/**
 * @output wp-admin/js/password-strength-meter.js
 */

/* global zxcvbn */
window.wp = window.wp || {};

(function($){
var __ = wp.i18n.__,
sprintf = wp.i18n.sprintf;

/**
* Contains functions to determine the password strength.
*
* @since 3.7.0
*
* @namespace
*/
wp.passwordStrength = {
/**
* Determines the strength of a given password.
*
* Compares first password to the password confirmation.
*
* @since 3.7.0
*
* @param {string} password1       The subject password.
* @param {Array}  disallowedList An array of words that will lower the entropy of
*                                 the password.
* @param {string} password2       The password confirmation.
*
* @return {number} The password strength score.
*/
meter : function( password1, disallowedList, password2 ) {
if ( ! Array.isArray( disallowedList ) )
disallowedList = [ disallowedList.toString() ];

if (password1 != password2 && password2 && password2.length > 0)
return 5;

if ( 'undefined' === typeof window.zxcvbn ) {
// Password strength unknown.
return -1;
}

var result = zxcvbn( password1, disallowedList );
return result.score;
},

/**
* Builds an array of words that should be penalized.
*
* Certain words need to be penalized because it would lower the entropy of a
* password if they were used. The disallowedList is based on user input fields such
* as username, first name, email etc.
*
* @since 3.7.0
* @deprecated 5.5.0 Use {@see 'userInputDisallowedList()'} instead.
*
* @return {string[]} The array of words to be disallowed.
*/
userInputBlacklist : function() {
window.console.log(
sprintf(
/* translators: 1: Deprecated function name, 2: Version number, 3: Alternative function name. */
__( '%1$s is deprecated since version %2$s! Use %3$s instead. Please consider writing more inclusive code.' ),
'wp.passwordStrength.userInputBlacklist()',
'5.5.0',
'wp.passwordStrength.userInputDisallowedList()'
)
);

return wp.passwordStrength.userInputDisallowedList();
},

/**
* Builds an array of words that should be penalized.
*
* Certain words need to be penalized because it would lower the entropy of a
* password if they were used. The disallowed list is based on user input fields such
* as username, first name, email etc.
*
* @since 5.5.0
*
* @return {string[]} The array of words to be disallowed.
*/
userInputDisallowedList : function() {
var i, userInputFieldsLength, rawValuesLength, currentField,
rawValues       = [],
disallowedList  = [],
userInputFields = [ 'user_login', 'first_name', 'last_name', 'nickname', 'display_name', 'email', 'url', 'description', 'weblog_title', 'admin_email' ];

// Collect all the strings we want to disallow.
rawValues.push( document.title );
rawValues.push( document.URL );

userInputFieldsLength = userInputFields.length;
for ( i = 0; i < userInputFieldsLength; i++ ) {
currentField = $( '#' + userInputFields[ i ] );

if ( 0 === currentField.length ) {
continue;
}

rawValues.push( currentField[0].defaultValue );
rawValues.push( currentField.val() );
}

/*
* Strip out non-alphanumeric characters and convert each word to an
* individual entry.
*/
rawValuesLength = rawValues.length;
for ( i = 0; i < rawValuesLength; i++ ) {
if ( rawValues[ i ] ) {
disallowedList = disallowedList.concat( rawValues[ i ].replace( /\W/g, ' ' ).split( ' ' ) );
}
}

/*
* Remove empty values, short words and duplicates. Short words are likely to
* cause many false positives.
*/
disallowedList = $.grep( disallowedList, function( value, key ) {
if ( '' === value || 4 > value.length ) {
return false;
}

return $.inArray( value, disallowedList ) === key;
});

return disallowedList;
}
};

// Backward compatibility.

/**
* Password strength meter function.
*
* @since 2.5.0
* @deprecated 3.7.0 Use wp.passwordStrength.meter instead.
*
* @global
*
* @type {wp.passwordStrength.meter}
*/
window.passwordStrength = wp.passwordStrength.meter;
})(jQuery);