var Accounts = {}


function Submit_Resend_Confirmation_Form()
{
    var form = $("confirm");
    form.submit();
}


//========= Modify Profile
function Submit_Profile()
{
    var errors = []
    
    var result = Validate_Password(true);
    if(result) errors.push(result);

    result = Validate_Email(true);
    if(result) errors.push(result);
    
    if(errors.length > 0 )
    {
        alert(errors[0]);
        return false;
    }
    
    var pass1 = $F("post_password");

    if(pass1 == '' || pass1 == null)
        $("post_cryptpassword").value = '';
    else
        $("post_cryptpassword").value = SHA1(window.SALT + pass1);    

    $("post_password").value = "";
    $("post_password_confirm").value = "";
    
    return true;
}


//========= Signin
function Sign_In()
{
    var pass1 = $F("post_password");

    $("post_cryptpassword").value = SHA1(window.challenge + SHA1(window.SALT + pass1));
    $("post_cryptpassword_old").value = SHA1(window.challenge + SHA1(window.SALT + SHA1(pass1)));	
    $("post_password").value = "";
    
    var form = $("signin_form");
    UI.show_Busy_Message("Signing In");
    form.request({evalScripts: false, onSuccess: Sign_in_Response, onFailure: Sign_in_Failed});
    form.disable();

    return false;
}

function Sign_in_Response(xhr)
{
    $("signin_form").enable();
    
    if(xhr.responseText == "OK")
    {
        UI.closeLightbox();
                
        if(window.redirect)
        {
            window.location.href = window.redirect;
        }
        else
            new Ajax.Updater(Common.noncontent,"/account/top");
	
		UI.show_Positive_Message("Signed In");
		UI.hide_Message.delay(UI.MSG_DELAY);			
    }
    else
    {
        $('signin_errors').update(xhr.responseText);
		UI.hide_Message();		
    }
}

function Sign_in_Failed(xhr)
{
    UI.show_Error_Message("Something is wrong with our servers, please try again later");
	UI.hide_Message.delay(UI.MSG_DELAY);

    lightbox.prototype.deactivate();
}

//========= Signup

function Submit_Signup_Form()
{
    var errors = Validate_Fields();
    
    if(errors)
    {
        alert(errors[0]);
        return false;
    }
    
    var login = $F("post_login");
    var pass1 = $F("post_password");
    var pass2 = $F("post_password_confirm");
    var email = $F("post_email");

    $("post_cryptpassword").value = SHA1(window.SALT + pass1);;
    $("post_password").value = "";
    $("post_password_confirm").value = "";
    
    var form = $("signup");
    form.submit();
}

function Validate_Fields()
{
    var errors = [];    
    var result;

    result = Validate_Login_ID();
    if(result) errors.push(result);

    result = Validate_Password();
    if(result) errors.push(result);

    result = Validate_Email();
    if(result) errors.push(result);

    if(errors.length > 0)
        return errors;
    else
        return null;
}


function Validate_Login_ID()
{
    if(!$("post_login"))
        return null;
    
    var login = $F("post_login");

    if(login == "")
        return "Please enter a username";
    
    //Minimum length of ID
    if(login.length < 2)
        return "Username must be at least 2 letters.";
        
    if(!login.match(/^[a-zA-Z0-9]+$/))
        return "Username must be only letters and numbers.";
}

function Validate_Password(allow_blank)
{
    var pass1 = $F("post_password");
    var pass2 = $F("post_password_confirm");

    if(allow_blank && pass1 == '' && pass2 == '')
        return;

    if(pass1 != pass2)
        return "Password and Confirm password must be the same.";
        
    if(pass1 == "")
        return "Please enter a password";
    
    if(pass1.length < 4)
        return "Password must be at least 4 characters";
}

function Validate_Email(allow_blank)
{
    var email = $F("post_email");

    if(allow_blank && email == '')
        return;
        
    if(email == "")
        return "Please enter an email address";
        
    if(!email.match(/^.+@.+\..{2,4}$/))
        return email + " is not a valid email address.";
}


/**
*
*  Secure Hash Algorithm (SHA1)
*  http://www.webtoolkit.info/
*
**/

function SHA1 (msg) {

	function rotate_left(n,s) {
		var t4 = ( n<<s ) | (n>>>(32-s));
		return t4;
	};

	function lsb_hex(val) {
		var str="";
		var i;
		var vh;
		var vl;

		for( i=0; i<=6; i+=2 ) {
			vh = (val>>>(i*4+4))&0x0f;
			vl = (val>>>(i*4))&0x0f;
			str += vh.toString(16) + vl.toString(16);
		}
		return str;
	};

	function cvt_hex(val) {
		var str="";
		var i;
		var v;

		for( i=7; i>=0; i-- ) {
			v = (val>>>(i*4))&0x0f;
			str += v.toString(16);
		}
		return str;
	};


	function Utf8Encode(string) {
		string = string.replace(/\r\n/g,"\n");
		var utftext = "";

		for (var n = 0; n < string.length; n++) {

			var c = string.charCodeAt(n);

			if (c < 128) {
				utftext += String.fromCharCode(c);
			}
			else if((c > 127) && (c < 2048)) {
				utftext += String.fromCharCode((c >> 6) | 192);
				utftext += String.fromCharCode((c & 63) | 128);
			}
			else {
				utftext += String.fromCharCode((c >> 12) | 224);
				utftext += String.fromCharCode(((c >> 6) & 63) | 128);
				utftext += String.fromCharCode((c & 63) | 128);
			}

		}

		return utftext;
	};

	var blockstart;
	var i, j;
	var W = new Array(80);
	var H0 = 0x67452301;
	var H1 = 0xEFCDAB89;
	var H2 = 0x98BADCFE;
	var H3 = 0x10325476;
	var H4 = 0xC3D2E1F0;
	var A, B, C, D, E;
	var temp;

	msg = Utf8Encode(msg);

	var msg_len = msg.length;

	var word_array = new Array();
	for( i=0; i<msg_len-3; i+=4 ) {
		j = msg.charCodeAt(i)<<24 | msg.charCodeAt(i+1)<<16 |
		msg.charCodeAt(i+2)<<8 | msg.charCodeAt(i+3);
		word_array.push( j );
	}

	switch( msg_len % 4 ) {
		case 0:
			i = 0x080000000;
		break;
		case 1:
			i = msg.charCodeAt(msg_len-1)<<24 | 0x0800000;
		break;

		case 2:
			i = msg.charCodeAt(msg_len-2)<<24 | msg.charCodeAt(msg_len-1)<<16 | 0x08000;
		break;

		case 3:
			i = msg.charCodeAt(msg_len-3)<<24 | msg.charCodeAt(msg_len-2)<<16 | msg.charCodeAt(msg_len-1)<<8	| 0x80;
		break;
	}

	word_array.push( i );

	while( (word_array.length % 16) != 14 ) word_array.push( 0 );

	word_array.push( msg_len>>>29 );
	word_array.push( (msg_len<<3)&0x0ffffffff );


	for ( blockstart=0; blockstart<word_array.length; blockstart+=16 ) {

		for( i=0; i<16; i++ ) W[i] = word_array[blockstart+i];
		for( i=16; i<=79; i++ ) W[i] = rotate_left(W[i-3] ^ W[i-8] ^ W[i-14] ^ W[i-16], 1);

		A = H0;
		B = H1;
		C = H2;
		D = H3;
		E = H4;

		for( i= 0; i<=19; i++ ) {
			temp = (rotate_left(A,5) + ((B&C) | (~B&D)) + E + W[i] + 0x5A827999) & 0x0ffffffff;
			E = D;
			D = C;
			C = rotate_left(B,30);
			B = A;
			A = temp;
		}

		for( i=20; i<=39; i++ ) {
			temp = (rotate_left(A,5) + (B ^ C ^ D) + E + W[i] + 0x6ED9EBA1) & 0x0ffffffff;
			E = D;
			D = C;
			C = rotate_left(B,30);
			B = A;
			A = temp;
		}

		for( i=40; i<=59; i++ ) {
			temp = (rotate_left(A,5) + ((B&C) | (B&D) | (C&D)) + E + W[i] + 0x8F1BBCDC) & 0x0ffffffff;
			E = D;
			D = C;
			C = rotate_left(B,30);
			B = A;
			A = temp;
		}

		for( i=60; i<=79; i++ ) {
			temp = (rotate_left(A,5) + (B ^ C ^ D) + E + W[i] + 0xCA62C1D6) & 0x0ffffffff;
			E = D;
			D = C;
			C = rotate_left(B,30);
			B = A;
			A = temp;
		}

		H0 = (H0 + A) & 0x0ffffffff;
		H1 = (H1 + B) & 0x0ffffffff;
		H2 = (H2 + C) & 0x0ffffffff;
		H3 = (H3 + D) & 0x0ffffffff;
		H4 = (H4 + E) & 0x0ffffffff;

	}

	var temp = cvt_hex(H0) + cvt_hex(H1) + cvt_hex(H2) + cvt_hex(H3) + cvt_hex(H4);

	return temp.toLowerCase();

}