import Foundation
import Postbox
import SwiftSignalKit

import SyncCore

public func updatePeerChatInterfaceState(account: Account, peerId: PeerId, threadId: Int64?, state: SynchronizeableChatInterfaceState) -> Signal<Void, NoError> {
    return account.postbox.transaction { transaction -> Void in
        if let threadId = threadId {
            transaction.updatePeerChatThreadInterfaceState(peerId, threadId: threadId, update: { _ in
                return state
            })
        } else {
            let currentInputState = (transaction.getPeerChatInterfaceState(peerId) as? SynchronizeableChatInterfaceState)?.synchronizeableInputState
            let updatedInputState = state.synchronizeableInputState
            
            if currentInputState != updatedInputState {
                if peerId.namespace == Namespaces.Peer.CloudUser || peerId.namespace == Namespaces.Peer.CloudChannel || peerId.namespace == Namespaces.Peer.CloudGroup {
                    addSynchronizeChatInputStateOperation(transaction: transaction, peerId: peerId)
                }
            }
            transaction.updatePeerChatInterfaceState(peerId, update: { _ in
                return state
            })
        }
    }
}