Initial release

Sources/Knotchy/ChromeExtension.swift

@@ -0,0 +1,28 @@
+import AppKit
+
+enum ChromeExtension {
+    /// Set once the Chrome Web Store assigns the item ID; until then the setup window hides the row.
+    static let storeURL: URL? = nil
+
+    struct Browser: Equatable {
+        let name: String
+        let app: URL
+    }
+
+    // Chromium browsers all install from the Chrome Web Store.
+    private static let candidates = [("Chrome", "com.google.Chrome"), ("Edge", "com.microsoft.edgemac"),
+                                     ("Brave", "com.brave.Browser"), ("Arc", "company.thebrowser.Browser")]
+
+    static func installedBrowser() -> Browser? {
+        guard storeURL != nil else { return nil }
+        for (name, id) in candidates {
+            if let app = NSWorkspace.shared.urlForApplication(withBundleIdentifier: id) { return Browser(name: name, app: app) }
+        }
+        return nil
+    }
+
+    static func open(in browser: Browser) {
+        guard let storeURL else { return }
+        NSWorkspace.shared.open([storeURL], withApplicationAt: browser.app, configuration: NSWorkspace.OpenConfiguration())
+    }
+}