import Foundation
import XMPPFramework

enum connenctToServerState {
    ///登录状态
    case connenctToServerStateLogin
    ///注册状态
    case connenctToServerStateRegister
}

class XmppManager: NSObject {
    ///管道
    var xmppStream: XMPPStream!
    ///花名册
    var xmppRoster: XMPPRoster!
    ///获取上下文
    var managedObjectContext: NSManagedObjectContext!
    ///获取聊天消息内容
    var messageArchiving: XMPPMessageArchiving!
    ///密码
    var password: String!
    ///连接服务器状态
    var connentToServerState: connenctToServerState!
    ///重连类
    var xmppReconnect: XMPPReconnect!
    ///播放器
    var player: AVAudioPlayer!
    
    static let sharedInstance: XmppManager = {
        let instance = XmppManager()
        return instance
    }()
    
    override init() {
        super.init()
        //初始化通道
        xmppStream = XMPPStream()
        //通信指定ip
        xmppStream.hostName = HostName
        //添加代理
        xmppStream.addDelegate(self, delegateQueue: DispatchQueue.main)
        
        //初始化花名册
        let rosterCoreDataStorage = XMPPRosterCoreDataStorage.sharedInstance()
        xmppRoster = XMPPRoster(rosterStorage: rosterCoreDataStorage!, dispatchQueue: DispatchQueue.global())
        //添加代理
        xmppRoster.addDelegate(self, delegateQueue: DispatchQueue.main)
        //通过管道激活花名册
        xmppRoster.activate(xmppStream)
        
        //初始化聊天对象
        let messageArchivingCoreDataStorage = XMPPMessageArchivingCoreDataStorage.sharedInstance()
        self.messageArchiving = XMPPMessageArchiving(messageArchivingStorage: messageArchivingCoreDataStorage!, dispatchQueue: DispatchQueue.main)
        
        //获取聊天上下文
        self.managedObjectContext = messageArchivingCoreDataStorage?.mainThreadManagedObjectContext
        self.messageArchiving.activate(xmppStream)
        
        //初始化重连类
        self.xmppReconnect = XMPPReconnect()
        self.xmppReconnect.addDelegate(self, delegateQueue: DispatchQueue.main)
    
    }
    
    ///注册
    func registerWithUserName(_ userName: String,password: String) {
        self.password = password
        connentToServerState = .connenctToServerStateRegister
        connentToServerToUserName(userName)
    }
    
    ///登录
    func loginWithUserName(_ userName: String,password: String) {
        self.password = password
        self.connentToServerState = .connenctToServerStateLogin
        connentToServerToUserName(userName)
    }
    
    ///创建账号链接服务器
    func connentToServerToUserName(_ userName: String) {
        let jid = XMPPJID(user: userName, domain: Domain, resource: resource)
        xmppStream.myJID = jid
        connentToServer()
    }
    
    ///链接服务器
    func connentToServer() {
        if xmppStream.isConnected {
            disConnectToServer()
        }
        
        do {
            try XmppManager.sharedInstance.xmppStream.connect(withTimeout: 5)
        } catch let error {
            print(error)
        }
    }
    
    ///断开服务器
    func disConnectToServer() {
        //生成网络状态
        let presence = XMPPPresence(type: "unavailable")
        //改变通道状态
        xmppStream.send(presence)
        //断开连接
        xmppStream.disconnect()
    }
    
    ///播放音频
    func play() {
        let path = Bundle.main.path(forResource: "in", ofType: "caf")
        do {
            let player = try AVAudioPlayer(contentsOf: URL(fileURLWithPath: path!))
            player.play()
        } catch let error {
            print(error)
        }
    }
}

extension XmppManager: XMPPStreamDelegate {
    func xmppStreamDidDisconnect(_ sender: XMPPStream, withError error: Error?) {
        print("已断开连接")
    }
    
    func xmppStream(_ sender: XMPPStream, didNotAuthenticate error: DDXMLElement) {
        print("登录失败")
    }
    
    func xmppStream(_ sender: XMPPStream, didNotRegister error: DDXMLElement) {
        print("注册失败")
    }
    
    func xmppStreamDidAuthenticate(_ sender: XMPPStream) {
        print("登录成功")
        let presence = XMPPPresence(type: "available")
        xmppStream.send(presence)
    }
    
    func xmppStreamDidConnect(_ sender: XMPPStream) {
        print("连接成功")
        switch connentToServerState {
        case .connenctToServerStateLogin:
            do {
                try sender.authenticate(withPassword: self.password)
            } catch let error {
                print(error)
            }
        case .connenctToServerStateRegister:
            do {
            try sender.register(withPassword: password)
            } catch let error {
            print(error)
            }
        default:
            print("default")
        }
    }
    
    func xmppStream(_ sender: XMPPStream, didReceive message: XMPPMessage) {
        let text = message.body
        if text != nil {
            print(text!)
            let path = Bundle.main.path(forResource: "in", ofType: "caf")
            let soundUrl = URL(fileURLWithPath: path!)
            do {
                NotificationCenter.default.post(name: Notification.Name(rawValue: "654321"), object: nil)
                XmppManager.sharedInstance.player = try AVAudioPlayer(contentsOf: soundUrl)
                XmppManager.sharedInstance.player.volume = 1.0
                XmppManager.sharedInstance.player.play()
            } catch let error {
                print(error)
            }
        }else {
            NotificationCenter.default.post(name: Notification.Name(rawValue: "123456"), object: nil)
        }
    }
}

extension XmppManager: XMPPRosterDelegate {
    
    func xmppRosterDidBeginPopulating(_ sender: XMPPRoster, withVersion version: String) {
        print("开始获取好友")
    }
    
    func xmppRosterDidEndPopulating(_ sender: XMPPRoster) {
        print("获取还有结束")
    }
    
    func xmppRoster(_ sender: XMPPRoster, didReceiveRosterItem item: DDXMLElement) {
        print("获取到好友\(item)")
    }
    
    func xmppRoster(_ sender: XMPPRoster, didReceivePresenceSubscriptionRequest presence: XMPPPresence) {
        let alertVC = UIAlertController(title: "\(String(describing: presence.from?.bare))想添加你为好友", message: "", preferredStyle: .alert)
        let acceptAction = UIAlertAction(title: "接受", style: .default) { (action) in
            self.xmppRoster.acceptPresenceSubscriptionRequest(from: presence.from!, andAddToRoster: true)
        }
        alertVC.addAction(acceptAction)
        let cancelAction = UIAlertAction(title: "拒绝", style: .cancel) { (action) in
            self.xmppRoster.rejectPresenceSubscriptionRequest(from: presence.from!)
        }
        alertVC.addAction(cancelAction)
        Login.getCurrentVC().present(alertVC, animated: true, completion: nil)
    }
    
}

extension XmppManager: XMPPReconnectDelegate {
    func xmppReconnect(_ sender: XMPPReconnect, didDetectAccidentalDisconnect connectionFlags: SCNetworkConnectionFlags) {
        print("意外断开连接")
        if Profile.ofUserName != "" && Profile.ofPasswd != "" {
            XmppManager.sharedInstance.loginWithUserName(Profile.ofUserName!, password: Profile.ofPasswd!)
        }
    }
}