// -*- java -*-
// Copyright © 2001 by Apple Computer, Inc., All Rights Reserved.
//
// You may incorporate this Apple sample code into your own code
// without restriction. This Apple sample code has been provided "AS IS"
// and the responsibility for its operation is yours. You may redistribute
// this code, but you are not permitted to redistribute it as
// "Apple sample code" after having made changes.


//<script  LANGUAGE="JavaScript"  src="/validate.js"></script>

//<form  onsubmit="return checkWholeForm(this)"

// I might end up expanding the fields.
function checkWholeForm(theForm) {
    var why = "";
    why += checkName(theForm.firstname.value);
    why += checkName(theForm.lastname.value);
    why += checkTown(theForm.town.value);
    why += checkZIP(theForm.zip.value);
    why += checkPhone(theForm.homephone.value);

    if (why != "") {
	alert(why);
	return false;
    }
    return true;
}

function checkTotal(strng) {
    var error = "";
    if (strng.length == 0) {
	error = "You haven't indicated how many will attend.\n"
	    }
    if (strng * 1 == 0) {
	error = "You haven't indicated how many will attend.\n"
	    }
    return error;	  
}

function checkName(strng) {
    var error = "";
    if (strng.length == 0) {
	error = "The First or Last name field has not been filled in.\n"
	    }
    return error;	  
}

function checkTown(strng) {
    var error = "";
    if (strng.length == 0) {
	error = "The Town field has not been filled in.\n"
	    }
    return error;	  
}

function checkAddress(strng) {
    var error = "";
    if (strng.length == 0) {
	error = "The Street field has not been filled in.\n"
	    }
    return error;	  
}

function checkCSZ(strng) {
    var error = "";
    if (strng.length == 0) {
	error = "The City, State, Zip field has not been filled in.\n"
	    }
    return error;	  
}

//     why += checkZIP(theForm.zip.value);
function checkZIP(strng) {
    var error = "";
    if (strng.length == 0) {
	error = "The Zip field has not been filled in.\n"
	    }
    return error;	  
}

// email

function checkEmail (strng) {
    var error="";
    if (strng == "") {
	error = "You didn't enter an email address.\n";
    }

    var emailFilter=/^.+@.+\..{2,3}$/;
    if (!(emailFilter.test(strng))) { 
       error = "Please enter a valid email address.\n";
    }
    else {
//test email for illegal characters
	var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/
	    if (strng.match(illegalChars)) {
		error = "The email address contains illegal characters.\n";
	    }
    }
    return error;    
}


// phone number - strip out delimiters and check for 10 digits

function checkPhone (strng) {
    var error = "";
    if (strng == "") {
	error = "You didn't enter a phone number.\n";
    }
    
    //strip out acceptable non-numeric characters
    var stripped = strng.replace(/[\(\)\.\-\ ]/g, ''); 
    if (isNaN(parseInt(stripped))) {
	error = "The phone number contains illegal characters.";
	
    }
    if (!(stripped.length == 10)) {
	error = "The phone number is the wrong length. Make sure you included an area code.\n";
    } 
    return error;
}


// password - between 6-8 chars, uppercase, lowercase, and numeral

function checkPassword (strng) {
    var error = "";
    if (strng == "") {
	error = "You didn't enter a password.\n";
    }

    var illegalChars = /[\W_]/; // allow only letters and numbers
    
    if ((strng.length < 6) || (strng.length > 8)) {
       error = "The password is the wrong length.\n";
    }
    else if (illegalChars.test(strng)) {
      error = "The password contains illegal characters.\n";
    } 
    else if (!((strng.search(/(a-z)+/)) && (strng.search(/(A-Z)+/)) && (strng.search(/(0-9)+/)))) {
       error = "The password must contain at least one uppercase letter, one lowercase letter, and one numeral.\n";
    }  
return error;    
}    


// username - 4-10 chars, uc, lc, and underscore only.

function checkUsername (strng) {
    var error = "";
    if (strng == "") {
	error = "You didn't enter a username.\n";
    }

    var illegalChars = /\W/; // allow letters, numbers, and underscores
    if ((strng.length < 4) || (strng.length > 10)) {
       error = "The username is the wrong length.\n";
    }
    else if (illegalChars.test(strng)) {
    error = "The username contains illegal characters.\n";
    } 
return error;
}       


// non-empty textbox

function isEmpty(strng) {
    var error = "";
    if (strng.length == 0) {
	error = "The mandatory text area has not been filled in.\n"
	    }
    return error;	  
}

// was textbox altered

function isDifferent(strng) {
    var error = ""; 
    if (strng != "Can\'t touch this!") {
	error = "You altered the inviolate text area.\n";
    }
    return error;
}

// exactly one radio button is chosen

function checkRadio(checkvalue) {
    var error = "";
    if (!(checkvalue)) {
	error = "Please check a radio button.\n";
    }
    return error;
}

// valid selector from dropdown list

function checkDropdown(choice) {
    var error = "";
    if (choice == 0) {
	error = "You didn't choose an option from the drop-down list.\n";
    }    
    return error;
}