Handle deleted invitation error

www/common/invitation.js

@@ -1,5 +1,5 @@
 (function () {
-var factory = function (Hash, Crypt, Nacl, Scrypt/*, Util, Cred, nThen */) {
+var factory = function (Hash, Util, Crypt, Nacl, Scrypt/*, Cred, nThen */) {
     var Invite = {};
 
     Invite.deriveSeeds = function (safeSeed) {
@@ -44,8 +44,9 @@ var factory = function (Hash, Crypt, Nacl, Scrypt/*, Util, Cred, nThen */) {
             'base64'); // format, could be 'base64'
     };
 
-    Invite.getPreviewContent = function (seeds, cryptgetOpts, cb) {
-        setTimeout(function () {
+    Invite.getPreviewContent = function (seeds, cryptgetOpts, _cb) {
+        var cb = Util.once(Util.mkAsync(_cb));
+        // XXX test data
         cb(void 0, {
             author: {
                 displayName: 'Bob',
@@ -54,7 +55,6 @@ var factory = function (Hash, Crypt, Nacl, Scrypt/*, Util, Cred, nThen */) {
             team: 'CryptPad',
             message: 'Hello bob'
         });
-        });
         /*
         var secrets = Invite.derivePreviewSecrets(seeds);
         secrets = secrets;
@@ -62,6 +62,7 @@ var factory = function (Hash, Crypt, Nacl, Scrypt/*, Util, Cred, nThen */) {
         var hash = Invite.derivePreviewHash(seeds);
         Crypt.get(hash, function (err, val) {
             if (err) { return void cb(err); }
+            if (!val) { return void cb('DELETED'); }
             try {
                 cb(void 0, JSON.parse(val));
             } catch (e) {
@@ -86,6 +87,7 @@ var factory = function (Hash, Crypt, Nacl, Scrypt/*, Util, Cred, nThen */) {
     if (typeof(module) !== 'undefined' && module.exports) {
         module.exports = factory(
             require("../common-hash"),
+            require("../common-util"),
             require("../cryptget"), // XXX npm cryptget?
             require("tweetnacl/nacl-fast"),
             require("scrypt-async")
@@ -93,11 +95,12 @@ var factory = function (Hash, Crypt, Nacl, Scrypt/*, Util, Cred, nThen */) {
     } else if ((typeof(define) !== 'undefined' && define !== null) && (define.amd !== null)) {
         define([
             '/common/common-hash.js',
+            '/common/common-util.js',
             '/common/cryptget.js',
             '/bower_components/tweetnacl/nacl-fast.min.js',
             '/bower_components/scrypt-async/scrypt-async.min.js',
-        ], function (Hash, Crypt /*, Nacl, Scrypt */) {
-            return factory(Hash, Crypt, window.nacl, window.scrypt);
+        ], function (Hash, Util, Crypt /*, Nacl, Scrypt */) {
+            return factory(Hash, Util, Crypt, window.nacl, window.scrypt);
         });
     }
 }());

www/teams/inner.js

@@ -1054,8 +1054,10 @@ define([
             h('i.fa.fa-spin.fa-spinner')
         ]);
         var $div = $(div);
+        var errorBlock;
         cb([
             h('h2', 'Team invitation'), // XXX
+            errorBlock = h('div.alert.alert-danger', {style: 'display: none;'}),
             div
         ]);
         var inviteDiv = h('div');
@@ -1100,6 +1102,11 @@ define([
                 origin: privateData.origin
             }, waitFor(function (err, json) {
                 if (err) {
+                    // err === DELETED: different message?
+                    $(errorBlock).text('ERROR'+err).show(); // XXX
+                    waitFor.abort();
+                    $div.empty();
+                    return;
                     // XXX handle errors
                 }
                 json = json; // XXX {message: "", author: "", ???}