convert.html

<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>

<h2>Convert heatloss.js export to SAP.js data</h2>

<p>Paste heatloss.js export:</p>
<textarea id="heatlossjs-data" style="width:800px; height:300px">
</textarea>
<br><br>

<button id="convert">Convert</button>

<br><br>
<p>SAP.js data:</p>
<textarea id="sapjs-data" style="width:800px; height:300px">
</textarea>

<script>
var sap = {};
$.getJSON( "openBEM/blank.json?v=1", function( result ) {
    sap = result;
    
    $("#sapjs-data").html(JSON.stringify(sap, null, 2))
    
});

$("#convert").click(function(){ 

    var heatlossjsdata = JSON.parse($("#heatlossjs-data").val());
    
    sap.fabric.library = {}
    
    for (var name in heatlossjsdata.element_type) {

        if (name.toLowerCase().includes("loft")) {
            sap.fabric.library[name] = {
                type: "loft",
                uvalue: heatlossjsdata.element_type[name].uvalue,
                kvalue: 50 
            }
        }
        else if (name.toLowerCase().includes("floor")) {
            sap.fabric.library[name] = {
                type: "floor",
                uvalue: heatlossjsdata.element_type[name].uvalue,
                kvalue: 110 
            }
        }
        else if (name.toLowerCase().includes("wall")) {
            sap.fabric.library[name] = {
                type: "wall",
                uvalue: heatlossjsdata.element_type[name].uvalue,
                kvalue: 150 
            }
        }
        else if (name.toLowerCase().includes("glazing") || name.toLowerCase().includes("window") || name.toLowerCase().includes("door")) {
            sap.fabric.library[name] = {
                type: "window",
                uvalue: heatlossjsdata.element_type[name].uvalue,
                kvalue: 0,
                g: 0.76,
                gL: 0.8,
                ff: 0.7
            }
        }
        else {
            sap.fabric.library[name] = {
                type: "wall",
                uvalue: heatlossjsdata.element_type[name].uvalue,
                kvalue: 150 
            }
        }
    }
    
    var id = 1;

    for (var room in heatlossjsdata.rooms) {
        for (var elementIndex in heatlossjsdata.rooms[room].elements) {
            var element = heatlossjsdata.rooms[room].elements[elementIndex];
        
            if (element.boundary=="external" || element.boundary=="ground" || element.boundary=="unheated") {
                sap.fabric.elements.push({
                    "id": ucfirst(room)+" "+element.orientation+" e"+elementIndex,
                    "lib": element.type,
                    "l": element.width,
                    "h": element.height
                });
            }
            id ++;
        }
    }

    
    $("#sapjs-data").html(JSON.stringify(sap, null, 2))

});

function ucfirst(s)
{
    return s && s[0].toUpperCase() + s.slice(1);
}

</script>