import Combine
import Foundation
import GRDB
import Martin

final class ClientMartinMessagesManager {
    private var cancellable: AnyCancellable?

    init(_ xmppConnection: XMPPClient) {
        cancellable = xmppConnection.module(MessageModule.self).messagesPublisher
            .sink { [weak self] message in
                self?.handleClientMessage(message)
            }
    }

    private func handleClientMessage(_ received: MessageModule.MessageReceived) {
        let message = received.message
        let chat = received.chat
        #if DEBUG
            print("---")
            print("Message received: \(message)")
            print("In chat: \(chat)")
            print("---")
        #endif

        // Check that the message type is supported
        let chatTypes: [StanzaType] = [.chat, .groupchat]
        guard let mType = message.type, chatTypes.contains(mType) else {
            #if DEBUG
                print("Unsupported message type: \(message.type?.rawValue ?? "nil")")
            #endif
            return
        }

        // Type
        let type = MessageType(rawValue: message.type?.rawValue ?? "") ?? .chat

        // Content type
        var contentType: MessageContentType = .text
        if let oob = message.oob {
            contentType = .attachment(.init(
                type: oob.attachmentType,
                localName: nil,
                thumbnailName: nil,
                remotePath: oob
            ))
        } else if message.hints.contains(.noStore) {
            contentType = .typing
            // skip for now
            return
        }

        // From/To
        let from = message.from?.bareJid.stringValue ?? ""
        let to = message.to?.bareJid.stringValue

        // Extract date or set current
        var date = Date()
        if let timestampStr = message.attribute("archived_date"), let timeInterval = TimeInterval(timestampStr) {
            date = Date(timeIntervalSince1970: timeInterval)
        }

        // Msg
        let msg = Message(
            id: message.id ?? UUID().uuidString,
            type: type,
            date: date,
            contentType: contentType,
            status: .sent,
            from: from,
            to: to,
            body: message.body,
            subject: message.subject,
            thread: message.thread,
            oobUrl: message.oob
        )

        // Save message
        Task {
            do {
                try await msg.save()
            } catch {
                logIt(.error, "Error saving message: \(error)")
            }
        }
    }
}