import Foundation
#if os(macOS)
    import PostboxMac
    import SwiftSignalKitMac
#else
    import Postbox
    import SwiftSignalKit
#endif

public func removePeerChat(postbox: Postbox, peerId: PeerId, reportChatSpam: Bool) -> Signal<Void, NoError> {
    return postbox.transaction { transaction -> Void in
        if peerId.namespace == Namespaces.Peer.SecretChat {
            if let state = transaction.getPeerChatState(peerId) as? SecretChatState {
                
                let updatedState = addSecretChatOutgoingOperation(transaction: transaction, peerId: peerId, operation: SecretChatOutgoingOperationContents.terminate(reportSpam: reportChatSpam), state: state).withUpdatedEmbeddedState(.terminated)
                if updatedState != state {
                    transaction.setPeerChatState(peerId, state: updatedState)
                    if let peer = transaction.getPeer(peerId) as? TelegramSecretChat {
                        updatePeers(transaction: transaction, peers: [peer.withUpdatedEmbeddedState(updatedState.embeddedState.peerState)], update: { _, updated in
                            return updated
                        })
                    }
                }
            }
            clearHistory(transaction: transaction, mediaBox: postbox.mediaBox, peerId: peerId)
            transaction.updatePeerChatListInclusion(peerId, inclusion: .never)
            transaction.removeOrderedItemListItem(collectionId: Namespaces.OrderedItemList.RecentlySearchedPeerIds, itemId: RecentPeerItemId(peerId).rawValue)
        } else {
            cloudChatAddRemoveChatOperation(transaction: transaction, peerId: peerId, reportChatSpam: reportChatSpam)
            if peerId.namespace == Namespaces.Peer.CloudUser  {
                transaction.updatePeerChatListInclusion(peerId, inclusion: .ifHasMessages)
                clearHistory(transaction: transaction, mediaBox: postbox.mediaBox, peerId: peerId)
            } else if peerId.namespace == Namespaces.Peer.CloudGroup {
                transaction.updatePeerChatListInclusion(peerId, inclusion: .never)
                clearHistory(transaction: transaction, mediaBox: postbox.mediaBox, peerId: peerId)
            } else {
                transaction.updatePeerChatListInclusion(peerId, inclusion: .never)
            }
        }
        transaction.removeOrderedItemListItem(collectionId: Namespaces.OrderedItemList.RecentlySearchedPeerIds, itemId: RecentPeerItemId(peerId).rawValue)
    }
}