var SkyScanner = (function(){
    var tzOffset = new Date().getTimezoneOffset() * 60;

    var defaultOptions = {

    };

    var initializers = [];

    class SkyScanner
    {
        
        constructor(options){
            this.options = {}
            Object.assign(this.options, defaultOptions);
            Object.assign(this.options, options);

            var self = this;

            this.lagDetector = null;
            this.currentTimeout = null;

            this.serverTime = "N/A";
            this.serverString = "N/A";

            this.lastIssueUpdate = "N/A";
            this.currentIssues = [];

            this.currentNodes = [];

            this.issues = {
                OK: 0,
                WARN: 0,
                CRITICAL: 0,
            };

            LN().option("wsError",(e)=>self.wsError(e));
            LN().option("wsClose",(e)=>self.wsClose(e));
            LN().option("wsUpdate",(e)=>self.wsUpdate(e));

            LN().connect();

            LN().rpc(null,"GetServerString",[],function(r,e){
                self.serverString = r;
            });

        }

        static getInitializers(){
            return initializers;
        }

        wsUpdate(state)
        {
            try
            {
                if (this.lagDetector)
                    clearTimeout(this.lagDetector);

                this.serverTime = moment(state.currentTime).format();

                this.lagDetector = setTimeout(function(){
                        this.serverTime = "Server lag detected";
                    }, 2000);

            } catch (e)
            {
                console.log(e);
            }
        }
        wsError(e){
            this.serverTime = "WebSocket: Error: " + JSON.stringify(e);
        }
        wsClose(e){
            this.serverTime = "WebSocket: Connection lost";
            setTimeout(function(){
                LN().connect();
            }, 2500 );
        }

        updateIssues(){
            var self = this;
            console.log("Update issue list");

            LN().rpc("CheckService","GetIssueList",[],function(r,e){
                if (e){
                    alert("Error fetching current issue list!\n" + JSON.stringify(e));
                } else {
                    self.currentIssues = r;

                    self.issues = {
                        OK: 0,
                        WARN: 0,
                        CRITICAL: 0,
                    };

                    for (var n=0;n<self.currentIssues.length;n++){
                        var currentNode = self.currentIssues[n];
                        self.upgradeNode(currentNode);
                        self.issues[currentNode.checkState]++;
                    }

                    self.lastIssueUpdate = moment().format();
                }
                self.currentTimeout = setTimeout(function(){ self.updateIssues(); }, 10000);
            });
        }

        upgradeNode(currentNode){
            currentNode.highestStateTime = 0;
            currentNode.checkState = "OK";
    
            $.each(currentNode.CheckStates, function(){
                var now = moment.unix((Date.now()/1000) - tzOffset);
                var m1 = this.History.length > 0 ? moment.unix(this.History.slice(-1)[0].Timestamp) : moment();
                var m2 = this.History.length > 1 ? moment.unix(this.History.slice(-2)[0].Timestamp) : moment();
    
                this.currentStateTime = (now - m1)/1000;
    
                if (STATES.indexOf(currentNode.checkState) < STATES.indexOf(this.CheckState))
                {
                    currentNode.checkState = this.CheckState;
                    currentNode.highestStateTime = 0;
                }
    
                if (currentNode.highestStateTime < this.currentStateTime)
                    currentNode.highestStateTime = this.currentStateTime;

                this.previousCheckState = this.History.length > 1 ? " ( " + this.History.slice(-2)[0].NewState + "=" + timespan((m1 - m2)/1000)  + " )" : "";

                m1 = now;
                $.each(this.History.reverse(), function(){
                    m2 = moment.unix(this.Timestamp);
                    this.duration = (m1 - m2)/1000;
                    m1 = m2;
                });
            });
        }

        updateNodes(){
            var self = this;
            console.log("Update node list");

            LN().rpc("entities","GetNodes",[],function(r,e){
                if (e){
                    alert("Error fetching current node list!\n" + JSON.stringify(e));
                } else {
                    self.currentNodes = r;
                }
            });
        }

        loadNode(nodeID,cb,refreshIntervall){
            var self = this;

            LN().rpc("entities","GetNode",[nodeID,],function(r,e){
                if (refreshIntervall && self.currentTimeout)
                    clearTimeout(self.currentTimeout);

                skyscanner.upgradeNode(r);
                cb(r);

                if (refreshIntervall)
                    setTimeout(()=>{
                        self.loadNode(nodeID,cb,refreshIntervall);
                    }, refreshIntervall);
            });    
        }

        encodeID( t )
        {
            return ("" + t).replace( /[\.\/]/g, "_");
        }

        loadPerformanceGraph(perfPath,interval,cb){
            LN().rpc("perfValues","GetPerfData",[perfPath,interval],(perfData,e)=>{
                if (e){
                    console.log(e);
                } else {
                    cb(perfData);
                }
            });
        }
        


        getCheckStateTime(checkState){
            var history = []
            
            var now = moment.unix((Date.now()/1000) - tzOffset);
            var m1 = checkState.History.length > 0 ? moment.unix(checkState.History.slice(-1)[0].Timestamp) : moment();
            var m2 = checkState.History.length > 1 ? moment.unix(checkState.History.slice(-2)[0].Timestamp) : moment();

            var currentStateTime = (now - m1)/1000;


            timespan(currentStateTime) + (this.History.length > 1 ? " ( " + this.History.slice(-2)[0].NewState + "=" + timespan((m1 - m2)/1000)  + " )" : "")
        }

        static scaleSI(value)
        {
            if (!value)
                return null;
                
            if (value > 1000000000)
                return ((value / 1000000000) | 0) + "G";
            if (value > 1000000)
                return ((value / 1000000) | 0) + "M";
            if (value > 1000)
                return ((value / 1000) | 0) + "k";
            return value;
        }
    }

    return SkyScanner;
})()

var skyScannerRoutes = []