[WCM] Store recent wallets in UserDefaults

Sources/WalletConnectModal/Modal/ModalViewModel.swift

@@ -55,9 +55,11 @@ final class ModalViewModel: ObservableObject {
     }
 
     var filteredWallets: [Listing] {
-        if searchTerm.isEmpty { return wallets }
+        if searchTerm.isEmpty { return sortByRecent(wallets) }
 
-        return wallets.filter { $0.name.lowercased().contains(searchTerm.lowercased()) }
+        return sortByRecent(
+            wallets.filter { $0.name.lowercased().contains(searchTerm.lowercased()) }
+        )
     }
 
     private var disposeBag = Set<AnyCancellable>()
@@ -120,6 +122,8 @@ final class ModalViewModel: ObservableObject {
     }
 
     func onListingTap(_ listing: Listing) {
+        setLastTimeUsed(listing.id)
+
         navigateToDeepLink(
             universalLink: listing.mobile.universal ?? "",
             nativeLink: listing.mobile.native ?? ""
@@ -146,7 +150,6 @@ final class ModalViewModel: ObservableObject {
 
     func onCopyButton() {
 
-
         guard let uri else {
             toast = Toast(style: .error, message: "No uri found")
             return
@@ -190,13 +193,72 @@ final class ModalViewModel: ObservableObject {
 
                     return lhs < rhs
                 }
+
+                loadRecentWallets()
             }
         } catch {
             toast = Toast(style: .error, message: error.localizedDescription)
         }
     }
 }
 
+// MARK: - Recent Wallets
+
+private extension ModalViewModel {
+
+    func sortByRecent(_ input: [Listing]) -> [Listing] {
+        input.sorted { lhs, rhs in
+            guard let lhsLastTimeUsed = lhs.lastTimeUsed else {
+                return false
+            }
+
+            guard let rhsLastTimeUsed = rhs.lastTimeUsed else {
+                return true
+            }
+
+            return lhsLastTimeUsed > rhsLastTimeUsed
+        }
+    }
+
+    func loadRecentWallets() {
+        RecentWalletsStorage().recentWallets.forEach { wallet in
+
+            guard let lastTimeUsed = wallet.lastTimeUsed else {
+                return
+            }
+
+            // Consider Recent only for 3 days
+            if abs(lastTimeUsed.timeIntervalSinceNow) > (24 * 60 * 60 * 3) {
+                return
+            }
+
+            setLastTimeUsed(wallet.id, date: lastTimeUsed)
+        }
+    }
+
+    func saveRecentWallets() {
+        RecentWalletsStorage().recentWallets = Array(wallets.filter {
+            $0.lastTimeUsed != nil
+        }.prefix(5))
+    }
+
+    func setLastTimeUsed(_ walletId: String, date: Date = Date()) {
+        guard let index = wallets.firstIndex(where: {
+            $0.id == walletId
+        }) else {
+            return
+        }
+
+        var copy = wallets[index]
+        copy.lastTimeUsed = date
+        wallets[index] = copy
+
+        saveRecentWallets()
+    }
+}
+
+// MARK: - Deeplinking
+
 private extension ModalViewModel {
     enum DeeplinkErrors: LocalizedError {
         case noWalletLinkFound

Sources/WalletConnectModal/Modal/RecentWalletStorage.swift

@@ -0,0 +1,31 @@
+import Foundation
+
+final class RecentWalletsStorage {
+    private let defaults: UserDefaults
+
+    init(defaults: UserDefaults = .standard) {
+        self.defaults = defaults
+    }
+
+    var recentWallets: [Listing] {
+        get {
+            guard
+                let data = defaults.data(forKey: "recentWallets"),
+                let wallets = try? JSONDecoder().decode([Listing].self, from: data)
+            else {
+                return []
+            }
+
+            return wallets
+        }
+        set {
+            guard
+                let walletsData = try? JSONEncoder().encode(newValue)
+            else {
+                return
+            }
+
+            defaults.set(walletsData, forKey: "recentWallets")
+        }
+    }
+}

Sources/WalletConnectModal/Modal/Screens/WalletList.swift

@@ -176,7 +176,7 @@ struct WalletList: View {
                     .minimumScaleFactor(0.4)
 
                 Text("RECENT")
-                    .opacity(0)
+                    .opacity(wallet.lastTimeUsed != nil ? 1 : 0)
                     .font(.system(size: 10))
                     .foregroundColor(.foreground3)
                     .padding(.horizontal, 12)

Sources/WalletConnectModal/Networking/Explorer/ListingsResponse.swift

@@ -12,6 +12,7 @@ struct Listing: Codable, Hashable, Identifiable {
     let imageId: String
     let app: App
     let mobile: Mobile
+    var lastTimeUsed: Date? 
 
     private enum CodingKeys: String, CodingKey {
         case id
@@ -21,6 +22,7 @@ struct Listing: Codable, Hashable, Identifiable {
         case imageId = "image_id"
         case app
         case mobile
+        case lastTimeUsed
     }
 
     struct App: Codable, Hashable {