Fix error when getting font smoothing state (#38)

* Ensure valid font smoothing option is found

* Update errors to be more specific and descriptive

* Bump version numbers

Co-authored-by: Alastair Byrne <alastairbyrne@gmail.com>

Author: alexandrenicol

Big Sur Font Smoothing Toggler/FontSmoothingDefaults.swift

@@ -35,22 +35,33 @@ class FontSmoothingDefaults {
         CFPreferencesSetValue(key, value, applicationID, userName, hostName)
         let result = CFPreferencesSynchronize(applicationID, userName, hostName)
         guard result else {
-            throw FontSmoothingDefaultsError.unknownError
+            throw FontSmoothingDefaultsError.snychronisingCFPreferencesFailed
         }
     }
 
     func getFontSmoothingState() throws -> FontSmoothingOptions {
         let value = CFPreferencesCopyAppValue(CFPreferencesConstants.key, CFPreferencesConstants.applicationID) as? Int ?? FontSmoothingOptions.enabled.rawValue
 
-        guard let option = FontSmoothingOptions(rawValue: value) else {
-            throw FontSmoothingDefaultsError.unknownError
+        let fontSmoothingOptionValue = getValidFontSmoothingOptionValue(value)
+        
+        guard let option = FontSmoothingOptions(rawValue: fontSmoothingOptionValue) else {
+            throw FontSmoothingDefaultsError.invalidFontSmoothingOptionFound
         }
 
         return option
     }
 
+    private func getValidFontSmoothingOptionValue(_ value: Int) -> Int {
+        if value == 0 {
+            return FontSmoothingOptions.disabled.rawValue
+        } else {
+            return FontSmoothingOptions.enabled.rawValue
+        }
+    }
+    
     private enum FontSmoothingDefaultsError: Error {
-        case unknownError
+        case invalidFontSmoothingOptionFound
+        case snychronisingCFPreferencesFailed
     }
 
     private struct CFPreferencesConstants {

Font Smoothing Adjuster.xcodeproj/project.pbxproj

@@ -555,7 +555,7 @@
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				CURRENT_PROJECT_VERSION = 1.3.1;
+				CURRENT_PROJECT_VERSION = 1.3.2;
 				DEVELOPMENT_TEAM = 4YNZUF26AM;
 				ENABLE_HARDENED_RUNTIME = YES;
 				FRAMEWORK_SEARCH_PATHS = (
@@ -567,7 +567,7 @@
 					"$(inherited)",
 					"@executable_path/../Frameworks",
 				);
-				MARKETING_VERSION = 1.3.1;
+				MARKETING_VERSION = 1.3.2;
 				PRODUCT_BUNDLE_IDENTIFIER = "com.bouncetechnologies.Font-Smoothing-Adjuster";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_VERSION = 5.0;
@@ -583,7 +583,7 @@
 				CODE_SIGN_IDENTITY = "Apple Development";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				CURRENT_PROJECT_VERSION = 1.3.1;
+				CURRENT_PROJECT_VERSION = 1.3.2;
 				DEVELOPMENT_TEAM = 4YNZUF26AM;
 				ENABLE_HARDENED_RUNTIME = YES;
 				FRAMEWORK_SEARCH_PATHS = (
@@ -595,7 +595,7 @@
 					"$(inherited)",
 					"@executable_path/../Frameworks",
 				);
-				MARKETING_VERSION = 1.3.1;
+				MARKETING_VERSION = 1.3.2;
 				PRODUCT_BUNDLE_IDENTIFIER = "com.bouncetechnologies.Font-Smoothing-Adjuster";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_VERSION = 5.0;