metatext-app-ios-iphone-ipad/Services/IdentityService.swift

169 lines
6.4 KiB
Swift

// Copyright © 2020 Metabolist. All rights reserved.
import Foundation
import Combine
class IdentityService {
@Published private(set) var identity: Identity
let observationErrors: AnyPublisher<Error, Never>
private let identityDatabase: IdentityDatabase
private let contentDatabase: ContentDatabase
private let environment: AppEnvironment
private let networkClient: MastodonClient
private let secretsService: SecretsService
private let observationErrorsInput = PassthroughSubject<Error, Never>()
init(identityID: UUID,
identityDatabase: IdentityDatabase,
environment: AppEnvironment) throws {
self.identityDatabase = identityDatabase
self.environment = environment
observationErrors = observationErrorsInput.eraseToAnyPublisher()
let observation = identityDatabase.identityObservation(id: identityID).share()
var initialIdentity: Identity?
_ = observation.first().sink(
receiveCompletion: { _ in },
receiveValue: { initialIdentity = $0 })
guard let identity = initialIdentity else { throw IdentityDatabaseError.identityNotFound }
self.identity = identity
secretsService = SecretsService(
identityID: identityID,
keychainService: environment.keychainServiceType)
networkClient = MastodonClient(environment: environment)
networkClient.instanceURL = identity.url
networkClient.accessToken = try? secretsService.item(.accessToken)
contentDatabase = try ContentDatabase(identityID: identityID, environment: environment)
observation.catch { [weak self] error -> Empty<Identity, Never> in
self?.observationErrorsInput.send(error)
return Empty()
}
.assign(to: &$identity)
}
}
extension IdentityService {
var isAuthorized: Bool { networkClient.accessToken != nil }
func updateLastUse() -> AnyPublisher<Never, Error> {
identityDatabase.updateLastUsedAt(identityID: identity.id)
}
func verifyCredentials() -> AnyPublisher<Never, Error> {
networkClient.request(AccountEndpoint.verifyCredentials)
.zip(Just(identity.id).first().setFailureType(to: Error.self))
.flatMap(identityDatabase.updateAccount)
.eraseToAnyPublisher()
}
func refreshServerPreferences() -> AnyPublisher<Never, Error> {
networkClient.request(PreferencesEndpoint.preferences)
.zip(Just(self).first().setFailureType(to: Error.self))
.map { ($1.identity.preferences.updated(from: $0), $1.identity.id) }
.flatMap(identityDatabase.updatePreferences)
.eraseToAnyPublisher()
}
func refreshInstance() -> AnyPublisher<Never, Error> {
networkClient.request(InstanceEndpoint.instance)
.zip(Just(identity.id).first().setFailureType(to: Error.self))
.flatMap(identityDatabase.updateInstance)
.eraseToAnyPublisher()
}
func identitiesObservation() -> AnyPublisher<[Identity], Error> {
identityDatabase.identitiesObservation()
}
func recentIdentitiesObservation() -> AnyPublisher<[Identity], Error> {
identityDatabase.recentIdentitiesObservation(excluding: identity.id)
}
func refreshLists() -> AnyPublisher<Never, Error> {
networkClient.request(ListsEndpoint.lists)
.flatMap(contentDatabase.updateLists(_:))
.eraseToAnyPublisher()
}
func listsObservation() -> AnyPublisher<[Timeline], Error> {
contentDatabase.listsObservation()
}
func createList(title: String) -> AnyPublisher<Never, Error> {
networkClient.request(ListEndpoint.create(title: title))
.flatMap(contentDatabase.createList(_:))
.eraseToAnyPublisher()
}
func deleteList(id: String) -> AnyPublisher<Never, Error> {
networkClient.request(DeletionEndpoint.list(id: id))
.map { _ in id }
.flatMap(contentDatabase.deleteList(id:))
.eraseToAnyPublisher()
}
func updatePreferences(_ preferences: Identity.Preferences) -> AnyPublisher<Never, Error> {
identityDatabase.updatePreferences(preferences, forIdentityID: identity.id)
.zip(Just(self).first().setFailureType(to: Error.self))
.filter { $1.identity.preferences.useServerPostingReadingPreferences }
.map { _ in () }
.flatMap(refreshServerPreferences)
.eraseToAnyPublisher()
}
func createPushSubscription(deviceToken: String, alerts: PushSubscription.Alerts) -> AnyPublisher<Never, Error> {
let publicKey: String
let auth: String
do {
publicKey = try secretsService.generatePushKeyAndReturnPublicKey().base64EncodedString()
auth = try secretsService.generatePushAuth().base64EncodedString()
} catch {
return Fail(error: error).eraseToAnyPublisher()
}
let identityID = identity.id
let endpoint = Self.pushSubscriptionEndpointURL
.appendingPathComponent(deviceToken)
.appendingPathComponent(identityID.uuidString)
return networkClient.request(
PushSubscriptionEndpoint.create(
endpoint: endpoint,
publicKey: publicKey,
auth: auth,
alerts: alerts))
.map { ($0.alerts, deviceToken, identityID) }
.flatMap(identityDatabase.updatePushSubscription(alerts:deviceToken:forIdentityID:))
.eraseToAnyPublisher()
}
func updatePushSubscription(alerts: PushSubscription.Alerts) -> AnyPublisher<Never, Error> {
let identityID = identity.id
return networkClient.request(PushSubscriptionEndpoint.update(alerts: alerts))
.map { ($0.alerts, nil, identityID) }
.flatMap(identityDatabase.updatePushSubscription(alerts:deviceToken:forIdentityID:))
.eraseToAnyPublisher()
}
func service(timeline: Timeline) -> StatusListService {
TimelineService(timeline: timeline, networkClient: networkClient, contentDatabase: contentDatabase)
}
}
private extension IdentityService {
#if DEBUG
static let pushSubscriptionEndpointURL = URL(string: "https://metatext-apns.metabolist.com/push?sandbox=true")!
#else
static let pushSubscriptionEndpointURL = URL(string: "https://metatext-apns.metabolist.com/push")!
#endif
}