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Use async/await for login

This commit is contained in:
Shadowfacts 2021-06-12 23:22:49 -04:00
parent 27e05cc72d
commit c36a239f46
5 changed files with 108 additions and 85 deletions
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39
Pachyderm/Client.swift
View File

@ -101,6 +101,19 @@ public class Client {
return task
}
public func run<Result>(_ request: Request<Result>) async throws -> (Result, Pagination?) {
return try await withCheckedThrowingContinuation { continuation in
run(request) { response in
switch response {
case let .failure(error):
continuation.resume(throwing: error)
case let .success(result, pagination):
continuation.resume(returning: (result, pagination))
}
}
}
}
func createURLRequest<Result>(request: Request<Result>) -> URLRequest? {
guard var components = URLComponents(url: baseURL, resolvingAgainstBaseURL: true) else { return nil }
components.path = request.path
@ -117,24 +130,21 @@ public class Client {
}
// MARK: - Authorization
public func registerApp(name: String, redirectURI: String, scopes: [Scope], website: URL? = nil, completion: @escaping Callback<RegisteredApplication>) {
public func registerApp(name: String, redirectURI: String, scopes: [Scope], website: URL? = nil) async throws -> RegisteredApplication {
let request = Request<RegisteredApplication>(method: .post, path: "/api/v1/apps", body: ParametersBody([
"client_name" => name,
"redirect_uris" => redirectURI,
"scopes" => scopes.scopeString,
"website" => website?.absoluteString
]))
run(request) { result in
defer { completion(result) }
guard case let .success(application, _) = result else { return }
self.appID = application.id
self.clientID = application.clientID
self.clientSecret = application.clientSecret
}
let (application, _) = try await run(request)
self.appID = application.id
self.clientID = application.clientID
self.clientSecret = application.clientSecret
return application
}
public func getAccessToken(authorizationCode: String, redirectURI: String, completion: @escaping Callback<LoginSettings>) {
public func getAccessToken(authorizationCode: String, redirectURI: String) async throws -> LoginSettings {
let request = Request<LoginSettings>(method: .post, path: "/oauth/token", body: ParametersBody([
"client_id" => clientID,
"client_secret" => clientSecret,
@ -142,12 +152,9 @@ public class Client {
"code" => authorizationCode,
"redirect_uri" => redirectURI
]))
run(request) { result in
defer { completion(result) }
guard case let .success(loginSettings, _) = result else { return }
self.accessToken = loginSettings.accessToken
}
let (settings, _) = try await run(request)
self.accessToken = settings.accessToken
return settings
}
// MARK: - Self

6
Tusker.xcodeproj/project.pbxproj
View File

@ -2342,6 +2342,7 @@
DYLIB_INSTALL_NAME_BASE = "@rpath";
INFOPLIST_FILE = Pachyderm/Info.plist;
INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
IPHONEOS_DEPLOYMENT_TARGET = 15.0;
"IPHONEOS_DEPLOYMENT_TARGET[sdk=macosx*]" = 14.3;
LD_RUNPATH_SEARCH_PATHS = (
"$(inherited)",
@ -2373,6 +2374,7 @@
DYLIB_INSTALL_NAME_BASE = "@rpath";
INFOPLIST_FILE = Pachyderm/Info.plist;
INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
IPHONEOS_DEPLOYMENT_TARGET = 15.0;
"IPHONEOS_DEPLOYMENT_TARGET[sdk=macosx*]" = 14.3;
LD_RUNPATH_SEARCH_PATHS = (
"$(inherited)",
@ -2560,7 +2562,7 @@
CURRENT_PROJECT_VERSION = 19;
DEVELOPMENT_TEAM = V4WK9KR9U2;
INFOPLIST_FILE = Tusker/Info.plist;
IPHONEOS_DEPLOYMENT_TARGET = 14.1;
IPHONEOS_DEPLOYMENT_TARGET = 15.0;
"IPHONEOS_DEPLOYMENT_TARGET[sdk=macosx*]" = 14.3;
LD_RUNPATH_SEARCH_PATHS = (
"$(inherited)",
@ -2593,7 +2595,7 @@
CURRENT_PROJECT_VERSION = 19;
DEVELOPMENT_TEAM = V4WK9KR9U2;
INFOPLIST_FILE = Tusker/Info.plist;
IPHONEOS_DEPLOYMENT_TARGET = 14.1;
IPHONEOS_DEPLOYMENT_TARGET = 15.0;
"IPHONEOS_DEPLOYMENT_TARGET[sdk=macosx*]" = 14.3;
LD_RUNPATH_SEARCH_PATHS = (
"$(inherited)",

2
Tusker.xcworkspace/xcshareddata/swiftpm/Package.resolved
View File

@ -2,7 +2,7 @@
"object": {
"pins": [
{
"package": "PLCrashReporter",
"package": "plcrashreporter",
"repositoryURL": "https://github.com/microsoft/plcrashreporter",
"state": {
"branch": null,

40
Tusker/Controllers/MastodonController.swift
View File

@ -65,28 +65,22 @@ class MastodonController: ObservableObject {
return client.run(request, completion: completion)
}
func registerApp(completion: @escaping (_ clientID: String, _ clientSecret: String) -> Void) {
guard client.clientID == nil,
client.clientSecret == nil else {
completion(client.clientID!, client.clientSecret!)
return
}
client.registerApp(name: "Tusker", redirectURI: "tusker://oauth", scopes: [.read, .write, .follow]) { response in
guard case let .success(app, _) = response else { fatalError() }
self.client.clientID = app.clientID
self.client.clientSecret = app.clientSecret
completion(app.clientID, app.clientSecret)
}
@discardableResult
func run<Result>(_ request: Request<Result>) async throws -> (Result, Pagination?) {
return try await client.run(request)
}
func authorize(authorizationCode: String, completion: @escaping (_ accessToken: String) -> Void) {
client.getAccessToken(authorizationCode: authorizationCode, redirectURI: "tusker://oauth") { response in
guard case let .success(settings, _) = response else { fatalError() }
self.client.accessToken = settings.accessToken
completion(settings.accessToken)
}
func registerApp() async -> (String, String) {
guard client.clientID == nil,
client.clientSecret == nil else {
return (client.clientID!, client.clientSecret!)
}
let app = try! await client.registerApp(name: "Tusker", redirectURI: "tusker://oauth", scopes: [.read, .write, .follow])
return (app.clientID, app.clientSecret)
}
func authorize(authorizationCode: String) async -> String {
return try! await client.getAccessToken(authorizationCode: authorizationCode, redirectURI: "tusker://oauth").accessToken
}
func getOwnAccount(completion: ((Result<Account, Client.Error>) -> Void)? = nil) {
@ -118,6 +112,12 @@ class MastodonController: ObservableObject {
}
}
func getOwnAccount() async throws -> Account {
return try await withCheckedThrowingContinuation { continuation in
getOwnAccount(completion: continuation.resume)
}
}
func getOwnInstance(completion: ((Instance) -> Void)? = nil) {
getOwnInstanceInternal(retryAttempt: 0, completion: completion)
}

106
Tusker/Screens/Onboarding/OnboardingViewController.swift
View File

@ -8,6 +8,7 @@
import UIKit
import AuthenticationServices
import Pachyderm
protocol OnboardingViewControllerDelegate {
func didFinishOnboarding(account: LocalData.UserAccountInfo)
@ -40,54 +41,20 @@ class OnboardingViewController: UINavigationController {
instanceSelector.delegate = self
}
}
extension OnboardingViewController: InstanceSelectorTableViewControllerDelegate {
func didSelectInstance(url instanceURL: URL) {
let mastodonController = MastodonController(instanceURL: instanceURL)
mastodonController.registerApp { (clientID, clientSecret) in
var components = URLComponents(url: instanceURL, resolvingAgainstBaseURL: false)!
components.path = "/oauth/authorize"
components.queryItems = [
URLQueryItem(name: "client_id", value: clientID),
URLQueryItem(name: "response_type", value: "code"),
URLQueryItem(name: "scope", value: "read write follow"),
URLQueryItem(name: "redirect_uri", value: "tusker://oauth")
]
let authorizeURL = components.url!
self.authenticationSession = ASWebAuthenticationSession(url: authorizeURL, callbackURLScheme: "tusker") { url, error in
guard error == nil,
let url = url,
let components = URLComponents(url: url, resolvingAgainstBaseURL: true),
let item = components.queryItems?.first(where: { $0.name == "code" }),
let authCode = item.value else { return }
mastodonController.authorize(authorizationCode: authCode) { (accessToken) in
// construct a temporary UserAccountInfo instance for the MastodonController to use to fetch it's own account
let tempAccountInfo = LocalData.UserAccountInfo(id: "temp", instanceURL: instanceURL, clientID: clientID, clientSecret: clientSecret, username: nil, accessToken: accessToken)
mastodonController.accountInfo = tempAccountInfo
mastodonController.getOwnAccount { (result) in
DispatchQueue.main.async {
switch result {
case let .failure(error):
let alert = UIAlertController(title: "Unable to Verify Credentials", message: "Your account could not be fetched at this time: \(error.localizedDescription)", preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "Ok", style: .default, handler: nil))
self.present(alert, animated: true)
case let .success(account):
// this needs to happen on the main thread because it publishes a new value for the ObservableObject
let accountInfo = LocalData.shared.addAccount(instanceURL: instanceURL, clientID: clientID, clientSecret: clientSecret, username: account.username, accessToken: accessToken)
mastodonController.accountInfo = accountInfo
self.onboardingDelegate?.didFinishOnboarding(account: accountInfo)
}
}
private func doAuthenticationSession(url: URL) async throws -> URL {
return try await withCheckedThrowingContinuation { continuation in
self.authenticationSession = ASWebAuthenticationSession(url: url, callbackURLScheme: "tusker") { url, error in
defer {
DispatchQueue.main.async {
self.authenticationSession = nil
}
}
if let url = url {
continuation.resume(returning: url)
} else {
continuation.resume(throwing: error!)
}
}
DispatchQueue.main.async {
// Prefer ephemeral sessions to make it easier to sign into multiple accounts on the same instance.
@ -97,6 +64,53 @@ extension OnboardingViewController: InstanceSelectorTableViewControllerDelegate
}
}
}
}
extension OnboardingViewController: InstanceSelectorTableViewControllerDelegate {
func didSelectInstance(url instanceURL: URL) {
async {
let mastodonController = MastodonController(instanceURL: instanceURL)
let (clientID, clientSecret) = await mastodonController.registerApp()
var components = URLComponents(url: instanceURL, resolvingAgainstBaseURL: false)!
components.path = "/oauth/authorize"
components.queryItems = [
URLQueryItem(name: "client_id", value: clientID),
URLQueryItem(name: "response_type", value: "code"),
URLQueryItem(name: "scope", value: "read write follow"),
URLQueryItem(name: "redirect_uri", value: "tusker://oauth")
]
guard let url = try? await self.doAuthenticationSession(url: components.url!),
let components = URLComponents(url: url, resolvingAgainstBaseURL: true),
let item = components.queryItems?.first(where: { $0.name == "code" }),
let authCode = item.value else {
return
}
let accessToken = await mastodonController.authorize(authorizationCode: authCode)
// construct a temporary UserAccountInfo instance for the MastodonController to use to fetch its own account
let tempAccountInfo = LocalData.UserAccountInfo(id: "temp", instanceURL: instanceURL, clientID: clientID, clientSecret: clientSecret, username: nil, accessToken: accessToken)
mastodonController.accountInfo = tempAccountInfo
let account: Account
do {
account = try await mastodonController.getOwnAccount()
} catch {
let alert = UIAlertController(title: "Unable to Verify Credentials", message: "Your account fcould not be fetcheda this time: \(error.localizedDescription)", preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "Ok", style: .default, handler: nil))
self.present(alert, animated: true)
return
}
let accountInfo = LocalData.shared.addAccount(instanceURL: instanceURL, clientID: clientID, clientSecret: clientSecret, username: account.username, accessToken: accessToken)
mastodonController.accountInfo = accountInfo
self.onboardingDelegate?.didFinishOnboarding(account: accountInfo)
}
}
}
extension OnboardingViewController: ASWebAuthenticationPresentationContextProviding {