feat: ios mobil arayüz tasarımı

ios/Bookibra/Services/KeychainStore.swift

@@ -0,0 +1,47 @@
+import Foundation
+import Security
+
+protocol KeychainStoreProtocol {
+    func save(_ value: String, for key: String) -> Bool
+    func read(for key: String) -> String?
+    func delete(for key: String) -> Bool
+}
+
+final class KeychainStore: KeychainStoreProtocol {
+    func save(_ value: String, for key: String) -> Bool {
+        let data = Data(value.utf8)
+        let query: [CFString: Any] = [
+            kSecClass: kSecClassGenericPassword,
+            kSecAttrAccount: key,
+            kSecValueData: data
+        ]
+
+        SecItemDelete(query as CFDictionary)
+        return SecItemAdd(query as CFDictionary, nil) == errSecSuccess
+    }
+
+    func read(for key: String) -> String? {
+        let query: [CFString: Any] = [
+            kSecClass: kSecClassGenericPassword,
+            kSecAttrAccount: key,
+            kSecReturnData: true,
+            kSecMatchLimit: kSecMatchLimitOne
+        ]
+
+        var item: CFTypeRef?
+        guard SecItemCopyMatching(query as CFDictionary, &item) == errSecSuccess,
+              let data = item as? Data else {
+            return nil
+        }
+
+        return String(data: data, encoding: .utf8)
+    }
+
+    func delete(for key: String) -> Bool {
+        let query: [CFString: Any] = [
+            kSecClass: kSecClassGenericPassword,
+            kSecAttrAccount: key
+        ]
+        return SecItemDelete(query as CFDictionary) == errSecSuccess
+    }
+}