fix mailboxes endpoints' input and output types

Author: NickOvt

lib/api/mailboxes.js

@@ -399,6 +399,7 @@ module.exports = (db, server, mailboxHandler) => {
                                 .required()
                                 .description('Full path of the mailbox, folders are separated by slashes, ends with the mailbox name (unicode string)'),
                             specialUse: Joi.string()
+                                .allow(null)
                                 .required()
                                 .example('\\Draft')
                                 .description('Either special use identifier or null. One of Drafts, Junk, Sent or Trash'),
@@ -409,8 +410,8 @@ module.exports = (db, server, mailboxHandler) => {
                             retention: Joi.number().description(
                                 'Retention policy for this mailbox (in ms). If set then messages added to this mailbox will be automatically deleted after retention time.'
                             ),
-                            total: Joi.number().required().description('How many messages are stored in this mailbox'),
-                            unseen: Joi.number().required().description('How many unseen messages are stored in this mailbox')
+                            total: Joi.number().allow(null).required().description('How many messages are stored in this mailbox'),
+                            unseen: Joi.number().allow(null).required().description('How many unseen messages are stored in this mailbox')
                         }).$_setFlag('objectName', 'GetMailboxResponse')
                     }
                 }

lib/schemas/response/mailboxes-schemas.js

@@ -8,16 +8,16 @@ const GetMailboxesResult = Joi.object({
     id: mailboxId,
     name: Joi.string().required().description('Name for the mailbox (unicode string)'),
     path: Joi.string().required().description('Full path of the mailbox, folders are separated by slashes, ends with the mailbox name (unicode string)'),
-    specialUse: Joi.string().required().description('Either special use identifier or null. One of Drafts, Junk, Sent or Trash'),
+    specialUse: Joi.string().allow(null).required().description('Either special use identifier or null. One of Drafts, Junk, Sent or Trash'),
     modifyIndex: Joi.number().required().description('Modification sequence number. Incremented on every change in the mailbox.'),
     subscribed: booleanSchema.required().description('Mailbox subscription status. IMAP clients may unsubscribe from a folder.'),
     retention: Joi.number().description(
         'Default retention policy for this mailbox (in ms). If set then messages added to this mailbox will be automatically deleted after retention time.'
     ),
     hidden: booleanSchema.required().description('Is the folder hidden or not'),
     encryptMessages: booleanSchema.default(false).required().description('If true then messages in this mailbox are encrypted'),
-    total: Joi.number().description('How many messages are stored in this mailbox'),
-    unseen: Joi.number().description('How many unseen messages are stored in this mailbox'),
+    total: Joi.number().allow(null).description('How many messages are stored in this mailbox'),
+    unseen: Joi.number().allow(null).description('How many unseen messages are stored in this mailbox'),
     size: Joi.number().description('Total size of mailbox in bytes.')
 });