[AltBackup]: Fixes for swift compile errors

AltBackup/BackupController.swift

@@ -26,37 +26,65 @@ extension Error
 
 struct BackupError: ALTLocalizedError
 {
-    enum Code
+    enum Code: ALTErrorEnum, RawRepresentable
     {
         case invalidBundleID
         case appGroupNotFound(String?)
         case randomError // Used for debugging.
-    }
-    
-    let code: Code
-    
-    let sourceFile: String
-    let sourceFileLine: Int
-    
-    var failure: String?
-
-    var failureReason: String? {
-        switch self.code
-        {
-        case .invalidBundleID: return NSLocalizedString("The bundle identifier is invalid.", comment: "")
-        case .appGroupNotFound(let appGroup):
-            if let appGroup = appGroup
-            {
-                return String(format: NSLocalizedString("The app group “%@” could not be found.", comment: ""), appGroup)
+        
+        // Provide failure reason for each error code
+        var errorFailureReason: String {
+            switch self {
+            case .invalidBundleID:
+                return NSLocalizedString("The bundle identifier is invalid.", comment: "")
+            case .appGroupNotFound(let appGroup):
+                if let appGroup = appGroup {
+                    return String(format: NSLocalizedString("The app group “%@” could not be found.", comment: ""), appGroup)
+                } else {
+                    return NSLocalizedString("The AltStore app group could not be found.", comment: "")
+                }
+            case .randomError:
+                return NSLocalizedString("A random error occurred.", comment: "")
             }
-            else
-            {
-                return NSLocalizedString("The AltStore app group could not be found.", comment: "")
+        }
+        
+        static var errorDomain: String {
+            return "com.sidestore.BackupError"
+        }
+        
+        // Add a raw value for RawRepresentable conformance
+        var rawValue: Int {
+            switch self {
+            case .invalidBundleID: return 0
+            case .appGroupNotFound: return 1
+            case .randomError: return 2
+            }
+        }
+        
+        // Initializer for RawRepresentable
+        init?(rawValue: Int) {
+            switch rawValue {
+            case 0: self = .invalidBundleID
+            case 1: self = .appGroupNotFound(nil)
+            case 2: self = .randomError
+            default: return nil
             }
-        case .randomError: return NSLocalizedString("A random error occured.", comment: "")
         }
     }
     
+    let code: Code
+    let sourceFile: String
+    let sourceFileLine: Int
+    var failure: String?
+    
+    var errorTitle: String?
+    var errorFailure: String?
+    
+    var failureReason: String? {
+        return self.code.errorFailureReason
+    }
+
+    // Conforming to the userInfo required by ALTLocalizedError
     var errorUserInfo: [String : Any] {
         let userInfo: [String: Any?] = [NSLocalizedDescriptionKey: self.errorDescription,
                                         NSLocalizedFailureReasonErrorKey: self.failureReason,
@@ -65,6 +93,11 @@ struct BackupError: ALTLocalizedError
                                         ErrorUserInfoKey.sourceFileLine: self.sourceFileLine]
         return userInfo.compactMapValues { $0 }
     }
+
+    // Implement description for CustomStringConvertible
+    var description: String {
+        return "\(errorTitle ?? "Unknown Error"): \(failureReason ?? "No reason available")"
+    }
     
     init(_ code: Code, description: String? = nil, file: String = #file, line: Int = #line)
     {
@@ -72,6 +105,8 @@ struct BackupError: ALTLocalizedError
         self.failure = description
         self.sourceFile = file
         self.sourceFileLine = line
+        self.errorTitle = NSLocalizedString("Backup Error", comment: "")
+        self.errorFailure = description
     }
 }