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