import AppKit

@MainActor
enum AppLauncher {
    static func launch(_ url: URL) async throws {
        let configuration = NSWorkspace.OpenConfiguration()
        configuration.activates = true
        configuration.promptsUserIfNeeded = false

        try await withCheckedThrowingContinuation { (continuation: CheckedContinuation<Void, any Error>) in
            NSWorkspace.shared.openApplication(at: url, configuration: configuration) { _, error in
                // AppKit calls this completion on a concurrent queue; only resume the continuation here.
                if let error {
                    continuation.resume(throwing: error)
                } else {
                    continuation.resume()
                }
            }
        }
    }

    static func quit(_ url: URL) throws {
        let path = url.standardizedFileURL.resolvingSymlinksInPath().path
        for application in NSWorkspace.shared.runningApplications {
            guard application.bundleURL?.standardizedFileURL.resolvingSymlinksInPath().path == path,
                  !application.isTerminated else { continue }
            guard application.terminate() else {
                throw NSError(domain: "Conjure", code: 1, userInfo: [
                    NSLocalizedDescriptionKey: "The application refused the quit request. Save your work and quit it manually."
                ])
            }
        }
    }
}