var outgoingSession = null,incomingSession = null,currentSession = null,calState,nativeStream =null,callVideoState = null, callVideoFail = null;
var myVideoView = document.getElementById('myVideo'); //我的本地视频
var yourVideoView = document.getElementById('yourVideo'); //对方视频信息
var getWidthScale = document.documentElement.clientWidth;
var bigVideoStyle = {"background-color":"#000000","width":"100%","height":"100%","top":"0","right":"0","z-index":"1"}
var smallVideoStyle = {"background-color":"#EEEEEE","width":"20%","height":"20%","top":"10px","right":"10px","z-index":"2"}
var localStream = null,userAgent = null,superviseMan =null,videoInputDevices = [],currentVideoIndex = 0,isswitch = 0;
$(function(){
  
  $(".videoYour video").css({
    "width":getWidthScale*2.7+"px",
    "margin-left":-getWidthScale*2.7/2+"px"
  })
  
  $(".videoMy video").css({
    "width":getWidthScale*1.5*0.2+"px",
    "margin-left":-getWidthScale*1.5*0.2/2+"px"
  })
  
  $(this).attr("index","1")
  $(".videoMy").removeAttr("index")
  mediumInfo() //获取摄像头信息
})

//切换摄像头
function shotCut(){
  if (currentVideoIndex == 1) {
    currentVideoIndex = 0;
  } else {
    currentVideoIndex = 1;
  };
  
  try {
    isswitch = 1;
		//muteSession
    var ls = muteSession.connection.getLocalStreams()[0];
    ls.getTracks().forEach(function(track) {
			if(track.kind=='video'){
				track.stop();
			}
    });
    //currentSession.connection.removeStream(ls);
    navigator.getUserMedia({
      audio: false,
      video: {
        deviceId: {
          exact: videoInputDevices[currentVideoIndex].deviceId
        }
      },
    }, function(stream) {
      //currentSession.connection.addStream(stream);
      //const tracks = stream.getTracks();
			const tracks = stream.getVideoTracks()[0];
      // currentSession.connection.getSenders()
      //   .forEach(sender => {
      //     const newTrack = tracks.find(track => track.kind === sender.track.kind)
      //     sender.replaceTrack(newTrack)
      //   })    	
    	var sender=muteSession.connection.getSenders().find(function(s){return s.track.kind==tracks.kind;});
    	sender.replaceTrack(tracks);
    	myVideoView.srcObject = stream;
      
    }, function(e) {
      alert('getUserMedia() error3: ' + JSON.stringify(e));
    });
  
  } catch (e) {
    alert(JSON.stringify(e));
  }
}

function mediumInfo(){
  navigator.mediaDevices.enumerateDevices()
    .then(gotDevices).catch(handleError);
  
  function gotDevices(deviceInfos) {
    //alert(JSON.stringify(deviceInfos));
    deviceInfos.forEach(function(n) {
      if (n.kind === 'videoinput') {
        videoInputDevices.push(n);
      }
    })
  }
  function handleError(error) {
    //alert(JSON.stringify(error));
  }
}

//注册成功事件
function registered(){
  
  $(".registStatus").show()
  if($(".superviseBtn").text()=="我是市民"){
    $(".registStatus").text("登录成功")
    $(".loginbtn").hide();
    $(".videoCall").show();
  } else if($(".superviseBtn").text()=="我是督办专员"){
    $(".registStatus").text("连接成功")
    $("#account").val(extenNum)
  }   
  
}

//电话呼入事件
function newRTCSession(){ 
  
  $(".mui-content").hide();
  $(".callHtml").show();
  $(".answerIcon").show();
  captureLocalMediaVideo();
  localMediaStream()  
}

//确认呼叫后触发
function confirmed(){
  $(".dropIcon").show()
  $(".answerIcon").hide()
}

//peerconnection 媒体传输事件
function peerconnection(){
  $(".videoYour").show();
  $(".customerImg").show();
  $(".rightImg").hide();
}

$(".videoYour").click(function(){
 
	if(!$(this).attr("index")){
		$(this).css(bigVideoStyle)
    
		$(".videoYour video").css({
      "width":getWidthScale*2.7+"px",
      "margin-left":-getWidthScale*2.7/2+"px"
    })
    
		$(".videoMy").css(smallVideoStyle)
    
		$(".videoMy video").css({
		  "width":getWidthScale*1.5*0.2+"px",
      "margin-left":-getWidthScale*1.5*0.2/2+"px"
		})
    
		$(this).attr("index","1")
		$(".videoMy").removeAttr("index")
	}
	
})

$(".videoMy").click(function(){
  
	if(!$(this).attr("index")){
		$(this).css(bigVideoStyle)
    $(".videoMy video").css({
      "width":getWidthScale*1.5+"px",
      "margin-left":-getWidthScale*1.5/2+"px"
    })
    
		$(".videoYour").css(smallVideoStyle)
    $(".videoYour video").css({
      "width":getWidthScale*2.7*0.2+"px",
      "margin-left":-getWidthScale*2.7*0.2/2+"px"
    })
    
		$(this).attr("index","1")
		$(".videoYour").removeAttr("index")
	}
	
})

//视频呼叫
$(".videoCall").click(function(){
  callVideoState = true ;
  callVideoFail = true;
  
  calState = $(this).attr("data-attr");
  
  captureLocalMediaVideo();
  localMediaStream() 
  //videoCall()
})
//静音
$(".muteBtn").click(function(){
  console.log(muteSession.isMuted())
  muteSession.mute(
    {
      'audio': true,   // Local audio is muted
    }
  )
  $(".muteBtn").hide();
  $(".unMuteBtn").show();
})
//取消静音
$(".unMuteBtn").click(function(){
  console.log(muteSession.isMuted())
  muteSession.unmute(
    {
      'audio': true,   // Local audio is muted
    }
  )
  $(".muteBtn").show();
  $(".unMuteBtn").hide();
})
//关闭摄像头
$(".cameraBtn").click(function(){
  console.log(muteSession.isMuted())
  muteSession.mute(
    {
      'video': true,   // Local audio is muted
    }
  )
  $(".cameraBtn").hide();
  $(".unCameraBtn").show();
})
//取消关闭摄像头
$(".unCameraBtn").click(function(){
  console.log(muteSession.isMuted())
  muteSession.unmute(
    {
      'video': true,   // Local audio is muted
    }
  )
  $(".cameraBtn").show();
  $(".unCameraBtn").hide();
})

function videoCall(){
  $(".mui-content").hide();
  $(".callHtml").show();
  console.log(calState)
  //var sip_phone_number_ = $("#callIuput").val().toString();
	var sip_phone_number_ = callNum.toString();
	
  console.log(sip_phone_number_)
  var options = {
    'eventHandlers': eventHandlers,
    'mediaConstraints': { 
      'audio': true, 
      'video': {
        'width': 320,
        'height': 240 
      }       

      },
    'mediaStream': localStream
  };
  callVideoState = false ;
  dbCallVideoState = false;
  outgoingSession = userAgent.call(sip_phone_number_, options);
}
//接听
function answerCall() {
	console.log(incomingSession)
	if (incomingSession) {
		incomingSession.answer({
			'mediaConstraints': {
				'audio': true,
				'video': {
				  'width': 320,
				  'height': 240 
				} 
			},
			'mediaStream': localStream
		});
		incomingSession = null;
	}
}
//挂断
function hangupCall() {
  console.log('挂断----------->');
	if ($(".superviseBtn").text()=="我是督办专员") {
		obj={};
		obj.Type = "VideoDesExten";
		obj.AgentID = RandomTimeData;
		obj.AgentExten = extenNum.toString()
		Send(); /*2018-05-19zhangshaungnan注释*/	
		$(".registStatus").html("已注销")
	} else if($(".superviseBtn").text()=="我是市民"){
		window.location.href="superviseMan.html?extenNum="+$("#account").val()+"&telephone="+$("#telephone").val()
	}
  closeMediaVideo();  //我的媒体信息
  $(".mui-content").show();
  $(".callHtml").hide();
 
  console.log(extenNum)
  // music.pause();
  userAgent.terminateSessions();
  
}
 //注销
function unReg() {
	closeMediaVideo();
	if(!superviseMan){
		console.log('注销----------->');
		userAgent.unregister(true);
		$(".registStatus").html("已注销")
	} else {
		
		window.location.href="superviseMan.html?extenNum="+$("#account").val()+"&telephone="+$("#telephone").val()
		
	}
   
   $(".mui-content").show();
   $(".callHtml").hide();
   $(".dropIcon").hide()
   $(".answerIcon").hide()
}

//开启本地摄像头
function captureLocalMediaVideo() {
  
  navigator.getUserMedia({
    video: {
      deviceId: {
        exact: videoInputDevices[currentVideoIndex].deviceId
      }
    },
    audio: false
  }, function(stream) {
    nativeStream = stream;
    myVideoView.srcObject = stream;
  }, function(e) {
    alert('getUserMedia() error: ' + e.name);
  });
}

//获取本地媒体流
function localMediaStream() {
	navigator.getUserMedia({
	  video: {
	    deviceId: {
	      exact: videoInputDevices[currentVideoIndex].deviceId
	    }
	  },
	  audio: true
	}, function(stream) {
    localStream = stream;
    if(callVideoState){extenBind()}
	  if(dbCallVideoState){videoReqExten()}
	 
	}, function(e) {
	  alert('getUserMedia() error: ' + e.name);
	});
}
// 关闭摄像头
function closeMediaVideo() {
	//console.log("1213")
  
  if(nativeStream){
    nativeStream.getTracks().forEach(function(track) {
      track.stop();
    });
  }
  if(localStream){
    localStream.getTracks().forEach(function(track) {
      track.stop();
    });
  }
  
}


//testStart()
function testStart() {
	
  console.info("get input info: sip_uri = ", sip_uri_, " sip_password = ", sip_password_, " ws_uri = ", ws_uri_);
  var socket = new JsSIP.WebSocketInterface(ws_uri_);
  
  var configuration = {
    sockets: [socket],
    outbound_proxy_set: ws_uri_,
    uri: sip_uri_, //与用户代理关联的SIP URI（字符串）。这是您的提供商提供给您的SIP地址
    password: sip_password_, //SIP身份验证密码
	  contact_uri: 'sip:1007@'+returnCitySN["cip"]+';transport=ws', 
		//stun_servers: "stun1.l.google.com:19302",
    register: true, //指示启动时JsSIP用户代理是否应自动注册
    session_timers: false //启用会话计时器（根据RFC 4028）
  };
  
  userAgent = new JsSIP.UA(configuration);
	//JsSIP.debug.enable('JsSIP:*');
  JsSIP.debug.disable('JsSIP:*');
  //成功注册成功,data:Response JsSIP.IncomingResponse收到的SIP 2XX响应的实例
  userAgent.on('registered', function(data) {
    console.info("registered: ", data.response.status_code, ",", data.response.reason_phrase);
    registered();
  });
  
  //由于注册失败而被解雇,data:Response JsSIP.IncomingResponse接收到的SIP否定响应的实例，如果失败是由这样的响应的接收产生的，否则为空
  userAgent.on('registrationFailed', function(data) {  });

  //1.在注册到期之前发射几秒钟。如果应用程序没有为这个事件设置任何监听器，JsSIP将像往常一样重新注册。
  // 2.如果应用程序订阅了这个事件，它负责ua.register()在registrationExpiring事件中调用（否则注册将过期）。
  // 3.此事件使应用程序有机会在重新注册之前执行异步操作。对于那些在REGISTER请求中的自定义SIP头中使用外部获得的“令牌”的环境很有用。
  userAgent.on('registrationExpiring', function() {
    //==console.warn("registrationExpiring");
  });
  
	//每次传输连接尝试均触发。
	userAgent.on('connecting ',function(data){
		console.log('每次传输连接尝试均触发6666'+data);
	})
  
	//建立传输连接时触发。
	userAgent.on('connected ',function(data){
		console.log('建立传输连接时触发666'+data);
	})
  
	//当传输连接尝试（或自动重新尝试）失败时触发。。
	userAgent.on('disconnected ',function(data){
		console.log('当传输连接尝试（或自动重新尝试）失败时触发。666'+data);
	})
  
  //为传入或传出会话/呼叫激发。data:
  //     originator：'remote',新消息由远程对等方生成；'local',新消息由本地用户生成。
  //      session:JsSIP.RTCSession 实例。
  //      request:JsSIP.IncomingRequest收到的MESSAGE请求的实例；JsSIP.OutgoingRequest传出MESSAGE请求的实例
  userAgent.on('newRTCSession', function(data) {
		muteSession = data.session
		console.log(muteSession)
    console.info('onNewRTCSession: ', data);
    var originator = data.originator;
    var session = data.session;
    var request = data.request;
    if (data.originator == 'remote') { //incoming call
      console.log("电话呼入--1");
      console.info("incomingSession, answer the call");
      incomingSession = data.session;
      newRTCSession();
      //console.info("incomingSession, answer the call");
      //回答传入会话。此方法仅适用于传入会话。
    } else {
      //console.info("outgoingSession");
      outgoingSession = data.session;
      outgoingSession.on('connecting', function(data) {
        //console.info('onConnecting - ', data.request);
        currentSession = outgoingSession;
        outgoingSession = null;
      });
    }
    //接受呼叫时激发
    data.session.on('accepted', function(data) {
    	console.info("onAccepted-----接受呼叫时激发");
    	//console.info('onAccepted - ', data);
    	if (data.originator == 'remote' && currentSession == null) {
    		currentSession = incomingSession;
    		incomingSession = null;
    		//console.info("setCurrentSession - ", currentSession);
    	}
    });
    //确认呼叫后激发
    data.session.on('confirmed', function(data) {
    	console.info("confirmed-----确认呼叫后激发");
    	//console.info('onConfirmed - ', data);
      $(".leftText").html("通话中");     
      console.log(data)
      confirmed();
    	if (data.originator == 'remote' && currentSession == null) {
    		currentSession = incomingSession;
    		incomingSession = null;
        
    		//console.info("setCurrentSession - ", currentSession);
    	}
      
    });
    //在将远程SDP传递到RTC引擎之前以及在发送本地SDP之前激发。此事件提供了修改传入和传出SDP的机制。
    data.session.on('sdp', function(data) {
    	console.info("sdp-----在将远程SDP传递到RTC引擎之前以及在发送本地SDP之前激发");
    });
    //接收或生成对邀请请求的1XX SIP类响应（>100）时激发。该事件在SDP处理之前触发（如果存在），以便在需要时对其进行微调，甚至通过删除数据对象中响应参数的主体来删除它
    data.session.on('progress', function(data) {
    	console.info("progress-----接收或生成对邀请请求的1XX SIP类响应（>100）时激发。该事件在SDP处理之前触发");
    	//console.info('onProgress - ', data);
    	if (data.originator == 'remote') {}
    });
    data.session.on('addstream', function(data) {
    	console.info("addstream-----接收或生成对邀请请求的1XX SIP类响应（>100）时激发。该事件在SDP处理之前触发");
      yourVideoView.srcObject = data.stream;
    });
    
    //创建基础RTCPeerConnection后激发。应用程序有机会通过在peerconnection上添加RTCDataChannel或设置相应的事件侦听器来更改peerconnection。
    data.session.on('peerconnection', function(data) {
    	console.info('onPeerconnection ----创建基础RTCPeerConnection后激发 ');
			// peerConnection.removeStream(peerConnection.getLocalStreams()[0]); 
			// peerConnection.addLocalStream(stream); 
      // pc.getSenders()[1].replaceTrack(videoTracks[0]);
      console.log(data.peerconnection.getSenders())
      data.peerconnection.onaddstream = function(ev) {
        //console.info('onaddstream from remote - ', ev);  onaddtrack  onaddstream
				//music.pause();
        peerconnection()
        callVideoFail = false
        console.log(ev.stream);
        yourVideoView.srcObject = ev.stream;
        
      };
    });
  });
  //为传入或传出消息请求激发。data:
  userAgent.on('newMessage', function(data) {
    if (data.originator == 'local') {
      //console.info('onNewMessage , OutgoingRequest - ', data.request);
    } else {
      //console.info('onNewMessage , IncomingRequest - ', data.request);
    }
  });
  console.info("call register");
  //连接到信令服务器，并恢复以前的状态，如果以前停止。重新开始时，如果UA配置中的参数设置为register:true，则向SIP域注册。	
  userAgent.start();
}

// Register callbacks to desired call events
var eventHandlers = {
  'progress': function(e) {
    console.log('call is in progress');
		//music.play(); 
  },
  'failed': function(e) {
    if(callVideoFail){
      setTimeout(function(){videoCall()},2000)
    }
    console.log('call failed: ', e);
  },
  'ended': function(e) {
    console.log('call ended : ', e);		
		unReg();
  },
  'confirmed': function(e) {
    console.log('call confirmed');
  }
};