ndb: move to uint32 for kind and created_at

damus/Nostr/NostrEvent.swift

@@ -63,8 +63,8 @@ class NostrEventOld: Codable, Identifiable, CustomStringConvertible, Equatable,
     var flags: Int = 0
 
     let pubkey: String
-    let created_at: Int64
-    let kind: Int
+    let created_at: UInt32
+    let kind: UInt32
 
     // cached stuff
     private var _event_refs: [EventRef]? = nil
@@ -665,8 +665,8 @@ func make_zap_request_event(keypair: FullKeypair, content: String, relays: [Rela
     
     var kp = keypair
     
-    let now = Int64(Date().timeIntervalSince1970)
-    
+    let now = UInt32(Date().timeIntervalSince1970)
+
     var privzap_req: PrivateZapRequest?
     
     var message = content

damus/Nostr/NostrFilter.swift

@@ -12,8 +12,8 @@ struct NostrFilter: Codable, Equatable {
     var kinds: [NostrKind]?
     var referenced_ids: [String]?
     var pubkeys: [String]?
-    var since: Int64?
-    var until: Int64?
+    var since: UInt32?
+    var until: UInt32?
     var limit: UInt32?
     var authors: [String]?
     var hashtag: [String]?
@@ -32,7 +32,7 @@ struct NostrFilter: Codable, Equatable {
         case limit
     }
     
-    init(ids: [String]? = nil, kinds: [NostrKind]? = nil, referenced_ids: [String]? = nil, pubkeys: [String]? = nil, since: Int64? = nil, until: Int64? = nil, limit: UInt32? = nil, authors: [String]? = nil, hashtag: [String]? = nil) {
+    init(ids: [String]? = nil, kinds: [NostrKind]? = nil, referenced_ids: [String]? = nil, pubkeys: [String]? = nil, since: UInt32? = nil, until: UInt32? = nil, limit: UInt32? = nil, authors: [String]? = nil, hashtag: [String]? = nil) {
         self.ids = ids
         self.kinds = kinds
         self.referenced_ids = referenced_ids

damus/Nostr/NostrKind.swift

@@ -8,7 +8,7 @@
 import Foundation
 
 
-enum NostrKind: Int, Codable {
+enum NostrKind: UInt32, Codable {
     case metadata = 0
     case text = 1
     case contacts = 3