var d = new Object();
d.sec = 1;
d.min = 60 * d.sec;
d.hour = 60 * d.min;
d.day = 24 * d.hour;
d.week = 7 * d.day;
d.month = 30.5 * d.day;
 
$(document).ready(function(){
    var from = Math.round(new Date().getTime()/1000) - d.day;
    var fromOverview = Math.round(new Date().getTime()/1000) - 15*d.day;
    var to = Math.round(new Date().getTime()/1000);
    var datasetDetail = []
    var datasetOverview = [];
    var plotOverview = null;
    var plotDetail = null;
    var indexFound = null;
    var sensorConfigList = [{"sensorname":"heizkreisregler9.solarDaten.tempKollektor","show":true, "color":"#f30000"},
                      {"sensorname":"heizkreisregler10.betriebsdatenRegler1.kesselTemperatur","show":true, "color":"#283074"},
		      {"sensorname":"heizkreisregler9.solarDaten.tempWarmwasserSolar","show":false, "color":"#f0ff4c"},
		      {"sensorname":"feuerungsautomat1.betriebsdatenRegler1.aussenTemperatur","show":false, "color":"#84b500"},
		      {"sensorname":"de.wettermichel.temperature","show":true, "color":"#24f590"},
		      {"sensorname":"heizkreisregler10.betriebsdatenRegler1.boilerTemperatur","show":true, "color":"#48b4ff"}];

    var pickSensorConfig = function(sensorname) {
        var SensorConfigFound;
	$.each(sensorConfigList, function(i,sensorConfig) {
	    if (sensorConfig.sensorname == sensorname) {
                sensorConfigFound = sensorConfig;
		return false;
	    }
        });
	return sensorConfigFound;
    }
    var replot = function() {
	if (plotDetail == null) {
	    plotDetail = $.plot($("#ebusgraph"), 
				datasetDetail, 
				{ 
				    xaxis: { mode: "time"},
				    yaxis: { min: -16, max: 100 },
				    legend: { show : true}
				});
	} else {
	    plotDetail.setData(datasetDetail);
	    plotDetail.draw();
	    plotDetail.setupGrid(); // redraw legend
	}
    };
    var replotOverview = function() {
	if (plotOverview == null) {
	plotOverview = $.plot($("#overview"),
			      datasetOverview,
			      { // options
				  series: {
				      lines: { show: true, lineWidth: 1 },
				      shadowSize: 0
				  },
				  xaxis: { mode: "time" },
				  yaxis: { ticks: [], min: -26, max: 100, autoscaleMargin: 0.1 },
				  legend: { show: false },
		   		  selection: { mode: "x" }
	       });
	} else {
	    plotOverview.setData(datasetOverview);
	    plotOverview.draw();
	}
	plotOverview.setSelection({xaxis: {'from': from*1000, 'to': to*1000}}, true);
    };
    var plotSensor = function(sensorConfig) {
	plotSensorDetail(sensorConfig);
	plotSensorOverview(sensorConfig);
    };
    var unplotSensor = function(sensorname) {
	unplotSensorDetail(sensorname);
	unplotSensorOverview(sensorname);
    };
    var tzFix = function(d) {
        return d - new Date().getTimezoneOffset() * 60 * 1000;
    }

    var plotSensorDetail = function(sensorConfig) {
	$.getJSON("sensor/"+escape(sensorConfig.sensorname)+"/"+from+"/"+to,
		  function(response) {
		      if (response['data']) {
              response.data = response.data.map(function(d) { return [ tzFix(d[0]), d[1] ]; });
			  datasetDetail.push({'data':response['data'],
					'label':sensorConfig.sensorname,
					'color':sensorConfig.color});
			  replot();
		      } else {
			  alert("Fehler: " + response["error"]);
		      }
		  });
    };

    var unplotSensorDetail = function(sensorname) {
        $.each(datasetDetail, function(i, sensor) {
                if (sensor.label == sensorname) {
                        datasetDetail.splice(i,1);
			replot();
			return false;
                }
        });   
    };
	
    var plotSensorOverview = function(sensorConfig) {
	$.getJSON("sensor_cached/"+escape(sensorConfig.sensorname)+"/"+fromOverview,
		  function(response) {
		      if (response['data']) {
              response.data = response.data.map(function(d) { return [ tzFix(d[0]), d[1] ]; });
			  datasetOverview.push({'data':response['data'],
						'label':sensorConfig.sensorname,
						'color':sensorConfig.color});
			  replotOverview();
		      } else {
			  alert("Overview Fehler: " + response["error"]);
		      }
		  });
	
    };
    var unplotSensorOverview = function(sensorname) {
        $.each(datasetOverview, function(i, sensor) {
                if (sensor.label == sensorname) {
                	datasetOverview.splice(i,1);
			replotOverview();
			return false;
                }
        });
    }

    $("#overview").bind("plotselected", function (event, ranges) {
        range_from = Math.round(ranges.xaxis.from / 1000);
	range_to = Math.round(ranges.xaxis.to / 1000);
	// max selection range 
	if (range_to - range_from > d.month/2) {
	    plotOverview.setSelection({xaxis: {'from': from*1000, 'to': to*1000}}, true);
	    return;
	} else {
	    from = range_from;
	    to = range_to;
	}
	sensors = [];
	for (elem in datasetOverview) {
	    sensor = datasetDetail[elem]["label"];
	    sensors.push(sensor);
	}
	datasetDetail =[];
	for (i in sensors) {
	    plotSensorDetail(pickSensorConfig(sensors[i]));
	}
    });
    
    $.each(sensorConfigList, function(i,sensorConfig) {
    	var pickerDiv = $("<div>").attr("id","pick_"+sensorConfig.sensorname.replace(/\./g,"_"))
				  .addClass("picker")
	                          .appendTo("#sensorpicker");

	var pickerCheckbox = $("<input>").attr("type","checkbox")
				         .appendTo(pickerDiv);
	$(pickerDiv).append(sensorConfig.sensorname);
    	if (sensorConfig.show) {
		//Plot
		plotSensor(sensorConfig);
		$(pickerCheckbox).attr("checked","checked");
	}
    });
    // TODO http://people.iola.dk/olau/flot/examples/annotating.html
    
    
    $('.picker input').click( function() {
    	var sensorname = $(this).parent().attr("id").replace("pick_","").replace(/_/g,".");
    	if ($(this).is(":checked")) {
		plotSensor(pickSensorConfig(sensorname));
	} else {
		unplotSensor(sensorname);
	}
    });
});