function print(config,msg){
	config.document.getElementById(config.debugId).value+="\n"+msg;
}

function drawForm(par){
    
	populateSourceTable(par); //populateSourceTableData
	let tableId="entryTable"; 
	generateTable(par,"formDiv",tableId);
	generateRow(par,tableId,"User");//generateTableRow
	populateSelectTableEntry(par,"User");//populateTableRow , populateSelect

	generateRow(par, tableId,"Site");
	generateRow(par, tableId, "FormStatus");
	generateRow(par, tableId,"Crf");

	populateSelectTableEntry(par,"Site");
	populateSelectTableEntry(par,"FormStatus");

	let formTableId="selectFormTable";
	generateTable(par,"selectFormDiv",formTableId);
	generateRow(par,formTableId,par,"Form");
	

}

function generateQConfig(listName){
    let qConfig=new Object();
    qConfig.containerPath="TECANT/Data";
    qConfig.schemaName="lists";
    qConfig.queryName=listName;
    return qConfig;
 }
 

function sourceVar(crfEntryName,elementId,sourceName){
	let f=new Object();
	f.masterSelectVarName=crfEntryName;
	f.selectId=elementId;
	f.inputType="innerHTML";
	f.sourceSelectVarName=sourceName;
	return f;
}

function getField(config, data, varName){
	let debug=false;
	if (debug) print(config, "getField");
	let fields=data.metaData.fields;
	for (f in fields){
		if (debug) print(config,"Checking "+f+": name "+fields[f].name+"/"+varName);
		if (fields[f].name!=varName) continue;
		return fields[f];
	}
	return null;
}


function generateHead(config, headDivName,divName,title){
	print(config,"generateHead");
	let tb=config.document.createElement('table');
	tb.className='t2';
	let row=tb.insertRow();
	let cell=config.document.createElement('th');
	row.appendChild(cell);	
	cell.setAttribute("colspan","4");
	cell.style.fontSize="20px";
	cell.style.textAlign="center";
	let cellData=config.document.createTextNode(title);
	cell.appendChild(cellData);
	cell=row.insertCell();
	cell.style.fontSize="20px";
	let input=config.document.createElement("input");	
	input.type="button";
	input.value="Show";
	input.id="toggle"+divName+"VisbilityButton";
	input.onclick=function(){toggleVisibility(config,divName,input.id)};
	cell.appendChild(input);
	config.document.getElementById(headDivName).appendChild(tb);
	print(config,"generateHead: Done");
}

function toggleVisibility(config,divName,buttonName){

	let x = config.document.getElementById(divName);
	if (x.style.display === "none") {
    		x.style.display = "block";
		config.document.getElementById(buttonName).value="Hide";

  	} else {
    		x.style.display = "none";
		config.document.getElementById(buttonName).value="Show";

  	}
}

function selectRowsSuccess(config,data){
	print(config,"Select rows on "+data.queryName+" got "+data.rows.length+" rows.");
}

function selectRowsFailure(config,errorObj){
	print(config,"selectRowsFail: "+errorObj.exception)
}

function populateSourceTable(par){
	let debug=true;
	if (debug){
		print(par.config,"populateSourceTable: Starting");
	}
    let config=generateQConfig(par.source.queryName);
    config.schemaName=par.source.schemaName; 
	
	if (!("source" in par)) return;
	if (debug){
		print(par.config,"populateSourceTable ["+par.source.queryName+"]");
	}

	config.success=function(data){populateSourceTableData(data,par)};
	//config.success=function(data){selectRowsSuccess(par.config,data)};
	
	config.failure=function(errorObj){selectRowsFailure(par.config,errorObj)};
	LABKEY.Query.selectRows(config);
}

function populateSourceTableData(data,par){
	let debug=true;
	if (debug){
		print(par.config, "populateSourceTableData: nrow: "+data.rows.length);
	}
	let entry=data.rows[0];
	for (let i=0;i < par.source.vars.length;i++){
		let srcVarName=par.source.vars[i];
		if (debug){
			print(par.config, "populateSourceTable ["+srcVarName+"]");
		}
		let row=par.vars[srcVarName];
		let el=par.config.document.getElementById(row.selectId);
		if (debug){
			print(par.config, "Element: "+el);
		}
		el.innerHTML=entry[row.sourceSelectVarName];
	}
}

function generateTable(par,divName,elementId){
	let debug=true;
	if (debug)
		print(par.config,"generateTable");
	let tb=par.config.document.createElement('table');
	tb.className="t2";
	tb.id=elementId;
	par.config.document.getElementById(divName).appendChild(tb);
	if (debug)
		print(par.config,"generateTable: Done");
}


function generateRow(par, tableId, rowId){
	let debug=true;
	if (debug)
		print(par.config,"generateRow: Start");
	let config=generateQConfig(par.masterQuery);
	config.success=function(data){generateTableRow(data, par, tableId, rowId)};
	LABKEY.Query.selectRows(config);
	if (debug)
		print(par.config,"generateRow: End");
	return;

}

function generateTableRow(data, par, tableId, rowId){
	let debug=true;
	if (debug)
		print(par.config,"generateTableRow: start");
	let tb=par.config.document.getElementById(tableId);
	let row=par.vars[rowId];
	if (debug)
		print(par.config,"getField for "+row.masterSelectVarName);
	
	let field=getField(par.config,data,row.masterSelectVarName);
	let trow=tb.insertRow();
	let cell=par.config.document.createElement('th');
	trow.appendChild(cell);
	let text = par.config.document.createTextNode(field.shortCaption);
	cell.appendChild(text);
	cell=trow.insertCell();
	let input = par.config.document.createElement("select");
	input.id = row.selectId;
	input.onchange=function(){row.callback(par,rowId)};
	cell.appendChild(input); 
	if (debug)
		print(par.config,"generateTableRow: end");
	
}

function populateSelectTableEntry(par,rowId){

	let debug=true;	
	let row=par.vars[rowId];
	if (debug)
		print(par.config,"populateSelectTableEntry:"+par.masterQuery+"/"+row.masterSelectVarName);
		
	

	let config=generateQConfig(par.masterQuery);
    
    if ("filter" in row){
		//populateSelect on authorizationQuery with authSelectVarName
		let filter=row.filter;
		if (debug){
			print(par.config,"Filter:"+filter.queryName);
			print(par.config,"FilterVar "+filter.filterVarName);
		}
		config.queryName=filter.queryName;
		config.filterArray=[];
		for (f in filter.filters){
			if (debug) print(par.config,"Adding filter: "+f+" val "+filter.filters[f]);
			config.filterArray.push(LABKEY.Filter.create(f,filter.filters[f]));
		}
	}
	else{
		config.queryName=par.masterQuery;
	}
	
	config.success=function(data){populateTableRow(data,par,rowId)};
	LABKEY.Query.selectRows(config);
	if (debug)
		print(par.config,"generateSelect: End");
	return;
	
}

function populateTableRow(data,par,rowId){
	//data is output of selectRows on either 
	//	* masterQuery looking at masterSelectVarName or 
	//	* authQuery looking at authSelectVarName

	//in both cases, query[varName] is a lookup variable, so do populateSelect with lookupData,queryData and par
	let debug=true;
	let row=par.vars[rowId];
	let varName=row.masterSelectVarName;
	if ("filter" in row){
		if (row.filter.queryName==data.queryName){
			varName=row.filter.filterVarName;
		}
	}

	if (debug)
		print(par.config,"generateSelectVar: "+data.queryName+"/"+varName+" size "+data.rows.length);

	let field=getField(par.config,data,varName);
	
	if (!field) {
		print(par.config,"Field "+varName+" not found");
		return;
	}
	if (debug)
		print(par.config,"Using field "+field.name);
	

	if (!("lookup" in field)){
		let entry=data.rows[0];
		print(par.config,"Field "+varName+" not a lookup");
		//populateSelectNotLookup(data,par,rowId, entry);	
		return;
	}
	
	let config=generateQConfig(field.lookup.queryName);
	config.schemaName=field.lookup.schemaName;
	config.success=function(lookupData){populateSelect(lookupData,data,par,rowId)};
	//config.success=function(data){selectRowsSuccess(par.config,data)};
	config.failure=function(errorObj){selectRowsFailure(par.config,errorObj)};
	LABKEY.Query.selectRows(config);	
	
	if (debug)
		print(par.config,"generateSelectVar: End");
	
}	

function populateSelect(data,selectedData, par, rowId){
	//data is the set of lookup entries, selectedData is a subset of entries valued at lookup.keyColumn 
	let debug=true;
	if (debug)
		print(par.config,"populateSelect Data: "+data.queryName+" selectedData:"+selectedData.queryName);
	let row=par.vars[rowId];
	let selectId=row.selectId; 
	
	let varName=row.masterSelectVarName;
	if ("filter" in row){
		varName=row.filter.filterVarName;
	}
	let field=getField(par.config,selectedData,varName);

	let displayColumn=field.lookup.displayColumn;
	let keyColumn=field.lookup.keyColumn;

	if (debug){
		print(par.config,"Query: "+data.queryName);
		print(par.config,"ElementId: "+selectId);
		print(par.config,"keyColumn: "+keyColumn);
		print(par.config,"displayColumn: "+displayColumn);
	
	}
	let el = document.getElementById(selectId);
	
	if (debug)
		print(par.config,"Element: "+el);
   	
	for(i = el.options.length; i >= 0; i--) {
		el.remove(i);
   	}
	if ("addSelect" in row){
		let opt = par.config.document.createElement("option");
		opt.text = "<Select>";
		opt.value = -1;
		el.options[0] = opt;
	}

	if ("addNewFlag" in row){
		let opt = par.config.document.createElement("option");
		opt.text = "Add New" 
		opt.value = row.addNewFlag;
		el.options[el.options.length] = opt;
	}

	for (var i = 0; i < data.rows.length; i++) {
		let key=data.rows[i][keyColumn];
		let skip=true;
		if (row.selectAll){
			skip=false;
		}
		else{
			if (debug)
				print(par.config,"Selecting from: "+selectedData.rows.length);
			for (let j=0; j< selectedData.rows.length; j++){
				let entry=selectedData.rows[j];
				if (debug)
					print(par.config,"Comparing: "+entry[varName]+"/"+key);
				if (key!=entry[varName]) continue;
				skip=false;
				break;
			}
		}
		if (skip) continue;
		let opt = par.config.document.createElement("option");
		opt.text = data.rows[i][displayColumn];
		opt.value = data.rows[i][keyColumn];
		if (debug)
			print(par.config,"Adding: "+opt.value+" : "+opt.text);
	
		el.options[el.options.length] = opt;
	

		if ("selectedKey" in row){ 
			if (debug)
				print(par.config,"Comparing: " + opt.value  + "/" + row["selectedKey"]);
		
        		if (opt.value==row["selectedKey"]){
				el.selectedIndex=el.options.length-1;
				if (debug)
					print(par.config,"Equal; "+el.selectedIndex);
			}
		}
	}
	if (debug)
		print(par.config,"Running callback");

	row.callback(par,rowId);
}	

function generateListAndPopulateDaughterSelect(par,rowId){
	let debug=true;

	if (debug){
		print(par.config,"generateListAndPopulateDaughter");
	
	}
	
	generateList(par,rowId);
	let row=par.vars[rowId];
	if ("daughterSelect" in row){
		populateDaughterSelect(par,rowId,row["daughterSelect"],null);
	}
}

function populateDaughterSelect(par,rowId,daughterRowId,entry){//populateSelectNotLookup
	let debug=true;	
	if (debug)
		print(par.config,"populateDaughterSelect: "+rowId+" "+daughterRowId);

	let row=par.vars[rowId];
	if (debug)
		print(par.config,"row["+rowId+"]:"+row);

	let daughterRow=par.vars[daughterRowId];

	if (debug)
		print(par.config,"daughterRow["+daughterRowId+"]:"+daughterRow);

	let el=par.config.document.getElementById(row.selectId);
	if (debug)
		print(par.config,"\n Element:"+el);
	let varValue=el.options[el.selectedIndex].value;

	if (debug)
		print(par.config,"\nAdding filter ["+row.masterSelectVarName+"]:"+varValue);

	let config=generateQConfig(par.masterQuery)
	config.filterArray=[];
	for (let i=0;i < par.filters.length;i++){
		let filterRowId=par.filters[i];
		let filterRow=par.vars[filterRowId];
		let filterValue=par.config.document.getElementById(filterRow.selectId).value;
		config.filterArray.push(LABKEY.Filter.create(filterRow.masterSelectVarName,filterValue));
	}
	config.success=function(data){populateSelectNotLookup(data,par,daughterRowId,entry)}; 
	LABKEY.Query.selectRows(config);

}

function populateSelectNotLookup(data,par,rowId, entry){
	//selectId
	//masterSelectVarName

	let debug=true;

	if (debug)
		print(par.config,"populateSelectNonLookup on "+data.queryName);
	
	let row=par.vars[rowId];
	let varName=row.masterSelectVarName;
	if (debug)	print(par.config,"var "+varName+" rows "+data.rows.length);

	if (debug) print(par.config,"Getting element "+row.selectId);

	let el=par.config.document.getElementById(row.selectId);

	if (!el) {
		print(par.config,"Element not found");
		return;
	}

	if (debug) print(par.config,"Element "+el);
	if (debug) print(par.config,"Clearing entries");

	//remove previous options
	for(i = el.options.length; i >= 0; i--) { 
		el.remove(i);
   	}
	
	if (debug)
		print(par.config,"Adding entries");

	if ("addSelect" in row){
		if (debug)
			print(par.config,"adding <Select>");

		let opt = par.config.document.createElement("option"); 
		opt.text = "<Select>";
		opt.value = -2;
		el.options[0] = opt;
	}

	if ("addNewFlag" in row){
		if (debug) print(par.config,"adding Add new");
		let opt = par.config.document.createElement("option");
		opt.text = "Add New";
		opt.value = row.addNewFlag;
		el.options[el.options.length] = opt;
	}

	for (let i=0;i< data.rows.length;i++){
		let valEntry=data.rows[i];
		if (debug)
			print(par.config,"adding "+valEntry[varName]);
		let opt = par.config.document.createElement("option"); 
		opt.text = valEntry[varName];
		opt.value = valEntry[varName];
		if (entry){
			if (opt.value==entry[varName])
			el.selectedIndex=el.options.length-1;
		}
		el.options[el.options.length] = opt;
	}
	if (entry) 
		row.callback(par,rowId);
}


function generateList(par,rowId){
	let row=par.vars[rowId];
	let debug=true;
	if (debug)
		print(par.config,"generateList: "+par.masterQuery);
	
		//ignore authorization, just select on select variable
	let el=par.config.document.getElementById(row.selectId);
	let varValue=el.options[el.selectedIndex].value;
	if (debug)
		print(par.config,"Using value "+varValue+" from "+row.selectId);
	
	let iValue=parseInt(varValue); 

	let div=par.config.document.getElementById(par.addDiv);
	div.style.display="none";
	//add new crf entry
	if ("addNewFlag" in row){
		if (debug)
			print(par.config,"Comparing " + iValue + "/" + row.addNewFlag);

		if (iValue==row.addNewFlag) {
			addNew(par);
			return;
		}
	}
	


	//do filtering
	let filterArray=[];
	for (let i=0;i < par.filters.length;i++){
		let filterRowId=par.filters[i];
		let filterRow=par.vars[filterRowId];
		let filterValue=par.config.document.getElementById(filterRow.selectId).value;
		filterArray.push(LABKEY.Filter.create(filterRow.masterSelectVarName,filterValue));
	}
	

	//show all for system entries (Select, Add New)
	if (debug)
		print(par.config,"Using iValue "+iValue);
	if (iValue<0) {
		if (debug)
			print(par.config,"Ignoring ["+row.masterSelectVarName+ "]: "+varValue);
	}
	else{
		if (debug)
			print(par.config,"Filtering ["+row.masterSelectVarName+"]: "+varValue);

		if (rowId==="Crf"){
			filterArray.push(LABKEY.Filter.create(row.masterSelectVarName,varValue));
			if (debug)
				print(par.config,"Filtering ["+row.masterSelectVarName+"]: "+varValue);

		}
		
	}

	var config=generateQConfig(par.masterQuery);
	config.renderTo=par.dataDiv;
	config.buttonBarPosition='top';
	config.filters=filterArray;
	config.viewName="sparseView";
	config.success=function(data){updateSuccess(data,par)};
	config.failure=function(json){updateFailure(json,par)};

	LABKEY.QueryWebPart(config);
	
}

function updateSuccess(data,par){
	print(par.config,"Update success");
}

function updateFailure(json,par){
	print(par.config,"Update failed");

}