Use Siesta framework

Apple TV/TrendingCountrySelectionView.swift

@@ -1,31 +1,27 @@
 import SwiftUI
 
 struct TrendingCountrySelectionView: View {
-    @Environment(\.presentationMode) private var presentationMode
-    @ObservedObject private var provider = TrendingCountriesProvider()
-
     @State private var query: String = ""
+
+    @ObservedObject private var store = Store<[Country]>()
     @Binding var selectedCountry: Country
 
     @Environment(\.dismiss) private var dismiss
 
     var body: some View {
         ScrollView(.vertical) {
-            ForEach(countries) { country in
+            ForEach(store.collection) { country in
                 Button(country.name) {
                     selectedCountry = country
-                    presentationMode.wrappedValue.dismiss()
+                    dismiss()
                 }
             }
             .frame(width: 800)
         }
-        .searchable(text: $query)
+        .searchable(text: $query, prompt: Text("Country name or two letter code"))
+        .onChange(of: query) { newQuery in
+            store.replace(Country.search(newQuery))
+        }
         .background(.thinMaterial)
     }
-
-    var countries: [Country] {
-        provider.load(query)
-
-        return provider.countries
-    }
 }