ndb: move to uint32 for kind and created_at

damus/Models/HomeModel.swift

@@ -66,7 +66,7 @@ class HomeModel {
     var has_event: [String: Set<String>] = [:]
     var deleted_events: Set<String> = Set()
     var channels: [String: NostrEvent] = [:]
-    var last_event_of_kind: [String: [Int: NostrEvent]] = [:]
+    var last_event_of_kind: [String: [UInt32: NostrEvent]] = [:]
     var done_init: Bool = false
     var incoming_dms: [NostrEvent] = []
     let dm_debouncer = Debouncer(interval: 0.5)
@@ -494,7 +494,7 @@ class HomeModel {
         pool.send(.subscribe(.init(filters: dms_filters, sub_id: dms_subid)), to: relay_ids)
     }
 
-    func get_last_of_kind(relay_id: String?) -> [Int: NostrEvent] {
+    func get_last_of_kind(relay_id: String?) -> [UInt32: NostrEvent] {
         return relay_id.flatMap { last_event_of_kind[$0] } ?? [:]
     }
 
@@ -566,7 +566,7 @@ class HomeModel {
         process_metadata_event(events: damus_state.events, our_pubkey: damus_state.pubkey, profiles: damus_state.profiles, ev: ev)
     }
 
-    func get_last_event_of_kind(relay_id: String, kind: Int) -> NostrEvent? {
+    func get_last_event_of_kind(relay_id: String, kind: UInt32) -> NostrEvent? {
         guard let m = last_event_of_kind[relay_id] else {
             last_event_of_kind[relay_id] = [:]
             return nil

damus/Models/Notifications/EventGroup.swift

@@ -10,7 +10,7 @@ import Foundation
 class EventGroup {
     var events: [NostrEvent]
     
-    var last_event_at: Int64 {
+    var last_event_at: UInt32 {
         guard let first = self.events.first else {
             return 0
         }

damus/Models/Notifications/ZapGroup.swift

@@ -12,7 +12,7 @@ class ZapGroup {
     var msat_total: Int64 = 0
     var zappers = Set<String>()
     
-    var last_event_at: Int64 {
+    var last_event_at: UInt32 {
         guard let first = zaps.first else {
             return 0
         }

damus/Models/NotificationsModel.swift

@@ -51,7 +51,7 @@ enum NotificationItem {
         }
     }
     
-    var last_event_at: Int64 {
+    var last_event_at: UInt32 {
         switch self {
         case .reaction(_, let evgrp):
             return evgrp.last_event_at

damus/Models/SearchHomeModel.swift

@@ -30,7 +30,7 @@ class SearchHomeModel: ObservableObject {
     func get_base_filter() -> NostrFilter {
         var filter = NostrFilter(kinds: [.text, .chat])
         filter.limit = self.limit
-        filter.until = Int64(Date.now.timeIntervalSince1970)
+        filter.until = UInt32(Date.now.timeIntervalSince1970)
         return filter
     }