passepartout-apple/Passepartout/Library/Sources/CommonLibrary/IAP/FallbackReceiptReader.swift

91 lines
2.9 KiB
Swift

//
// FallbackReceiptReader.swift
// Passepartout
//
// Created by Davide De Rosa on 11/6/24.
// Copyright (c) 2024 Davide De Rosa. All rights reserved.
//
// https://github.com/passepartoutvpn
//
// This file is part of Passepartout.
//
// Passepartout is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Passepartout is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Passepartout. If not, see <http://www.gnu.org/licenses/>.
//
import CommonUtils
import Foundation
import Kvitto
import PassepartoutKit
public actor FallbackReceiptReader: AppReceiptReader {
private let reader: InAppReceiptReader?
private let localReader: (URL) -> InAppReceiptReader?
public init(
reader: (InAppReceiptReader & Sendable)?,
localReader: @escaping @Sendable (URL) -> InAppReceiptReader & Sendable
) {
self.reader = reader
self.localReader = localReader
}
public func receipt(at userLevel: AppUserLevel) async -> InAppReceipt? {
let localURL = Bundle.main.appStoreReceiptURL
if let receipt = await reader?.receipt() {
// fetch build number from local receipt
if let localURL,
let local = localReader(localURL),
let localReceipt = await local.receipt(),
let build = localReceipt.originalBuildNumber {
return receipt.withBuildNumber(build)
}
return receipt
}
// fall back to release/sandbox receipt
guard let localURL else {
return nil
}
// attempt fallback from primary to local receipt
pp_log(.app, .error, "Primary receipt not found, falling back to local receipt")
if let local = localReader(localURL), let localReceipt = await local.receipt() {
return localReceipt
}
// in TestFlight, attempt fallback from sandbox to release receipt
if userLevel == .beta {
let releaseURL = localURL
.deletingLastPathComponent()
.appendingPathComponent("receipt")
guard releaseURL != localURL else {
#if !os(macOS) && !targetEnvironment(simulator)
assertionFailure("How can release URL be equal to sandbox URL in TestFlight?")
#endif
return nil
}
pp_log(.app, .error, "Sandbox receipt not found, falling back to Release receipt")
let release = localReader(releaseURL)
return await release?.receipt()
}
return nil
}
}