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//
// DisplayChainedError.swift
// MullvadVPN
//
// Created by pronebird on 04/06/2020.
// Copyright © 2020 Mullvad VPN AB. All rights reserved.
//
import Foundation
protocol DisplayChainedError {
var errorChainDescription: String? { get }
}
extension RestError: DisplayChainedError {
var errorChainDescription: String? {
switch self {
case .network(let urlError):
return String(
format: NSLocalizedString("Network error: %@", comment: ""),
urlError.localizedDescription
)
case .server(let serverError):
if let knownErrorDescription = serverError.errorDescription {
return knownErrorDescription
} else {
return String(
format: NSLocalizedString("Server error: %@", comment: ""),
serverError.error ?? "(empty)"
)
}
case .encodePayload:
return NSLocalizedString("Server request encoding error", comment: "")
case .decodeSuccessResponse:
return NSLocalizedString("Server success response decoding error", comment: "")
case .decodeErrorResponse:
return NSLocalizedString("Server error response decoding error", comment: "")
}
}
}
extension TunnelManager.Error: DisplayChainedError {
var errorChainDescription: String? {
switch self {
case .loadAllVPNConfigurations(let systemError):
return String(format: NSLocalizedString("Failed to load system VPN configurations: %@", comment: ""), systemError.localizedDescription)
case .reloadVPNConfiguration(let systemError):
return String(format: NSLocalizedString("Failed to reload a VPN configuration: %@", comment: ""), systemError.localizedDescription)
case .saveVPNConfiguration(let systemError):
return String(format: NSLocalizedString("Failed to save a VPN tunnel configuration: %@", comment: ""), systemError.localizedDescription)
case .obtainPersistentKeychainReference(_):
return NSLocalizedString("Failed to obtain the persistent keychain reference for the VPN configuration", comment: "")
case .startVPNTunnel(let systemError):
return String(format: NSLocalizedString("System error when starting the VPN tunnel: %@", comment: ""), systemError.localizedDescription)
case .removeVPNConfiguration(let systemError):
return String(format: NSLocalizedString("Failed to remove the system VPN configuration: %@", comment: ""), systemError.localizedDescription)
case .removeInconsistentVPNConfiguration(let systemError):
return String(format: NSLocalizedString("Failed to remove the outdated system VPN configuration: %@", comment: ""), systemError.localizedDescription)
case .readTunnelSettings(_):
return NSLocalizedString("Failed to read tunnel settings", comment: "")
case .addTunnelSettings(_):
return NSLocalizedString("Failed to add tunnel settings", comment: "")
case .updateTunnelSettings(_):
return NSLocalizedString("Failed to update tunnel settings", comment: "")
case .removeTunnelSettings(_):
return NSLocalizedString("Failed to remove tunnel settings", comment: "")
case .pushWireguardKey(let restError):
let reason = restError.errorChainDescription ?? ""
var message = String(format: NSLocalizedString("Failed to send the WireGuard key to server: %@", comment: ""), reason)
if case .server(.keyLimitReached) = restError {
message.append("\n\n")
message.append(NSLocalizedString("Remove unused WireGuard keys and try again", comment: ""))
}
return message
case .replaceWireguardKey(let restError):
let reason = restError.errorChainDescription ?? ""
var message = String(format: NSLocalizedString("Failed to replace the WireGuard key on server: %@", comment: ""), reason)
if case .server(.keyLimitReached) = restError {
message.append("\n\n")
message.append(NSLocalizedString("Remove unused WireGuard keys and try again", comment: ""))
}
return message
case .removeWireguardKey:
// This error is never displayed anywhere
return nil
case .verifyWireguardKey(let restError):
let reason = restError.errorChainDescription ?? ""
return String(format: NSLocalizedString("Failed to verify the WireGuard key on server: %@", comment: ""), reason)
case .missingAccount:
return NSLocalizedString("Internal error: missing account", comment: "")
}
}
}
extension Account.Error: DisplayChainedError {
var errorChainDescription: String? {
switch self {
case .createAccount(let restError), .verifyAccount(let restError):
return restError.errorChainDescription
case .tunnelConfiguration(let tunnelError):
return tunnelError.errorChainDescription
}
}
}
extension AppStorePaymentManager.Error: DisplayChainedError {
var errorChainDescription: String? {
switch self {
case .noAccountSet:
return NSLocalizedString("Internal error: account is not set", comment: "")
case .readReceipt(let readReceiptError):
switch readReceiptError {
case .refresh(let storeError):
return String(format: NSLocalizedString("Cannot refresh the AppStore receipt: %@", comment: ""), storeError.localizedDescription)
case .io(let ioError):
return String(format: NSLocalizedString("Cannot read the AppStore receipt from disk: %@", comment: ""), ioError.localizedDescription)
case .doesNotExist:
return NSLocalizedString("AppStore receipt is not found on disk.", comment: "")
}
case .sendReceipt(let restError):
let reason = restError.errorChainDescription ?? ""
let format = NSLocalizedString(#"""
Failed to send the receipt to server: %@
Please retry by using the "Restore purchases" button.
"""#, comment: "")
return String(format: format, reason)
case .storePayment(let storeError):
return storeError.localizedDescription
}
}
}
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