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Multi-tenant commerce and billing: orders, subscriptions, invoices, plans, usage metering and a credit ledger. One Go binary. MIT OR Apache-2.0. Claude-Session: https://claude.ai/code/session_01SAtaDFm8VDiWrhYHNNtxMw
104 lines
3.2 KiB
Go
104 lines
3.2 KiB
Go
// Package exchange is the order-exchange domain (Medusa v2 core parity): an
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// exchange pairs a return of inbound items on an order with outbound
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// replacement items. The net money movement is DifferenceDueCents — positive
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// when the customer owes the difference, negative when a refund is due.
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package exchange
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import (
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"github.com/hanzoai/commerce/datastore"
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"github.com/hanzoai/commerce/models/mixin"
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"github.com/hanzoai/commerce/models/types/currency"
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"github.com/hanzoai/commerce/util/json"
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"github.com/hanzoai/orm"
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. "github.com/hanzoai/commerce/types"
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)
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func init() { orm.Register[Exchange]("exchange") }
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// Exchange lifecycle states.
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const (
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StatusRequested = "requested"
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StatusConfirmed = "confirmed"
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StatusCanceled = "canceled"
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)
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// ExchangeItem is a single line of an exchange, referencing an order line item
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// by ItemId with the quantity being returned (inbound) or shipped (outbound).
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type ExchangeItem struct {
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ItemId string `json:"itemId"`
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Quantity int `json:"quantity"`
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}
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// Exchange links a return of InboundItems on an order to OutboundItems shipped
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// in their place. DifferenceDueCents is the net owed (>0) or refundable (<0)
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// amount. An exchange is open until it is confirmed or canceled.
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type Exchange struct {
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mixin.Model[Exchange]
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OrderId string `json:"orderId"`
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// ReturnId links the return that carries the inbound items.
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ReturnId string `json:"returnId,omitempty"`
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// DifferenceDueCents > 0 means the customer owes; < 0 means a refund is due.
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DifferenceDueCents currency.Cents `json:"differenceDueCents"`
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CurrencyCode currency.Type `json:"currencyCode" orm:"default:usd"`
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Status string `json:"status" orm:"default:requested"`
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NoNotification bool `json:"noNotification"`
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InboundItems []ExchangeItem `json:"inboundItems,omitempty" datastore:"-"`
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InboundItems_ string `json:"-" datastore:",noindex"`
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OutboundItems []ExchangeItem `json:"outboundItems,omitempty" datastore:"-"`
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OutboundItems_ string `json:"-" datastore:",noindex"`
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Metadata Map `json:"metadata,omitempty" datastore:"-"`
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Metadata_ string `json:"-" datastore:",noindex"`
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}
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func (e *Exchange) Load(ps []datastore.Property) (err error) {
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if err = datastore.LoadStruct(e, ps); err != nil {
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return err
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}
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if len(e.InboundItems_) > 0 {
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if err = json.DecodeBytes([]byte(e.InboundItems_), &e.InboundItems); err != nil {
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return err
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}
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}
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if len(e.OutboundItems_) > 0 {
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if err = json.DecodeBytes([]byte(e.OutboundItems_), &e.OutboundItems); err != nil {
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return err
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}
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}
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if len(e.Metadata_) > 0 {
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err = json.DecodeBytes([]byte(e.Metadata_), &e.Metadata)
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}
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return err
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}
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func (e *Exchange) Save() ([]datastore.Property, error) {
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e.InboundItems_ = string(json.EncodeBytes(&e.InboundItems))
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e.OutboundItems_ = string(json.EncodeBytes(&e.OutboundItems))
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e.Metadata_ = string(json.EncodeBytes(&e.Metadata))
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return datastore.SaveStruct(e)
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}
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// IsOpen reports whether the exchange is still awaiting confirmation or
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// cancellation.
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func (e *Exchange) IsOpen() bool {
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return e.Status == StatusRequested
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}
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func New(db *datastore.Datastore) *Exchange {
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e := new(Exchange)
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e.Init(db)
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return e
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}
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func Query(db *datastore.Datastore) datastore.Query {
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return db.Query("exchange")
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}
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