Restructure project folders

ABS Client Mac/Audiobookshelf swift/Services/KeychainStore.swift

@@ -0,0 +1,59 @@
+import Foundation
+import Security
+
+struct StoredCredentials: Codable {
+    let serverURL: String
+    let username: String
+    let token: String
+}
+
+enum KeychainError: Error {
+    case osStatus(OSStatus)
+    case encodingFailed
+}
+
+enum KeychainStore {
+    private static let service = "com.local.Audiobookshelf-swift.auth"
+    private static let account = "primary"
+
+    static func save(_ creds: StoredCredentials) throws {
+        let data = try JSONEncoder().encode(creds)
+
+        let query: [String: Any] = [
+            kSecClass as String: kSecClassGenericPassword,
+            kSecAttrService as String: service,
+            kSecAttrAccount as String: account,
+        ]
+        SecItemDelete(query as CFDictionary)
+
+        var attributes = query
+        attributes[kSecValueData as String] = data
+        attributes[kSecAttrAccessible as String] = kSecAttrAccessibleAfterFirstUnlock
+
+        let status = SecItemAdd(attributes as CFDictionary, nil)
+        guard status == errSecSuccess else { throw KeychainError.osStatus(status) }
+    }
+
+    static func load() -> StoredCredentials? {
+        let query: [String: Any] = [
+            kSecClass as String: kSecClassGenericPassword,
+            kSecAttrService as String: service,
+            kSecAttrAccount as String: account,
+            kSecReturnData as String: true,
+            kSecMatchLimit as String: kSecMatchLimitOne,
+        ]
+        var item: CFTypeRef?
+        let status = SecItemCopyMatching(query as CFDictionary, &item)
+        guard status == errSecSuccess, let data = item as? Data else { return nil }
+        return try? JSONDecoder().decode(StoredCredentials.self, from: data)
+    }
+
+    static func delete() {
+        let query: [String: Any] = [
+            kSecClass as String: kSecClassGenericPassword,
+            kSecAttrService as String: service,
+            kSecAttrAccount as String: account,
+        ]
+        SecItemDelete(query as CFDictionary)
+    }
+}