/**
 * Cookie functions.
 *
 * @output wp-includes/js/utils.js
 */

/* global userSettings, getAllUserSettings, wpCookies, setUserSetting */
/* exported getUserSetting, setUserSetting, deleteUserSetting */

window.wpCookies = {
// The following functions are from Cookie.js class in TinyMCE 3, Moxiecode, used under LGPL.

each: function( obj, cb, scope ) {
var n, l;

if ( ! obj ) {
return 0;
}

scope = scope || obj;

if ( typeof( obj.length ) !== 'undefined' ) {
for ( n = 0, l = obj.length; n < l; n++ ) {
if ( cb.call( scope, obj[n], n, obj ) === false ) {
return 0;
}
}
} else {
for ( n in obj ) {
if ( obj.hasOwnProperty(n) ) {
if ( cb.call( scope, obj[n], n, obj ) === false ) {
return 0;
}
}
}
}
return 1;
},

/**
* Get a multi-values cookie.
* Returns a JS object with the name: 'value' pairs.
*/
getHash: function( name ) {
var cookie = this.get( name ), values;

if ( cookie ) {
this.each( cookie.split('&'), function( pair ) {
pair = pair.split('=');
values = values || {};
values[pair[0]] = pair[1];
});
}

return values;
},

/**
* Set a multi-values cookie.
*
* 'values_obj' is the JS object that is stored. It is encoded as URI in wpCookies.set().
*/
setHash: function( name, values_obj, expires, path, domain, secure ) {
var str = '';

this.each( values_obj, function( val, key ) {
str += ( ! str ? '' : '&' ) + key + '=' + val;
});

this.set( name, str, expires, path, domain, secure );
},

/**
* Get a cookie.
*/
get: function( name ) {
var e, b,
cookie = document.cookie,
p = name + '=';

if ( ! cookie ) {
return;
}

b = cookie.indexOf( '; ' + p );

if ( b === -1 ) {
b = cookie.indexOf(p);

if ( b !== 0 ) {
return null;
}
} else {
b += 2;
}

e = cookie.indexOf( ';', b );

if ( e === -1 ) {
e = cookie.length;
}

return decodeURIComponent( cookie.substring( b + p.length, e ) );
},

/**
* Set a cookie.
*
* The 'expires' arg can be either a JS Date() object set to the expiration date (back-compat)
* or the number of seconds until expiration
*/
set: function( name, value, expires, path, domain, secure ) {
var d = new Date();

if ( typeof( expires ) === 'object' && expires.toGMTString ) {
expires = expires.toGMTString();
} else if ( parseInt( expires, 10 ) ) {
d.setTime( d.getTime() + ( parseInt( expires, 10 ) * 1000 ) ); // Time must be in milliseconds.
expires = d.toGMTString();
} else {
expires = '';
}

document.cookie = name + '=' + encodeURIComponent( value ) +
( expires ? '; expires=' + expires : '' ) +
( path    ? '; path=' + path       : '' ) +
( domain  ? '; domain=' + domain   : '' ) +
( secure  ? '; secure'             : '' );
},

/**
* Remove a cookie.
*
* This is done by setting it to an empty value and setting the expiration time in the past.
*/
remove: function( name, path, domain, secure ) {
this.set( name, '', -1000, path, domain, secure );
}
};

// Returns the value as string. Second arg or empty string is returned when value is not set.
window.getUserSetting = function( name, def ) {
var settings = getAllUserSettings();

if ( settings.hasOwnProperty( name ) ) {
return settings[name];
}

if ( typeof def !== 'undefined' ) {
return def;
}

return '';
};

/*
 * Both name and value must be only ASCII letters, numbers or underscore
 * and the shorter, the better (cookies can store maximum 4KB). Not suitable to store text.
 * The value is converted and stored as string.
 */
window.setUserSetting = function( name, value, _del ) {
if ( 'object' !== typeof userSettings ) {
return false;
}

var uid = userSettings.uid,
settings = wpCookies.getHash( 'wp-settings-' + uid ),
path = userSettings.url,
secure = !! userSettings.secure;

name = name.toString().replace( /[^A-Za-z0-9_-]/g, '' );

if ( typeof value === 'number' ) {
value = parseInt( value, 10 );
} else {
value = value.toString().replace( /[^A-Za-z0-9_-]/g, '' );
}

settings = settings || {};

if ( _del ) {
delete settings[name];
} else {
settings[name] = value;
}

wpCookies.setHash( 'wp-settings-' + uid, settings, 31536000, path, '', secure );
wpCookies.set( 'wp-settings-time-' + uid, userSettings.time, 31536000, path, '', secure );

return name;
};

window.deleteUserSetting = function( name ) {
return setUserSetting( name, '', 1 );
};

// Returns all settings as JS object.
window.getAllUserSettings = function() {
if ( 'object' !== typeof userSettings ) {
return {};
}

return wpCookies.getHash( 'wp-settings-' + userSettings.uid ) || {};
};