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// SPDX-License-Identifier: MIT
// Copyright © 2018-2019 WireGuard LLC. All Rights Reserved.
import Foundation
class ActivateOnDemandViewModel {
enum OnDemandField {
case onDemand
case nonWiFiInterface
case wiFiInterface
case ssid
var localizedUIString: String {
switch self {
case .onDemand:
return tr("tunnelOnDemandKey")
case .nonWiFiInterface:
#if os(iOS)
return tr("tunnelOnDemandCellular")
#elseif os(macOS)
return tr("tunnelOnDemandEthernet")
#else
#error("Unimplemented")
#endif
case .wiFiInterface: return tr("tunnelOnDemandWiFi")
case .ssid: return tr("tunnelOnDemandSSIDsKey")
}
}
}
enum OnDemandSSIDOption {
case anySSID
case onlySpecificSSIDs
case exceptSpecificSSIDs
var localizedUIString: String {
switch self {
case .anySSID: return tr("tunnelOnDemandAnySSID")
case .onlySpecificSSIDs: return tr("tunnelOnDemandOnlySelectedSSIDs")
case .exceptSpecificSSIDs: return tr("tunnelOnDemandExceptSelectedSSIDs")
}
}
}
var isNonWiFiInterfaceEnabled = false
var isWiFiInterfaceEnabled = false
var selectedSSIDs = [String]()
var ssidOption: OnDemandSSIDOption = .anySSID
}
extension ActivateOnDemandViewModel {
convenience init(setting: ActivateOnDemandSetting) {
if setting.isActivateOnDemandEnabled {
self.init(option: setting.activateOnDemandOption)
} else {
self.init(option: .none)
}
}
convenience init(option: ActivateOnDemandOption) {
self.init()
switch option {
case .none:
break
case .wiFiInterfaceOnly(let onDemandSSIDOption):
isWiFiInterfaceEnabled = true
(ssidOption, selectedSSIDs) = ssidViewModel(from: onDemandSSIDOption)
case .nonWiFiInterfaceOnly:
isNonWiFiInterfaceEnabled = true
case .anyInterface(let onDemandSSIDOption):
isWiFiInterfaceEnabled = true
isNonWiFiInterfaceEnabled = true
(ssidOption, selectedSSIDs) = ssidViewModel(from: onDemandSSIDOption)
}
}
func toOnDemandOption() -> ActivateOnDemandOption {
switch (isWiFiInterfaceEnabled, isNonWiFiInterfaceEnabled) {
case (false, false):
return .none
case (false, true):
return .nonWiFiInterfaceOnly
case (true, false):
return .wiFiInterfaceOnly(toSSIDOption())
case (true, true):
return .anyInterface(toSSIDOption())
}
}
}
extension ActivateOnDemandViewModel {
func isEnabled(field: OnDemandField) -> Bool {
switch field {
case .nonWiFiInterface:
return isNonWiFiInterfaceEnabled
case .wiFiInterface:
return isWiFiInterfaceEnabled
default:
return false
}
}
func setEnabled(field: OnDemandField, isEnabled: Bool) {
switch field {
case .nonWiFiInterface:
isNonWiFiInterfaceEnabled = isEnabled
case .wiFiInterface:
isWiFiInterfaceEnabled = isEnabled
default:
break
}
}
}
extension ActivateOnDemandViewModel {
var localizedInterfaceDescription: String {
switch (isWiFiInterfaceEnabled, isNonWiFiInterfaceEnabled) {
case (false, false):
return tr("tunnelOnDemandOptionOff")
case (true, false):
return tr("tunnelOnDemandOptionWiFiOnly")
case (false, true):
#if os(iOS)
return tr("tunnelOnDemandOptionCellularOnly")
#elseif os(macOS)
return tr("tunnelOnDemandOptionEthernetOnly")
#else
#error("Unimplemented")
#endif
case (true, true):
#if os(iOS)
return tr("tunnelOnDemandOptionWiFiOrCellular")
#elseif os(macOS)
return tr("tunnelOnDemandOptionWiFiOrEthernet")
#else
#error("Unimplemented")
#endif
}
}
}
private extension ActivateOnDemandViewModel {
func ssidViewModel(from ssidOption: ActivateOnDemandSSIDOption) -> (OnDemandSSIDOption, [String]) {
switch ssidOption {
case .anySSID:
return (.anySSID, [])
case .onlySpecificSSIDs(let ssids):
return (.onlySpecificSSIDs, ssids)
case .exceptSpecificSSIDs(let ssids):
return (.exceptSpecificSSIDs, ssids)
}
}
func toSSIDOption() -> ActivateOnDemandSSIDOption {
switch ssidOption {
case .anySSID:
return .anySSID
case .onlySpecificSSIDs:
return .onlySpecificSSIDs(selectedSSIDs)
case .exceptSpecificSSIDs:
return .exceptSpecificSSIDs(selectedSSIDs)
}
}
}
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