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<html>
<body> 
    AppRTC Url:<input id="server" type="text" size="50" /></br>
     Room id:<input id="room" type="text" /></br>
     WebRTC stream:<input id="rtcstream" type="text" size="50" value="rtsp://217.17.220.110/axis-media/media.amp" /></br>
    <input type="button" value="connect" onclick="connect()" />
    <input type="button" value="disconnect" onclick="disconnect()" />
</body>
<script src="libs/request.min.js"></script>
<script src="apprtc.json" ></script>
<script>
    function sendRequest(request,method,headers,data,onSuccess,onFailure,scope) {
 
        console.log("HTTP call "+ method);
        var verb = "GET";
        if (data) {
            verb = "POST";
            data = JSON.stringify(data);
        }
        request(verb , method,
            {    
                body: data,
                headers: headers
            }).done( function (response) { 
                if (response.statusCode === 200) {
                    if (onSuccess) {
                        onSuccess.call(scope,JSON.parse(response.body));
                    }
                }
                else if (onFailure) {
                    onFailure.call(scope,response.statusCode);
                }
            }
        );
    }
 
    // set default value
    document.querySelector('#server').value  = apprtcConfig.url;
    document.querySelector('#room').value = apprtcConfig.roomId;
 
    var clientid = null;
    var peerid = Math.random().toString();
    var messages = null;
    
    function write(text) {
        var textNode = document.createElement("li");
        textNode.textContent = text;
        document.body.appendChild(textNode);
    }
    
    function onError (error) {
        write("onError:" + error)
    }
    
    function onJoin(answer) {
        write("onJoin result:" + answer.result)
        if (answer.params.client_id) {
            write("onJoin client_id:" + answer.params.client_id)
            clientid = answer.params.client_id;
                        
            messages = answer.params.messages; 
            for (var i=0; i < messages.length; i++) {
                var msg = JSON.parse(messages[i]);
                if (msg.type === "offer") {
                    var webrtcStream = document.querySelector('#rtcstream').value;
                    sendRequest(request, "/api/call?peerid="+ peerid+"&url="+encodeURIComponent(webrtcStream), null, msg, onCall, onError, this);         
                }                
            }            
        }
    }
    
    function onGetIceCandidate(dataJson) {
        write("onGetIceCandidate:" + JSON.stringify(dataJson))
        
        var serverName = document.querySelector('#server').value;
        var roomName = document.querySelector('#room').value;        
 
        var candidates = [];
        for (var i=0; i<dataJson.length; i++) {
            // send ICE candidate to Janus
            var msg = { "id": dataJson[i].sdpMid, "label": dataJson[i].sdpMLineIndex, "candidate": dataJson[i].candidate };
            candidates.push(msg);
        }
        
        var url = serverName + "/message/" + roomName + "/" + clientid;
        var body = { messages: candidates };
        sendRequest(request, url, null, body, null , onError, this);     
    }
    
    function onCall(sdp) {
        write("onCall:" + JSON.stringify(sdp))
 
        var serverName = document.querySelector('#server').value;
        var roomName = document.querySelector('#room').value;
 
        var body = { messages: [ sdp ] };
        var url = serverName + "/message/" + roomName + "/" + clientid;
        sendRequest(request, url, null, body, null , onError, this);     
 
 
        if (messages) {
            for (var i=0; i < messages.length; i++) {
                var msg = JSON.parse(messages[i]);
                if (msg.type === "candidate") {
                    var mymsg = { "sdpMid": msg.id, "sdpMLineIndex": msg.label, "candidate": msg.candidate };
                    sendRequest(request, "/api/addIceCandidate?peerid="+ peerid, null, mymsg, null, onError, this);         
                }                
            }
        }
        sendRequest(request, "/api/getIceCandidate?peerid="+ peerid, null, null, onGetIceCandidate, onError, this);         
    }
    
    
    function connect() {            
        var serverName = document.querySelector('#server').value;
        var roomName = document.querySelector('#room').value;
 
        var body = { messages: [""] };
        var url = serverName + "/join/" + roomName;
        sendRequest(request, url, null, body, onJoin , onError, this);     
    }
    
    function disconnect() {
        var serverName = document.querySelector('#server').value;
        var roomName = document.querySelector('#room').value;
        if (clientid) {
            var body = { messages: [] };
            var url = serverName + "/leave/" + roomName + "/" + clientid;
            sendRequest(request, url, null, body, null , onError, this); 
        }
    }
    
    window.onbeforeunload = function() { 
        disconnect();
    };        
</script>
</html>