57 lines
2.0 KiB
Swift
57 lines
2.0 KiB
Swift
// Copyright © 2020 Metabolist. All rights reserved.
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import AuthenticationServices
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import Combine
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import Foundation
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public protocol WebAuthSession: AnyObject {
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init(url URL: URL,
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callbackURLScheme: String?,
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completionHandler: @escaping WebAuthSessionCompletionHandler)
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var presentationContextProvider: WebAuthPresentationContextProviding? { get set }
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@discardableResult func start() -> Bool
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}
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extension WebAuthSession {
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static func publisher(
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url: URL,
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callbackURLScheme: String?,
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presentationContextProvider: WebAuthPresentationContextProviding) -> AnyPublisher<URL, Error> {
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Future<URL, Error> { promise in
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let webAuthSession = Self(
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url: url,
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callbackURLScheme: callbackURLScheme) { oauthCallbackURL, error in
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if let error = error {
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return promise(.failure(error))
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}
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guard let oauthCallbackURL = oauthCallbackURL else {
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return promise(.failure(URLError(.unknown)))
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}
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return promise(.success(oauthCallbackURL))
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}
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webAuthSession.presentationContextProvider = presentationContextProvider
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DispatchQueue.main.async {
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webAuthSession.start()
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}
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}
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.eraseToAnyPublisher()
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}
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}
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final class WebAuthSessionContextProvider: NSObject, ASWebAuthenticationPresentationContextProviding {
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func presentationAnchor(for session: ASWebAuthenticationSession) -> ASPresentationAnchor {
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ASPresentationAnchor()
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}
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}
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public typealias WebAuthSessionCompletionHandler = ASWebAuthenticationSession.CompletionHandler
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public typealias WebAuthSessionError = ASWebAuthenticationSessionError
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public typealias WebAuthPresentationContextProviding = ASWebAuthenticationPresentationContextProviding
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public typealias LiveWebAuthSession = ASWebAuthenticationSession
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extension LiveWebAuthSession: WebAuthSession {}
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