 {
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return accountNo[:3] + "****" + accountNo[7:]
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}
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return accountNo[:2] + "****" + accountNo[length-2:]
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case "bank":
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if length > 8 {
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return accountNo[:4] + "****" + accountNo[length-4:]
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}
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return accountNo[:2] + "****" + accountNo[length-2:]
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}
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return accountNo
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}
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// 简化的解密函数（实际应该调用 paymentaccount 模块的解密）
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func (r *Repository) decryptAccountNo(encrypted string) (string, error) {
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// 这里应该调用 paymentaccount 包的解密函数
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// 为了简化，直接返回（实际使用时需要正确实现）
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return encrypted, nil
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}
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