Replace the JavaScript mobile app with a native Swift iOS wallet

2026-09-19 13:33:11 +08:00
parent d80b58b704
commit 3e1a39d4d7
79 changed files with 25482 additions and 4023 deletions
@@ -0,0 +1,76 @@
+import Foundation
+import Security
+
+/// Small Keychain wrapper for wallet secrets. Secrets never touch UserDefaults.
+enum Keychain {
+  private static let service = "com.koins.app"
+
+  static func set(_ value: String, for key: String) {
+    guard let data = value.data(using: .utf8) else { return }
+    remove(key)
+    let query: [String: Any] = [
+      kSecClass as String: kSecClassGenericPassword,
+      kSecAttrService as String: service,
+      kSecAttrAccount as String: key,
+      kSecValueData as String: data,
+      kSecAttrAccessible as String: kSecAttrAccessibleAfterFirstUnlockThisDeviceOnly,
+    ]
+    SecItemAdd(query as CFDictionary, nil)
+  }
+
+  static func get(_ key: String) -> String? {
+    let query: [String: Any] = [
+      kSecClass as String: kSecClassGenericPassword,
+      kSecAttrService as String: service,
+      kSecAttrAccount as String: key,
+      kSecReturnData as String: true,
+      kSecMatchLimit as String: kSecMatchLimitOne,
+    ]
+    var item: CFTypeRef?
+    guard SecItemCopyMatching(query as CFDictionary, &item) == errSecSuccess,
+          let data = item as? Data,
+          let value = String(data: data, encoding: .utf8) else {
+      return nil
+    }
+    return value
+  }
+
+  static func remove(_ key: String) {
+    let query: [String: Any] = [
+      kSecClass as String: kSecClassGenericPassword,
+      kSecAttrService as String: service,
+      kSecAttrAccount as String: key,
+    ]
+    SecItemDelete(query as CFDictionary)
+  }
+}
+
+enum WalletStore {
+  private static let defaults = UserDefaults.standard
+
+  private static func walletKey(_ chain: Chain) -> String { "koins.wallet.\(chain.rawValue)" }
+  private static func secretKey(_ chain: Chain) -> String { "koins.secret.\(chain.rawValue)" }
+
+  static func wallet(_ chain: Chain) -> WalletRecord? {
+    guard let data = defaults.data(forKey: walletKey(chain)) else { return nil }
+    return try? JSONDecoder().decode(WalletRecord.self, from: data)
+  }
+
+  static func saveWallet(_ wallet: WalletRecord, chain: Chain) {
+    guard let data = try? JSONEncoder().encode(wallet) else { return }
+    defaults.set(data, forKey: walletKey(chain))
+  }
+
+  static func removeWallet(_ chain: Chain) {
+    defaults.removeObject(forKey: walletKey(chain))
+    Keychain.remove(secretKey(chain))
+  }
+
+  static func secret(_ chain: Chain) -> String? {
+    Keychain.get(secretKey(chain))
+  }
+
+  static func saveSecret(_ secret: String, chain: Chain) {
+    Keychain.set(secret, for: secretKey(chain))
+  }
+}