//
// Form check script
// Copyright 2006 TheDeal LLC
// V 1.0
//
// FormElement object (Name, Description, Type, Required, Extra, Min, Max)
//          |     TYPE     |     EXTRA     |     MIN     |     MAX     |
//          |----------------------------------------------------------|
//          |  integer     |               |  min value  |  max value  |
//          |  float       | # decimal pl  |  min value  |  max value  |
//          |  date        | format m/d/y  |  min date   |  max date   |
//          |  namecheck   | prefix        |  New only   |             |
//          |  multiname   | new/null      |             |             |
//          |----------------------------------------------------------|
//

var formElementList = new Array();

function verifyAndSubmit (n) {
	if ( verifyForm(n) )
		document.forms[n].submit();
}

function verifyForm(n) {
	var formObj = document.forms[n];
	var formOK = true;
	var reqMessage = "";
	var numMessage = "";
	var datMessage = "";
	var chkMessage = "";
	var invMessage = "";

	if ( formObj ) {
		for (var i = 0; i < formElementList.length; i++){
			var fieldElement = formElementList[i];
			var o = formObj.elements[fieldElement.name];
			if (o){
				if ( fieldElement.bg == null )
					fieldElement.bg = o.style.background;
				
				var elementOK = true;
				var fieldVal = getFieldValue(o);
				
				if ( fieldElement.type == "multiname" && fieldElement.req ) {
					if ( fieldElement.extra != null ) {
						if ( fieldVal == "nochange" || fieldVal == "empty" )
							fieldVal = null;	
					} else {
						if ( fieldVal == "empty" ) 
							fieldVal = null;
					}
				}
				if ( fieldElement.req && fieldVal == null ) {
					reqMessage += "   --  " + fieldElement.desc + "\n";
					formOK = false;
					elementOK = false;
				}
				if ( fieldVal != null ) {
					switch(fieldElement.type){
						case "integer":
							if ( !isInteger(fieldVal) ) {
								numMessage += "   --  " + fieldElement.desc + "\n";
								formOK = false;
								elementOK = false;
							} else {
								if ( !isInRange(fieldVal, fieldElement.min, fieldElement.max) ) {
									numMessage += "   --  " + fieldElement.desc + " - Not in range [" + fieldElement.min + " : " + fieldElement.max + "]\n";
									formOK = false;
									elementOK = false;
								}
							}
							break;
						case "float":
							if ( !isFloat(fieldVal, fieldElement.extra) ) {
								numMessage += "   --  " + fieldElement.desc + " - max " + fieldElement.extra + " decimal places\n";
								formOK = false;
								elementOK = false;
							} else {
								if ( !isInRange(fieldVal, fieldElement.min, fieldElement.max) ) {
									numMessage += "   --  " + fieldElement.desc + " - Not in range [" + fieldElement.min + " : " + fieldElement.max + "]\n";
									formOK = false;
									elementOK = false;
								}
							}
							break;
						case "date":
							if ( !isDate(fieldVal, fieldElement.extra) ) {
								datMessage += "   --  " + fieldElement.desc + " [" + fieldElement.extra + "]\n";
								formOK = false;
								elementOK = false;
							} else {
								if ( !isDateInRange (fieldVal, fieldElement.min, fieldElement.max) ) {
									var a = confirm(fieldElement.desc + " - Not in range [" + fieldElement.min + " : " + fieldElement.max + "]\n  Are you sure?\n");
									if ( !a ) {
										datMessage += "  -- " + fieldElement.desc + " - Not in range [" + fieldElement.min + " : " + fieldElement.max + "]\n";
										formOK = false;
										elementOK = false;
									}
								}
							}
							break;
						case "namecheck":
							if ( !idDBCheck(fieldElement.extra, fieldElement.min) ) {
								chkMessage += "   --  " + fieldElement.desc + "\n";
								formOK = false;
								elementOK = false;
							}
							break;
						default:
					} // end Switch loop
				} // End if fieldVal != null
				
				if ( elementOK ) {
					o.style.background = fieldElement.bg;
				} else {
					o.style.background = "#FFCCCC";
				}
					
			} // end if o
		} // end for loop
		
		
		if ( !formOK ) {
			var alertMessage = "Please correct the following before submiting!\n\n";
			if ( reqMessage.length > 3 )
				alertMessage += " Required fields:\n" + reqMessage + "\n";
			if ( invMessage.length > 3 ) 
				alertMessage += " Invalid input:\n" + invMessage + "\n";
			if ( numMessage.length > 3 )
				alertMessage += " Invalid number format:\n" + numMessage + "\n";
			if ( datMessage.length > 3 )
				alertMessage += " Invalid date format:\n" + datMessage + "\n";
			if ( chkMessage.length > 3 )
				alertMessage += " Name not check in Database:\n" + chkMessage + "\n";
				
			alert(alertMessage);
		}
		return formOK;
	}
}

//
// Get field value
//
function getFieldValue (o) {
	var fieldValue = null;
	switch(o.type){
		case "select-one":
			if (o.selectedIndex != -1 && o.options[o.selectedIndex].text != ""){
				fieldValue = o.options[o.selectedIndex].text;
			}
			break;
		case "select-multiple":
			if (o.selectedIndex != -1){
				fieldValue = "selected";
			} 
			break;
		case "text":
			if ( trimText(o.value) != "" ) {
				fieldValue = o.value;
			}
			break;
		case "textarea":
			if (trimText(o.value) != "" && o.value == null){
				fieldValue = o.value;
			}
			break;
		case "password":
			if ( trimText(o.value) != "" ) {
				fieldValue = o.value;
			}
			break;
		case "hidden":
			if ( trimText(o.value) != "" ) {
				fieldValue = o.value;
			}
			break;
		default:
	} // end switch
	
	if (o.type == undefined){
		var bnch = false;
		for (var j = 0; j < o.length; j++){
			if (o[j].checked){
				bnch = true;
			}
		}
		if (bnch){
			fieldValue = "checked";
		}
	} // end if undefined
	return fieldValue;
}

//
//
//
function isInRange (v, min, max) {
	var isinrange = true;

	if ( min != null && v < min )
		isinrange = false;
	if ( max != null && v > max )
		isinrange = false;
	return isinrange;
}
//
//
//
function isDateInRange (v, min, max) {
	var isinrange = true;

	var d = Date.parse(v);

	if ( min != null ) {
		var dm = Date.parse(min);
		if ( d < dm ) 
			isinrange = false;
	}
	if ( max != null ) {
		var dm = Date.parse(max);
		if ( d > dm ) 
			isinrange = false;
	}
	
	return isinrange;
}
//
// Database check
//
function idDBCheck (id, newonly) {
	var dbCheck = false;
	var o = document.getElementById(id+ "_id");
	if (o && o.value != 0 ){
		dbCheck = true;
		if ( newonly && o.value > 0 ) {
			dbCheck = false;
			alert("Add new company only! Can not select from database!");
		}
	}
	
	return dbCheck;
}
//
// Check if value is Date
//
function isDate (d, f) {
	var isdate = true;
	var pdel = "/";
	var pmm = -1;
	var plm = 0;
	var pdd = -1;
	var pld = 0;
	var pyy = -1;
	var ply = 0;
	var plena = 0;
	var plenb = 0;
	var pitem = 0;
	var pminyear = 0;
	var pmaxyear = 0;
	
	var cy = 0;
	var cm = 0;
	var cd = 0;
	
	if ( f == "mm/dd/yyyy" ) {
		plena = 10;
		plenb = 10;
		pdel = "/";
		pmm = 0;
		plm = 2;
		pdd = 1;
		pld = 2;
		pyy = 2;
		ply = 4;
		pitem = 3;
		pminyear = 1900;
		pmaxyear = 3000;
	} else if ( f == "mm-dd-yyyy" ) {
		plena = 10;
		plenb = 10;
		pdel = "-";
		pmm = 0;
		plm = 2;
		pdd = 1;
		pld = 2;
		pyy = 2;
		ply = 4;
		pitem = 3;
		pminyear = 1900;
		pmaxyear = 3000;
	} else if ( f == "mm/dd/yy" ) {
		plena = 8;
		plenb = 8;
		pdel = "/";
		pmm = 0;
		plm = 2;
		pdd = 1;
		pld = 2;
		pyy = 2;
		ply = 2;
		pitem = 3;
		pminyear = 0;
		pmaxyear = 99;
	}
	
	if ( d != null ) {
		if ( d.length < plena || d.length > plenb )
			isdate = false;
		else {	
			var ditems = d.split(pdel);
			if ( ditems.length != pitem )
				isdate = false;
			else {
				var tyy = ditems[pyy];
				var tmm = ditems[pmm];
				var tdd = ditems[pdd];
				if ( isInteger(tyy) && ply == tyy.length ) {
					if ( tyy < pminyear || tyy > pmaxyear )
						isdate = false;
				} else {
					isdate = false;
				}
				if ( isdate && isInteger(tmm) && plm == tmm.length ) {
					if ( tmm < 1 || tmm > 12 )
						isdate = false;
				} else {
					isdate = false;
				}
			
				if ( isdate && isInteger(tdd) && pld == tdd.length ) {
					var lastDay = getLastOfMonth(tmm, tyy);	
					if ( tdd < 1 || tdd > lastDay )
						isdate = false;
				} else {
					isdate = false;
				}
			}
		}
	}
	return isdate;
}
//
// Get last day of month
//
function getLastOfMonth (m, y) {
		 var lastDayOfMonth = [31,28,31,30,31,30,31,31,30,31,30,31];
		 if ( y % 4 == 0 ) {
		 	lastDayOfMonth[1] = 29;
		 }
		 return lastDayOfMonth[m-1];
}
//
// Check if value is Float
//
function isFloat (n, d) {
	var Numbers = "0123456789.";
	var isnum=true;
	var charAt;
	for (i = 0; i < n.length && isnum == true; i++) { 
		charAt = n.charAt(i); 
		if ( Numbers.indexOf(charAt) == -1) {
			if ( i == 0 && charAt == '-' ) {
			} else {
				isnum = false;
			}
		}
    }
    
    if ( isnum && d && d > 0 ) {
    	var tn = n + "";
    	var pindex = tn.indexOf(".");
    	if ( pindex > 0 ) {
    		var ptemp = tn.length - pindex - 1;
    		if ( ptemp > d ) {
    			isnum = false;
    		}
    	}
    }
	return isnum;
}
//
// Check if value is Integer
//
function isInteger (n) {
	var Numbers = "0123456789";
	var isnum=true;
	var charAt;
	for (i = 0; i < n.length && isnum == true; i++) { 
		charAt = n.charAt(i);
		if ( Numbers.indexOf(charAt) == -1) {
			if ( i == 0 && charAt == '-' ) {
			} else {
				isnum = false;
			}
		}
    }
	return isnum;
}
//
// Trim text
//
function trimText(str) {
	return str.replace(/^\s*|\s*$/g,"");
}

//
// Add new FormElement (Name, Description, Type, Required, Extra, Min, Max)
//
function addFormElement(n, d, t, r, e, min, max) {
	var fe = new FormElement(n, d, t, r, e, min, max);
	formElementList[formElementList.length] = fe;
}
//
// FormElement object
//
function FormElement (pname, pdesc, ptype, preq, pextra, pmin, pmax) {
	this.name = pname;
	this.desc = pdesc;
	this.req = preq;
	this.type = ptype;
	this.extra = pextra;
	this.min = pmin;
	this.max = pmax;
	this.bg = null;
}