define a nostr.Kind type for event kinds, make adjustments everywhere and fix some horrible bugs with mmm, lmdb and badger querying and deleting.

eventstore/codec/betterbinary/accessors.go

@@ -0,0 +1,23 @@
+package betterbinary
+
+import (
+	"encoding/binary"
+
+	"fiatjaf.com/nostr"
+)
+
+func GetKind(evtb []byte) nostr.Kind {
+	return nostr.Kind(binary.LittleEndian.Uint16(evtb[1:3]))
+}
+
+func GetID(evtb []byte) nostr.ID {
+	return nostr.ID(evtb[7:39])
+}
+
+func GetPubKey(evtb []byte) nostr.PubKey {
+	return nostr.PubKey(evtb[39:71])
+}
+
+func GetCreatedAt(evtb []byte) nostr.Timestamp {
+	return nostr.Timestamp(binary.LittleEndian.Uint32(evtb[3:7]))
+}

eventstore/codec/betterbinary/codec.go

@@ -107,7 +107,7 @@ func Unmarshal(data []byte, evt *nostr.Event) (err error) {
 		}
 	}()
 
-	evt.Kind = uint16(binary.LittleEndian.Uint16(data[1:3]))
+	evt.Kind = nostr.Kind(binary.LittleEndian.Uint16(data[1:3]))
 	evt.CreatedAt = nostr.Timestamp(binary.LittleEndian.Uint32(data[3:7]))
 	evt.ID = nostr.ID(data[7:39])
 	evt.PubKey = nostr.PubKey(data[39:71])

eventstore/codec/betterbinary/filtering.go

@@ -27,7 +27,3 @@ func TagMatches(evtb []byte, key string, vals []string) bool {
 	}
 	return false
 }
-
-func KindMatches(evtb []byte, kind uint16) bool {
-	return binary.LittleEndian.Uint16(evtb[1:3]) == kind
-}