/*********************************************
 * 파일명: validate.js
 * 기능: 유연한 자동 폼 검사기
 * 만든이: 거친마루 <comfuture@studyfriend.net>
 * 날짜: 2002-10-01
 **********************************************/

/// 에러메시지 포멧 정의 ///
var NO_BLANK = "{name+은는} 필수항목입니다";
var NOT_VALID = "{name+이가} 올바르지 않습니다";
var NOT_EQUAL = "{name+이가} 서로 일치하지 않습니다";
var TOO_LONG = "{name}의 길이가 초과되었습니다";
var TOO_SHORT = "{name}가 지정된 길이 미만입니다";

/// 스트링 객체에 메소드 추가 ///
String.prototype.trim = function(str) {
	str = this != window ? this : str;
	return str.replace(/^\s+/g,'').replace(/\s+$/g,'');
}

String.prototype.hasFinalConsonant = function(str) {
	str = this != window ? this : str;
	var strTemp = str.substr(str.length-1);
	return ((strTemp.charCodeAt(0)-16)%28!=0);
}

function josa(str,tail) {
	return (str.hasFinalConsonant()) ? tail.substring(0,1) : tail.substring(1,2);
}

function validate(form) {
	for (i = 0; i < form.elements.length; i++ ) {
		var el = form.elements[i];
		if (el.type == "text") el.value = el.value.trim();

		if (el.getAttribute("required") != null) {
			if (el.value == null || el.value == "") {
				return doError(el,NO_BLANK);
			}
		}

		if (el.getAttribute("maxbyte") != null && el.value != "") {
			var len = 0;
			for(j=0; j<el.value.length; j++) {
				var str = el.value.charAt(j);
				len += (str.charCodeAt() > 128) ? 2 : 1
			}
			if (len > parseInt(el.getAttribute("maxbyte"))) {
				maxbyte = el.getAttribute("maxbyte");
				return doError(el,TOO_LONG+" (최대 "+maxbyte+" 바이트)");
			}
		}

		if (el.getAttribute("minbyte") != null && el.value != "") {
			var len = 0;
			for(j=0; j<el.value.length; j++) {
				var str = el.value.charAt(j);
				len += (str.charCodeAt() > 128) ? 2 : 1
			}
			if (len < parseInt(el.getAttribute("minbyte"))) {
				minbyte = el.getAttribute("minbyte");
				return doError(el,TOO_SHORT+"  (최소 "+minbyte+" 바이트)");
			}
		}

		if (el.getAttribute("option") != null && el.value != "") {
			if (!funcs[el.getAttribute("option")](el)) return false;
		}

		if (el.getAttribute("equal") != null && el.value != "") {
			var equal = document.getElementById (el.getAttribute("equal"));
			if ((equal.value != "") && (equal.value != el.value)) return doError(el, NOT_EQUAL);
		}
	}
	return true;
}

function doError (el, type, action) {
	var pattern = /{([a-zA-Z0-9_]+)\+?([가-힣]{2})?}/;
	var name = (hname = el.getAttribute("hname")) ? hname : el.getAttribute("name");
	pattern.exec(type);
	var tail = (RegExp.$2) ? josa(eval(RegExp.$1),RegExp.$2) : "";
	alert(type.replace(pattern,eval(RegExp.$1) + tail));
	if (action == "sel") {
		el.select();
	} else if (action == "del")	{
		el.value = "";
	}
	el.focus();
	return false;
}

/// 특수 패턴 검사 함수 매핑 ///
var funcs = new Array();
funcs['userid'] = isValidUserid;
funcs['jumin'] = isValidJumin;
funcs['bizno'] = isValidBizNo;	// 문제가 있어서 사용하지 않음.
funcs['email'] = isValidEmail;
funcs['phone'] = isValidPhone;
funcs['hangul'] = hasHangul;
funcs['nohangul'] = isNoHangul;
funcs['engonly'] = alphaOnly;
funcs['number'] = isNumeric;
funcs['domain'] = isValidDomain;
funcs['ipaddr'] = isIpAddr;

/// 패턴 검사 함수들 ///
function isValidUserid(el) {
	var pattern = /^[a-zA-Z]{1}[a-zA-Z0-9_]{3,11}$/;
	return (pattern.test(el.value)) ? true : doError(el,"{name+은는} 4자이상 12자 미만이어야 하고,\n 영문,숫자만 사용할 수 있습니다");
}

function isValidJumin(el) {
	var pattern = /^([0-9]{6})-?([0-9]{7})$/;
	var num = el.value;

	if ((together = el.getAttribute ("together")) && (document.getElementById (together))) {
		num += document.getElementById (together).value;
	}

	if (!pattern.test(num)) return doError(el,NOT_VALID);
	num = RegExp.$1 + RegExp.$2;

	var sum = 0;
	var last = num.charCodeAt(12) - 0x30;
	var bases = "234567892345";
	for (var i=0; i<12; i++) {
		if (isNaN(num.substring(i,i+1))) return doError(el,NOT_VALID);
		sum += (num.charCodeAt(i) - 0x30) * (bases.charCodeAt(i) - 0x30);
	}
	var mod = sum % 11;
	return ((11 - mod) % 10 == last) ? true : doError(el,NOT_VALID);
}

function isValidBizNo(el) {
	var pattern = /([0-9]{3})-?([0-9]{2})-?([0-9]{5})/;
	var num = el.value;
	if (!pattern.test(num)) return doError(el,NOT_VALID);
	num = RegExp.$1 + RegExp.$2 + RegExp.$3;
	var cVal = 0;
	for (var i=0; i<8; i++) {
		var cKeyNum = parseInt(((_tmp = i % 3) == 0) ? 1 : ( _tmp  == 1 ) ? 3 : 7);
		cVal += (parseFloat(num.substring(i,i+1)) * cKeyNum) % 10;
	}
	var li_temp = parseFloat(num.substring(i,i+1)) * 5 + '0';
	cVal += parseFloat(li_temp.substring(0,1)) + parseFloat(li_temp.substring(1,2));
	return (parseInt(num.substring(9,10)) == 10-(cVal % 10)%10) ? true : doError(el,NOT_VALID);
}

function isValidEmail(el) {
	var pattern = /^[_a-zA-Z0-9-\.]+@[\.a-zA-Z0-9-]+\.[a-zA-Z]+$/;
	return (pattern.test(el.value)) ? true : doError(el,NOT_VALID);
}

function isValidPhone(el) {
	var pattern = /^([0]{1}[0-9]{1,2})-?([1-9]{1}[0-9]{2,3})-?([0-9]{4})$/;
	var phone = el.value;

	if (together = el.getAttribute ("together")) {
		phone1 = together.split(",");
		if (document.getElementById (phone1[0])) phone += document.getElementById (phone1[0]).value;
		if (document.getElementById (phone1[1])) phone += document.getElementById (phone1[1]).value;
	}

	if (pattern.exec(phone)) {
		if(RegExp.$1 == "010"
			|| RegExp.$1 == "011"
			|| RegExp.$1 == "016"
			|| RegExp.$1 == "017"
			|| RegExp.$1 == "018"
			|| RegExp.$1 == "019"
			) {
			el.value = RegExp.$1 + "-" + RegExp.$2 + "-" + RegExp.$3;
		}
		return true;
	} else return doError(el,NOT_VALID);
}

function hasHangul(el) {
	var pattern = /[가-힣]/;
	return (pattern.test(el.value)) ? true : doError(el,"{name+은는} 반드시 한글을 포함해야 합니다");
}

function isNoHangul( el) {
	var str = el.value;
	var reg = /[가-힣]/;
	if (reg.test(str)) return doError(el,NOT_VALID);
	else return true;
}

function alphaOnly(el) {
	var pattern = /^[a-zA-Z]+$/;
	return (pattern.test(el.value)) ? true : doError(el,NOT_VALID);
}

function isNumeric(el) {
	var pattern = /^[0-9]+$/;
	return (pattern.test(el.value)) ? true : doError(el,"{name+은는} 반드시 숫자로만 입력해야 합니다");
}

function isValidDomain(el) {
	var pattern = /^.+(\.[a-zA-Z]{2,4})$/;
	return (pattern.test(el.value)) ? true : doError(el,NOT_VALID);
}

function isIpAddr(el) {
	var regIP =/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$/;
	if(!regIP.test(el.value)) return doError(el,NOT_VALID);
	var tmp = el.value.split(".");
	for(i=0; i<tmp.length; i++) {
		if(parseInt(tmp[i]) > 255) return doError(el,NOT_VALID);
	}
	return true;
}

function checked_it(name,value) {
	var el = document.all.tags("input");
	for (i = 0 ; i < el.length; i++) {
		if (el[i].name == name && el[i].value == value) el[i].checked = true;
	}
}

function selected_it(name,value) {
	var el = document.all.tags("select");
	for (i = 0; i < el.length; i++) {
		if (el[i].name == name) {
			if (el[i].size > 1 && el[i].getAttribute("multiple") != null ) {
				for (k=0; k < value.length; k++) {
					//alert(value[k]);
					for (j = 0; j < el[i].options.length; j++ ) {
						if (el[i].options[j].value == value[k]) el[i].selectedIndex[++x] = j;
					}
				}
			} else {
				for (j = 0; j < el[i].options.length; j++ ) {
					if (el[i].options[j].value == value) el[i].selectedIndex = j;
				}
			}
		}
	}
}

function disabled_it(name) {
	var arr = new Array("input", "select", "textarea");
	for(k=0; k<arr.length; k++) {
		var el = document.all.tags(arr[k]);
		for (i = 0 ; i < el.length; i++) {
			if (el[i].name == name) el[i].disabled = true;
		}
	}
}