import Foundation
import SwiftSignalKit
import Postbox
import TelegramApi

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

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

        public func acceptTermsOfService(id: String) -> Signal<Void, NoError> {
		    return _internal_acceptTermsOfService(account: self.account, id: id)
		}

        public func requestChangeAccountPhoneNumberVerification(phoneNumber: String) -> Signal<ChangeAccountPhoneNumberData, RequestChangeAccountPhoneNumberVerificationError> {
            return _internal_requestChangeAccountPhoneNumberVerification(account: self.account, phoneNumber: phoneNumber)
        }

        public func requestNextChangeAccountPhoneNumberVerification(phoneNumber: String, phoneCodeHash: String) -> Signal<ChangeAccountPhoneNumberData, RequestChangeAccountPhoneNumberVerificationError> {
            return _internal_requestNextChangeAccountPhoneNumberVerification(account: self.account, phoneNumber: phoneNumber, phoneCodeHash: phoneCodeHash)
        }

        public func requestChangeAccountPhoneNumber(phoneNumber: String, phoneCodeHash: String, phoneCode: String) -> Signal<Void, ChangeAccountPhoneNumberError> {
            return _internal_requestChangeAccountPhoneNumber(account: self.account, phoneNumber: phoneNumber, phoneCodeHash: phoneCodeHash, phoneCode: phoneCode)
        }

        public func updateAccountPeerName(firstName: String, lastName: String) -> Signal<Void, NoError> {
            return _internal_updateAccountPeerName(account: self.account, firstName: firstName, lastName: lastName)
        }

        public func updateAbout(about: String?) -> Signal<Void, UpdateAboutError> {
            return _internal_updateAbout(account: self.account, about: about)
        }

        public func unregisterNotificationToken(token: Data, type: NotificationTokenType, otherAccountUserIds: [PeerId.Id]) -> Signal<Never, NoError> {
            return _internal_unregisterNotificationToken(account: self.account, token: token, type: type, otherAccountUserIds: otherAccountUserIds)
        }

        public func registerNotificationToken(token: Data, type: NotificationTokenType, sandbox: Bool, otherAccountUserIds: [PeerId.Id], excludeMutedChats: Bool) -> Signal<Never, NoError> {
            return _internal_registerNotificationToken(account: self.account, token: token, type: type, sandbox: sandbox, otherAccountUserIds: otherAccountUserIds, excludeMutedChats: excludeMutedChats)
        }

        public func updateAccountPhoto(resource: MediaResource?, videoResource: MediaResource?, videoStartTimestamp: Double?, mapResourceToAvatarSizes: @escaping (MediaResource, [TelegramMediaImageRepresentation]) -> Signal<[Int: Data], NoError>) -> Signal<UpdatePeerPhotoStatus, UploadPeerPhotoError> {
            return _internal_updateAccountPhoto(account: self.account, resource: resource, videoResource: videoResource, videoStartTimestamp: videoStartTimestamp, fallback: false, mapResourceToAvatarSizes: mapResourceToAvatarSizes)
        }

        public func updatePeerPhotoExisting(reference: TelegramMediaImageReference) -> Signal<TelegramMediaImage?, NoError> {
            return _internal_updatePeerPhotoExisting(network: self.account.network, reference: reference)
        }

        public func removeAccountPhoto(reference: TelegramMediaImageReference?) -> Signal<Void, NoError> {
            return _internal_removeAccountPhoto(account: self.account, reference: reference, fallback: false)
        }
        
        public func updateFallbackPhoto(resource: MediaResource?, videoResource: MediaResource?, videoStartTimestamp: Double?, mapResourceToAvatarSizes: @escaping (MediaResource, [TelegramMediaImageRepresentation]) -> Signal<[Int: Data], NoError>) -> Signal<UpdatePeerPhotoStatus, UploadPeerPhotoError> {
            return _internal_updateAccountPhoto(account: self.account, resource: resource, videoResource: videoResource, videoStartTimestamp: videoStartTimestamp, fallback: true, mapResourceToAvatarSizes: mapResourceToAvatarSizes)
        }

        public func removeFallbackPhoto(reference: TelegramMediaImageReference?) -> Signal<Void, NoError> {
            return _internal_removeAccountPhoto(account: self.account, reference: reference, fallback: true)
        }
        
        public func setEmojiStatus(file: TelegramMediaFile?, expirationDate: Int32?) -> Signal<Never, NoError> {
            let peerId = self.account.peerId
            
            let remoteApply = self.account.network.request(Api.functions.account.updateEmojiStatus(emojiStatus: file.flatMap({ file in
                if let expirationDate = expirationDate {
                    return Api.EmojiStatus.emojiStatusUntil(documentId: file.fileId.id, until: expirationDate)
                } else {
                    return Api.EmojiStatus.emojiStatus(documentId: file.fileId.id)
                }
            }) ?? Api.EmojiStatus.emojiStatusEmpty))
            |> `catch` { _ -> Signal<Api.Bool, NoError> in
                return .single(.boolFalse)
            }
            |> ignoreValues
            
            return self.account.postbox.transaction { transaction -> Void in
                if let file = file {
                    transaction.storeMediaIfNotPresent(media: file)
                    
                    if let entry = CodableEntry(RecentMediaItem(file)) {
                        let itemEntry = OrderedItemListEntry(id: RecentMediaItemId(file.fileId).rawValue, contents: entry)
                        transaction.addOrMoveToFirstPositionOrderedItemListItem(collectionId: Namespaces.OrderedItemList.CloudRecentStatusEmoji, item: itemEntry, removeTailIfCountExceeds: 32)
                    }
                }
                
                if let peer = transaction.getPeer(peerId) as? TelegramUser {
                    updatePeers(transaction: transaction, peers: [peer.withUpdatedEmojiStatus(file.flatMap({ PeerEmojiStatus(fileId: $0.fileId.id, expirationDate: expirationDate) }))], update: { _, updated in
                        updated
                    })
                }
            }
            |> ignoreValues
            |> then(remoteApply)
        }
    }
}