[AltServer] Adds “Search FAQ” button to ErrorDetailsViewController

AltServer/ErrorDetailsViewController.swift

@@ -44,5 +44,20 @@ private extension ErrorDetailsViewController
         let detailedDescription = error.formattedDetailedDescription(with: font)
         self.detailedDescriptionLabel.attributedStringValue = detailedDescription
     }
+    
+    @IBAction func searchFAQ(_ sender: NSButton)
+    {
+        guard let error else { return }
+        
+        let baseURL = URL(string: "https://faq.altstore.io/getting-started/error-codes")!
+        var components = URLComponents(url: baseURL, resolvingAgainstBaseURL: false)!
+        
+        let nsError = error as NSError
+        let query = [nsError.domain, "\(error.displayCode)"].joined(separator: "+")
+        components.queryItems = [URLQueryItem(name: "q", value: query)]
+        
+        let url = components.url ?? baseURL
+        NSWorkspace.shared.open(url)
+    }
 }