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//
// DisplayChainedError.swift
// MullvadVPN
//
// Created by pronebird on 04/06/2020.
// Copyright © 2020 Mullvad VPN AB. All rights reserved.
//
import Foundation
import MullvadREST
import StoreKit
protocol DisplayChainedError {
var errorChainDescription: String? { get }
}
extension REST.Error: DisplayChainedError {
var errorChainDescription: String? {
switch self {
case let .network(urlError):
return String(
format: NSLocalizedString(
"NETWORK_ERROR",
tableName: "REST",
value: "Network error: %@",
comment: ""
),
urlError.localizedDescription
)
case let .unhandledResponse(statusCode, serverResponse):
return String(
format: NSLocalizedString(
"SERVER_ERROR",
tableName: "REST",
value: "Unexpected server response: %1$@ (HTTP status: %2$d)",
comment: ""
),
serverResponse?.code.rawValue ?? "(no code)",
statusCode
)
case .createURLRequest:
return NSLocalizedString(
"SERVER_REQUEST_ENCODING_ERROR",
tableName: "REST",
value: "Failure to create URL request",
comment: ""
)
case .decodeResponse:
return NSLocalizedString(
"SERVER_SUCCESS_RESPONSE_DECODING_ERROR",
tableName: "REST",
value: "Server response decoding error",
comment: ""
)
case let .transport(error):
return NSLocalizedString(
"TRANSPORT_ERROR",
tableName: "REST",
value: "Transport error: \(error.localizedDescription)",
comment: ""
)
}
}
}
extension SKError: LocalizedError {
public var errorDescription: String? {
switch code {
case .unknown:
return NSLocalizedString(
"UNKNOWN_ERROR",
tableName: "StoreKitErrors",
value: "Unknown error.",
comment: ""
)
case .clientInvalid:
return NSLocalizedString(
"CLIENT_INVALID",
tableName: "StoreKitErrors",
value: "Client is not allowed to issue the request.",
comment: ""
)
case .paymentCancelled:
return NSLocalizedString(
"PAYMENT_CANCELLED",
tableName: "StoreKitErrors",
value: "User cancelled the request.",
comment: ""
)
case .paymentInvalid:
return NSLocalizedString(
"PAYMENT_INVALID",
tableName: "StoreKitErrors",
value: "Invalid purchase identifier.",
comment: ""
)
case .paymentNotAllowed:
return NSLocalizedString(
"PAYMENT_NOT_ALLOWED",
tableName: "StoreKitErrors",
value: "This device is not allowed to make the payment.",
comment: ""
)
default:
return localizedDescription
}
}
}
extension StorePaymentManagerError: DisplayChainedError {
var errorChainDescription: String? {
switch self {
case .noAccountSet:
return NSLocalizedString(
"NO_ACCOUNT_SET_ERROR",
tableName: "StorePaymentManager",
value: "Internal error: account is not set.",
comment: ""
)
case let .validateAccount(restError):
let reason = restError.errorChainDescription ?? ""
if restError.compareErrorCode(.invalidAccount) {
return String(
format: NSLocalizedString(
"INVALID_ACCOUNT_ERROR",
tableName: "StorePaymentManager",
value: "Cannot add credit to invalid account.",
comment: ""
), reason
)
} else {
let reason = restError.errorChainDescription ?? ""
return String(
format: NSLocalizedString(
"VALIDATE_ACCOUNT_ERROR",
tableName: "StorePaymentManager",
value: "Failed to validate account token: %@",
comment: ""
), reason
)
}
case let .readReceipt(readReceiptError):
if readReceiptError is StoreReceiptNotFound {
return NSLocalizedString(
"RECEIPT_NOT_FOUND_ERROR",
tableName: "StorePaymentManager",
value: "AppStore receipt is not found on disk.",
comment: ""
)
} else if let storeError = readReceiptError as? SKError {
return String(
format: NSLocalizedString(
"REFRESH_RECEIPT_ERROR",
tableName: "StorePaymentManager",
value: "Cannot refresh the AppStore receipt: %@",
comment: ""
),
storeError.localizedDescription
)
} else {
return String(
format: NSLocalizedString(
"READ_RECEIPT_ERROR",
tableName: "StorePaymentManager",
value: "Cannot read the AppStore receipt from disk: %@",
comment: ""
),
readReceiptError.localizedDescription
)
}
case let .sendReceipt(restError):
let reason = restError.errorChainDescription ?? ""
let errorFormat = NSLocalizedString(
"SEND_RECEIPT_ERROR",
tableName: "StorePaymentManager",
value: "Failed to send the receipt to server: %@",
comment: ""
)
let recoverySuggestion = NSLocalizedString(
"SEND_RECEIPT_RECOVERY_SUGGESTION",
tableName: "StorePaymentManager",
value: "Please retry by using the \"Restore purchases\" button.",
comment: ""
)
var errorString = String(format: errorFormat, reason)
errorString.append("\n\n")
errorString.append(recoverySuggestion)
return errorString
case let .storePayment(storeError):
return (storeError as? SKError)?.errorDescription ?? storeError.localizedDescription
}
}
}
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