[AltServer] Improves handling of errors when installing apps

AltKit/NSError+ALTServerError.m

@@ -9,6 +9,56 @@
 #import "NSError+ALTServerError.h"
 
 NSErrorDomain const AltServerErrorDomain = @"com.rileytestut.AltServer";
+NSErrorDomain const AltServerInstallationErrorDomain = @"com.rileytestut.AltServer.Installation";
 
 @implementation NSError (ALTServerError)
+
++ (void)load
+{
+    [NSError setUserInfoValueProviderForDomain:AltServerErrorDomain provider:^id _Nullable(NSError * _Nonnull error, NSErrorUserInfoKey  _Nonnull userInfoKey) {
+        if ([userInfoKey isEqualToString:NSLocalizedFailureReasonErrorKey])
+        {
+            return [error alt_localizedDescription];
+        }
+        
+        return nil;
+    }];
+}
+
+- (nullable NSString *)alt_localizedDescription
+{
+    switch ((ALTServerError)self.code)
+    {
+        case ALTServerErrorUnknown:
+            return NSLocalizedString(@"An unknown error occured.", @"");
+            
+        case ALTServerErrorConnectionFailed:
+            return NSLocalizedString(@"Could not connect to AltServer.", @"");
+            
+        case ALTServerErrorLostConnection:
+            return NSLocalizedString(@"Lost connection to AltServer.", @"");
+            
+        case ALTServerErrorDeviceNotFound:
+            return NSLocalizedString(@"AltServer could not locate this device", @"");
+            
+        case ALTServerErrorDeviceWriteFailed:
+            return NSLocalizedString(@"Failed to write app data to phone.", @"");
+            
+        case ALTServerErrorInvalidRequest:
+            return NSLocalizedString(@"AltServer received an invalid request.", @"");
+            
+        case ALTServerErrorInvalidResponse:
+            return NSLocalizedString(@"AltServer sent an invalid response.", @"");
+            
+        case ALTServerErrorInvalidApp:
+            return NSLocalizedString(@"The app is invalid.", @"");
+            
+        case ALTServerErrorInstallationFailed:
+            return NSLocalizedString(@"An error occured while installing the app.", @"");
+            
+        case ALTServerErrorMaximumFreeAppLimitReached:
+            return NSLocalizedString(@"You have reached the limit of 3 apps per device.", @"");
+    }
+}
+    
 @end