service backend

api/ledger/storage/model/journal_entry.go

@@ -0,0 +1,26 @@
+package model
+
+import (
+	"time"
+
+	"github.com/tech/sendico/pkg/db/storable"
+	"github.com/tech/sendico/pkg/model"
+)
+
+// JournalEntry represents an atomic ledger transaction with multiple posting lines.
+type JournalEntry struct {
+	storable.Base         `bson:",inline" json:",inline"`
+	model.PermissionBound `bson:",inline" json:",inline"`
+
+	IdempotencyKey string            `bson:"idempotencyKey" json:"idempotencyKey"` // unique key for deduplication
+	EventTime      time.Time         `bson:"eventTime" json:"eventTime"`           // business event timestamp
+	EntryType      EntryType         `bson:"entryType" json:"entryType"`           // credit, debit, transfer, fx, fee, adjust, reverse
+	Description    string            `bson:"description" json:"description"`
+	Metadata       map[string]string `bson:"metadata,omitempty" json:"metadata,omitempty"`
+	Version        int64             `bson:"version" json:"version"` // for ordering and optimistic locking
+}
+
+// Collection implements storable.Storable.
+func (*JournalEntry) Collection() string {
+	return JournalEntriesCollection
+}