carddav: first commit

carddav/backend.go

@@ -0,0 +1,23 @@
+package carddav
+
+// TODO: add context support
+
+import (
+	"errors"
+
+	"github.com/emersion/go-vcard"
+)
+
+var (
+	ErrNotFound = errors.New("carddav: not found")
+)
+
+type AddressObject interface {
+	ID() string
+	Card() (vcard.Card, error)
+}
+
+type AddressBook interface {
+	GetAddressObject(id string) (AddressObject, error)
+	ListAddressObjects() ([]AddressObject, error)
+}