165 lines
5.6 KiB
Swift
165 lines
5.6 KiB
Swift
// Copyright © 2020 Metabolist. All rights reserved.
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import Combine
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import DB
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import Foundation
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import Mastodon
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import MastodonAPI
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import Secrets
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public struct AllIdentitiesService {
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public let identitiesCreated: AnyPublisher<Identity.Id, Never>
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private let environment: AppEnvironment
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private let database: IdentityDatabase
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private let identitiesCreatedSubject = PassthroughSubject<Identity.Id, Never>()
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public init(environment: AppEnvironment) throws {
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self.environment = environment
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self.database = try environment.fixtureDatabase ?? IdentityDatabase(
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inMemory: environment.inMemoryContent,
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appGroup: AppEnvironment.appGroup,
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keychain: environment.keychain)
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identitiesCreated = identitiesCreatedSubject.eraseToAnyPublisher()
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}
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}
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public extension AllIdentitiesService {
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enum IdentityCreation {
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case authentication
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case registration(Registration)
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case browsing
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}
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func identityService(id: Identity.Id) throws -> IdentityService {
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try IdentityService(id: id, database: database, environment: environment)
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}
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func immediateMostRecentlyUsedIdentityIdPublisher() -> AnyPublisher<Identity.Id?, Error> {
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database.immediateMostRecentlyUsedIdentityIdPublisher()
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}
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func authenticatedIdentitiesPublisher() -> AnyPublisher<[Identity], Error> {
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database.authenticatedIdentitiesPublisher()
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}
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func mostRecentAuthenticatedIdentity() throws -> Identity? {
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try database.mostRecentAuthenticatedIdentity()
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}
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func createIdentity(url: URL, kind: IdentityCreation) -> AnyPublisher<Never, Error> {
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let id = environment.uuid()
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let secrets = Secrets(identityId: id, keychain: environment.keychain)
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do {
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try secrets.setInstanceURL(url)
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} catch {
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return Fail(error: error).eraseToAnyPublisher()
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}
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let createIdentityPublisher = database.createIdentity(
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id: id,
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url: url,
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authenticated: kind.authenticated,
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pending: kind.pending)
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.ignoreOutput()
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.handleEvents(receiveCompletion: {
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if case .finished = $0 {
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identitiesCreatedSubject.send(id)
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}
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})
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.eraseToAnyPublisher()
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let authenticationPublisher: AnyPublisher<(AppAuthorization, AccessToken), Error>
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switch kind {
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case .authentication:
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authenticationPublisher = AuthenticationService(url: url, environment: environment)
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.authenticate()
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case let .registration(registration):
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authenticationPublisher = AuthenticationService(url: url, environment: environment)
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.register(registration, id: id)
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case .browsing:
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return createIdentityPublisher
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}
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return authenticationPublisher
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.tryMap {
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try secrets.setClientId($0.clientId)
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try secrets.setClientSecret($0.clientSecret)
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try secrets.setAccessToken($1.accessToken)
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}
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.flatMap { createIdentityPublisher }
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.eraseToAnyPublisher()
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}
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func deleteIdentity(id: Identity.Id) -> AnyPublisher<Never, Error> {
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database.deleteIdentity(id: id)
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.collect()
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.tryMap { _ -> AnyPublisher<Never, Error> in
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try ContentDatabase.delete(id: id, appGroup: AppEnvironment.appGroup)
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let secrets = Secrets(identityId: id, keychain: environment.keychain)
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defer { secrets.deleteAllItems() }
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do {
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return MastodonAPIClient(
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session: environment.session,
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instanceURL: try secrets.getInstanceURL())
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.request(EmptyEndpoint.oauthRevoke(
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token: try secrets.getAccessToken(),
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clientId: try secrets.getClientId(),
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clientSecret: try secrets.getClientSecret()))
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.ignoreOutput()
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.eraseToAnyPublisher()
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} catch {
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return Empty().eraseToAnyPublisher()
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}
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}
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.flatMap { $0 }
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.eraseToAnyPublisher()
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}
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func updatePushSubscriptions(deviceToken: Data) -> AnyPublisher<Never, Error> {
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database.fetchIdentitiesWithOutdatedDeviceTokens(deviceToken: deviceToken)
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.tryMap { identities -> [AnyPublisher<Never, Never>] in
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try identities.map {
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try IdentityService(id: $0.id, database: database, environment: environment)
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.createPushSubscription(deviceToken: deviceToken, alerts: $0.pushSubscriptionAlerts)
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.catch { _ in Empty() } // don't want to disrupt pipeline
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.eraseToAnyPublisher()
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}
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}
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.map(Publishers.MergeMany.init)
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.flatMap { $0 }
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.ignoreOutput()
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.eraseToAnyPublisher()
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}
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// Only for use in notification extension
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func identity(id: Identity.Id) throws -> Identity? {
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try database.identity(id: id)
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}
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}
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private extension AllIdentitiesService.IdentityCreation {
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var authenticated: Bool {
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switch self {
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case .authentication, .registration:
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return true
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case .browsing:
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return false
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}
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}
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var pending: Bool {
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switch self {
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case .registration:
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return true
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case .authentication, .browsing:
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return false
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}
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}
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}
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