Set up state, tracking the number of managers the limits used to display info...

Set up state, tracking the number of managers the limits used to display info to the user. Handle new error response when trying to promote a curator.

src/redux/studio.js

@@ -12,6 +12,9 @@ const Status = keyMirror({
     ERROR: null
 });
 
+const STUDIO_MANAGER_LIMIT = 40;
+const STUDIO_MANAGER_THRESHOLD = 30;
+
 const getInitialState = () => ({
     infoStatus: Status.FETCHING,
     title: '',
@@ -20,6 +23,7 @@ const getInitialState = () => ({
     commentsAllowed: false,
     image: '',
     followers: 0,
+    managers: 0,
     owner: null,
 
     // BEWARE: classroomId is only loaded if the user is an educator
@@ -98,6 +102,9 @@ const selectStudioLastUpdated = state => state.studio.updated;
 const selectStudioLoadFailed = state => state.studio.infoStatus === Status.ERROR;
 const selectStudioCommentCount = state => state.studio.commentCount;
 const selectStudioFollowerCount = state => state.studio.followers;
+const selectStudioManagerCount = state => state.studio.managers;
+const selectStudioHasReachedManagerThreshold = state => state.studio.managers >= STUDIO_MANAGER_THRESHOLD;
+const selectStudioHasReachedManagerLimit = state => state.studio.managers >= STUDIO_MANAGER_LIMIT;
 const selectStudioProjectCount = state => state.studio.projectCount;
 const selectIsFetchingInfo = state => state.studio.infoStatus === Status.FETCHING;
 const selectIsFollowing = state => state.studio.following;
@@ -121,6 +128,7 @@ const getInfo = () => ((dispatch, getState) => {
             updated: new Date(body.history.modified),
             commentCount: body.stats.comments,
             followers: body.stats.followers,
+            managers: body.stats.managers,
             projectCount: body.stats.projects,
             owner: body.owner
         }));
@@ -169,6 +177,10 @@ module.exports = {
     setInfo,
     setRoles,
 
+    // Constants
+    STUDIO_MANAGER_LIMIT,
+    STUDIO_MANAGER_THRESHOLD,
+
     // Selectors
     selectStudioId,
     selectStudioTitle,
@@ -180,6 +192,9 @@ module.exports = {
     selectStudioLoadFailed,
     selectStudioCommentCount,
     selectStudioFollowerCount,
+    selectStudioManagerCount,
+    selectStudioHasReachedManagerThreshold,
+    selectStudioHasReachedManagerLimit,
     selectStudioProjectCount,
     selectIsFetchingInfo,
     selectIsFetchingRoles,

src/views/studio/lib/studio-member-actions.js

@@ -11,11 +11,15 @@ const Errors = keyMirror({
     PERMISSION: null,
     DUPLICATE: null,
     UNKNOWN_USERNAME: null,
-    RATE_LIMIT: null
+    RATE_LIMIT: null,
+    MANAGER_LIMIT: null
 });
 
 const normalizeError = (err, body, res) => {
     if (err) return Errors.NETWORK;
+    if (res.statusCode === 400 && body.message === 'too many owners') {
+        return Errors.MANAGER_LIMIT;
+    }
     if (res.statusCode === 401 || res.statusCode === 403) return Errors.PERMISSION;
     if (res.statusCode === 404) return Errors.UNKNOWN_USERNAME;
     if (res.statusCode === 429) return Errors.RATE_LIMIT;