var d3_control = function(element, svgurl, mapping) {
    this.mapping = mapping;
    this.element = element;
    var control = this;
    d3.xml(svgurl, "image/svg+xml", function(xml) {
	       element[0][0].appendChild(xml.documentElement);
	       // Setup mapping
	       for (var element_id in this.mapping) {
		   control.initElement(element_id);
	       }
	       d3.json("../all_values", function(response) {
			   control.process(response.data);
			   control.reload(response.time_stop);
		       });
	   });
};

d3_control.prototype = {
    initElement:function(element_id) {
	var options = this.mapping[element_id];
	d3.select(document.getElementById(element_id))
	    .on("click", function() {
		    var elem = d3.select(this);
		    var popup = d3.select("body")
			.append("div")
			.classed("popup", true)
			.style("top", d3.event.clientY-5)
			.style("left", d3.event.clientX-5)
			.on("click", function() {
				d3.select(this).remove();
			    });
		    popup.append("div")
			.text(options.sensor);

		    var startdate = (new Date().getTime()/1000) - 7*60*60*24;
		    var enddate = (new Date().getTime()/1000);
		    var plot = d3.plot(popup);
		    d3.json("../sensor/"+options.sensor+"/" + startdate + "/" + enddate,
			    function(resp) {
				var data = resp.data.map(function(d) {
							     return [new Date(d[0]), d[1]];
							 });
				plot.draw(data);
			    });
		});
    },
    process:function(data) {
        for (var i in data) {
            var row = data[i];

	    if (typeof(console) != "undefined") {
		console.log("[" + d3.format("02d")(row.timestamp) + "] " + 
			    row.name + " Value: " + row.value_real + " - " + 
			    row.value_string);
	    }

            for (var element_id in this.mapping) {
                var options = this.mapping[element_id];
                if (row.name == options.sensor){
                    d3.select(document.getElementById(element_id))
                        .text(""+row.value_real);
                }
            }
        }
    },
    reload:function(time_stop) {
	var url = "../stream";
	if (time_stop != null)
	    url += "/" + time_stop;
	var control = this;
	d3.json(url, function(response) {
		    control.process(response.data);
		    control.reload(response.time_stop);
		});
    }
};

d3.control = function(element, svgurl, mapping) {
    return new d3_control(element,svgurl,mapping);
};