extension SnackbarTheme where Self == DefaultSnackbarTheme {
    static var info: SnackbarTheme { DefaultSnackbarTheme(withStyle: .info) }
    static var alert: SnackbarTheme { DefaultSnackbarTheme(withStyle: .alert) }
    static var warning: SnackbarTheme { DefaultSnackbarTheme(withStyle: .warning) }
    static var success: SnackbarTheme { DefaultSnackbarTheme(withStyle: .success) }
}

struct DefaultSnackbarTheme: SnackbarTheme {
    var style: SnackbarStyle
    
    init(withStyle style: SnackbarStyle) {
        self.style = style
    }

    var textColor: NSColor { .labelColor }
    var backgroundColor: NSColor {
        switch style {
        case .alert:
            return .systemRed
        case .success:
            return .systemGreen
        case .warning:
            return .systemOrange
        case .info:
            return .systemBlue
        }
    }

    var borderColor: NSColor {
        .secondaryLabelColor
    }
}

let theme: SnackbarTheme = .alert
let actions = [
    SnackbarAction(
        title: NSLocalizedString("Remove", comment: ""),
        icon: nil,
        type: .primary,
        action: {}
    ),
    SnackbarAction(
        title: NSLocalizedString("Later", comment: ""),
        icon: nil,
        type: .secondary,
        action: {}
    ),
]
Snackbar.show(
    theme: theme,
    type: .permanent,
    title: NSLocalizedString("Are you sure you want to remove all spaces?", comment: "").text,
    subtitle: NSLocalizedString("You can not undo this action", comment: "").text,
    actions: actions,
    actionsLayout: .horizontal,
    hasActionsSeparator: false,
    icon: NSImage(named: "your_icon"),
    fromWindow: view.window
)