108 lines
2.7 KiB
Go
108 lines
2.7 KiB
Go
package withdrawal
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import "errors"
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var (
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ErrDependencyUnavailable = errors.New("dependency unavailable")
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ErrWithdrawalNotFound = errors.New("withdrawal not found")
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ErrInvalidAmount = errors.New("invalid amount")
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ErrInsufficientBalance = errors.New("insufficient balance")
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ErrMinWithdrawalAmount = errors.New("amount below minimum withdrawal")
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ErrMaxWithdrawalAmount = errors.New("amount exceeds maximum withdrawal")
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ErrWithdrawalLocked = errors.New("withdrawal status locked")
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ErrUnauthorized = errors.New("unauthorized")
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)
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const (
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MinWithdrawalAmount = 10.0 // 最低提现金额
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MaxWithdrawalAmount = 5000.0 // 单笔最高提现金额
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WithdrawalFeeRate = 0.0 // 手续费率（暂时0%）
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)
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type Service struct {
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repo *Repository
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}
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func NewService(repo *Repository) *Service {
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return &Service{repo: repo}
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}
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// 用户端方法
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func (s *Service) Create(userID uint64, req CreateWithdrawalRequest) (*WithdrawalDTO, error) {
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if s.repo == nil {
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return nil, ErrDependencyUnavailable
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}
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// 验证金额
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if req.Amount < MinWithdrawalAmount {
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return nil, ErrMinWithdrawalAmount
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}
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if req.Amount > MaxWithdrawalAmount {
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return nil, ErrMaxWithdrawalAmount
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}
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return s.repo.Create(userID, req)
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}
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func (s *Service) List(userID uint64, page, pageSize int) (*PaginatedResult, error) {
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if s.repo == nil {
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return nil, ErrDependencyUnavailable
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}
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if page < 1 {
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page = 1
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}
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if pageSize < 1 || pageSize > 100 {
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pageSize = 20
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}
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return s.repo.List(userID, page, pageSize)
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}
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func (s *Service) FindByID(userID, id uint64) (*WithdrawalDTO, error) {
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if s.repo == nil {
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return nil, ErrDependencyUnavailable
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}
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return s.repo.FindByID(userID, id)
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}
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func (s *Service) Cancel(userID, id uint64) error {
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if s.repo == nil {
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return ErrDependencyUnavailable
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}
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return s.repo.Cancel(userID, id)
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}
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// 管理员端方法
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func (s *Service) AdminList(query AdminListQuery) (*AdminPaginatedResult, error) {
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if s.repo == nil {
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return nil, ErrDependencyUnavailable
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}
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if query.Page < 1 {
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query.Page = 1
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}
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if query.Size < 1 || query.Size > 100 {
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query.Size = 20
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}
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return s.repo.AdminList(query)
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}
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func (s *Service) AdminFindByID(id uint64) (*WithdrawalDetailDTO, error) {
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if s.repo == nil {
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return nil, ErrDependencyUnavailable
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}
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return s.repo.AdminFindByID(id)
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}
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func (s *Service) Review(adminID, id uint64, req ReviewWithdrawalRequest) (*WithdrawalDetailDTO, error) {
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if s.repo == nil {
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return nil, ErrDependencyUnavailable
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}
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return s.repo.Review(adminID, id, req)
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}
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func (s *Service) ConfirmPayment(adminID, id uint64, req ConfirmPaymentRequest) (*WithdrawalDetailDTO, error) {
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if s.repo == nil {
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return nil, ErrDependencyUnavailable
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}
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return s.repo.ConfirmPayment(adminID, id, req)
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}
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