/*
 * Map handlers/updaters for NMS.
 *
 * These are functions used to determine how the map should look in NMS.
 * They represent vastly different information, but in a uniform way.
 *
 * The idea is that these updaters only parse information that's fetched by
 * NMS - they do not request additional information. E.g., ping data is
 * always present, but until the ping-handler is active, it isn't
 * displayed. This might seem redundant, but it means any handler can
 * utilize information from any aspect of NMS, and thus opens NMS up to the
 * world of intelligent maps base don multiple data sources.
 *
 * Warning: This paradigm will change. Handlers will be expected to
 * register their own callbacks for nmsData. Work in progress.
 *
 */

/*
 */

var handler_uplinks = {
	init:uplinkInit,
	tag:"uplink",
	name:"Uplink map"
};

var handler_temp = {
	init:tempInit,
	tag:"temp",
	name:"Temperature map"
};

var handler_ping = {
	init:pingInit,
	tag:"ping",
	name:"IPv4 Ping map"
};

var handler_traffic = {
	init:trafficInit,
	tag:"traffic",
	name:"Uplink traffic map"
};

var handler_traffic_tot = {
	init:trafficTotInit,
	tag:"traffictot",
	name:"Switch traffic map"
};

var handler_dhcp = {
	init:dhcpInit,
	tag:"dhcp",
	name:"DHCP map"
};

var handler_disco = {
	init:discoInit,
	tag:"disco",
	name:"Disco fever"
};

var handler_comment = {
	init:commentInit,
	tag:"comment",
	name:"Fresh comment spotter"
};

var handler_snmp = {
	init:snmpInit,
	tag:"snmp",
	name:"SNMP state"
};

var handler_cpu = {
	init:cpuInit,
	tag:"cpu",
	name:"CPU utilization"
};

var handlers = [
	handler_uplinks,
	handler_temp,
	handler_ping,
	handler_traffic,
	handler_disco,
	handler_comment,
	handler_traffic_tot,
	handler_dhcp,
	handler_snmp,
	handler_cpu
	];

/*
 * Update function for uplink map
 */
function uplinkUpdater()
{
	if (!nmsData.switches)
		return;
	if (!nmsData.switches.switches)
		return;
	if (!nmsData.switchstate)
		return;
	if (!nmsData.switchstate.switches)
		return;
	for (var sw in nmsData.switches.switches) {
		var uplinks=0;
		if (nmsData.switchstate.switches[sw] == undefined || nmsData.switchstate.switches[sw].uplinks == undefined) {
			uplinks=0;
		} else {
			uplinks = nmsData.switchstate.switches[sw].uplinks.live;
			nuplinks = nmsData.switchstate.switches[sw].uplinks.total;
		}

		if (uplinks == 0) {
			nmsMap.setSwitchColor(sw,"white");
		} else if (uplinks == 1) {
			nmsMap. setSwitchColor(sw, red);
		} else if (uplinks == 2) {
			nmsMap.setSwitchColor(sw, orange);
		} else if (uplinks == 3) {
			nmsMap.setSwitchColor(sw,green);
		} else if (uplinks > 3) {
			nmsMap.setSwitchColor(sw, blue);
		}
	}
}

/*
 * Init-function for uplink map
 */
function uplinkInit()
{
	nmsData.addHandler("switches","mapHandler",uplinkUpdater);
	nmsData.addHandler("switchstate","mapHandler",uplinkUpdater);
	setLegend(1,"white","0 uplinks");	
	setLegend(2,red,"1 uplink");	
	setLegend(3,orange,"2 uplinks");	
	setLegend(4,green,"3 uplinks");	
	setLegend(5,blue,"4 uplinks");	
}

/*
 * Init-function for uplink map
 */
function trafficInit()
{
	nmsData.addHandler("switches","mapHandler",trafficUpdater);
	nmsData.addHandler("switchstate","mapHandler",trafficUpdater);
	var m = 1024 * 1024 / 8;
	drawGradient([lightgreen,green,orange,red]);
	setLegend(1,colorFromSpeed(0),"0 (N/A)");	
	setLegend(5,colorFromSpeed(1100 * m) , "1100Mb/s");	
	setLegend(4,colorFromSpeed(600 * m),"600Mb/s");	
	setLegend(3,colorFromSpeed(300 * m),"300Mb/s");	
	setLegend(2,colorFromSpeed(10 * m),"10Mb/s");	
}

function trafficUpdater()
{
	if (!nmsData.switchstate.switches || !nmsData.switchstate.then)
		return;
	for (var sw in nmsData.switchstate.switches) {
		var speed = 0;
		try {
			var t = parseInt(nmsData.switchstate.then[sw].uplinks.ifHCOutOctets);
			var n = parseInt(nmsData.switchstate.switches[sw].uplinks.ifHCOutOctets);
			var tt = parseInt(nmsData.switchstate.then[sw].time);
			var nt = parseInt(nmsData.switchstate.switches[sw].time);
		} catch (e) { continue;};
		var tdiff = nt - tt;
		var diff = n - t;
		speed = diff / tdiff;
                if(!isNaN(speed)) {
                        nmsMap.setSwitchColor(sw,colorFromSpeed(speed));
			nmsMap.setSwitchInfo(sw,byteCount(speed*8,0));
		}
	}
}

function trafficTotInit()
{
	nmsData.addHandler("switches","mapHandler",trafficTotUpdater);
	nmsData.addHandler("switchstate","mapHandler",trafficTotUpdater);
	var m = 1024 * 1024 / 8;
	drawGradient([lightgreen,green,orange,red]);
	setLegend(1,colorFromSpeed(0),"0 (N/A)");	
	setLegend(5,colorFromSpeed(5000 * m,5) , "5000Mb/s");	
	setLegend(4,colorFromSpeed(3000 * m,5),"3000Mb/s");	
	setLegend(3,colorFromSpeed(1000 * m,5),"1000Mb/s");	
	setLegend(2,colorFromSpeed(100 * m,5),"100Mb/s");	
}

function trafficTotUpdater()
{
	if (!nmsData.switchstate.switches || !nmsData.switchstate.then)
		return;
	for (var sw in nmsData.switchstate.switches) {
		var speed = 0;
		try {
			var t = parseInt(nmsData.switchstate.then[sw].totals.ifHCOutOctets);
			var n = parseInt(nmsData.switchstate.switches[sw].totals.ifHCOutOctets);
			var tt = parseInt(nmsData.switchstate.then[sw].time);
			var nt = parseInt(nmsData.switchstate.switches[sw].time);
		} catch (e) { continue;};
		var tdiff = nt - tt;
		var diff = n - t;
		speed = diff / tdiff;
                if(!isNaN(speed))
                        nmsMap.setSwitchColor(sw,colorFromSpeed(speed));
	}
}

function colorFromSpeed(speed,factor)
{
	var m = 1024 * 1024 / 8;
	if (factor == undefined)
		factor = 1.1;
	if (speed == 0)
		return blue;
	speed = speed < 0 ? 0 : speed;
	return getColorStop( 1000 * (speed / (factor * (1000 * m))));
}

/*
 * Tweaked this to scale from roughly 20C to 35C. Hence the -20  and /15
 * thing (e.g., "0" is 20 and "15" is 35 by the time we pass it to
 * rgb_from_max());
 */
function temp_color(t)
{
	if (t == undefined) {
		console.log("Temp_color, but temp is undefined");
		return blue;
	}
	t = parseInt(t) - 12;
	t = Math.floor((t / 23) * 1000);
	return getColorStop(t);
}

function tempUpdater()
{
	if(!nmsData.switches)
		return;

	for ( var sw in nmsData.switches["switches"]) {
		var t = "white";
		var temp = "";
		
		if(!nmsData.switchstate || !nmsData.switchstate.switches || !nmsData.switchstate.switches[sw] || !nmsData.switchstate.switches[sw].temp)
			continue;

		var t = nmsData.switchstate.switches[sw].temp;
		temp = t + "°C";
		t = temp_color(temp);
		nmsMap.setSwitchColor(sw, t);
		nmsMap.setSwitchInfo(sw, temp);

	}
}

function tempInit()
{ 
	//Padded the gradient with extra colors for the upper unused values
	drawGradient(["black",blue,lightblue,lightgreen,green,orange,red]);
	setLegend(1,temp_color(15),"15 °C");	
	setLegend(2,temp_color(20),"20 °C");	
	setLegend(3,temp_color(25),"25 °C");	
	setLegend(4,temp_color(30),"30 °C");	
	setLegend(5,temp_color(35),"35 °C");	
	nmsData.addHandler("switchstate","mapHandler",tempUpdater);
}

function pingUpdater()
{
	if (nmsData.switches == undefined || nmsData.switches.switches == undefined) {
		return;
	}
	for (var sw in nmsData.switches.switches) {
		try {
            var c;
			if (nmsData.ping.switches[sw].age > 0) {
				c = red;
			} else {
				c = gradient_from_latency(nmsData.ping.switches[sw].latency);
			}
			nmsMap.setSwitchColor(sw, c);
		} catch (e) {
			nmsMap.setSwitchColor(sw, blue);
		}
	}
}

function pingInit()
{
	drawGradient([green,lightgreen,orange,red]);
	setLegend(1,gradient_from_latency(1),"1ms");	
	setLegend(2,gradient_from_latency(30),"30ms");	
	setLegend(3,gradient_from_latency(60),"60ms");	
	setLegend(4,gradient_from_latency(100),"100ms");	
	setLegend(5,gradient_from_latency(undefined) ,"No response");	
	nmsData.addHandler("ping","mapHandler",pingUpdater);
	nmsData.addHandler("switches","mapHandler",pingUpdater);
	nmsData.addHandler("ticker", "mapHandler", pingUpdater);
}

function commentUpdater()
{
	var realnow = Date.now();
	var now = Math.floor(realnow / 1000);
	if (nmsData.comments == undefined || nmsData.comments.comments == undefined) {
		return
	}
	if(!nmsData.switches) 
		return;
	for (var sw in nmsData.switches.switches) {
		var c = "white";
		if (nmsData.comments.comments[sw] == undefined) {
			nmsMap.setSwitchColor(sw,c);
			continue;
		}
		var s = nmsData.comments.comments[sw];
		var then = 0;
		var active = 0;
		var persist = 0;
		c = "yellow";
		for (var v in s["comments"]) {
			var then_test = parseInt(s["comments"][v]["time"]);
			if (then_test > then && s["comments"][v]["state"] != "inactive")
				then = then_test;
			if (s["comments"][v]["state"] == "active") {
				active++;
			}
			if (s["comments"][v]["state"] == "persist")
				persist++;
		}
		if (then > (now - (60*15))) {
			c = red;
		} else if (active > 0) {
			c = orange;
		} else if (persist > 0) {
			c = blue;
		} else {
			c = green;
		}
		nmsMap.setSwitchColor(sw, c);
	}
}


function commentInit()
{
	nmsData.addHandler("comments","mapHandler",commentUpdater);
	setLegend(1,"white","0 comments");
	setLegend(2,blue,"Persistent");
	setLegend(3,red, "New");
	setLegend(4,orange,"Active");	
	setLegend(5,green ,"Old/inactive only");	
}

function getDhcpColor(stop)
{
	stop = parseInt(stop);
	stop = stop * 0.85;
	if (stop < 0)
		stop = 1000;
	if (stop > 1000)
		stop = 1000;
	return getColorStop(stop);
}

function dhcpUpdater()
{
	var realnow = Date.now();
	var now = Math.floor(realnow / 1000);
	if (nmsData.dhcp == undefined || nmsData.dhcp.dhcp == undefined) {
		return
	}
	if (nmsData.switches == undefined || nmsData.switches.switches == undefined) {
		return;
	}
	try {
	for (var sw in nmsData.switches.switches) {
		var c = "white";
		if (nmsData.dhcp.dhcp[sw] == undefined) {
			nmsMap.setSwitchColor(sw,c);
			continue;
		}
		var s = nmsData.dhcp.dhcp[sw];
		var then = parseInt(s);
		c = getDhcpColor(now - then);
		nmsMap.setSwitchColor(sw, c);
	}
	} catch(e) {
		console.log(e);
	}
}

function dhcpInit()
{
	drawGradient([green,lightgreen,orange,red]);
	nmsData.addHandler("dhcp","mapHandler",dhcpUpdater);
	setLegend(1,"white","Undefined");
	setLegend(2,getDhcpColor(1),"1 Second old");
	setLegend(3,getDhcpColor(300),"300 Seconds old");
	setLegend(4,getDhcpColor(900),"900 Seconds old");
	setLegend(5,getDhcpColor(1200),"1200 Seconds old");
}

/*
 * Testing-function to randomize colors of linknets and switches
 */
function randomizeColors()
{
/*	for (var i in nms.switches_now.linknets) {
		setLinknetColors(i, getRandomColor(), getRandomColor());
	}
*/
	if (nmsData.switches == undefined  || nmsData.switches.switches == undefined) {
		return;
	}
	for (var sw in nmsData.switches.switches) {
		nmsMap.setSwitchColor(sw, getRandomColor());
	}
}

function discoDo() {
	randomizeColors();
	setTimeout(randomizeColors,500);
}
function discoInit()
{
	nmsData.addHandler("ticker", "mapHandler", discoDo);
	
	setNightMode(true);
	setLegend(1,blue,"Y");	
	setLegend(2,red, "M");
	setLegend(3,orange,"C");
	setLegend(4,green, "A");
	setLegend(5,"white","!");
}

function snmpUpdater() {
	for (var sw in nmsData.switches.switches) {
		if (nmsData.snmp.snmp[sw] == undefined || nmsData.snmp.snmp[sw].misc == undefined) {
			nmsMap.setSwitchColor(sw, red);
		} else if (nmsData.snmp.snmp[sw].misc.sysName[0] != sw) {
			nmsMap.setSwitchColor(sw, orange);
		} else {
			nmsMap.setSwitchColor(sw, green);
		}
	}
}
function snmpInit() {
	nmsData.addHandler("snmp", "mapHandler", snmpUpdater);
	
	setLegend(1,green,"OK");	
	setLegend(2,orange, "Sysname mismatch");
	setLegend(3,red,"No SNMP data");
	setLegend(4,green, "");
	setLegend(5,green,"");

}
function cpuUpdater() {
	for (var sw in nmsData.switches.switches) {
		try {
			var cpu = 0;
			for (var u in nmsData.snmp.snmp[sw].misc.jnxOperatingCPU) {
				var local = nmsData.snmp.snmp[sw].misc['jnxOperatingCPU'][u];
				cpu = Math.max(nmsData.snmp.snmp[sw].misc.jnxOperatingCPU[u],cpu);
			}
			nmsMap.setSwitchColor(sw, getColorStop(cpu * 10));
			nmsMap.setSwitchInfo(sw, cpu + " % ");
		} catch (e) {
			nmsMap.setSwitchColor(sw, "white");
			nmsMap.setSwitchInfo(sw, "N/A");
		}
	}
}

function cpuInit() {
	nmsData.addHandler("snmp", "mapHandler", cpuUpdater);
	drawGradient([green,orange,red]);
	setLegend(1,getColorStop(0),"0 %");
	setLegend(2,getColorStop(250),"25 %");
	setLegend(3,getColorStop(600),"60 %");
	setLegend(4,getColorStop(1000),"100 %");
	setLegend(5,"white","N/A");
}