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<!DOCTYPE html>
<meta charset="utf-8">
<html>
<head>
    <script type="text/javascript" src="jquery-1.7.1.min.js"></script>
    <script src="smoothie.js"></script>

    <style type="text/css">
        body { width:100%; height:100%; margin:0; padding:0; overflow: scroll; }
        
        svg, div, canvas { margin:0; padding:0; }
        
        table, td { border: 1px solid black; text-align: center; }
        .clientTable
        {
            display:  table;
            width:auto;
            background-color:#eee;
            border:1px solid  #666666;
            border-spacing:5px;
        }
        .speed 
        { 
            align-content: right;/*fix for  buggy browsers*/
            width:240px;
            background-color:#E0E0E0; 
            background: linear-gradient(90deg, #E0E0E0 100%, #9DA7AE 0%);

        }

        .noBorder
        {
           text-align: left;
           border: none;
        }
        
        .serverTd
        {
            border:none;
            font-weight: bold;
        }

        .serverLTd
        {
            border:none;
            font-weight: bold;
            text-align: left;
        }

        
    </style>
</head>
<body>
    <div id="bigDiv">

    </div>

</body>

<script type="text/javascript">


var lock = false;
var lastTime = 0;
var posibleNrOfRows = 23;

var newAndOld = { 'new':{}, 'old':{} };
var servClSpeeds = {'fresh':0};

var sortedClSpeeds = {'fresh':0, 'nrOfServers':0};

var serverStats = {};
var serverNewAndOld = { 'new':{}, 'old':{} };

// Get new data
setInterval( function() {
    $.get('/data2.json', function(data) {
        if (data.timestamp < lastTime) lastTime = data.timestamp;
        if(data.timestamp === lastTime) return;
        
        var servers = data.servers;
        // take what we need; give nothing back
        var parsedServers = parseServers( servers );

        var parsedServersForStats = parseServersForStats( servers );

        newAndOld['new'] = parsedServers;

        serverNewAndOld['new'] = parsedServersForStats;

        update_servClSpeeds( newAndOld );

        update_serverStats( serverNewAndOld );

        if ( servClSpeeds.fresh !== 0 ) { update_sortedClSpeeds(servClSpeeds); }

        if ( sortedClSpeeds.fresh !== 0 ) {

            dostuff( sortedClSpeeds, serverStats );
        }

        servClSpeeds['fresh'] = 1;
        lastTime = data.timestamp;
        newAndOld['old'] = parsedServers;
        serverNewAndOld['old'] = parsedServersForStats;
}, 'json').always(function() {
    });
}, 2000);


// changes the colors of the tds holding the download speed
// color code and details follow bellow
function makeItPretty( clArray ) {
    for ( var key in clArray ) {
        for ( var client in clArray[key]) {
            var wrappedIp = ipWrapper( client );

            var Bps = clArray[key][client];
            var td = $( "." + wrappedIp + " > " + ".speed");
            td.css("background", changeBackground1( Bps ) );            
        } 
    }
}

function changeBackground1 ( speed ) {
    var result = "";
    switch ( true ) {
        case speed < 1024:
            var proc = ( ( speed * 10 ) / 1024 );
            var proc2 = Math.round( proc );
            result = " linear-gradient(-90deg, #E0E0E0 "+(100-proc2)+"%, #8adb8b "+proc2+"%)";
            break;
        case ( speed >= 1024 && speed  < 10240 ):
            var proc = ( ( speed * 10 ) / 10240 );
            var proc2 = Math.round( proc );
            result = " linear-gradient(-90deg, #E0E0E0 "+(100-proc2-10)+"%, #8adb8b "+(proc2+10)+"%)";
            break;
        case ( speed >= 10240 && speed < 102400 ):
            var proc = ((speed * 10) / 102400 );
            var proc2 = Math.round( proc );
            result = " linear-gradient(-90deg, #E0E0E0 "+(100-proc2-20)+"%, #8adb8b "+(proc2+20)+"%)";
            break;

        case ( speed >= 102400 && speed < 1048576 ):
            var proc = ((speed * 10) / 1048576 );
            var proc2 = Math.round( proc );
            result = " linear-gradient(-90deg, #E0E0E0 "+(100-proc2-30)+"%, #5cdb55 "+(proc2+30)+"%)";
            break;
        case ( speed >= 1048576 && speed < 10485760 ):
            var proc = ((speed * 10) / 10485760 );
            var proc2 = Math.round( proc );
            result = " linear-gradient(-90deg, #E0E0E0 "+(100-proc2-40)+"%, #5cdb55 "+(proc2+40)+"%)";
            break;
        case ( speed >= 10485760 && speed < 104857600 ):
            var proc = ( ( speed * 10 ) / 104857600 );
            var proc2 = Math.round( proc );
            result = " linear-gradient(90deg, #5cdb55 "+(proc2+50)+"%, #E0E0E0 "+(50-proc2)+"%)";
            break;

        case ( speed >= 104857600 && speed < 1073741824 ):
            var proc = ( ( speed * 10 ) / 1073741824 );
            var proc2 = Math.round( proc );
            result = " linear-gradient(90deg, #26a81f "+(proc2+60)+"%, #E0E0E0 "+(40-proc2)+"%)";
            break;
        case ( speed >= 1073741824 && speed <= 10737418240 ):
            var proc = ( ( speed * 10 ) / 10737418240 );
            var proc2 = Math.round( proc );
            result = " linear-gradient(90deg, #26a81f "+(proc2+70)+"%, #E0E0E0 "+(30-proc2)+"%)";
            break;
        case ( speed >= 10737418240 && speed <= 107374182400 ):
            var proc = ( ( speed * 10 ) / 107374182400 );
            var proc2 = Math.round( proc );
            result = " linear-gradient(90deg, #26a81f "+(proc2+80)+"%, #E0E0E0 "+(20-proc2)+"%)";
            break;

        case ( speed >= 107374182400 && speed < 1099511627776 ):
            var proc = ( ( speed * 10 ) / 1099511627776 );
            var proc2 = Math.round( proc );
            result = " linear-gradient(90deg, #056d00 "+(proc2+90)+"%, #E0E0E0 "+(10-proc2)+"%)";
            break;
        case ( speed > 10995116277760 ):
            var proc = ( ( speed * 10 ) / 10995116277760 );
            var proc2 = proc < 10 ? Math.round( proc ) : 10;
            result = " linear-gradient(90deg, #056d00 "+(proc2+90)+"%, #E0E0E0 "+(10-proc2)+"%)";
            break;
        }
    return result;
}

function changeBackground2 ( speed ) {
    var result = "";
    switch ( true ) {
        case speed < 524288:
            var proc = ( ( speed * 25 ) / 524288 );
            var proc2 = Math.round( proc );
            result = " linear-gradient(-90deg, #E0E0E0 "+(100-proc2)+"%, #5fce33 "+proc2+"%)";
            break;
        case ( speed >= 524288 && speed  < 1048576 ):
            var proc = ( ( speed * 25 ) / 1048576 );
            var proc2 = Math.round( proc );
            result = " linear-gradient(-90deg, #5fce33 "+(100-proc2-25)+"%, #1f6b01 "+(proc2+25)+"%)";
            break;
        
        case ( speed >= 1048576 && speed < 536870912 ):
            var proc = ( ( speed * 25 ) / 536870912 );
            var proc2 = Math.round( proc );
            result = " linear-gradient(90deg, #ef396d "+(proc2+50)+"%, #1f6b01 "+(50-proc2)+"%)";
            break;

        case ( speed >= 536870912 && speed < 1073741824 ):
            var proc = ( ( speed * 25 ) / 1073741824 );
            var proc2 = Math.round( proc );
            result = " linear-gradient(90deg, #870014 "+(proc2+75)+"%, #ef396d "+(25-proc2)+"%)";
            break;
        
        case ( speed > 1073741824 ):
            result = " linear-gradient(90deg, #0285ea 100%, #ad001a 0%)";
            break;
        }
    return result;
}
// create as many divs as servers...append them to the bigDiv...if a small div already exists...move to 
// the next one
function createTheDivz ( servArray ) {
    lock = true;
    for( i = 0; i < servArray.length; i++ ) {

        var wrappedIp = ipWrapper( servArray[i] );
        if ( $( "#div-" + wrappedIp ).length > 0 ) {
            $( "#div-" + wrappedIp ).remove();
        }
        var servDiv = $( '<div></div>' );

        servDiv.attr( 'id', "div-" + wrappedIp );
        servDiv.attr( 'style', "float:left" );

        $( "#bigDiv" ).append( servDiv );
    }
}

// simple function creates a table from a given server ip, its clients and a number of rows
function buildTable ( servIp, clArray , nrOfRows, statsObj ) {

    // test to see if the number of rows to be shown exceeds the number of existing clients
    // if yes replace number of shown rows with the length of clients array(represents the nr of clients)
    var localRows = nrOfRows;
    if ( nrOfRows > clArray.length ) { localRows = clArray.length; }


    // if table object already exists delete it
    var wrappedIp = ipWrapper( servIp );
    if ( $( "#tbl-" + wrappedIp ).length > 0 ) {
        $( "#tbl-" + wrappedIp ).remove();
    }
    var servTable = $( "<table></table>" ).addClass( "clientTable" );

    servTable.attr( "id", "tbl-" + wrappedIp );

    var row1 = $( "<tr></tr>" ).addClass( 'row1' );
    var lCol1 = $( "<td></td>" ).addClass("serverLTd").text( "Server Ip: " );
    var rCol1 = $( "<td></td>" ).addClass("serverTd").text( servIp );
    row1.append( lCol1 );
    row1.append( rCol1 );
    servTable.append( row1 );

    for ( var key in statsObj[servIp] ) {
        if ( key === "address" || key === "timestamp") { continue; }
        var server = statsObj[servIp];
        var row = $( "<tr></tr>" );
        var lCol = $( "<td></td>" ).addClass("noBorder").text( key +": " );
        var value  = server[key];

        var rCol = $( "<td></td>" ).addClass("noBorder").text( value );

        row.append( lCol );
        row.append( rCol );
        servTable.append( row );
    }

    for( var key in clArray ) {
        

        for( var client in clArray[key] ) {
            var row = $( "<tr></tr>" ).addClass( ipWrapper( client ) );
            var lCol = $( "<td></td>" ).text( client );
            var rCol = $( "<td></td>" ).addClass( 'speed' ).text( bytesToString( clArray[key][client] ) );
        }
        row.append( lCol );
        row.append( rCol );

        servTable.append( row );
    }

    $( "#div-" + wrappedIp ).append( servTable );    
}

// do stuff stuff stuff stuffy stuff
function dostuff( obj, statsObj ) {
    // the servers in an array sorted after the number of clients...index 0 the server with the most
    // clients...will also receive the leftmost table
    var leServers = sortServers( obj );
    if (lock == false ) { createTheDivz( leServers ) };
    
    for( i = 0; i < leServers.length; i++ ) {

        var wrappedIp = ipWrapper(leServers[i]);
        if(! $( "#div-" + wrappedIp ).length > 0 ) { continue; }
        
        var serverIp = leServers[i];
        var clientsArray = obj[serverIp];

        buildTable( serverIp, clientsArray, posibleNrOfRows, statsObj );

        makeItPretty( clientsArray );
    }
}
// little helper function to wrap the Ip and replace all the . with - and add a c at the start of the ip
// needed for the html table because the rows cannot have an id with . in it
function ipWrapper( givenIp ) {
    var localIp = givenIp.replace(/\./g, "-");
    return "c"+localIp;
}

// function that give us the servers ip which has the most clients
function sortServers( obj ) {

    var keys = [];

    for(var key in obj) {
        if( key == 'fresh' || key == "nrOfServers" ) { continue; }
        keys.push( key );
    }
    var sortedKeys = keys.sort( function( a, b ) { return obj[b].length - obj[a].length; } );

    return sortedKeys;
}


function update_serverStats ( obj ) {    
    
    for( var key in obj['new'] ) {
        var localObject = {};
        if( key in obj['old'] ) {
            var newObject = obj['new'][key];

            var oldObject = obj['old'][key];

            var stime = ( newObject.timestamp <= oldObject.timestamp ) ? 
                        2 : 
                        ( newObject.timestamp - oldObject.timestamp ) / 1000;

            localObject['address'] = newObject.address;
            localObject['timestamp'] = newObject.timestamp < oldObject.timestamp ?
                                        newObject.timestamp :
                                        newObject.timestamp - oldObject.timestamp;
            localObject['uptime'] = Math.floor(newObject.uptime / ( 3600 * 24 ) ) + "d " +
                                    Math.floor(newObject.uptime / 3600 ) % 24 + "h " +
                                    Math.floor(newObject.uptime / 60 ) % 60 + "min";

            var uploadSpeed = newObject.bytesSent < oldObject.bytesSent ?
                                            0 :
                                        Math.round(
                                            (newObject.bytesSent - oldObject.bytesSent)
                                            / stime);
            localObject['uploadSpeed'] = bytesToString(uploadSpeed);

            var downloadSpeed = newObject.bytesReceived < oldObject.bytesReceived ?
                                            0 :
                                        Math.round(
                                            (newObject.bytesReceived - oldObject.bytesReceived)
                                            / stime);
            localObject['downloadSpeed'] = bytesToString(downloadSpeed);

            var localBytesSent = (newObject.bytesSent < oldObject.bytesSent) ? 
                                        oldObject.bytesSent : newObject.bytesSent;
            localObject['Total sent'] = bytesToString( localBytesSent );

            var localBytesReceived = (newObject.bytesReceived < oldObject.bytesReceived) ? 
                                        oldObject.bytesReceived : newObject.bytesReceived;

            localObject['Total received'] = bytesToString( localBytesReceived );

            serverStats[localObject.address] = localObject;
        } 
    }   
}

// update function for the servClSpeeds object
function update_servClSpeeds ( obj ) {
    for( var key in obj['new'] ) {
        if( key in obj['old'] ) {
            var newObject = obj['new'][key];
            var oldObject = obj['old'][key];
            var resultObject = speedCalc( newObject, oldObject );
            servClSpeeds[key] = resultObject;
        }
    }
}

// update function for the sortedClSpeeds
function update_sortedClSpeeds ( obj ) {
    var nrOfServ = 0;
    for ( var key in obj ) {
        if ( key === 'fresh' ) { continue; }
        var clients = obj[key];
        var sortedArray = getSortedKeys( clients );
        sortedClSpeeds[key] = sortedArray;
        nrOfServ++;
    }
    sortedClSpeeds['fresh'] = 1;
    sortedClSpeeds['nrOfServers'] = nrOfServ;
}

// helper function for the sortIps() function
function getSortedKeys( obj ) {
    sortedIps = [];
    var keys = []; 
    for( var key in obj ) keys.push( key );
    var sortedKeys = keys.sort( function( a, b ) { return obj[b] - obj[a]; } );

    for( var i = 0; i < sortedKeys.length; i++) {
        var smallObj = {};
        var Ip = sortedKeys[i];
        var speed = obj[sortedKeys[i]];
        smallObj[Ip] = speed;
        sortedIps.push( smallObj );
    }
    return sortedIps;
}

// function that takes the servers-with-clientspeeds object and returns another object that has 
// serverips as keys and as values an array of sorted ips with the leftmost element beeing the ip with the
// greatest speed and the rightmost one, the one with the smallest speed
// each element of the array is a string consisting of ip:socket#speedInBytesPerSecond
function sortIps ( obj ) {
    var localObject = {};
    for( var servip in obj ) {
        var localObject = obj[servip];
        var localArray = getSortedKeys( localObject );
        localObject[serverip] = localArray;
    }
    return localObject;
}

// function takes new and old parsedServer object and returns a new object where the traffic of each
// client is now replaced by speed in bytes/s
function speedCalc( newO, oldO ){
    var localObject = {};

    // time in seconds calculated from the difference of timestamps or default 2
    var stime = ( newO.timestamp <= oldO.timestamp ) ? 
                    2 : 
                    ( newO.timestamp - oldO.timestamp ) / 1000;
    for( var ip in newO.clients ) {
        if( ip in oldO.clients ) {
            var bitesDelta = newO.clients[ip] - oldO.clients[ip];

            if( bitesDelta < 0 ) { bitesDelta = newO.clients[ip]; }
            // take only the active clients
            if( bitesDelta != 0 ) {
                var speed = Math.round( bitesDelta / stime );
 
                var newClIp = ip.split( ":" )[0];

                if( newClIp in localObject ) { 
                    localObject[newClIp] = localObject[newClIp] + speed;
                } else {
                    localObject[newClIp] = speed;    
                }
            }
        }
    }
    return localObject;
}

function parseServersForStats( servers ) {
    var parsedServers = {};
    var numberOfClients = 0;

    for (var i in servers ) {
        numberOfClients += servers[i].clientCount;
        newServerObject = {};
        var timestamp = servers[i].timestamp;
        newServerObject['timestamp'] = timestamp;

        var serverIp = servers[i].address;
        newServerObject['address'] = serverIp;

        newServerObject['uptime'] = servers[i].uptime;
        newServerObject['bytesSent'] = servers[i].bytesSent;
        newServerObject['bytesReceived'] = servers[i].bytesReceived;

        parsedServers[serverIp] = newServerObject;
    }
    return parsedServers;
}

// takes the whole lot of servers and returnes an object whose keys are the server ip and each ip has
// a timestamp and an adjecent clients object
// clients object is just key:value pairs
function parseServers( servers ) {
    var parsedServers = {};
    // servers is a array containing server objects
    for( var i in servers ) {
        // object has .clients argument and .timestamp argument
        newServerObject = {};
        // save and write timestamp of the server
        var timestamp = servers[i].timestamp;
        newServerObject['timestamp'] = timestamp;
        // iterate over clients array and save ip:bytes pairs in local object
        var clientsObject = {};

        var clients = servers[i].clients;
        for( var ii in clients ) {
            var key = clients[ii].address;
            var value = clients[ii].bytesSent;
            clientsObject[key] = value;
        }
        newServerObject['clients'] = clientsObject;

        var serverIp = servers[i].address;
        // object shoul know its own name; in this case its ip
        newServerObject['address'] = serverIp;

        parsedServers[serverIp] = newServerObject;
    }
    return parsedServers;
}

// Convert bytes to GiB or TiB and return a string in form "10,23 GiB"
function bytesToString( bytes ) {
    var convertedValue;
    var unit;
    if( bytes >= 1099511627776 ) {
        convertedValue = Math.round( ( bytes / 1099511627776) * 100 ) / 100 ;
        unit = " TiB";
    } else if( bytes >= 1073741824 ) {
        convertedValue = Math.round( ( bytes / 1073741824) * 100 ) / 100 ;
        unit = " GiB";
    } else if( bytes >= 1048576 ) {
        convertedValue = Math.round( ( bytes / 1048576) * 100 ) / 100 ;
        unit = " MiB";
    } else if( bytes >= 1024 ) {
        convertedValue = Math.round( ( bytes / 1024) * 100 ) / 100 ;
        unit = " KiB";
    } else {
        convertedValue = Math.round( bytes );
        unit = " B";
    }
    return convertedValue + unit;
}
</script>