import SwiftSignalKit
import Postbox
import TelegramApi
import MtProtoKit
import SyncCore

public extension TelegramEngineUnauthorized {
    final class Auth {
        private let account: UnauthorizedAccount

        init(account: UnauthorizedAccount) {
            self.account = account
        }

        public func exportAuthTransferToken(accountManager: AccountManager, otherAccountUserIds: [PeerId.Id], syncContacts: Bool) -> Signal<ExportAuthTransferTokenResult, ExportAuthTransferTokenError> {
            return _internal_exportAuthTransferToken(accountManager: accountManager, account: self.account, otherAccountUserIds: otherAccountUserIds, syncContacts: syncContacts)
        }

        public func twoStepAuthData() -> Signal<TwoStepAuthData, MTRpcError> {
            return _internal_twoStepAuthData(self.account.network)
        }

        public func updateTwoStepVerificationPassword(currentPassword: String?, updatedPassword: UpdatedTwoStepVerificationPassword) -> Signal<UpdateTwoStepVerificationPasswordResult, UpdateTwoStepVerificationPasswordError> {
            return _internal_updateTwoStepVerificationPassword(network: self.account.network, currentPassword: currentPassword, updatedPassword: updatedPassword)
        }

        public func performPasswordRecovery(accountManager: AccountManager, code: String, syncContacts: Bool, updatedPassword: UpdatedTwoStepVerificationPassword) -> Signal<Void, PasswordRecoveryError> {
            return _internal_performPasswordRecovery(accountManager: accountManager, account: self.account, code: code, syncContacts: syncContacts, updatedPassword: updatedPassword)
        }

        public func resendTwoStepRecoveryEmail() -> Signal<Never, ResendTwoStepRecoveryEmailError> {
            return _internal_resendTwoStepRecoveryEmail(network: self.account.network)
        }
    }
}

public enum DeleteAccountError {
    case generic
}

public extension TelegramEngine {
    final class Auth {
        private let account: Account

        init(account: Account) {
            self.account = account
        }

        public func twoStepAuthData() -> Signal<TwoStepAuthData, MTRpcError> {
            return _internal_twoStepAuthData(self.account.network)
        }

        public func updateTwoStepVerificationPassword(currentPassword: String?, updatedPassword: UpdatedTwoStepVerificationPassword) -> Signal<UpdateTwoStepVerificationPasswordResult, UpdateTwoStepVerificationPasswordError> {
            return _internal_updateTwoStepVerificationPassword(network: self.account.network, currentPassword: currentPassword, updatedPassword: updatedPassword)
        }

        public func deleteAccount() -> Signal<Never, DeleteAccountError> {
            return self.account.network.request(Api.functions.account.deleteAccount(reason: "GDPR"))
            |> mapError { _ -> DeleteAccountError in
                return .generic
            }
            |> ignoreValues
        }

        public func updateTwoStepVerificationEmail(currentPassword: String, updatedEmail: String) -> Signal<UpdateTwoStepVerificationPasswordResult, UpdateTwoStepVerificationPasswordError> {
            return _internal_updateTwoStepVerificationEmail(network: self.account.network, currentPassword: currentPassword, updatedEmail: updatedEmail)
        }

        public func confirmTwoStepRecoveryEmail(code: String) -> Signal<Never, ConfirmTwoStepRecoveryEmailError> {
            return _internal_confirmTwoStepRecoveryEmail(network: self.account.network, code: code)
        }

        public func resendTwoStepRecoveryEmail() -> Signal<Never, ResendTwoStepRecoveryEmailError> {
        	return _internal_resendTwoStepRecoveryEmail(network: self.account.network)
        }

        public func cancelTwoStepRecoveryEmail() -> Signal<Never, CancelTwoStepRecoveryEmailError> {
        	return _internal_cancelTwoStepRecoveryEmail(network: self.account.network)
        }

        public func twoStepVerificationConfiguration() -> Signal<TwoStepVerificationConfiguration, NoError> {
            return _internal_twoStepVerificationConfiguration(account: self.account)
        }

        public func requestTwoStepVerifiationSettings(password: String) -> Signal<TwoStepVerificationSettings, AuthorizationPasswordVerificationError> {
            return _internal_requestTwoStepVerifiationSettings(network: self.account.network, password: password)
        }

        public func requestTwoStepVerificationPasswordRecoveryCode() -> Signal<String, RequestTwoStepVerificationPasswordRecoveryCodeError> {
            return _internal_requestTwoStepVerificationPasswordRecoveryCode(network: self.account.network)
        }

        public func recoverTwoStepVerificationPassword(code: String) -> Signal<Void, RecoverTwoStepVerificationPasswordError> {
            return _internal_recoverTwoStepVerificationPassword(network: self.account.network, code: code)
        }

        public func cachedTwoStepPasswordToken() -> Signal<TemporaryTwoStepPasswordToken?, NoError> {
            return _internal_cachedTwoStepPasswordToken(postbox: self.account.postbox)
        }

        public func cacheTwoStepPasswordToken(token: TemporaryTwoStepPasswordToken?) -> Signal<Void, NoError> {
            return _internal_cacheTwoStepPasswordToken(postbox: self.account.postbox, token: token)
        }

        public func requestTemporaryTwoStepPasswordToken(password: String, period: Int32, requiresBiometrics: Bool) -> Signal<TemporaryTwoStepPasswordToken, AuthorizationPasswordVerificationError> {
            return _internal_requestTemporaryTwoStepPasswordToken(account: self.account, password: password, period: period, requiresBiometrics: requiresBiometrics)
        }

        public func requestTwoStepPasswordReset() -> Signal<RequestTwoStepPasswordResetResult, NoError> {
            return _internal_requestTwoStepPasswordReset(network: self.account.network)
        }

        public func declineTwoStepPasswordReset() -> Signal<Never, NoError> {
            return _internal_declineTwoStepPasswordReset(network: self.account.network)
        }
    }
}

public extension SomeTelegramEngine {
    final class Auth {
        private let engine: SomeTelegramEngine

        init(engine: SomeTelegramEngine) {
            self.engine = engine
        }

        public func twoStepAuthData() -> Signal<TwoStepAuthData, MTRpcError> {
            switch self.engine {
            case let .authorized(engine):
                return engine.auth.twoStepAuthData()
            case let .unauthorized(engine):
                return engine.auth.twoStepAuthData()
            }
        }

        public func updateTwoStepVerificationPassword(currentPassword: String?, updatedPassword: UpdatedTwoStepVerificationPassword) -> Signal<UpdateTwoStepVerificationPasswordResult, UpdateTwoStepVerificationPasswordError> {
            switch self.engine {
            case let .authorized(engine):
                return engine.auth.updateTwoStepVerificationPassword(currentPassword: currentPassword, updatedPassword: updatedPassword)
            case let .unauthorized(engine):
                return engine.auth.updateTwoStepVerificationPassword(currentPassword: currentPassword, updatedPassword: updatedPassword)
            }
        }

        public func resendTwoStepRecoveryEmail() -> Signal<Never, ResendTwoStepRecoveryEmailError> {
            switch self.engine {
            case let .authorized(engine):
                return engine.auth.resendTwoStepRecoveryEmail()
            case let .unauthorized(engine):
                return engine.auth.resendTwoStepRecoveryEmail()
            }
        }
    }

    var auth: Auth {
        return Auth(engine: self)
    }
}