import Foundation
import Postbox
import SwiftSignalKit
import TelegramApi
import MtProtoKit


public enum AuthorizationCodeRequestError {
    case invalidPhoneNumber
    case limitExceeded
    case generic(info: (Int, String)?)
    case phoneLimitExceeded
    case phoneBanned
    case timeout
    case appOutdated
}

func switchToAuthorizedAccount(transaction: AccountManagerModifier<TelegramAccountManagerTypes>, account: UnauthorizedAccount, isSupportUser: Bool) {
    let nextSortOrder = (transaction.getRecords().map({ record -> Int32 in
        for attribute in record.attributes {
            if case let .sortOrder(sortOrder) = attribute {
                return sortOrder.order
            }
        }
        return 0
    }).max() ?? 0) + 1
    transaction.updateRecord(account.id, { _ in
        var attributes: [TelegramAccountManagerTypes.Attribute] = [
            .environment(AccountEnvironmentAttribute(environment: account.testingEnvironment ? .test : .production)),
            .sortOrder(AccountSortOrderAttribute(order: nextSortOrder))
        ]
        if isSupportUser {
            attributes.append(.supportUserInfo(AccountSupportUserInfo()))
        }
        return AccountRecord(id: account.id, attributes: attributes, temporarySessionId: nil)
    })
    transaction.setCurrentId(account.id)
    transaction.removeAuth()
}

private struct Regex {
    let pattern: String
    let options: NSRegularExpression.Options!

    private var matcher: NSRegularExpression {
        return try! NSRegularExpression(pattern: self.pattern, options: self.options)
    }

    init(_ pattern: String) {
        self.pattern = pattern
        self.options = []
    }

    func match(_ string: String, options: NSRegularExpression.MatchingOptions = []) -> Bool {
        return self.matcher.numberOfMatches(in: string, options: options, range: NSMakeRange(0, string.utf16.count)) != 0
    }
}

private protocol RegularExpressionMatchable {
    func match(_ regex: Regex) -> Bool
}

private struct MatchString: RegularExpressionMatchable {
    private let string: String

    init(_ string: String) {
        self.string = string
    }

    func match(_ regex: Regex) -> Bool {
        return regex.match(self.string)
    }
}

private func ~=<T: RegularExpressionMatchable>(pattern: Regex, matchable: T) -> Bool {
    return matchable.match(pattern)
}

public enum SendAuthorizationCodeResult {
    case sentCode(UnauthorizedAccount)
    case loggedIn
}

func storeFutureLoginToken(accountManager: AccountManager<TelegramAccountManagerTypes>, token: Data) {
    let _ = (accountManager.transaction { transaction -> Void in
        var tokens = transaction.getStoredLoginTokens()
        
        #if DEBUG
        tokens.removeAll()
        #endif
        
        var cloudValue: [Data] = []
        if let list = NSUbiquitousKeyValueStore.default.object(forKey: "T_SLTokens") as? [String] {
            cloudValue = list.compactMap { string -> Data? in
                guard let stringData = string.data(using: .utf8) else {
                    return nil
                }
                return Data(base64Encoded: stringData)
            }
        }
        for data in cloudValue {
            if !tokens.contains(data) {
                tokens.insert(data, at: 0)
            }
        }
        tokens.insert(token, at: 0)
        if tokens.count > 20 {
            tokens.removeLast(tokens.count - 20)
        }
        
        NSUbiquitousKeyValueStore.default.set(tokens.map { $0.base64EncodedString() }, forKey: "T_SLTokens")
        NSUbiquitousKeyValueStore.default.synchronize()
        
        transaction.setStoredLoginTokens(tokens)
    }).start()
}

public struct AuthorizationCodePushNotificationConfiguration {
    public var token: String
    public var isSandbox: Bool
    
    public init(token: String, isSandbox: Bool) {
        self.token = token
        self.isSandbox = isSandbox
    }
}

enum SendFirebaseAuthorizationCodeError {
    case generic
}

private func sendFirebaseAuthorizationCode(accountManager: AccountManager<TelegramAccountManagerTypes>, account: UnauthorizedAccount, phoneNumber: String, apiId: Int32, apiHash: String, phoneCodeHash: String, timeout: Int32?, firebaseSecret: String, syncContacts: Bool) -> Signal<Bool, SendFirebaseAuthorizationCodeError> {
    //auth.requestFirebaseSms#89464b50 flags:# phone_number:string phone_code_hash:string safety_net_token:flags.0?string ios_push_secret:flags.1?string = Bool;
    var flags: Int32 = 0
    flags |= 1 << 1
    return account.network.request(Api.functions.auth.requestFirebaseSms(flags: flags, phoneNumber: phoneNumber, phoneCodeHash: phoneCodeHash, playIntegrityToken: nil, iosPushSecret: firebaseSecret))
    |> mapError { _ -> SendFirebaseAuthorizationCodeError in
        return .generic
    }
    |> mapToSignal { result -> Signal<Bool, SendFirebaseAuthorizationCodeError> in
        return .single(true)
    }
}

public func sendAuthorizationCode(accountManager: AccountManager<TelegramAccountManagerTypes>, account: UnauthorizedAccount, phoneNumber: String, apiId: Int32, apiHash: String, pushNotificationConfiguration: AuthorizationCodePushNotificationConfiguration?, firebaseSecretStream: Signal<[String: String], NoError>, syncContacts: Bool, disableAuthTokens: Bool = false, forcedPasswordSetupNotice: @escaping (Int32) -> (NoticeEntryKey, CodableEntry)?) -> Signal<SendAuthorizationCodeResult, AuthorizationCodeRequestError> {
    var cloudValue: [Data] = []
    if let list = NSUbiquitousKeyValueStore.default.object(forKey: "T_SLTokens") as? [String] {
        cloudValue = list.compactMap { string -> Data? in
            guard let stringData = string.data(using: .utf8) else {
                return nil
            }
            return Data(base64Encoded: stringData)
        }
    }
    return accountManager.transaction { transaction -> [Data] in
        return transaction.getStoredLoginTokens()
    }
    |> castError(AuthorizationCodeRequestError.self)
    |> mapToSignal { localAuthTokens -> Signal<SendAuthorizationCodeResult, AuthorizationCodeRequestError> in
        var authTokens = localAuthTokens
        
        for data in cloudValue {
            if !authTokens.contains(data) {
                authTokens.insert(data, at: 0)
            }
        }
        
        if disableAuthTokens {
            authTokens.removeAll()
        }
        
#if DEBUG
        authTokens.removeAll()
#endif
        
        var flags: Int32 = 0
        flags |= 1 << 5 //allowMissedCall
        flags |= 1 << 6 //tokens
        
        var token: String?
        var appSandbox: Api.Bool?
        if let pushNotificationConfiguration = pushNotificationConfiguration {
            flags |= 1 << 7
            flags |= 1 << 8
            token = pushNotificationConfiguration.token
            appSandbox = pushNotificationConfiguration.isSandbox ? .boolTrue : .boolFalse
        }
        
        let sendCode = Api.functions.auth.sendCode(phoneNumber: phoneNumber, apiId: apiId, apiHash: apiHash, settings: .codeSettings(flags: flags, logoutTokens: authTokens.map { Buffer(data: $0) }, token: token, appSandbox: appSandbox))
        
        enum SendCodeResult {
            case password(hint: String?)
            case sentCode(Api.auth.SentCode)
        }
        
        let codeAndAccount = account.network.request(sendCode, automaticFloodWait: false)
        |> map { result -> (SendCodeResult, UnauthorizedAccount) in
            return (.sentCode(result), account)
        }
        |> `catch` { error -> Signal<(SendCodeResult, UnauthorizedAccount), MTRpcError> in
            switch MatchString(error.errorDescription ?? "") {
                case Regex("(PHONE_|USER_|NETWORK_)MIGRATE_(\\d+)"):
                    let range = error.errorDescription.range(of: "MIGRATE_")!
                    let updatedMasterDatacenterId = Int32(error.errorDescription[range.upperBound ..< error.errorDescription.endIndex])!
                    let updatedAccount = account.changedMasterDatacenterId(accountManager: accountManager, masterDatacenterId: updatedMasterDatacenterId)
                    return updatedAccount
                    |> mapToSignalPromotingError { updatedAccount -> Signal<(SendCodeResult, UnauthorizedAccount), MTRpcError> in
                        return updatedAccount.network.request(sendCode, automaticFloodWait: false)
                        |> map { sentCode in
                            return (.sentCode(sentCode), updatedAccount)
                        }
                        |> `catch` { error -> Signal<(SendCodeResult, UnauthorizedAccount), MTRpcError> in
                            if error.errorDescription == "SESSION_PASSWORD_NEEDED" {
                                return updatedAccount.network.request(Api.functions.account.getPassword(), automaticFloodWait: false)
                                |> mapToSignal { result -> Signal<(SendCodeResult, UnauthorizedAccount), MTRpcError> in
                                    switch result {
                                    case let .password(_, _, _, _, hint, _, _, _, _, _, _):
                                        return .single((.password(hint: hint), updatedAccount))
                                    }
                                }
                            } else {
                                return .fail(error)
                            }
                        }
                    }
                case _:
                    return .fail(error)
            }
        }
        |> `catch` { error -> Signal<(SendCodeResult, UnauthorizedAccount), AuthorizationCodeRequestError> in
            if error.errorDescription.hasPrefix("FLOOD_WAIT") {
                return .fail(.limitExceeded)
            } else if error.errorDescription == "PHONE_NUMBER_INVALID" {
                return .fail(.invalidPhoneNumber)
            } else if error.errorDescription == "PHONE_NUMBER_FLOOD" {
                return .fail(.phoneLimitExceeded)
            } else if error.errorDescription == "PHONE_NUMBER_BANNED" {
                return .fail(.phoneBanned)
            } else if error.errorDescription == "UPDATE_APP_TO_LOGIN" {
                return .fail(.appOutdated)
            } else if error.errorDescription == "SESSION_PASSWORD_NEEDED" {
                return account.network.request(Api.functions.account.getPassword(), automaticFloodWait: false)
                |> mapError { error -> AuthorizationCodeRequestError in
                    if error.errorDescription.hasPrefix("FLOOD_WAIT") {
                        return .limitExceeded
                    } else {
                        return .generic(info: (Int(error.errorCode), error.errorDescription))
                    }
                }
                |> mapToSignal { result -> Signal<(SendCodeResult, UnauthorizedAccount), AuthorizationCodeRequestError> in
                    switch result {
                    case let .password(_, _, _, _, hint, _, _, _, _, _, _):
                        return .single((.password(hint: hint), account))
                    }
                }
            } else {
                return .fail(.generic(info: (Int(error.errorCode), error.errorDescription)))
            }
        }
        |> timeout(20.0, queue: Queue.concurrentDefaultQueue(), alternate: .fail(.timeout))
        
        return codeAndAccount
        |> mapToSignal { result, account -> Signal<SendAuthorizationCodeResult, AuthorizationCodeRequestError> in
            return account.postbox.transaction { transaction -> Signal<SendAuthorizationCodeResult, AuthorizationCodeRequestError> in
                switch result {
                case let .password(hint):
                    transaction.setState(UnauthorizedAccountState(isTestingEnvironment: account.testingEnvironment, masterDatacenterId: account.masterDatacenterId, contents: .passwordEntry(hint: hint ?? "", number: nil, code: nil, suggestReset: false, syncContacts: syncContacts)))
                    return .single(.sentCode(account))
                case let .sentCode(sentCode):
                    switch sentCode {
                    case let .sentCode(_, type, phoneCodeHash, nextType, codeTimeout):
                        let parsedType = SentAuthorizationCodeType(apiType: type)
                        var parsedNextType: AuthorizationCodeNextType?
                        if let nextType = nextType {
                            parsedNextType = AuthorizationCodeNextType(apiType: nextType)
                        }
                        
                        if case let .sentCodeTypeFirebaseSms(_, _, receipt, pushTimeout, _) = type {
                            return firebaseSecretStream
                            |> map { mapping -> String? in
                                guard let receipt = receipt else {
                                    return nil
                                }
                                if let value = mapping[receipt] {
                                    return value
                                }
                                if receipt == "" && mapping.count == 1 {
                                    return mapping.first?.value
                                }
                                return nil
                            }
                            |> filter { $0 != nil }
                            |> take(1)
                            |> timeout(Double(pushTimeout ?? 15), queue: .mainQueue(), alternate: .single(nil))
                            |> castError(AuthorizationCodeRequestError.self)
                            |> mapToSignal { firebaseSecret -> Signal<SendAuthorizationCodeResult, AuthorizationCodeRequestError> in
                                guard let firebaseSecret = firebaseSecret else {
                                    return internalResendAuthorizationCode(accountManager: accountManager, account: account, number: phoneNumber, apiId: apiId, apiHash: apiHash, hash: phoneCodeHash, syncContacts: syncContacts, firebaseSecretStream: firebaseSecretStream)
                                }
                                
                                return sendFirebaseAuthorizationCode(accountManager: accountManager, account: account, phoneNumber: phoneNumber, apiId: apiId, apiHash: apiHash, phoneCodeHash: phoneCodeHash, timeout: codeTimeout, firebaseSecret: firebaseSecret, syncContacts: syncContacts)
                                |> `catch` { _ -> Signal<Bool, SendFirebaseAuthorizationCodeError> in
                                    return .single(false)
                                }
                                |> mapError { _ -> AuthorizationCodeRequestError in
                                    return .generic(info: nil)
                                }
                                |> mapToSignal { success -> Signal<SendAuthorizationCodeResult, AuthorizationCodeRequestError> in
                                    if success {
                                        return account.postbox.transaction { transaction -> SendAuthorizationCodeResult in
                                            var previousCodeEntry: UnauthorizedAccountStateContents?
                                            if let state = transaction.getState() as? UnauthorizedAccountState, case let .confirmationCodeEntry(_, type, _, _, _, _, previousCodeEntryValue, _) = state.contents {
                                                if let previousCodeEntryValue {
                                                    previousCodeEntry = previousCodeEntryValue
                                                } else {
                                                    switch type {
                                                    case .word, .phrase:
                                                        previousCodeEntry = state.contents
                                                    default:
                                                        switch parsedType {
                                                        case .word, .phrase:
                                                            previousCodeEntry = state.contents
                                                        default:
                                                            break
                                                        }
                                                    }
                                                }
                                            }
                                            transaction.setState(UnauthorizedAccountState(isTestingEnvironment: account.testingEnvironment, masterDatacenterId: account.masterDatacenterId, contents: .confirmationCodeEntry(number: phoneNumber, type: parsedType, hash: phoneCodeHash, timeout: codeTimeout, nextType: parsedNextType, syncContacts: syncContacts, previousCodeEntry: previousCodeEntry, usePrevious: false)))
                                            
                                            return .sentCode(account)
                                        }
                                        |> castError(AuthorizationCodeRequestError.self)
                                    } else {
                                        return internalResendAuthorizationCode(accountManager: accountManager, account: account, number: phoneNumber, apiId: apiId, apiHash: apiHash, hash: phoneCodeHash, syncContacts: syncContacts, firebaseSecretStream: firebaseSecretStream)
                                    }
                                }
                            }
                        }
                                                
                        var previousCodeEntry: UnauthorizedAccountStateContents?
                        if let state = transaction.getState() as? UnauthorizedAccountState, case let .confirmationCodeEntry(_, type, _, _, _, _, previousCodeEntryValue, _) = state.contents {
                            if let previousCodeEntryValue {
                                previousCodeEntry = previousCodeEntryValue
                            } else {
                                switch type {
                                case .word, .phrase:
                                    previousCodeEntry = state.contents
                                default:
                                    switch parsedType {
                                    case .word, .phrase:
                                        previousCodeEntry = state.contents
                                    default:
                                        break
                                    }
                                }
                            }
                        }
                        transaction.setState(UnauthorizedAccountState(isTestingEnvironment: account.testingEnvironment, masterDatacenterId: account.masterDatacenterId, contents: .confirmationCodeEntry(number: phoneNumber, type: parsedType, hash: phoneCodeHash, timeout: codeTimeout, nextType: parsedNextType, syncContacts: syncContacts, previousCodeEntry: previousCodeEntry, usePrevious: false)))
                    case let .sentCodeSuccess(authorization):
                        switch authorization {
                        case let .authorization(_, otherwiseReloginDays, _, futureAuthToken, user):
                            if let futureAuthToken = futureAuthToken {
                                storeFutureLoginToken(accountManager: accountManager, token: futureAuthToken.makeData())
                            }
                            
                            let user = TelegramUser(user: user)
                            var isSupportUser = false
                            if let phone = user.phone, phone.hasPrefix("42") {
                                isSupportUser = true
                            }
                            let state = AuthorizedAccountState(isTestingEnvironment: account.testingEnvironment, masterDatacenterId: account.masterDatacenterId, peerId: user.id, state: nil, invalidatedChannels: [])
                            initializedAppSettingsAfterLogin(transaction: transaction, appVersion: account.networkArguments.appVersion, syncContacts: syncContacts)
                            transaction.setState(state)
                            if let otherwiseReloginDays = otherwiseReloginDays, let value = forcedPasswordSetupNotice(otherwiseReloginDays) {
                                transaction.setNoticeEntry(key: value.0, value: value.1)
                            }
                            return accountManager.transaction { transaction -> SendAuthorizationCodeResult in
                                switchToAuthorizedAccount(transaction: transaction, account: account, isSupportUser: isSupportUser)
                                return .loggedIn
                            }
                            |> castError(AuthorizationCodeRequestError.self)
                        case .authorizationSignUpRequired:
                            return .never()
                        }
                    }
                    return .single(.sentCode(account))
                }
            }
            |> mapError { _ -> AuthorizationCodeRequestError in
            }
            |> switchToLatest
        }
    }
}

private func internalResendAuthorizationCode(accountManager: AccountManager<TelegramAccountManagerTypes>, account: UnauthorizedAccount, number: String, apiId: Int32, apiHash: String, hash: String, syncContacts: Bool, firebaseSecretStream: Signal<[String: String], NoError>) -> Signal<SendAuthorizationCodeResult, AuthorizationCodeRequestError> {
    return account.network.request(Api.functions.auth.resendCode(phoneNumber: number, phoneCodeHash: hash), automaticFloodWait: false)
    |> mapError { error -> AuthorizationCodeRequestError in
        if error.errorDescription.hasPrefix("FLOOD_WAIT") {
            return .limitExceeded
        } else if error.errorDescription == "PHONE_NUMBER_INVALID" {
            return .invalidPhoneNumber
        } else if error.errorDescription == "PHONE_NUMBER_FLOOD" {
            return .phoneLimitExceeded
        } else if error.errorDescription == "PHONE_NUMBER_BANNED" {
            return .phoneBanned
        } else if error.errorDescription == "UPDATE_APP_TO_LOGIN" {
            return .appOutdated
        } else {
            return .generic(info: (Int(error.errorCode), error.errorDescription))
        }
    }
    |> mapToSignal { sentCode -> Signal<SendAuthorizationCodeResult, AuthorizationCodeRequestError> in
        return account.postbox.transaction { transaction -> Signal<SendAuthorizationCodeResult, AuthorizationCodeRequestError> in
            switch sentCode {
            case let .sentCode(_, type, phoneCodeHash, nextType, codeTimeout):
                let parsedType = SentAuthorizationCodeType(apiType: type)
                var parsedNextType: AuthorizationCodeNextType?
                if let nextType = nextType {
                    parsedNextType = AuthorizationCodeNextType(apiType: nextType)
                }
                
                if case let .sentCodeTypeFirebaseSms(_, _, receipt, pushTimeout, _) = type {
                    return firebaseSecretStream
                    |> map { mapping -> String? in
                        guard let receipt = receipt else {
                            return nil
                        }
                        if let value = mapping[receipt] {
                            return value
                        }
                        if receipt == "" && mapping.count == 1 {
                            return mapping.first?.value
                        }
                        return nil
                    }
                    |> filter { $0 != nil }
                    |> take(1)
                    |> timeout(Double(pushTimeout ?? 15), queue: .mainQueue(), alternate: .single(nil))
                    |> castError(AuthorizationCodeRequestError.self)
                    |> mapToSignal { firebaseSecret -> Signal<SendAuthorizationCodeResult, AuthorizationCodeRequestError> in
                        guard let firebaseSecret = firebaseSecret else {
                            return internalResendAuthorizationCode(accountManager: accountManager, account: account, number: number, apiId: apiId, apiHash: apiHash, hash: phoneCodeHash, syncContacts: syncContacts, firebaseSecretStream: firebaseSecretStream)
                        }
                        
                        return sendFirebaseAuthorizationCode(accountManager: accountManager, account: account, phoneNumber: number, apiId: apiId, apiHash: apiHash, phoneCodeHash: phoneCodeHash, timeout: codeTimeout, firebaseSecret: firebaseSecret, syncContacts: syncContacts)
                        |> `catch` { _ -> Signal<Bool, SendFirebaseAuthorizationCodeError> in
                            return .single(false)
                        }
                        |> mapError { _ -> AuthorizationCodeRequestError in
                            return .generic(info: nil)
                        }
                        |> mapToSignal { success -> Signal<SendAuthorizationCodeResult, AuthorizationCodeRequestError> in
                            if success {
                                return account.postbox.transaction { transaction -> SendAuthorizationCodeResult in
                                    var previousCodeEntry: UnauthorizedAccountStateContents?
                                    if let state = transaction.getState() as? UnauthorizedAccountState, case let .confirmationCodeEntry(_, type, _, _, _, _, previousCodeEntryValue, _) = state.contents {
                                        if let previousCodeEntryValue {
                                            previousCodeEntry = previousCodeEntryValue
                                        } else {
                                            switch type {
                                            case .word, .phrase:
                                                previousCodeEntry = state.contents
                                            default:
                                                switch parsedType {
                                                case .word, .phrase:
                                                    previousCodeEntry = state.contents
                                                default:
                                                    break
                                                }
                                            }
                                        }
                                    }
                                    transaction.setState(UnauthorizedAccountState(isTestingEnvironment: account.testingEnvironment, masterDatacenterId: account.masterDatacenterId, contents: .confirmationCodeEntry(number: number, type: parsedType, hash: phoneCodeHash, timeout: codeTimeout, nextType: parsedNextType, syncContacts: syncContacts, previousCodeEntry: previousCodeEntry, usePrevious: false)))
                                    
                                    return .sentCode(account)
                                }
                                |> castError(AuthorizationCodeRequestError.self)
                            } else {
                                return internalResendAuthorizationCode(accountManager: accountManager, account: account, number: number, apiId: apiId, apiHash: apiHash, hash: phoneCodeHash, syncContacts: syncContacts, firebaseSecretStream: firebaseSecretStream)
                            }
                        }
                    }
                }
                
                var previousCodeEntry: UnauthorizedAccountStateContents?
                if let state = transaction.getState() as? UnauthorizedAccountState, case let .confirmationCodeEntry(_, type, _, _, _, _, previousCodeEntryValue, _) = state.contents {
                    if let previousCodeEntryValue {
                        previousCodeEntry = previousCodeEntryValue
                    } else {
                        switch type {
                        case .word, .phrase:
                            previousCodeEntry = state.contents
                        default:
                            switch parsedType {
                            case .word, .phrase:
                                previousCodeEntry = state.contents
                            default:
                                break
                            }
                        }
                    }
                }
                transaction.setState(UnauthorizedAccountState(isTestingEnvironment: account.testingEnvironment, masterDatacenterId: account.masterDatacenterId, contents: .confirmationCodeEntry(number: number, type: SentAuthorizationCodeType(apiType: type), hash: phoneCodeHash, timeout: codeTimeout, nextType: parsedNextType, syncContacts: syncContacts, previousCodeEntry: previousCodeEntry, usePrevious: false)))
                
                return .single(.sentCode(account))
            case .sentCodeSuccess:
                return .single(.loggedIn)
            }
        }
        |> mapError { _ -> AuthorizationCodeRequestError in }
        |> switchToLatest
    }
}

public func resendAuthorizationCode(accountManager: AccountManager<TelegramAccountManagerTypes>, account: UnauthorizedAccount, apiId: Int32, apiHash: String, firebaseSecretStream: Signal<[String: String], NoError>) -> Signal<Void, AuthorizationCodeRequestError> {
    return account.postbox.transaction { transaction -> Signal<Void, AuthorizationCodeRequestError> in
        if let state = transaction.getState() as? UnauthorizedAccountState {
            switch state.contents {
                case let .confirmationCodeEntry(number, type, hash, _, nextType, syncContacts, previousCodeEntryValue, _):
                    if nextType != nil {
                        return account.network.request(Api.functions.auth.resendCode(phoneNumber: number, phoneCodeHash: hash), automaticFloodWait: false)
                        |> mapError { error -> AuthorizationCodeRequestError in
                            if error.errorDescription.hasPrefix("FLOOD_WAIT") {
                                return .limitExceeded
                            } else if error.errorDescription == "PHONE_NUMBER_INVALID" {
                                return .invalidPhoneNumber
                            } else if error.errorDescription == "PHONE_NUMBER_FLOOD" {
                                return .phoneLimitExceeded
                            } else if error.errorDescription == "PHONE_NUMBER_BANNED" {
                                return .phoneBanned
                            } else if error.errorDescription == "UPDATE_APP_TO_LOGIN" {
                                return .appOutdated
                            } else {
                                return .generic(info: (Int(error.errorCode), error.errorDescription))
                            }
                        }
                        |> mapToSignal { sentCode -> Signal<Void, AuthorizationCodeRequestError> in
                            return account.postbox.transaction { transaction -> Signal<Void, AuthorizationCodeRequestError> in
                                switch sentCode {
                                case let .sentCode(_, newType, phoneCodeHash, nextType, codeTimeout):
                                    let parsedType = SentAuthorizationCodeType(apiType: newType)
                                    var previousCodeEntry: UnauthorizedAccountStateContents?
                                    if let previousCodeEntryValue {
                                        previousCodeEntry = previousCodeEntryValue
                                    } else {
                                        switch type {
                                        case .word, .phrase:
                                            previousCodeEntry = state.contents
                                        default:
                                            switch parsedType {
                                            case .word, .phrase:
                                                previousCodeEntry = state.contents
                                            default:
                                                break
                                            }
                                        }
                                    }
                                    
                                    var parsedNextType: AuthorizationCodeNextType?
                                    if let nextType = nextType {
                                        parsedNextType = AuthorizationCodeNextType(apiType: nextType)
                                    }
                                    
                                    if case let .sentCodeTypeFirebaseSms(_, _, receipt, pushTimeout, _) = newType {
                                        return firebaseSecretStream
                                        |> map { mapping -> String? in
                                            guard let receipt = receipt else {
                                                return nil
                                            }
                                            if let value = mapping[receipt] {
                                                return value
                                            }
                                            if receipt == "" && mapping.count == 1 {
                                                return mapping.first?.value
                                            }
                                            return nil
                                        }
                                        |> filter { $0 != nil }
                                        |> take(1)
                                        |> timeout(Double(pushTimeout ?? 15), queue: .mainQueue(), alternate: .single(nil))
                                        |> castError(AuthorizationCodeRequestError.self)
                                        |> mapToSignal { firebaseSecret -> Signal<SendAuthorizationCodeResult, AuthorizationCodeRequestError> in
                                            guard let firebaseSecret = firebaseSecret else {
                                                return internalResendAuthorizationCode(accountManager: accountManager, account: account, number: number, apiId: apiId, apiHash: apiHash, hash: phoneCodeHash, syncContacts: syncContacts, firebaseSecretStream: firebaseSecretStream)
                                            }
                                            
                                            return sendFirebaseAuthorizationCode(accountManager: accountManager, account: account, phoneNumber: number, apiId: apiId, apiHash: apiHash, phoneCodeHash: phoneCodeHash, timeout: codeTimeout, firebaseSecret: firebaseSecret, syncContacts: syncContacts)
                                            |> `catch` { _ -> Signal<Bool, SendFirebaseAuthorizationCodeError> in
                                                return .single(false)
                                            }
                                            |> mapError { _ -> AuthorizationCodeRequestError in
                                                return .generic(info: nil)
                                            }
                                            |> mapToSignal { success -> Signal<SendAuthorizationCodeResult, AuthorizationCodeRequestError> in
                                                if success {
                                                    return account.postbox.transaction { transaction -> SendAuthorizationCodeResult in
                                                        transaction.setState(UnauthorizedAccountState(isTestingEnvironment: account.testingEnvironment, masterDatacenterId: account.masterDatacenterId, contents: .confirmationCodeEntry(number: number, type: parsedType, hash: phoneCodeHash, timeout: codeTimeout, nextType: parsedNextType, syncContacts: syncContacts, previousCodeEntry: previousCodeEntry, usePrevious: false)))
                                                        
                                                        return .sentCode(account)
                                                    }
                                                    |> castError(AuthorizationCodeRequestError.self)
                                                } else {
                                                    return internalResendAuthorizationCode(accountManager: accountManager, account: account, number: number, apiId: apiId, apiHash: apiHash, hash: phoneCodeHash, syncContacts: syncContacts, firebaseSecretStream: firebaseSecretStream)
                                                }
                                            }
                                        }
                                        |> map { _ -> Void in return Void() }
                                    }
                                    
                                    transaction.setState(UnauthorizedAccountState(isTestingEnvironment: account.testingEnvironment, masterDatacenterId: account.masterDatacenterId, contents: .confirmationCodeEntry(number: number, type: parsedType, hash: phoneCodeHash, timeout: codeTimeout, nextType: parsedNextType, syncContacts: syncContacts, previousCodeEntry: previousCodeEntry, usePrevious: false)))
                                case .sentCodeSuccess:
                                    break
                                }
                                return .single(Void())
                            }
                            |> mapError { _ -> AuthorizationCodeRequestError in }
                            |> switchToLatest
                        }
                    } else {
                        return .fail(.generic(info: nil))
                    }
                default:
                    return .complete()
            }
        } else {
            return .fail(.generic(info: nil))
        }
    }
    |> mapError { _ -> AuthorizationCodeRequestError in
    }
    |> switchToLatest
}

public enum AuthorizationCodeVerificationError {
    case invalidCode
    case limitExceeded
    case generic
    case codeExpired
    case invalidEmailToken
    case invalidEmailAddress
}

private enum AuthorizationCodeResult {
    case authorization(Api.auth.Authorization)
    case password(hint: String)
    case signUp
}

public enum AuthorizationCode: PostboxCoding, Equatable {
    private enum CodeType: Int32 {
        case phoneCode = 0
        case emailCode = 1
        case appleToken = 2
        case googleToken = 3
    }
    
    public enum EmailVerification: Equatable {
        case emailCode(String)
        case appleToken(String)
        case googleToken(String)
    }
    
    case phoneCode(String)
    case emailVerification(EmailVerification)
    
    public init(decoder: PostboxDecoder) {
        let type = decoder.decodeInt32ForKey("t", orElse: 0)
        switch type {
            case CodeType.phoneCode.rawValue:
                self = .phoneCode(decoder.decodeStringForKey("c", orElse: ""))
            case CodeType.emailCode.rawValue:
                self = .emailVerification(.emailCode(decoder.decodeStringForKey("c", orElse: "")))
            case CodeType.appleToken.rawValue:
                self = .emailVerification(.appleToken(decoder.decodeStringForKey("c", orElse: "")))
            case CodeType.googleToken.rawValue:
                self = .emailVerification(.googleToken(decoder.decodeStringForKey("c", orElse: "")))
            default:
                assertionFailure()
                self = .phoneCode("")
        }
    }
    
    public func encode(_ encoder: PostboxEncoder) {
        switch self {
            case let .phoneCode(code):
                encoder.encodeInt32(CodeType.phoneCode.rawValue, forKey: "t")
                encoder.encodeString(code, forKey: "c")
            case let .emailVerification(verification):
                switch verification {
                    case let .emailCode(code):
                        encoder.encodeInt32(CodeType.emailCode.rawValue, forKey: "t")
                        encoder.encodeString(code, forKey: "c")
                    case let .appleToken(token):
                        encoder.encodeInt32(CodeType.appleToken.rawValue, forKey: "t")
                        encoder.encodeString(token, forKey: "c")
                    case let .googleToken(token):
                        encoder.encodeInt32(CodeType.googleToken.rawValue, forKey: "t")
                        encoder.encodeString(token, forKey: "c")
                }
        }
    }
}

public struct AuthorizationSignUpData {
    let number: String
    let codeHash: String
    let code: AuthorizationCode
    let termsOfService: UnauthorizedAccountTermsOfService?
    let syncContacts: Bool
}

public enum AuthorizeWithCodeResult {
    case signUp(AuthorizationSignUpData)
    case loggedIn
}

public enum AuthorizationSendEmailCodeError {
    case generic
    case limitExceeded
    case codeExpired
    case timeout
    case invalidEmail
    case emailNotAllowed
}

public enum AuthorizationEmailVerificationError {
    case generic
    case limitExceeded
    case codeExpired
    case invalidCode
    case timeout
    case invalidEmailToken
    case emailNotAllowed
}

public struct ChangeLoginEmailData: Equatable {
    public let email: String
    public let length: Int32
}

public func sendLoginEmailChangeCode(account: Account, email: String) -> Signal<ChangeLoginEmailData, AuthorizationSendEmailCodeError> {
    return account.network.request(Api.functions.account.sendVerifyEmailCode(purpose: .emailVerifyPurposeLoginChange, email: email), automaticFloodWait: false)
    |> `catch` { error -> Signal<Api.account.SentEmailCode, AuthorizationSendEmailCodeError> in
        let errorDescription = error.errorDescription ?? ""
        if errorDescription.hasPrefix("FLOOD_WAIT") {
            return .fail(.limitExceeded)
        } else if errorDescription == "CODE_HASH_EXPIRED" || errorDescription == "PHONE_CODE_EXPIRED" {
            return .fail(.codeExpired)
        } else if errorDescription.hasPrefix("EMAIL_INVALID") {
            return .fail(.invalidEmail)
        } else if errorDescription.hasPrefix("EMAIL_NOT_ALLOWED") {
            return .fail(.emailNotAllowed)
        } else {
            return .fail(.generic)
        }
    }
    |> map { result -> ChangeLoginEmailData in
        switch result {
            case let .sentEmailCode(_, length):
                return ChangeLoginEmailData(email: email, length: length)
        }
    }
}

public func sendLoginEmailCode(account: UnauthorizedAccount, email: String) -> Signal<Never, AuthorizationSendEmailCodeError> {
    return account.postbox.transaction { transaction -> Signal<Never, AuthorizationSendEmailCodeError> in
        if let state = transaction.getState() as? UnauthorizedAccountState {
            switch state.contents {
                case let .confirmationCodeEntry(phoneNumber, _, phoneCodeHash, _, _, syncContacts, _, _):
                    return account.network.request(Api.functions.account.sendVerifyEmailCode(purpose: .emailVerifyPurposeLoginSetup(phoneNumber: phoneNumber, phoneCodeHash: phoneCodeHash), email: email), automaticFloodWait: false)
                    |> `catch` { error -> Signal<Api.account.SentEmailCode, AuthorizationSendEmailCodeError> in
                        let errorDescription = error.errorDescription ?? ""
                        if errorDescription.hasPrefix("FLOOD_WAIT") {
                            return .fail(.limitExceeded)
                        } else if errorDescription == "CODE_HASH_EXPIRED" || errorDescription == "PHONE_CODE_EXPIRED" {
                            return .fail(.codeExpired)
                        } else if errorDescription.hasPrefix("EMAIL_INVALID") {
                            return .fail(.invalidEmail)
                        } else if errorDescription.hasPrefix("EMAIL_NOT_ALLOWED") {
                            return .fail(.emailNotAllowed)
                        } else {
                            return .fail(.generic)
                        }
                    }
                    |> mapToSignal { result -> Signal<Never, AuthorizationSendEmailCodeError> in
                        return account.postbox.transaction { transaction -> Signal<Void, NoError> in
                            switch result {
                            case let .sentEmailCode(emailPattern, length):
                                transaction.setState(UnauthorizedAccountState(isTestingEnvironment: account.testingEnvironment, masterDatacenterId: account.masterDatacenterId, contents: .confirmationCodeEntry(number: phoneNumber, type: .email(emailPattern: emailPattern, length: length, resetAvailablePeriod: nil, resetPendingDate: nil, appleSignInAllowed: false, setup: true), hash: phoneCodeHash, timeout: nil, nextType: nil, syncContacts: syncContacts, previousCodeEntry: nil, usePrevious: false)))
                            }
                            return .complete()
                        }
                        |> switchToLatest
                        |> mapError { _ -> AuthorizationSendEmailCodeError in
                        }
                        |> ignoreValues
                    }
                default:
                    return .fail(.generic)
            }
        } else {
            return .fail(.generic)
        }
    }
    |> mapError { _ -> AuthorizationSendEmailCodeError in
    }
    |> switchToLatest
    |> ignoreValues
}

public func verifyLoginEmailChange(account: Account, code: AuthorizationCode.EmailVerification) -> Signal<Never, AuthorizationEmailVerificationError> {
    let verification: Api.EmailVerification
    switch code {
        case let .emailCode(code):
            verification = .emailVerificationCode(code: code)
        case let .appleToken(token):
            verification = .emailVerificationApple(token: token)
        case let .googleToken(token):
            verification = .emailVerificationGoogle(token: token)
    }

    return account.network.request(Api.functions.account.verifyEmail(purpose: .emailVerifyPurposeLoginChange, verification: verification), automaticFloodWait: false)
    |> `catch` { error -> Signal<Api.account.EmailVerified, AuthorizationEmailVerificationError> in
        let errorDescription = error.errorDescription ?? ""
        if errorDescription.hasPrefix("FLOOD_WAIT") {
            return .fail(.limitExceeded)
        } else if errorDescription == "CODE_HASH_EXPIRED" || errorDescription == "PHONE_CODE_EXPIRED" || errorDescription == "EMAIL_VERIFY_EXPIRED" {
            return .fail(.codeExpired)
        } else if errorDescription == "CODE_INVALID" {
            return .fail(.invalidCode)
        } else if errorDescription == "EMAIL_TOKEN_INVALID" {
            return .fail(.invalidEmailToken)
        } else if errorDescription == "EMAIL_NOT_ALLOWED" {
            return .fail(.emailNotAllowed)
        } else {
            return .fail(.generic)
        }
    }
    |> mapToSignal { _ -> Signal<Never, AuthorizationEmailVerificationError> in
        return .complete()
    }
}

public func verifyLoginEmailSetup(account: UnauthorizedAccount, code: AuthorizationCode.EmailVerification) -> Signal<Never, AuthorizationEmailVerificationError> {
    return account.postbox.transaction { transaction -> Signal<Never, AuthorizationEmailVerificationError> in
        if let state = transaction.getState() as? UnauthorizedAccountState {
            switch state.contents {
                case let .confirmationCodeEntry(phoneNumber, _, phoneCodeHash, _, _, syncContacts, _, _):
                    let verification: Api.EmailVerification
                    switch code {
                        case let .emailCode(code):
                            verification = .emailVerificationCode(code: code)
                        case let .appleToken(token):
                            verification = .emailVerificationApple(token: token)
                        case let .googleToken(token):
                            verification = .emailVerificationGoogle(token: token)
                    }

                    return account.network.request(Api.functions.account.verifyEmail(purpose: .emailVerifyPurposeLoginSetup(phoneNumber: phoneNumber, phoneCodeHash: phoneCodeHash), verification: verification), automaticFloodWait: false)
                    |> `catch` { error -> Signal<Api.account.EmailVerified, AuthorizationEmailVerificationError> in
                        let errorDescription = error.errorDescription ?? ""
                        if errorDescription.hasPrefix("FLOOD_WAIT") {
                            return .fail(.limitExceeded)
                        } else if errorDescription == "CODE_HASH_EXPIRED" || errorDescription == "PHONE_CODE_EXPIRED" || errorDescription == "EMAIL_VERIFY_EXPIRED" {
                            return .fail(.codeExpired)
                        } else if errorDescription == "CODE_INVALID" {
                            return .fail(.invalidCode)
                        } else if errorDescription == "EMAIL_TOKEN_INVALID" {
                            return .fail(.invalidEmailToken)
                        } else if errorDescription == "EMAIL_NOT_ALLOWED" {
                            return .fail(.emailNotAllowed)
                        } else {
                            return .fail(.generic)
                        }
                    }
                    |> mapToSignal { result -> Signal<Never, AuthorizationEmailVerificationError> in
                        return account.postbox.transaction { transaction -> Signal<Void, NoError> in
                            switch result {
                                case let .emailVerifiedLogin(_, sentCode):
                                    switch sentCode {
                                    case let .sentCode(_, type, phoneCodeHash, nextType, timeout):
                                        var parsedNextType: AuthorizationCodeNextType?
                                        if let nextType = nextType {
                                            parsedNextType = AuthorizationCodeNextType(apiType: nextType)
                                        }
                                        
                                        transaction.setState(UnauthorizedAccountState(isTestingEnvironment: account.testingEnvironment, masterDatacenterId: account.masterDatacenterId, contents: .confirmationCodeEntry(number: phoneNumber, type: SentAuthorizationCodeType(apiType: type), hash: phoneCodeHash, timeout: timeout, nextType: parsedNextType, syncContacts: syncContacts, previousCodeEntry: nil, usePrevious: false)))
                                    case .sentCodeSuccess:
                                        break
                                    }
                                case .emailVerified:
                                    break
                            }
                            return .complete()
                        }
                        |> switchToLatest
                        |> mapError { _ -> AuthorizationEmailVerificationError in
                        }
                        |> ignoreValues
                    }
                default:
                    return .fail(.generic)
            }
        } else {
            return .fail(.generic)
        }
    }
    |> mapError { _ -> AuthorizationEmailVerificationError in
    }
    |> switchToLatest
    |> ignoreValues
}

public enum AuthorizationEmailResetError {
    case generic
    case limitExceeded
    case codeExpired
    case alreadyInProgress
}

public func resetLoginEmail(account: UnauthorizedAccount, phoneNumber: String, phoneCodeHash: String) -> Signal<Never, AuthorizationEmailResetError> {
    return account.postbox.transaction { transaction -> Signal<Never, AuthorizationEmailResetError> in
        if let state = transaction.getState() as? UnauthorizedAccountState {
            switch state.contents {
                case let .confirmationCodeEntry(phoneNumber, _, phoneCodeHash, _, _, syncContacts, _, _):
                    return account.network.request(Api.functions.auth.resetLoginEmail(phoneNumber: phoneNumber, phoneCodeHash: phoneCodeHash), automaticFloodWait: false)
                    |> `catch` { error -> Signal<Api.auth.SentCode, AuthorizationEmailResetError> in
                        let errorDescription = error.errorDescription ?? ""
                        if errorDescription.hasPrefix("FLOOD_WAIT") {
                            return .fail(.limitExceeded)
                        } else if errorDescription == "CODE_HASH_EXPIRED" || errorDescription == "PHONE_CODE_EXPIRED" {
                            return .fail(.codeExpired)
                        } else if errorDescription == "TASK_ALREADY_EXISTS" {
                            return .fail(.alreadyInProgress)
                        } else {
                            return .fail(.generic)
                        }
                    }
                    |> mapToSignal { sentCode -> Signal<Never, AuthorizationEmailResetError> in
                        return account.postbox.transaction { transaction -> Signal<Never, NoError> in
                            switch sentCode {
                            case let .sentCode(_, type, phoneCodeHash, nextType, codeTimeout):
                                var parsedNextType: AuthorizationCodeNextType?
                                if let nextType = nextType {
                                    parsedNextType = AuthorizationCodeNextType(apiType: nextType)
                                }
                                
                                transaction.setState(UnauthorizedAccountState(isTestingEnvironment: account.testingEnvironment, masterDatacenterId: account.masterDatacenterId, contents: .confirmationCodeEntry(number: phoneNumber, type: SentAuthorizationCodeType(apiType: type), hash: phoneCodeHash, timeout: codeTimeout, nextType: parsedNextType, syncContacts: syncContacts, previousCodeEntry: nil, usePrevious: false)))
                                
                                return .complete()
                            case .sentCodeSuccess:
                                return .complete()
                            }
                        }
                        |> switchToLatest
                        |> mapError { _ -> AuthorizationEmailResetError in
                        }
                        |> ignoreValues
                    }
                default:
                    return .fail(.generic)
            }
        } else {
            return .fail(.generic)
        }
    }
    |> mapError { _ -> AuthorizationEmailResetError in
    }
    |> switchToLatest
    |> ignoreValues
}

public func authorizeWithCode(accountManager: AccountManager<TelegramAccountManagerTypes>, account: UnauthorizedAccount, code: AuthorizationCode, termsOfService: UnauthorizedAccountTermsOfService?, forcedPasswordSetupNotice: @escaping (Int32) -> (NoticeEntryKey, CodableEntry)?) -> Signal<AuthorizeWithCodeResult, AuthorizationCodeVerificationError> {
    return account.postbox.transaction { transaction -> Signal<AuthorizeWithCodeResult, AuthorizationCodeVerificationError> in
        if let state = transaction.getState() as? UnauthorizedAccountState {
            switch state.contents {
                case let .confirmationCodeEntry(number, _, hash, _, _, syncContacts, _, _):
                    var flags: Int32 = 0
                    var phoneCode: String?
                    var emailVerification: Api.EmailVerification?
                
                    switch code {
                        case let .phoneCode(code):
                            flags = 1 << 0
                            phoneCode = code
                        case let .emailVerification(verification):
                            flags = 1 << 1
                            switch verification {
                                case let .emailCode(code):
                                    emailVerification = .emailVerificationCode(code: code)
                                case let .appleToken(token):
                                    emailVerification = .emailVerificationApple(token: token)
                                case let .googleToken(token):
                                    emailVerification = .emailVerificationGoogle(token: token)
                            }
                    }
                 
                    return account.network.request(Api.functions.auth.signIn(flags: flags, phoneNumber: number, phoneCodeHash: hash, phoneCode: phoneCode, emailVerification: emailVerification), automaticFloodWait: false)
                    |> map { authorization in
                        return .authorization(authorization)
                    }
                    |> `catch` { error -> Signal<AuthorizationCodeResult, AuthorizationCodeVerificationError> in
                        switch (error.errorCode, error.errorDescription ?? "") {
                            case (401, "SESSION_PASSWORD_NEEDED"):
                                return account.network.request(Api.functions.account.getPassword(), automaticFloodWait: false)
                                |> mapError { error -> AuthorizationCodeVerificationError in
                                    if error.errorDescription.hasPrefix("FLOOD_WAIT") {
                                        return .limitExceeded
                                    } else {
                                        return .generic
                                    }
                                }
                                |> mapToSignal { result -> Signal<AuthorizationCodeResult, AuthorizationCodeVerificationError> in
                                    switch result {
                                        case let .password(_, _, _, _, hint, _, _, _, _, _, _):
                                            return .single(.password(hint: hint ?? ""))
                                    }
                                }
                            case let (_, errorDescription):
                                if errorDescription.hasPrefix("FLOOD_WAIT") {
                                    return .fail(.limitExceeded)
                                } else if errorDescription == "PHONE_CODE_INVALID" || errorDescription == "EMAIL_CODE_INVALID" {
                                    return .fail(.invalidCode)
                                } else if errorDescription == "CODE_HASH_EXPIRED" || errorDescription == "PHONE_CODE_EXPIRED" {
                                    return .fail(.codeExpired)
                                } else if errorDescription == "PHONE_NUMBER_UNOCCUPIED" {
                                    return .single(.signUp)
                                } else if errorDescription == "EMAIL_TOKEN_INVALID" {
                                    return .fail(.invalidEmailToken)
                                } else if errorDescription == "EMAIL_ADDRESS_INVALID" {
                                    return .fail(.invalidEmailAddress)
                                } else {
                                    return .fail(.generic)
                                }
                        }
                    }
                    |> mapToSignal { result -> Signal<AuthorizeWithCodeResult, AuthorizationCodeVerificationError> in
                        return account.postbox.transaction { transaction -> Signal<AuthorizeWithCodeResult, NoError> in
                            switch result {
                                case .signUp:
                                    return .single(.signUp(AuthorizationSignUpData(number: number, codeHash: hash, code: code, termsOfService: termsOfService, syncContacts: syncContacts)))
                                case let .password(hint):
                                    transaction.setState(UnauthorizedAccountState(isTestingEnvironment: account.testingEnvironment, masterDatacenterId: account.masterDatacenterId, contents: .passwordEntry(hint: hint, number: number, code: code, suggestReset: false, syncContacts: syncContacts)))
                                    return .single(.loggedIn)
                                case let .authorization(authorization):
                                    switch authorization {
                                    case let .authorization(_, otherwiseReloginDays, _, futureAuthToken, user):
                                        if let futureAuthToken = futureAuthToken {
                                            storeFutureLoginToken(accountManager: accountManager, token: futureAuthToken.makeData())
                                        }
                                        
                                        let user = TelegramUser(user: user)
                                        var isSupportUser = false
                                        if let phone = user.phone, phone.hasPrefix("42") {
                                            isSupportUser = true
                                        }
                                        let state = AuthorizedAccountState(isTestingEnvironment: account.testingEnvironment, masterDatacenterId: account.masterDatacenterId, peerId: user.id, state: nil, invalidatedChannels: [])
                                        initializedAppSettingsAfterLogin(transaction: transaction, appVersion: account.networkArguments.appVersion, syncContacts: syncContacts)
                                        transaction.setState(state)
                                        if let otherwiseReloginDays = otherwiseReloginDays, let value = forcedPasswordSetupNotice(otherwiseReloginDays) {
                                            transaction.setNoticeEntry(key: value.0, value: value.1)
                                        }
                                        return accountManager.transaction { transaction -> AuthorizeWithCodeResult in
                                            switchToAuthorizedAccount(transaction: transaction, account: account, isSupportUser: isSupportUser)
                                            return .loggedIn
                                        }
                                    case let .authorizationSignUpRequired(_, termsOfService):
                                        return .single(.signUp(AuthorizationSignUpData(number: number, codeHash: hash, code: code, termsOfService: termsOfService.flatMap(UnauthorizedAccountTermsOfService.init(apiTermsOfService:)), syncContacts: syncContacts)))
                                    }
                            }
                        }
                        |> switchToLatest
                        |> mapError { _ -> AuthorizationCodeVerificationError in
                        }
                    }
                default:
                    return .fail(.generic)
            }
        } else {
            return .fail(.generic)
        }
    }
    |> mapError { _ -> AuthorizationCodeVerificationError in
    }
    |> switchToLatest
}

public func beginSignUp(account: UnauthorizedAccount, data: AuthorizationSignUpData) -> Signal<Never, NoError> {
    return account.postbox.transaction { transaction -> Void in
        transaction.setState(UnauthorizedAccountState(isTestingEnvironment: account.testingEnvironment, masterDatacenterId: account.masterDatacenterId, contents: .signUp(number: data.number, codeHash: data.codeHash, firstName: "", lastName: "", termsOfService: data.termsOfService, syncContacts: data.syncContacts)))
    }
    |> ignoreValues
}

public enum AuthorizationPasswordVerificationError {
    case limitExceeded
    case invalidPassword
    case generic
}

public func authorizeWithPassword(accountManager: AccountManager<TelegramAccountManagerTypes>, account: UnauthorizedAccount, password: String, syncContacts: Bool) -> Signal<Void, AuthorizationPasswordVerificationError> {
    return verifyPassword(account, password: password)
    |> `catch` { error -> Signal<Api.auth.Authorization, AuthorizationPasswordVerificationError> in
        if error.errorDescription.hasPrefix("FLOOD_WAIT") {
            return .fail(.limitExceeded)
        } else if error.errorDescription == "PASSWORD_HASH_INVALID" {
            return .fail(.invalidPassword)
        } else {
            return .fail(.generic)
        }
    }
    |> mapToSignal { result -> Signal<Void, AuthorizationPasswordVerificationError> in
        return account.postbox.transaction { transaction -> Signal<Void, NoError> in
            switch result {
            case let .authorization(_, _, _, futureAuthToken, user):
                if let futureAuthToken = futureAuthToken {
                    storeFutureLoginToken(accountManager: accountManager, token: futureAuthToken.makeData())
                }
                
                let user = TelegramUser(user: user)
                let state = AuthorizedAccountState(isTestingEnvironment: account.testingEnvironment, masterDatacenterId: account.masterDatacenterId, peerId: user.id, state: nil, invalidatedChannels: [])
                /*transaction.updatePeersInternal([user], update: { current, peer -> Peer? in
                 return peer
                 })*/
                var isSupportUser = false
                if let phone = user.phone, phone.hasPrefix("42") {
                    isSupportUser = true
                }
                initializedAppSettingsAfterLogin(transaction: transaction, appVersion: account.networkArguments.appVersion, syncContacts: syncContacts)
                transaction.setState(state)
                
                return accountManager.transaction { transaction -> Void in
                    switchToAuthorizedAccount(transaction: transaction, account: account, isSupportUser: isSupportUser)
                }
            case .authorizationSignUpRequired:
                return .complete()
            }
        }
        |> switchToLatest
        |> mapError { _ -> AuthorizationPasswordVerificationError in
        }
    }
}

public enum PasswordRecoveryRequestError {
    case limitExceeded
    case generic
}

public enum PasswordRecoveryOption {
    case none
    case email(pattern: String)
}

public enum PasswordRecoveryError {
    case invalidCode
    case limitExceeded
    case expired
    case generic
}

func _internal_checkPasswordRecoveryCode(network: Network, code: String) -> Signal<Never, PasswordRecoveryError> {
    return network.request(Api.functions.auth.checkRecoveryPassword(code: code), automaticFloodWait: false)
    |> mapError { error -> PasswordRecoveryError in
        if error.errorDescription.hasPrefix("FLOOD_WAIT") {
            return .limitExceeded
        } else if error.errorDescription.hasPrefix("PASSWORD_RECOVERY_EXPIRED") {
            return .expired
        } else {
            return .invalidCode
        }
    }
    |> mapToSignal { result -> Signal<Never, PasswordRecoveryError> in
        return .complete()
    }
}

public final class RecoveredAccountData {
    let authorization: Api.auth.Authorization

    init(authorization: Api.auth.Authorization) {
        self.authorization = authorization
    }
}

public func loginWithRecoveredAccountData(accountManager: AccountManager<TelegramAccountManagerTypes>, account: UnauthorizedAccount, recoveredAccountData: RecoveredAccountData, syncContacts: Bool) -> Signal<Never, NoError> {
    return account.postbox.transaction { transaction -> Signal<Void, NoError> in
        switch recoveredAccountData.authorization {
        case let .authorization(_, _, _, futureAuthToken, user):
            if let futureAuthToken = futureAuthToken {
                storeFutureLoginToken(accountManager: accountManager, token: futureAuthToken.makeData())
            }
            
            let user = TelegramUser(user: user)
            var isSupportUser = false
            if let phone = user.phone, phone.hasPrefix("42") {
                isSupportUser = true
            }
            let state = AuthorizedAccountState(isTestingEnvironment: account.testingEnvironment, masterDatacenterId: account.masterDatacenterId, peerId: user.id, state: nil, invalidatedChannels: [])

            initializedAppSettingsAfterLogin(transaction: transaction, appVersion: account.networkArguments.appVersion, syncContacts: syncContacts)
            transaction.setState(state)
            return accountManager.transaction { transaction -> Void in
                switchToAuthorizedAccount(transaction: transaction, account: account, isSupportUser: isSupportUser)
            }
        case .authorizationSignUpRequired:
            return .complete()
        }
    }
    |> switchToLatest
    |> ignoreValues
}

func _internal_performPasswordRecovery(network: Network, code: String, updatedPassword: UpdatedTwoStepVerificationPassword) -> Signal<RecoveredAccountData, PasswordRecoveryError> {
    return _internal_twoStepAuthData(network)
    |> mapError { _ -> PasswordRecoveryError in
        return .generic
    }
    |> mapToSignal { authData -> Signal<RecoveredAccountData, PasswordRecoveryError> in
        let newSettings: Api.account.PasswordInputSettings?
        switch updatedPassword {
        case .none:
            newSettings = nil
        case let .password(password, hint, email):
            var flags: Int32 = 1 << 0
            if email != nil {
                flags |= (1 << 1)
            }

            guard let (updatedPasswordHash, updatedPasswordDerivation) = passwordUpdateKDF(encryptionProvider: network.encryptionProvider, password: password, derivation: authData.nextPasswordDerivation) else {
                return .fail(.invalidCode)
            }

            newSettings = Api.account.PasswordInputSettings.passwordInputSettings(flags: flags, newAlgo: updatedPasswordDerivation.apiAlgo, newPasswordHash: Buffer(data: updatedPasswordHash), hint: hint, email: email, newSecureSettings: nil)
        }

        var flags: Int32 = 0
        if newSettings != nil {
            flags |= 1 << 0
        }
        return network.request(Api.functions.auth.recoverPassword(flags: flags, code: code, newSettings: newSettings), automaticFloodWait: false)
        |> mapError { error -> PasswordRecoveryError in
            if error.errorDescription.hasPrefix("FLOOD_WAIT") {
                return .limitExceeded
            } else if error.errorDescription.hasPrefix("PASSWORD_RECOVERY_EXPIRED") {
                return .expired
            } else {
                return .invalidCode
            }
        }
        |> mapToSignal { result -> Signal<RecoveredAccountData, PasswordRecoveryError> in
            return .single(RecoveredAccountData(authorization: result))
        }
    }
}

func _internal_invalidateLoginCodes(network: Network, codes: [String]) -> Signal<Never, NoError> {
    return network.request(Api.functions.account.invalidateSignInCodes(codes: codes))
    |> ignoreValues
    |> `catch` { _ -> Signal<Never, NoError> in
        return .never()
    }
}

public enum AccountResetError {
    case generic
    case limitExceeded
}

public func performAccountReset(account: UnauthorizedAccount) -> Signal<Void, AccountResetError> {
    return account.network.request(Api.functions.account.deleteAccount(flags: 0, reason: "", password: nil))
    |> map { _ -> Int32? in return nil }
    |> `catch` { error -> Signal<Int32?, AccountResetError> in
        if error.errorDescription.hasPrefix("2FA_CONFIRM_WAIT_") {
            let timeout = String(error.errorDescription[error.errorDescription.index(error.errorDescription.startIndex, offsetBy: "2FA_CONFIRM_WAIT_".count)...])
            if let value = Int32(timeout) {
                return .single(value)
            } else {
                return .fail(.generic)
            }
        } else if error.errorDescription == "2FA_RECENT_CONFIRM" {
            return .fail(.limitExceeded)
        } else {
            return .fail(.generic)
        }
    }
    |> mapToSignal { timeout -> Signal<Void, AccountResetError> in
        return account.postbox.transaction { transaction -> Void in
            guard let state = transaction.getState() as? UnauthorizedAccountState else {
                return
            }
            var number: String?
            var syncContacts: Bool?
            if case let .passwordEntry(_, numberValue, _, _, syncContactsValue) = state.contents {
                number = numberValue
                syncContacts = syncContactsValue
            } else if case let .awaitingAccountReset(_, numberValue, syncContactsValue) = state.contents {
                number = numberValue
                syncContacts = syncContactsValue
            }
            if let number = number, let syncContacts = syncContacts {
                if let timeout = timeout {
                    let timestamp = Int32(CFAbsoluteTimeGetCurrent() + NSTimeIntervalSince1970)
                    transaction.setState(UnauthorizedAccountState(isTestingEnvironment: state.isTestingEnvironment, masterDatacenterId: state.masterDatacenterId, contents: .awaitingAccountReset(protectedUntil: timestamp + timeout, number: number, syncContacts: syncContacts)))
                } else {
                    transaction.setState(UnauthorizedAccountState(isTestingEnvironment: state.isTestingEnvironment, masterDatacenterId: state.masterDatacenterId, contents: .empty))
                }
            }
        }
        |> mapError { _ -> AccountResetError in }
    }
}

public enum SignUpError {
    case generic
    case limitExceeded
    case codeExpired
    case invalidFirstName
    case invalidLastName
}

public func signUpWithName(accountManager: AccountManager<TelegramAccountManagerTypes>, account: UnauthorizedAccount, firstName: String, lastName: String, avatarData: Data?, avatarVideo: Signal<UploadedPeerPhotoData?, NoError>?, videoStartTimestamp: Double?, disableJoinNotifications: Bool = false, forcedPasswordSetupNotice: @escaping (Int32) -> (NoticeEntryKey, CodableEntry)?) -> Signal<Void, SignUpError> {
    return account.postbox.transaction { transaction -> Signal<Void, SignUpError> in
        if let state = transaction.getState() as? UnauthorizedAccountState, case let .signUp(number, codeHash, _, _, _, syncContacts) = state.contents {
            var flags: Int32 = 0
            if disableJoinNotifications {
                flags |= (1 << 0)
            }
            return account.network.request(Api.functions.auth.signUp(flags: flags, phoneNumber: number, phoneCodeHash: codeHash, firstName: firstName, lastName: lastName))
            |> mapError { error -> SignUpError in
                if error.errorDescription.hasPrefix("FLOOD_WAIT") {
                    return .limitExceeded
                } else if error.errorDescription == "PHONE_CODE_EXPIRED" {
                    return .codeExpired
                } else if error.errorDescription == "FIRSTNAME_INVALID" {
                    return .invalidFirstName
                } else if error.errorDescription == "LASTNAME_INVALID" {
                    return .invalidLastName
                } else {
                    return .generic
                }
            }
            |> mapToSignal { result -> Signal<Void, SignUpError> in
                switch result {
                case let .authorization(_, otherwiseReloginDays, _, futureAuthToken, user):
                    if let futureAuthToken = futureAuthToken {
                        storeFutureLoginToken(accountManager: accountManager, token: futureAuthToken.makeData())
                    }
                    
                    let user = TelegramUser(user: user)
                    var isSupportUser = false
                    if let phone = user.phone, phone.hasPrefix("42") {
                        isSupportUser = true
                    }
                    let appliedState = account.postbox.transaction { transaction -> Void in
                        let state = AuthorizedAccountState(isTestingEnvironment: account.testingEnvironment, masterDatacenterId: account.masterDatacenterId, peerId: user.id, state: nil, invalidatedChannels: [])
                        if let hole = account.postbox.seedConfiguration.initializeChatListWithHole.topLevel {
                            transaction.replaceChatListHole(groupId: .root, index: hole.index, hole: nil)
                        }
                        initializedAppSettingsAfterLogin(transaction: transaction, appVersion: account.networkArguments.appVersion, syncContacts: syncContacts)
                        transaction.setState(state)
                        if let otherwiseReloginDays = otherwiseReloginDays, let value = forcedPasswordSetupNotice(otherwiseReloginDays) {
                            transaction.setNoticeEntry(key: value.0, value: value.1)
                        }
                    }
                    |> castError(SignUpError.self)
                    
                    let switchedAccounts = accountManager.transaction { transaction -> Void in
                        switchToAuthorizedAccount(transaction: transaction, account: account, isSupportUser: isSupportUser)
                    }
                    |> castError(SignUpError.self)
                    
                    if let avatarData = avatarData {
                        let resource = LocalFileMediaResource(fileId: Int64.random(in: Int64.min ... Int64.max))
                        account.postbox.mediaBox.storeResourceData(resource.id, data: avatarData)
                        
                        return _internal_updatePeerPhotoInternal(postbox: account.postbox, network: account.network, stateManager: nil, accountPeerId: user.id, peer: .single(user), photo: _internal_uploadedPeerPhoto(postbox: account.postbox, network: account.network, resource: resource), video: avatarVideo, videoStartTimestamp: videoStartTimestamp, mapResourceToAvatarSizes: { _, _ in .single([:]) })
                            |> `catch` { _ -> Signal<UpdatePeerPhotoStatus, SignUpError> in
                                return .complete()
                            }
                            |> mapToSignal { result -> Signal<Void, SignUpError> in
                                switch result {
                                case .complete:
                                    return .complete()
                                case .progress:
                                    return .never()
                                }
                            }
                            |> then(appliedState)
                            |> then(switchedAccounts)
                    } else {
                        return appliedState
                        |> then(switchedAccounts)
                    }
                case .authorizationSignUpRequired:
                    return .fail(.generic)
                }
            }
        } else {
            return .fail(.generic)
        }
    }
    |> mapError { _ -> SignUpError in
    }
    |> switchToLatest
}

public enum AuthorizationStateReset {
    case empty
}

public func resetAuthorizationState(account: UnauthorizedAccount, to value: AuthorizationStateReset) -> Signal<Void, NoError> {
    return account.postbox.transaction { transaction -> Void in
        if let state = transaction.getState() as? UnauthorizedAccountState {
            transaction.setState(UnauthorizedAccountState(isTestingEnvironment: state.isTestingEnvironment, masterDatacenterId: state.masterDatacenterId, contents: .empty))
        }
    }
}

public func togglePreviousCodeEntry(account: UnauthorizedAccount) -> Signal<Never, NoError> {
    return account.postbox.transaction { transaction -> Void in
        if let state = transaction.getState() as? UnauthorizedAccountState {
            if case let .confirmationCodeEntry(number, type, hash, timeout, nextType, syncContacts, previousCodeEntry, usePrevious) = state.contents, let previousCodeEntry {
                transaction.setState(UnauthorizedAccountState(isTestingEnvironment: state.isTestingEnvironment, masterDatacenterId: state.masterDatacenterId, contents: .confirmationCodeEntry(number: number, type: type, hash: hash, timeout: timeout, nextType: nextType, syncContacts: syncContacts, previousCodeEntry: previousCodeEntry, usePrevious: !usePrevious)))
            }
        }
    }
    |> ignoreValues
}

public enum ReportMissingCodeError {
    case generic
}

func _internal_reportMissingCode(network: Network, phoneNumber: String, phoneCodeHash: String, mnc: String) -> Signal<Never, ReportMissingCodeError> {
    return network.request(Api.functions.auth.reportMissingCode(phoneNumber: phoneNumber, phoneCodeHash: phoneCodeHash, mnc: mnc))
    |> mapError { error -> ReportMissingCodeError in
        return .generic
    }
    |> mapToSignal { result -> Signal<Never, ReportMissingCodeError> in
        return .complete()
    }
}