46 lines
1.4 KiB
Go
46 lines
1.4 KiB
Go
package wallet
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import (
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"context"
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"hyapp/pkg/xerr"
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"hyapp/services/wallet-service/internal/domain/ledger"
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)
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// Repository 隔离账务存储，扣费必须由 repository 保证余额和幂等。
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type Repository interface {
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DebitGift(ctx context.Context, command ledger.DebitGiftCommand) (ledger.Receipt, error)
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}
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// Config 保存钱包底座配置。
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type Config struct {
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Currency string
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IdempotencyTTLSec int64
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}
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// Service 承载钱包账务用例。
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type Service struct {
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cfg Config
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repository Repository
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}
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// New 创建钱包服务。
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func New(cfg Config, repository Repository) *Service {
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return &Service{cfg: cfg, repository: repository}
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}
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// DebitGift 校验送礼扣费命令，并交给 repository 做原子落账和幂等。
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func (s *Service) DebitGift(ctx context.Context, command ledger.DebitGiftCommand) (ledger.Receipt, error) {
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if command.CommandID == "" || command.RoomID == "" || command.SenderUserID <= 0 || command.TargetUserID <= 0 || command.GiftID == "" {
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return ledger.Receipt{}, xerr.New(xerr.InvalidArgument, "billing command is incomplete")
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}
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if command.GiftCount <= 0 || command.GiftUnitValue <= 0 {
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return ledger.Receipt{}, xerr.New(xerr.InvalidArgument, "gift_count and gift_unit_value must be positive")
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}
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if s.repository == nil {
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return ledger.Receipt{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
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}
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return s.repository.DebitGift(ctx, command)
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}
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