session-ios/SessionUIKit/Utilities/Task+Utilities.swift

// Copyright © 2025 Rangeproof Pty Ltd. All rights reserved.

import Foundation

internal extension Task where Success == Never, Failure == Never {
    /// Suspends the current task until the given deadline (compatibility version).
    @available(iOS, introduced: 13.0, obsoleted: 16.0, message: "Use built-in Task.sleep(for:) accepting Swift.Duration on iOS 16+")
    static func sleep(for interval: DispatchTimeInterval) async throws {
        let nanosecondsToSleep: UInt64 = (UInt64(interval.milliseconds) * 1_000_000)
        try await Task.sleep(nanoseconds: nanosecondsToSleep)
    }
}

private extension DispatchTimeInterval {
    var milliseconds: Int {
        switch self {
            case .seconds(let s): return s * 1_000
            case .milliseconds(let ms): return ms
            case .microseconds(let us): return us / 1_000  // integer division truncates any remainder
            case .nanoseconds(let ns): return ns / 1_000_000
            case .never: return -1
            @unknown default: return -1
        }
    }
}