/*-----------------------------------------------------------//
* functon :
.setFunc(Obj), .setForm(Obj), .setCheckFields(Array) , .setUnCheckFields(Array) , 
.setParam(Obj, hname, required/option, Key:Value) , .delParam(Key, Value)

* attribute : trim, required, requirenum, minbyte, maxbyte, mincheck, maxcheck, minselect, maxselect, option, match, span, glue, pattern, imageonly

* option : email, hangul, engonly, number, residentno, jumin, foreignerno, bizno, phone, homephone, handphone, userid, userpw 
//-----------------------------------------------------------*/

function validate(form, fields) {
    var lah = new FormChecker(form);
    if (fields) lah.setCheckFields(fields);
    var wmf = lah.go();
    if (wmf == false) alert(lah.getErrorMessage());
    return wmf;
}

FormChecker = function(form) {
    this.FUNC_MAP = {
        email     : "this.func_email",
        hangul    : "this.func_hangul",
        engonly   : "this.func_engonly",
        number    : "this.func_number",
        residentno: "this.func_residentno", 
        jumin     : "this.func_jumin",
        foreignerno:"this.func_foreignerno",
        bizno     : "this.func_bizno",
        phone     : "this.func_phone",
        homephone : "this.func_homephone",
        handphone : "this.func_handphone",
        userid    : "this.func_userid",
        userpw    : "this.func_userpw"            
    }
    this.ERR_MSG = {
        system   : "FormChecker Error: ",
        required : "¹Ýµå½Ã ÀÔ·ÂÇÏ¼Å¾ß ÇÏ´Â »çÇ×ÀÔ´Ï´Ù.",
        requirenum:"ÀÌ Ç׸ñµé Áß¿¡ {requirenum}°³ ÀÌ»óÀÇ Ç׸ñÀÌ ÀԷµǾî¾ß ÇÕ´Ï´Ù.",
        notequal : "ÀÔ·ÂµÈ ³»¿ëÀÌ ÀÏÄ¡ÇÏÁö ¾Ê½À´Ï´Ù.",
        invalid  : "ÀÔ·ÂµÈ ³»¿ëÀÌ Çü½Ä¿¡ ¾î±ß³³´Ï´Ù.",
        minbyte  : "ÀÔ·ÂµÈ ³»¿ëÀÇ ±æÀÌ°¡ {minbyte}Byte ÀÌ»óÀ̾î¾ß ÇÕ´Ï´Ù.",
        maxbyte  : "ÀÔ·ÂµÈ ³»¿ëÀÇ ±æÀÌ°¡ {maxbyte}Byte¸¦ ÃÊ°úÇÒ ¼ö ¾ø½À´Ï´Ù.",
        mincheck : "{mincheck}°³ÀÇ Ç׸ñÀÌ»óÀ¸·Î ¼±ÅÃÇϼ¼¿ä.",
        maxcheck : "{maxcheck}°³ÀÇ Ç׸ñÀÌÇÏ·Î ¼±ÅÃÇϼ¼¿ä.",
        minselect: "{minselect}°³ÀÇ Ç׸ñÀÌ»óÀ¸·Î ¼±ÅÃÇϼ¼¿ä.",
        maxselect: "{maxselect}°³ÀÇ Ç׸ñÀÌÇÏ·Î ¼±ÅÃÇϼ¼¿ä.",
        imageonly: "À̹ÌÁö ÆÄÀϸ¸ ÷ºÎÇÒ ¼ö ÀÖ½À´Ï´Ù.",
        userid   : "4ÀÚÀÌ»ó 16ÀÚ ¹Ì¸¸,\n ¿µ¹®,¼ýÀÚ, _ ¹®ÀÚ¸¸ »ç¿ëÇÒ ¼ö ÀÖ½À´Ï´Ù",
        userpw   : "4ÀÚÀÌ»ó 16ÀÚ ¹Ì¸¸À¸·Î ÀÔ·ÂÇØÁÖ¼¼¿ä",
        handphone : "¿¹) 01X-XXXX-XXXX ÀÇ Çü½Ä¿¡ ¸ÂÃç ÀÔ·ÂÇØÁÖ¼¼¿ä",
        homephone : "¿¹) 0XX-XXXX-XXXX ¶Ç´Â 15/16XX-XXXX µîÀÇ Çü½Ä¿¡ ¸ÂÃç ÀÔ·ÂÇØÁÖ¼¼¿ä"
    }
    this.ERR_DO = {
        text     : "select focus",
        password : "delete focus",
        select   : "focus",
        check    : "focus",
        radio    : "focus",
        file     : "focus",
        hidden   : ""
    }
    this.ERR_SYS = '_SYSERR_';
    this.fields = form.elements;
    this.form = form;
    this.errMsg = "";
}

FormChecker.prototype.setForm = function(form) {
    this.form = form;
}

FormChecker.prototype.setFunc = function(map, func) {
    if (typeof(this.FUNC_MAP[map]) == "string") return;
    this.FUNC_MAP[map] = func;
}

FormChecker.prototype.setCheckFields = function(fields) {
    this.fields = [];
    if(typeof(fields) == 'string') 
        this.fields = [this.form.elements[fields]];
    else
        for(var i=0, s=fields.length; i<s; i++)
            this.fields[this.fields.length] = this.form.elements[fields[i]];
}

FormChecker.prototype.setUnCheckFields = function(fields) {
    this.fields = [];
    var _isUnCheckEl;

    if(typeof(fields) == 'string')
        fields = [fields];
    for (var i=0, s=this.form.elements.length; i<s; i++) {
        _isUnCheckEl = false;
        for (var j=0, t=fields.length; j<t; j++) {
            if (this.form.elements[i] == this.form.elements[fields[j]]) {
                _isUnCheckEl = true;
                break;
            }
        }
        if (!_isUnCheckEl) this.fields[this.fields.length] = this.form.elements[i];
    }
}

FormChecker.prototype.setParam = function(el) {
    var agCnt = arguments.length;
    for(i=1; i<agCnt; i++) {
        if(arguments[i]!=null && arguments[i]!='undefined' && arguments[i]!='') switch (i) {
            case 1  : el.setAttribute('hname'    , arguments[i]); break;
            case 2  : el.setAttribute('required' , arguments[i]); break; 
            default : var _temp = arguments[i].split(":"); var _tmp=_temp[0]; _temp.splice(0,1); el.setAttribute(_tmp, _temp.join(":").replace(/^\s+/, "").replace(/\s+$/, "")); break;
        }
    }
}

FormChecker.prototype.delParam = function(el, name) {
    el.removeAttribute(name);
}

FormChecker.prototype.go = function() {
    try {
        for (var i=0,s=this.fields.length; i<s; i++) {
            var el = this.fields[i];
            if (!this.isValidElement(el)) continue;

            var elType = this.getType(el);
            var trim = el.getAttribute("TRIM");
            var required = el.getAttribute("REQUIRED");
            var requirenum = el.getAttribute("REQUIRENUM");
            var minbyte = parseInt(el.getAttribute("MINBYTE"),10);
            var maxbyte = parseInt(el.getAttribute("MAXBYTE"),10);
            var mincheck = parseInt(el.getAttribute("MINCHECK"),10);
            var maxcheck = parseInt(el.getAttribute("MAXCHECK"),10);
            var minselect = parseInt(el.getAttribute("MINSELECT"),10);
            var maxselect = parseInt(el.getAttribute("MAXSELECT"),10);
            var option = el.getAttribute("OPTION");
            var match = el.getAttribute("MATCH");
            var span = el.getAttribute("SPAN");
            var glue = el.getAttribute("GLUE");
            var pattern = el.getAttribute("PATTERN");
            var imageonly = el.getAttribute("IMAGEONLY");

            if (trim != null && (elType == "text" || elType == "hidden")) {
                switch (trim) {
                case "trim":
                    el.value = el.value.replace(/^\s+/, "").replace(/\s+$/, "");
                    break;
                case "compress":
                    el.value = el.value.replace(/\s+/, "");
                    break;
                case "ltrim":
                    el.value = el.value.replace(/^\s+/, "");
                    break;
                case "rtrim":
                    el.value = el.value.replace(/\s+$/, "");
                    break;
                }
            }

            var elEmpty = this.isEmpty(el, elType);

            if (required != null) {
                if (required == "required") {
                    if (elEmpty) return this.raiseError(el, "required");
                } else {
                    requirenum = parseInt(requirenum, 10);
                    var _num = 0;
                    var _name = [];
                    if (requirenum > 0) {
                        for (var j=0; j<this.form.elements.length; j++) {
                            var _el = this.form.elements[j];
                            if (required == _el.getAttribute("REQUIRED")) {
                                if(!this.isEmpty(_el, this.getType(_el))) _num++;
                                _name[_name.length] = this.getName(_el);
                            }
                        }
                        if(_num < requirenum)
                            return this.raiseError(el, "requirenum", _name.join(", "));
                    }
                }
            }
            if ((minbyte > 0 || maxbyte > 0) && (elType == "text" || elType == "hidden")) {
                var _tmp = el.value;
                var _len = el.value.length;
                for (j=0; j<_tmp.length; j++) {
                    if (_tmp.charCodeAt(j) > 128) _len++;
                }
                if (minbyte > 0 && _len < minbyte) return this.raiseError(el, "minbyte");
                if (maxbyte > 0 && _len > maxbyte) return this.raiseError(el, "maxbyte");
            }
            if (match != null && elType != "file") {
                if (typeof this.form.elements[match] == "undefined")
                    return this.raiseError(this.ERR_SYS, "Element '"+ match +"' is not found.");
                else if (el.value != this.form.elements[match].value)
                    return this.raiseError(el, "notequal");
            }
            if (option != null && !elEmpty && elType != "file") {
                var _options = option.split(" ");
                for (var j in _options) {
                    var _func = eval(this.FUNC_MAP[_options[j]]);
                    if (span != null) {
                        var _value = [];
                        for (var k=0; k<parseInt(span,10); k++) {
                            try {
                                _value[k] = this.fields[i+k].value;
                            } catch (e) {
                                return this.raiseError(this.ERR_SYS,  (i+k) +"th Element is not found.");
                            }
                        }
                        try {
                            var _result = _func(el, _value.join(glue == null ? "" : glue));
                        } catch (e) {
                            return this.raiseError(this.ERR_SYS,  "function map '"+ _options[j] +"' is not exist.");
                        }
                        if (_result !== true) return this.raiseError(el, _result);
                    } else {
                        try {
                            var _result = _func(el);
                        } catch (e) {
                            return this.raiseError(this.ERR_SYS,  "function map '"+ _options[j] +"' is not exist.");
                        }
                        if (_result !== true) return this.raiseError(el, _result);
                    }
                }
            }
            if (pattern != null && !elEmpty && elType != "file") {
                try {
                    pattern = new RegExp(pattern);
                } catch (e) {
                    return this.raiseError(this.ERR_SYS, "Invalid Regular Expression '"+ pattern +"'");
                }
                if (!pattern.test(el.value)) return this.raiseError(el, "invalid");
            }
            if ((mincheck > 0 || maxcheck > 0) && elType == "check") {
                var _checks = this.form.elements[el.name];
                var _num = 0;
                if (typeof _checks.length != "undefined") {
                    for (var j=0; j<_checks.length; j++) {
                        if (_checks[j].checked) _num++;
                    }
                } else {
                    if (_checks.checked) _num++;
                }
                if (mincheck > 0 && _num < mincheck) return this.raiseError(el, "mincheck");
                if (maxcheck > 0 && _num > maxcheck) return this.raiseError(el, "maxcheck");
            }
            if ((minselect > 0 || maxselect > 0) && elType == "multiselect") {
                var _num = 0;
                for (var j=0; j<el.options.length; j++) {
                    if (el.options[j].selected) _num++;
                }
                if (minselect > 0 && _num < minselect) return this.raiseError(el, "minselect");
                if (maxselect > 0 && _num > maxselect) return this.raiseError(el, "maxselect");
            }
            if (imageonly != null && elType == "file") {
                var fn = el.value;
                if (fn != "") {
                    var dotIndex = fn.lastIndexOf(".");
                    var ext = fn.substring(dotIndex+1).toLowerCase();
                    if(ext != "jpg" && ext != "jpeg" && ext != "gif" && ext != "png")
                        return this.raiseError(el, "imageonly");
                }
            }
        }
        return true;
    } catch(e) {
        alert(e.description)
        return false;
    }
}

FormChecker.prototype.isValidElement = function(el) {
    return el.name && el.tagName.match(/^input|select|textarea$/i) && !el.disabled;
}

FormChecker.prototype.isEmpty = function(el, type) {
    switch (type) {
    case "file": case "text": case "hidden":
        if (el.value == null || el.value == "") return true;
        break;
    case "select": case "multiselect":
        if (el.selectedIndex == -1 || el[el.selectedIndex].value == null ||
                el[el.selectedIndex].value == "")
            return true;
        break;
    case "check": case "radio":
        var elCheck = this.form.elements[el.name];
        var elChecked = false;
        if (typeof elCheck.length != "undefined") {
            for (var j=0; j<elCheck.length; j++) {
                if (elCheck[j].checked == true) elChecked = true;
            }
        } else {
            if (elCheck.checked == true) elChecked = true;
        }
        if (elChecked == false) return true;
        break;
    }
    return false;
}

FormChecker.prototype.getType = function(el) {
    switch (el.tagName.toLowerCase()) {
    case "select":
        return el.multiple == true ? "multiselect" : "select";
    case "textarea": return "text";
    case "input":
        switch (el.type.toLowerCase()) {
        case "radio": return "radio";
        case "checkbox": return "check";
        case "file": return "file";
        case "text": case "password": return "text";
        case "hidden": return "hidden";
        }
        break;
    }
}

FormChecker.prototype.raiseError = function(el, type, elName) {
    if (el == this.ERR_SYS) {
        this.errMsg = this.ERR_MSG["system"] + type;
        return false;
    }
    var pattern = /\{([a-zA-Z0-9_]+)\}/i;
    var msg = this.ERR_MSG[type] ? this.ERR_MSG[type] : type;
    var elType = this.getType(el);
    var elName = elName ? elName : this.getName(el);
    var errDo = el.getAttribute("ERRDO") ? el.getAttribute("ERRDO") : this.ERR_DO[elType];
    var _errDos = errDo ? errDo.split(" ") : [];

    if (el.getAttribute("ERRMSG") != null) msg = el.getAttribute("ERRMSG");
    if (pattern.test(msg) == true) {
        while (pattern.exec(msg)) msg = msg.replace(pattern, el.getAttribute(RegExp.$1));
    }
    for (var i in _errDos) {
        switch (_errDos[i]) {
        case "delete": el.value = ""; break;
        case "select": el.select(); break;
        case "focus":  el.focus(); break;
        }
    }
    this.errMsg = "["+ elName +"]\n   - "+ msg +"\n";
    return false;
}

FormChecker.prototype.getErrorMessage = function() {
    return this.errMsg;
}

FormChecker.prototype.getName = function(el) {
    return el.getAttribute("HNAME") == null || el.getAttribute("HNAME") == ""
        ? el.name : el.getAttribute("HNAME");
}
/**
* validate functions
*/
FormChecker.prototype.func_email = function(el,value) {
    var value = value ? value : el.value;
    var pattern = /^[_a-zA-Z0-9-\.]+@[\.a-zA-Z0-9-]+\.[a-zA-Z]+$/;
    return pattern.test(value) ? true : "invalid";
}

FormChecker.prototype.func_hangul = function(el) {
    var pattern = /[°¡-Èþ]/;
    return pattern.test(el.value) ? true : "¹Ýµå½Ã ÇѱÛÀ» Æ÷ÇÔÇØ¾ß ÇÕ´Ï´Ù";
}

FormChecker.prototype.func_engonly = function(el) {
    var pattern = /^[a-zA-Z]+$/;
    return pattern.test(el.value) ? true : "invalid";
}

FormChecker.prototype.func_number = function(el) {
    var pattern = /^[0-9]+$/;
    return pattern.test(el.value) ? true : "¹Ýµå½Ã ¼ýÀڷθ¸ ÀÔ·ÂÇØ¾ß ÇÕ´Ï´Ù";
}

FormChecker.prototype.func_residentno = function(el,value) {
    var pattern = /^(\d{6})-?(\d{5}(\d{1})\d{1})$/;
    var num = value ? value : el.value;
    if (!pattern.test(num)) return "invalid";
    num = RegExp.$1 + RegExp.$2;
    if (RegExp.$3 == 7 || RegExp.$3 == 8 || RegExp.$4 == 9)
        if ((num[7]*10 + num[8]) %2) return "invalid";

    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 "invalid";
        sum += (num.charCodeAt(i) - 0x30) * (bases.charCodeAt(i) - 0x30);
    }
    var mod = sum % 11;
    if(RegExp.$3 == 7 || RegExp.$3 == 8 || RegExp.$4 == 9)
        return (11 - mod + 2) % 10 == last ? true : "invalid"; 
    else
        return (11 - mod) % 10 == last ? true : "invalid";
}

FormChecker.prototype.func_jumin = function(el,value) {
    var pattern = /^([0-9]{6})-?([0-9]{7})$/;
    var num = value ? value : el.value;
    
    if (!pattern.test(num)) return "invalid";
    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 "invalid";
        sum += (num.charCodeAt(i) - 0x30) * (bases.charCodeAt(i) - 0x30);
    }
    var mod = sum % 11;
    return (11 - mod) % 10 == last ? true : "invalid";
}

FormChecker.prototype.func_foreignerno = function(el,value) {
    var pattern = /^(\d{6})-?(\d{5}[7-9]\d{1})$/;
    var num = value ? value : el.value;
    if (!pattern.test(num)) return "invalid";
    num = RegExp.$1 + RegExp.$2;
    if ((num[7]*10 + num[8]) %2) return "invalid";

    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 "invalid";
        sum += (num.charCodeAt(i) - 0x30) * (bases.charCodeAt(i) - 0x30);
    }
    var mod = sum % 11;
    return (11 - mod + 2) % 10 == last ? true : "invalid"; 
}

FormChecker.prototype.func_bizno = function(el,value) {
    var pattern = /([0-9]{3})-?([0-9]{2})-?([0-9]{5})/;
    var num = value ? value : el.value;
    if (!pattern.test(num)) return "invalid";
    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 : "invalid";
}

FormChecker.prototype.func_phone = function(el,value) {
    var pattern = /^(0[2-8][0-5]?|01[01346-9])-?([1-9]{1}[0-9]{2,3})-?([0-9]{4})$/;
    var pattern15xx = /^(1544|1566|1577|1588|1644|1688)-?([0-9]{4})$/;
    var num = value ? value : el.value;
    var rtn = pattern.exec(num) ? true : "invalid";
    if(rtn==true && !el.getAttribute("span"))
        el.value = RegExp.$1 + "-" + RegExp.$2 + "-" + RegExp.$3;
    if(rtn==true)
            return rtn;
    rtn = pattern15xx.exec(num) ? true : "invalid"
    if(rtn==true && !el.getAttribute("span"))
        el.value = RegExp.$1 + "-" + RegExp.$2;
    return rtn;
} 

FormChecker.prototype.func_homephone = function(el,value) {
    var pattern = /^(0[2-8][0-5]?)-?([1-9]{1}[0-9]{2,3})-?([0-9]{4})$/;
    var pattern15xx = /^(1544|1566|1577|1588|1644|1688)-?([0-9]{4})$/;
    var num = value ? value : el.value;
    var rtn = pattern.exec(num) ? true : "homephone";
    if(rtn==true && !el.getAttribute("span"))
        el.value = RegExp.$1 + "-" + RegExp.$2 + "-" + RegExp.$3;
    if(rtn==true)
            return rtn;
    rtn = pattern15xx.exec(num) ? true : "homephone"
    if(rtn==true && !el.getAttribute("span"))
        el.value = RegExp.$1 + "-" + RegExp.$2;
    return rtn;
}

FormChecker.prototype.func_handphone = function(el,value) {
    var pattern = /^(01[01346-9])-?([0-9]{2,4})-?([0-9]{4})$/;
    var num = value ? value : el.value;
    var rtn = pattern.exec(num) ? true : "handphone";
    if(rtn==true && !el.getAttribute("span"))
        el.value = RegExp.$1 + "-" + RegExp.$2 + "-" + RegExp.$3;
    return rtn;
}

FormChecker.prototype.func_userid = function(el) {
   var pattern = /^[a-zA-Z]{1}[a-zA-Z0-9_]{3,16}$/;
   return (pattern.test(el.value)) ? true : "userid" ;
}

FormChecker.prototype.func_userpw = function(el) {
   var pattern = /^.{4,16}$/;
   return (pattern.test(el.value)) ? true : "userpw";
}