//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//                                                                               ++
//**********Author: Kolawole Balgun                                              ++
//**********Year: 2012                                                           ++
//**********Description:                                                         ++
//                      Validator for most input fields                          ++
//                                                                               ++
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++


var numericChar = '1234567890';
var specialChar = '~`!@#$%^&*()_-+={}[];:\'"|\\?/><,|';
var numberBadChar = '~`!@#$%^&*()_={}[];:\'"|\\?/.><,|';
var alphabetChar = "ABCDEFGHIJKLMNOPQRSTUVWXZYabcdefghijklmnopqrstuvwxyz";
var usernamefield = '~`!@#$%^&*()-+={}[];:\'"|\\?/.><,|';
var mobilenumber = "1234567890+-";
var emailBadChar = " /\"';!%^*()=+}{][?/,<>|\\";
var passBadChar = "\/:*?\"<>|'&%$~`"
var err_message = false;


function required(value, elementID, errorID, errorMessage, hintMessage, offfocus){
    if (value != '' && value.replace(/\s+/g, ' ') != '' && value.replace(/\s+/g, ' ') != hintMessage){
        unhighlightField(elementID, errorID);
        return false;
    }else{
        highlightField(elementID, errorID, errorMessage, offfocus);
        return true;
    }
}

function username(value, elementID, errorID, errorMessage, hintMessage, offfocus){
    if(value != "" || value.replace(/\s+/g, ' ') != '' || value.replace(/\s+/g, ' ') != hintMessage){
        for(var i = 0; i < usernamefield.length; i++){
            if(value.indexOf(usernamefield[i]) > -1){
                highlightField(elementID, errorID, errorMessage, offfocus);
                return usernamefield[i];
            }
        }
    }
    
    unhighlightField(elementID, errorID);
    return false;
}

function plainNumber(value, elementID, errorID, errorMessage, hintMessage, offfocus){
    if(value != "" || value.replace(/\s+/g, ' ') == ' '){
        if(value.length < 6){
            highlightField(elementID, errorID, errorMessage, offfocus);
            return true;
        }
        
        for (var i = 0; i<numberBadChar.length; i++){
            var badChar = numberBadChar.charAt(i);
            if(value.indexOf(badChar) > -1){
                highlightField(elementID, errorID, errorMessage, offfocus);
                return true;
            }
        }
        
        for (var j=0; j<alphabetChar.length; j++){
            var badChar2 = alphabetChar.charAt(j);
            if(value.indexOf(badChar2) > -1){
                highlightField(elementID, errorID, errorMessage, offfocus);
                return true;
            }
        }
    }
    
    unhighlightField(elementID, errorID);
    return false;
}

function plainRawNumber(value, elementID, errorID, errorMessage, hintMessage, offfocus){
    if(value != "" || value.replace(/\s+/g, ' ') == ' '){
        for (var i=0; i<specialChar.length; i++){
            if (value.indexOf(specialChar[i]) > -1){
                highlightField(elementID, errorID, errorMessage, offfocus);
                return true
            }
        }
        for (var j=0; j<alphabetChar.length; j++){
            if (value.indexOf(alphabetChar[j]) > -1){
                highlightField(elementID, errorID, errorMessage, offfocus);
                return true
            }
        }
    }
    unhighlightField(elementID, errorID);
    return false
}

function plainAlphabet(value, elementID, errorID, errorMessage, hintMessage, offfocus){
    if(value != "" || value.replace(/\s+/g, ' ') == ' '){
        for(var i = 0; i<numericChar.length; i++){
            if(value.indexOf(numericChar[i]) > -1){
                highlightField(elementID, errorID, errorMessage, offfocus);
                return true;
            }
        }
        
        for(var j = 0; j<specialChar.length; j++){
            if(value.indexOf(specialChar[j]) > -1){
                highlightField(elementID, errorID, errorMessage, offfocus);
                return true;
            }
        }
    }
    
    return false;
}


function emailChecks(value, elementID, errorID, errorMessage, hintMessage, offfocus){
    if (value != "" || value.replace(/\s+/g, ' ') == ' '){
        for (var i = 0; i<emailBadChar.length; i++){
            if(value.indexOf(emailBadChar[i]) > -1){
                highlightField(elementID, errorID, errorMessage, offfocus);
                return true;
            }
        }
        
        var atPosition = value.indexOf('@', 2);
        if (atPosition == -1){
            highlightField(elementID, errorID, errorMessage, offfocus);
            return true;
        }
        
        if(value.indexOf('@', atPosition+1) > -1){
            highlightField(elementID, errorID, errorMessage, offfocus);
            return true;
        }
        
        var dotPosition = value.indexOf('.', atPosition+3);
        if(dotPosition == -1){
            highlightField(elementID, errorID, errorMessage, offfocus);
            return true;
        }
        
        if(dotPosition+3 > value.length){
            highlightField(elementID, errorID, errorMessage, offfocus);
            return true;
        }
    }
    
    unhighlightField(elementID, errorID);
    return false;
}


function passCheck(value, elementID, errorID, errorMessage, hintMessage, offfocus){
    if(value.length < 6){
        highlightField(elementID, errorID, errorMessage, offfocus);
        return true;
    }
    for (var i=0; i<passBadChar.length; i++){
        if(value.indexOf(passBadChar[i]) > -1){
            highlightField(elementID, errorID, errorMessage, offfocus);
            return true;
        }
    }
    
    unhighlightField(elementID, errorID);
    return false;
}

function passCompare(value1, value2, elementID, errorID, errorMessage, hintMessage, offfocus){
    if (value1 != value2){
        highlightField(elementID, errorID, errorMessage, offfocus);
        return true;
    }
    
    unhighlightField(elementID, errorID);
    return false;
}

function nameField(value){
    if(value != "" || value.replace(/\s+/g, ' ') == ' '){
        if(value.split(' ').length < 2 ){
            return true;
        }else{
            for(var i=0; i < value.split(' ').length; i++){
                if(value.split(' ')[i] == ""){
                    return true;
                }
            }
        }
        if(plainAlphabet(value)){
            return true;
        }
    }
    return false;
}

function dateField(value, elementID, errorID, errorMessage, hintMessage, offfocus){
    if(value != "" || value.replace(/\s+/g, ' ') == ' '){
        var dateArr = value.split('-');
        if(dateArr.length != 3){
            highlightField(elementID, errorID, errorMessage, offfocus);
            return true;
        }
        
        for(var i = 0; i < dateArr.length; i++){
            if(isNaN(parseInt(dateArr[i]))){
                highlightField(elementID, errorID, errorMessage, offfocus);
                return true;
            }
        }
        
        if(dateArr[0].length != 4){
            highlightField(elementID, errorID, errorMessage, offfocus);
            return true;
        }
        
        if(dateArr[1].length > 2 || dateArr[1].length <= 0 || dateArr[1] > 12){
            highlightField(elementID, errorID, errorMessage, offfocus);
            return true;
        }
        
        if(dateArr[2].length <= 2 || dateArr[2].length != 0){
            if(parseInt(dateArr[1]) == 9 || parseInt(dateArr[1]) == 4 || parseInt(dateArr[1]) == 6 || parseInt(dateArr[1]) == 11){
                if(parseInt(dateArr[2]) > 30){
                    highlightField(elementID, errorID, errorMessage, offfocus);
                    return true;
                }
            }
            
            if(parseInt(dateArr[1]) == 2){
                if(parseInt(dateArr[2]) > 29){
                    highlightField(elementID, errorID, errorMessage, offfocus);
                    return true;
                }
            }
            
            if(parseInt(dateArr[2]) > 31){
                highlightField(elementID, errorID, errorMessage, offfocus);
                return true;
            }
               
        }
    }
    
    unhighlightField(elementID, errorID);
    return false;
}

function fileField(value, elementID, errorID, errorMessage, ext, offfocus){
    if(value != "" || value.replace(/\s+/g, ' ') == ' '){
        if((value.substring(value.lastIndexOf('.') +1, value.length)).toLowerCase() != ext){
            highlightField(elementID, errorID, errorMessage, offfocus);
            return true;
        }
    }
    unhighlightField(elementID, errorID);
    return false;
}

function mpField(value, elementID, errorID, errorMessage, offfocus){
    if(value != "" || value.replace(/\s+/g, ' ') == ' '){
        var ext = value.substring(value.lastIndexOf('.') +1, value.length).toLowerCase();
        if((ext == 'mp3') || (ext == 'mp4')){
            
        }else{
            highlightField(elementID, errorID, errorMessage, offfocus);
            return true;
        }
    }
    unhighlightField(elementID, errorID);
    return false;
}

function ogField(value, elementID, errorID, errorMessage, offfocus){
    if(value != "" || value.replace(/\s+/g, ' ') == ' '){
        var ext = value.substring(value.lastIndexOf('.') +1, value.length).toLowerCase();
        if((ext == 'ogg') || (ext == 'ogv')){
            
        }else{
            highlightField(elementID, errorID, errorMessage, offfocus);
            return true;
        }
    }
    unhighlightField(elementID, errorID);
    return false;
}


function intfloatField(value, elementID, errorID, errorMessage, offfocus){
    if(isNaN(value)){
        highlightField(elementID, errorID, errorMessage, offfocus);
        return true;
    }
    
    unhighlightField(elementID, errorID);
    return false;
}

function valuelength(value, elementID, errorID, errorMessage, min, max, offfocus){
    if(value != "" || value.replace(/\s+/g, ' ') == ' '){
        if(min){
            if(value.replace(/\s+/g, ' ').length < min){
                highlightField(elementID, errorID, errorMessage, offfocus);
                return true;
            }
        }
        
        if(max){
           if(value.replace(/\s+/g, ' ').length > max){
                highlightField(elementID, errorID, errorMessage, offfocus);
                return true;
            } 
        }
    }
    
    unhighlightField(elementID, errorID);
    return false;
}


function highlightField(elementID, errorID, errorMessage, offfocus){    
    var elementDiv = document.getElementById(elementID);
    var errorDiv = document.getElementById(errorID);
    
    if(elementDiv){
        if(elementDiv.className.indexOf('form_error') == -1){
            elementDiv.className += ' form_error';
        }
        
        if(offfocus != 1){
            elementDiv.focus();
        }
    }
    
    if(errorDiv){
        errorDiv.innerHTML = errorMessage;
    }
}

function unhighlightField(elementID, errorID){
    var elementDiv = document.getElementById(elementID);
    var errorDiv = document.getElementById(errorID);
    
    if(elementDiv){
        if(elementDiv.className.indexOf('form_error') > -1){
            elementDiv.className = elementDiv.className.replace('form_error', '');
        }
    }
    
    if(errorDiv){
        errorDiv.innerHTML = '';
    }
}