let generateRegistration={};

generateRegistration.fName="[generateRegistration]";

generateRegistration.set=
function(){
   ;
}

generateRegistration.init=
function(cb=null){
   let that=this;
   let action=function(){that.afterScripts(cb);}
   LABKEY.requiresScript(["crfDORA/crfHTML.js"],action);
}

generateRegistration.afterScripts=
function(cb=null){
   if (cb) cb();
}

generateRegistration.print=
function(msg){
   console.log(msg);
}

generateRegistration.selectRows=
function(gObj,cb){
   this.print(this.fName+": selectRows");
   let xRows=new Object();
   let that=this;
   xRows.schemaName=gObj.schemaName;
   xRows.queryName=gObj.queryName;
   xRows.success=cb;
   xRows.failure=function(errorInfo){that.fail(errorInfo);};
   LABKEY.Query.selectRows(xRows);
   this.print(this.fName+": selectRows completed");
}

generateRegistration.insertRows=
function(gObj,rows){
   this.print(this.fName+": insertRows");
   let iRows=new Object();
   iRows.schemaName=gObj.schemaName;
   iRows.queryName=gObj.queryName;
   iRows.rows=rows;
   iRows.success=function(data){gObj.callback(data);};
   LABKEY.Query.insertRows(iRows);
}
 
generateRegistration.zeroPad=
function(val,strLength=3){
   let strK=val.toString();
   return strK.padStart(strLength,'0');
}

generateRegistration.findFirstAvailableKey=
function(rows){
   let k=-1;
   for (let i=0;i<rows.length;i++){
      if (rows[i]['Key']>k){
         k=rows[i]['Key'];
      }
   }
   this.print(this.fName+': Key candidate: '+(k+1));
   return k+1;
}

generateRegistration.generateObjectAtKey=
function(gObj,k){
   let regCode=gObj.codeBase+this.zeroPad(k);
   this.print(this.fName+": regCode "+regCode);
   let row=new Object();
   row['Key']=k;
   row[gObj.codeField]=regCode;
   if ("addData" in gObj){
      for (let q in gObj.addData){
         row[q]=gObj.addData[q];
      }
   }
   return row;
}

generateRegistration.getCode=
function(gObj,row){
   return row[gObj.codeField];
}

generateRegistration.updateField=
function(gObj,text){
   let el=crfHTML.getElement(gObj.elementId);
   this.print(this.fName+": updateField "+gObj.elementId+'/'+el);
   el.value=text;
   if ('updateField' in gObj.qPar){
      let id=gObj.setup.getInputId(gObj.qPar['updateField']);
      crfHTML.getElement(id).value=gObj.qPar['updateValue'];
   }

}

generateRegistration.generateId=
function(gObj,data){
   this.print(this.fName+": generateId "+data.rows.length);
   let k=this.findFirstAvailableKey(data.rows);
   let row=this.generateObjectAtKey(gObj,k);
   this.updateField(gObj,this.getCode(gObj,row));
   let rows=new Array();
   rows.push(row);
   this.insertRows(gObj,rows);
}

generateRegistration.doNothing=
function(data){
   this.print(this.fName+": doNothing() called");
}

generateRegistration.fail=
function(errorInfo){
   this.print(this.fName+": error "+errorInfo.exception);
}

generateRegistration.execute=
function(gObj){
   let that=this;
   //this.print(this.fName+": execute "+gObj.elementId);
   this.inspect(gObj);
   this.selectRows(gObj,function(data){that.generateId(gObj,data);});
}

generateRegistration.inspect=
function(gObj){
   this.print(this.fName);
   this.print("query: "+gObj.schemaName+'/'+gObj.queryName);
   this.print("codeBase "+gObj.codeBase+" codeField "+gObj.codeField);
   this.print("elementId "+gObj.elementId);
   this.print("callback "+gObj.callback);
   this.print("version 1.01");
}

//generic function for all functors
//config is there by default
//
//pars is semicolon delimeted list of parName=value pairs;
//required:
//codeBase - prepend ids with this set of letters
//schemaName - schema of queryName
//queryName - query that keeps assigned ids
//codeField - id field in queryName
//
//outputId is the field that gets updated with the button result
//
//object is initialized from a list in LabKey
//
generateRegistration.getObject=
function(qPar,outputId){
   let gObj=new Object();
   gObj.codeBase=qPar["codeBase"];
   gObj.schemaName=qPar["schemaName"];
   gObj.queryName=qPar["queryName"];
   gObj.codeField=qPar["codeField"];
   gObj.setup=qPar['setup'];
   gObj.qPar=qPar;
   gObj.elementId=outputId;
   //should set codeBase and elementId after initialization
   return gObj;
}