more optimisation using a hash map

StickerSlack/EmojiHoarder.swift

@@ -32,7 +32,7 @@ class EmojiHoarder: ObservableObject {
 			print("start loading remote db")
 			await self.loadRemoteDB()
 			print("start local emojis loading")
-			await self.loadLocalEmojis()
+			await self.findLocalEmojis()
 			print("end")
 		}
 	}
@@ -47,7 +47,7 @@ class EmojiHoarder: ObservableObject {
 		await withTaskGroup { group in
 			for i in emojis.indices {
 				group.addTask {
-					guard await self.emojis[i].isLocal else { return }
+					guard await self.localEmojis.contains(self.emojis[i]) else { return }
 					await self.emojis[i].deleteImage()
 					DispatchQueue.main.sync {
 						self.emojis[i].refresh()
@@ -58,7 +58,7 @@ class EmojiHoarder: ObservableObject {
 	}
 	
 	nonisolated
-	func loadLocalEmojis() async {
+	func findLocalEmojis() async {
 		let filteredSetted = await Set(self.emojis.filter { $0.isLocal })
 		await MainActor.run {
 			self.localEmojis = filteredSetted
@@ -74,6 +74,7 @@ class EmojiHoarder: ObservableObject {
 		try! data.write(to: EmojiHoarder.localEmojiDB)
 	}
 	
+	nonisolated
 	func loadLocalDB() -> [Emoji] {
 		if let localEmojiDB = try? Data(contentsOf: EmojiHoarder.localEmojiDB) {
 			let decoded = try! decoder.decode([Emoji].self, from: localEmojiDB)
@@ -136,9 +137,9 @@ class EmojiHoarder: ObservableObject {
 			case .none:
 				fallthrough
 			case .downloaded:
-				withAnimation(.interactiveSpring) { self.filteredEmojis = self.filteredEmojis.filter { $0.isLocal } }
+				withAnimation(.interactiveSpring) { self.filteredEmojis = self.filteredEmojis.filter { self.localEmojis.contains($0) } }
 			case .notDownloaded:
-				withAnimation(.interactiveSpring) { self.filteredEmojis = self.filteredEmojis.filter { !$0.isLocal } }
+				withAnimation(.interactiveSpring) { self.filteredEmojis = self.filteredEmojis.filter { !self.localEmojis.contains($0) } }
 			}
 		}
 	}

StickerSlack/Views/ContentView.swift

@@ -46,7 +46,10 @@ struct ContentView: View {
 					
 					ForEach($hoarder.filteredEmojis, id: \.self) { $emoji in
 						HStack {
-							EmojiPreview(emoji: emoji)
+							EmojiPreview(
+								hoarder: hoarder,
+								emoji: emoji
+							)
 								.frame(maxWidth: 100, maxHeight: 100)
 							Spacer()
 							Button("", systemImage: "checkmark") {
@@ -61,7 +64,7 @@ struct ContentView: View {
 								}
 							}
 							.buttonStyle(.plain)
-							if emoji.isLocal {
+							if hoarder.localEmojis.contains(emoji) {
 								Button("", systemImage: "trash") {
 									emoji.deleteImage()
 									emoji.refresh()
@@ -78,7 +81,7 @@ struct ContentView: View {
 							}
 						}
 						.swipeActions(edge: .trailing, allowsFullSwipe: true) {
-							if emoji.isLocal {
+							if hoarder.localEmojis.contains(emoji) {
 								Button("Remove", systemImage: "trash") {
 									emoji.deleteImage()
 									emoji.refresh()

StickerSlack/Views/EmojiPreview.swift

@@ -9,6 +9,7 @@ import SwiftUI
 import Haptics
 
 struct EmojiPreview: View {
+	@ObservedObject var hoarder: EmojiHoarder
 	@State var emoji: Emoji
 	
 	@State private var id: UUID = UUID()
@@ -17,7 +18,7 @@ struct EmojiPreview: View {
 		VStack(alignment: .leading) {
 			Text(emoji.name)
 			Group {
-				if emoji.isLocal {
+				if hoarder.localEmojis.contains(emoji) {
 					Image(uiImage: emoji.image ?? UIImage())
 						.resizable().scaledToFit()
 						.border(.orange)
@@ -62,6 +63,7 @@ struct EmojiPreview: View {
 
 #Preview {
 	EmojiPreview(
+		hoarder: EmojiHoarder(localOnly: true),
 		emoji: Emoji(
 			name: "s?",
 			url: URL(string: "https://neon443.github.io/images/fav.ico")!