resources/src/mediawiki/mediawiki.user.js

   1 /**
   2  * @class mw.user
   3  * @singleton
   4  */
   5 ( function ( mw, $ ) {
   6         var user,
   7                 deferreds = {},
   8                 // Extend the skeleton mw.user from mediawiki.js
   9                 // This is kind of ugly but we're stuck with this for b/c reasons
  10                 options = mw.user.options || new mw.Map(),
  11                 tokens = mw.user.tokens || new mw.Map();
  12
  13         /**
  14          * Get the current user's groups or rights
  15          *
  16          * @private
  17          * @param {string} info One of 'groups' or 'rights'
  18          * @return {jQuery.Promise}
  19          */
  20         function getUserInfo( info ) {
  21                 var api;
  22                 if ( !deferreds[info] ) {
  23
  24                         deferreds.rights = $.Deferred();
  25                         deferreds.groups = $.Deferred();
  26
  27                         api = new mw.Api();
  28                         api.get( {
  29                                 action: 'query',
  30                                 meta: 'userinfo',
  31                                 uiprop: 'rights|groups'
  32                         } ).always( function ( data ) {
  33                                 var rights, groups;
  34                                 if ( data.query && data.query.userinfo ) {
  35                                         rights = data.query.userinfo.rights;
  36                                         groups = data.query.userinfo.groups;
  37                                 }
  38                                 deferreds.rights.resolve( rights || [] );
  39                                 deferreds.groups.resolve( groups || [] );
  40                         } );
  41
  42                 }
  43
  44                 return deferreds[info].promise();
  45         }
  46
  47         mw.user = user = {
  48                 options: options,
  49                 tokens: tokens,
  50
  51                 /**
  52                  * Generate a random user session ID (32 alpha-numeric characters)
  53                  *
  54                  * This information would potentially be stored in a cookie to identify a user during a
  55                  * session or series of sessions. Its uniqueness should not be depended on.
  56                  *
  57                  * @return {string} Random set of 32 alpha-numeric characters
  58                  */
  59                 generateRandomSessionId: function () {
  60                         var i, r,
  61                                 id = '',
  62                                 seed = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
  63                         for ( i = 0; i < 32; i++ ) {
  64                                 r = Math.floor( Math.random() * seed.length );
  65                                 id += seed.charAt( r );
  66                         }
  67                         return id;
  68                 },
  69
  70                 /**
  71                  * Get the current user's database id
  72                  *
  73                  * Not to be confused with #id.
  74                  *
  75                  * @return {number} Current user's id, or 0 if user is anonymous
  76                  */
  77                 getId: function () {
  78                         return mw.config.get( 'wgUserId', 0 );
  79                 },
  80
  81                 /**
  82                  * Get the current user's name
  83                  *
  84                  * @return {string|null} User name string or null if user is anonymous
  85                  */
  86                 getName: function () {
  87                         return mw.config.get( 'wgUserName' );
  88                 },
  89
  90                 /**
  91                  * Get date user registered, if available
  92                  *
  93                  * @return {Date|boolean|null} Date user registered, or false for anonymous users, or
  94                  *  null when data is not available
  95                  */
  96                 getRegistration: function () {
  97                         var registration = mw.config.get( 'wgUserRegistration' );
  98                         if ( user.isAnon() ) {
  99                                 return false;
 100                         } else if ( registration === null ) {
 101                                 // Information may not be available if they signed up before
 102                                 // MW began storing this.
 103                                 return null;
 104                         } else {
 105                                 return new Date( registration );
 106                         }
 107                 },
 108
 109                 /**
 110                  * Whether the current user is anonymous
 111                  *
 112                  * @return {boolean}
 113                  */
 114                 isAnon: function () {
 115                         return user.getName() === null;
 116                 },
 117
 118                 /**
 119                  * Get an automatically generated random ID (stored in a session cookie)
 120                  *
 121                  * This ID is ephemeral for everyone, staying in their browser only until they close
 122                  * their browser.
 123                  *
 124                  * @return {string} Random session ID
 125                  */
 126                 sessionId: function () {
 127                         var sessionId = $.cookie( 'mediaWiki.user.sessionId' );
 128                         if ( sessionId === undefined || sessionId === null ) {
 129                                 sessionId = user.generateRandomSessionId();
 130                                 $.cookie( 'mediaWiki.user.sessionId', sessionId, { expires: null, path: '/' } );
 131                         }
 132                         return sessionId;
 133                 },
 134
 135                 /**
 136                  * Get the current user's name or the session ID
 137                  *
 138                  * Not to be confused with #getId.
 139                  *
 140                  * @return {string} User name or random session ID
 141                  */
 142                 id: function () {
 143                         return user.getName() || user.sessionId();
 144                 },
 145
 146                 /**
 147                  * Get the user's bucket (place them in one if not done already)
 148                  *
 149                  *     mw.user.bucket( 'test', {
 150                  *         buckets: { ignored: 50, control: 25, test: 25 },
 151                  *         version: 1,
 152                  *         expires: 7
 153                  *     } );
 154                  *
 155                  * @deprecated since 1.23
 156                  * @param {string} key Name of bucket
 157                  * @param {Object} options Bucket configuration options
 158                  * @param {Object} options.buckets List of bucket-name/relative-probability pairs (required,
 159                  *  must have at least one pair)
 160                  * @param {number} [options.version=0] Version of bucket test, changing this forces
 161                  *  rebucketing
 162                  * @param {number} [options.expires=30] Length of time (in days) until the user gets
 163                  *  rebucketed
 164                  * @return {string} Bucket name - the randomly chosen key of the `options.buckets` object
 165                  */
 166                 bucket: function ( key, options ) {
 167                         var cookie, parts, version, bucket,
 168                                 range, k, rand, total;
 169
 170                         options = $.extend( {
 171                                 buckets: {},
 172                                 version: 0,
 173                                 expires: 30
 174                         }, options || {} );
 175
 176                         cookie = $.cookie( 'mediaWiki.user.bucket:' + key );
 177
 178                         // Bucket information is stored as 2 integers, together as version:bucket like: "1:2"
 179                         if ( typeof cookie === 'string' && cookie.length > 2 && cookie.indexOf( ':' ) !== -1 ) {
 180                                 parts = cookie.split( ':' );
 181                                 if ( parts.length > 1 && Number( parts[0] ) === options.version ) {
 182                                         version = Number( parts[0] );
 183                                         bucket = String( parts[1] );
 184                                 }
 185                         }
 186
 187                         if ( bucket === undefined ) {
 188                                 if ( !$.isPlainObject( options.buckets ) ) {
 189                                         throw new Error( 'Invalid bucket. Object expected for options.buckets.' );
 190                                 }
 191
 192                                 version = Number( options.version );
 193
 194                                 // Find range
 195                                 range = 0;
 196                                 for ( k in options.buckets ) {
 197                                         range += options.buckets[k];
 198                                 }
 199
 200                                 // Select random value within range
 201                                 rand = Math.random() * range;
 202
 203                                 // Determine which bucket the value landed in
 204                                 total = 0;
 205                                 for ( k in options.buckets ) {
 206                                         bucket = k;
 207                                         total += options.buckets[k];
 208                                         if ( total >= rand ) {
 209                                                 break;
 210                                         }
 211                                 }
 212
 213                                 $.cookie(
 214                                         'mediaWiki.user.bucket:' + key,
 215                                         version + ':' + bucket,
 216                                         { path: '/', expires: Number( options.expires ) }
 217                                 );
 218                         }
 219
 220                         return bucket;
 221                 },
 222
 223                 /**
 224                  * Get the current user's groups
 225                  *
 226                  * @param {Function} [callback]
 227                  * @return {jQuery.Promise}
 228                  */
 229                 getGroups: function ( callback ) {
 230                         return getUserInfo( 'groups' ).done( callback );
 231                 },
 232
 233                 /**
 234                  * Get the current user's rights
 235                  *
 236                  * @param {Function} [callback]
 237                  * @return {jQuery.Promise}
 238                  */
 239                 getRights: function ( callback ) {
 240                         return getUserInfo( 'rights' ).done( callback );
 241                 }
 242         };
 243
 244 }( mediaWiki, jQuery ) );