service backend

api/fx/storage/model/rate.go

@@ -0,0 +1,34 @@
+package model
+
+import (
+	"time"
+
+	"github.com/tech/sendico/pkg/db/storable"
+)
+
+// RateSnapshot stores a normalized FX rate observation.
+type RateSnapshot struct {
+	storable.Base `bson:",inline" json:",inline"`
+
+	RateRef     string       `bson:"rateRef" json:"rateRef"`
+	Pair        CurrencyPair `bson:"pair" json:"pair"`
+	Provider    string       `bson:"provider" json:"provider"`
+	Mid         string       `bson:"mid,omitempty" json:"mid,omitempty"`
+	Bid         string       `bson:"bid,omitempty" json:"bid,omitempty"`
+	Ask         string       `bson:"ask,omitempty" json:"ask,omitempty"`
+	SpreadBps   string       `bson:"spreadBps,omitempty" json:"spreadBps,omitempty"`
+	AsOfUnixMs  int64        `bson:"asOfUnixMs" json:"asOfUnixMs"`
+	AsOf        *time.Time   `bson:"asOf,omitempty" json:"asOf,omitempty"`
+	Source      string       `bson:"source,omitempty" json:"source,omitempty"`
+	ProviderRef string       `bson:"providerRef,omitempty" json:"providerRef,omitempty"`
+}
+
+// Collection implements storable.Storable.
+func (*RateSnapshot) Collection() string {
+	return RatesCollection
+}
+
+// AsOfTime converts the stored millisecond timestamp to time.Time.
+func (r *RateSnapshot) AsOfTime() time.Time {
+	return time.UnixMilli(r.AsOfUnixMs)
+}