chore: move the go code into a subfolder

apps/api/internal/v2/eventstore/event.go

@@ -0,0 +1,66 @@
+package eventstore
+
+import (
+	"time"
+)
+
+type Unmarshal func(ptr any) error
+
+type Payload interface {
+	Unmarshal | any
+}
+
+type Action[P Payload] struct {
+	Creator  string
+	Type     string
+	Revision uint16
+	Payload  P
+}
+
+type Command struct {
+	Action[any]
+	UniqueConstraints []*UniqueConstraint
+}
+
+type StorageEvent struct {
+	Action[Unmarshal]
+
+	Aggregate Aggregate
+	CreatedAt time.Time
+	Position  GlobalPosition
+	Sequence  uint32
+}
+
+type Event[P any] struct {
+	*StorageEvent
+	Payload P
+}
+
+func UnmarshalPayload[P any](unmarshal Unmarshal) (P, error) {
+	var payload P
+	err := unmarshal(&payload)
+	return payload, err
+}
+
+type EmptyPayload struct{}
+
+type TypeChecker interface {
+	ActionType() string
+}
+
+func Type[T TypeChecker]() string {
+	var t T
+	return t.ActionType()
+}
+
+func IsType[T TypeChecker](types ...string) bool {
+	gotten := Type[T]()
+
+	for _, typ := range types {
+		if gotten == typ {
+			return true
+		}
+	}
+
+	return false
+}