adding distinct object to redux/preview.js state to track studio membership

src/components/modal/addtostudio/presentation.jsx

@@ -17,19 +17,14 @@ const FlexRow = require('../../flex-row/flex-row.jsx');
 require('../../forms/button.scss');
 require('./modal.scss');
 
-class AddToStudioModalPresentation extends React.Component {
+const AddToStudioModalPresentation = ({
-    constructor (props) {
+    isOpen,
-        super(props);
+    studios,
-        bindAll(this, [
+    waitingToClose,
-            'handleSubmit'
+    onToggleStudio,
-        ]);
+    onRequestClose,
-    }
+    onSubmit
-
+}) => {
-    handleSubmit (formData) {
-        this.props.onSubmit(formData);
-    }
-
-    render () {
     const contentLabel = this.props.intl.formatMessage({id: "addToStudio.title"});
     const checkmark = <img alt="checkmark-icon"
                        className="studio-status-icon-checkmark-img"
@@ -90,7 +85,7 @@ class AddToStudioModalPresentation extends React.Component {
 
                     <Form
                         className="add-to-studio"
-                            onSubmit={this.handleSubmit}
+                        onSubmit={this.props.onSubmit}
                     >
                         <FlexRow className="action-buttons">
                             <Button
@@ -134,7 +129,6 @@ class AddToStudioModalPresentation extends React.Component {
         </Modal>
     );
 }
-}
 
 AddToStudioModalPresentation.propTypes = {
     intl: intlShape,

src/redux/preview.js

@@ -31,7 +31,8 @@ module.exports.getInitialState = () => ({
     original: {},
     parent: {},
     projectStudios: [],
-    curatedStudios: []
+    curatedStudios: [],
+    currentStudioIds: new Set()
 });
 
 module.exports.previewReducer = (state, action) => {
@@ -57,49 +58,23 @@ module.exports.previewReducer = (state, action) => {
             parent: action.info
         });
     case 'SET_PROJECT_STUDIOS':
-        // alter the returned object so that each studio object in the array
+        // also initialize currentStudioIds, to keep track of which studios
-        // includes an additional property indicating that initially, this
+        // the project is currently in.
-        // studio includes the project. This is important because if it is a
-        // studio open to the public, which the user does not curate or own,
-        // and the user removes the project from that studio, we don't want
-        // to forget about the studio completely!
         return Object.assign({}, state, {
-            projectStudios: action.items.map(studio => (
+            projectStudios: action.items,
-                Object.assign({}, studio, {includesProject: true})
+            currentStudioIds: new Set(action.items.map(studio => studio.id))
-            ))
         });
     case 'SET_CURATED_STUDIOS':
+        return Object.assign({}, state, {curatedStudios: action.items});
+    case 'ADD_PROJECT_TO_STUDIO':
+        // add studio id to our studios-that-this-project-belongs-to set.
         return Object.assign({}, state, {
-            curatedStudios: action.items
+            currentStudioIds: new Set(state.currentStudioIds.add(action.studioId))
         });
-    case 'ADD_TO_PROJECT_STUDIOS':
+    case 'REMOVE_PROJECT_FROM_STUDIO':
-        // add studio to our studios-that-this-project-belongs-to list.
+        state.currentStudioIds.delete(action.studioId);
-        // Server response doesn't include full studio object, so just use a
-        // minimal stub object.
         return Object.assign({}, state, {
-            projectStudios: state.projectStudios.some(studio => (
+            currentStudioIds: new Set(state.currentStudioIds)
-                studio.id === action.studioId
-            )) ?
-                state.projectStudios.map(studio => {
-                    if (studio.id === action.studioId) {
-                        studio.includesProject = true;
-                    }
-                    return Object.assign({}, studio);
-                }) : state.projectStudios.concat(
-                    {
-                        id: action.studioId,
-                        includesProject: true
-                    }
-                )
-        });
-    case 'REMOVE_FROM_PROJECT_STUDIOS':
-        return Object.assign({}, state, {
-            projectStudios: state.projectStudios.map(studio => {
-                if (studio.id === action.studioId) {
-                    studio.includesProject = false;
-                }
-                return Object.assign({}, studio);
-            })
         });
     case 'SET_COMMENTS':
         return Object.assign({}, state, {
@@ -174,13 +149,13 @@ module.exports.setCuratedStudios = items => ({
     items: items
 });
 
-module.exports.addToProjectStudios = studioId => ({
+module.exports.addProjectToStudio = studioId => ({
-    type: 'ADD_TO_PROJECT_STUDIOS',
+    type: 'ADD_PROJECT_TO_STUDIO',
     studioId: studioId
 });
 
-module.exports.removeFromProjectStudios = studioId => ({
+module.exports.removeProjectFromStudio = studioId => ({
-    type: 'REMOVE_FROM_PROJECT_STUDIOS',
+    type: 'REMOVE_PROJECT_FROM_STUDIO',
     studioId: studioId
 });
 
@@ -465,7 +440,7 @@ module.exports.addToStudio = (studioId, projectId, token) => (dispatch => {
             return;
         }
         dispatch(module.exports.setStudioFetchStatus(studioId, module.exports.Status.FETCHED));
-        dispatch(module.exports.addToProjectStudios(studioId));
+        dispatch(module.exports.addProjectToStudio(studioId));
     });
 });
 
@@ -485,7 +460,7 @@ module.exports.leaveStudio = (studioId, projectId, token) => (dispatch => {
             return;
         }
         dispatch(module.exports.setStudioFetchStatus(studioId, module.exports.Status.FETCHED));
-        dispatch(module.exports.removeFromProjectStudios(studioId));
+        dispatch(module.exports.removeProjectFromStudio(studioId));
     });
 });
 

src/views/preview/preview.jsx

@@ -395,34 +395,28 @@ Preview.defaultProps = {
 };
 
 // Build consolidated curatedStudios object from all studio info.
-// We add data to curatedStudios so it knows which of the studios the
+// We add flags to indicate whether the project is currently in the studio,
-// project belongs to, and the status of requests to join/leave studios.
+// and the status of requests to join/leave studios.
-function consolidateStudiosInfo (curatedStudios, projectStudios, studioRequests) {
+function consolidateStudiosInfo (curatedStudios, projectStudios,
-    let consolidatedStudios = [];
+    currentStudioIds, studioRequests) {
-    let projectStudiosFoundInCurated = {}; // temp, for time complexity
+    const consolidatedStudios = [];
 
-    // copy curated studios, updating any that are also in other data structures
-    curatedStudios.forEach(curatedStudio => {
-        let studioCopy = Object.assign({}, curatedStudio, {includesProject: false});
-        projectStudios.some(projectStudio => {
-            if (curatedStudio.id === projectStudio.id) {
-                studioCopy.includesProject = projectStudio.includesProject;
-                projectStudiosFoundInCurated[projectStudio.id] = true;
-                return true; // break out of the Array.some loop
-            }
-        });
-        consolidatedStudios.push(studioCopy);
-    });
-    // if there are any other studios this project is in that are NOT in
-    // the list of studios this user curates, like anyone-can-add-their-project
-    // studios, add to front of list
     projectStudios.forEach(projectStudio => {
-        if (!(projectStudio.id in projectStudiosFoundInCurated)) {
+        const includesProject = currentStudioIds.has(projectStudio.id);
-            // no need to specify includesProject = true or false, because
+        const consolidatedStudio =
-            // that state is managed by redux actions.
+            Object.assign({}, projectStudio, {includesProject: includesProject});
-            consolidatedStudios.unshift(Object.assign({}, projectStudio));
+        consolidatedStudios.push(consolidatedStudio);
+    });
+
+    // copy the curated studios that project is not in
+    curatedStudios.forEach(curatedStudio => {
+        if (!currentStudioIds.has(curatedStudio.id)) {
+            const consolidatedStudio =
+                Object.assign({}, curatedStudio, {includesProject: false});
+            consolidatedStudios.push(consolidatedStudio);
         }
     });
+
     // set studio state to hasRequestOutstanding==true if it's being fetched,
     // false if it's not
     consolidatedStudios.forEach(consolidatedStudio => {
@@ -445,7 +439,8 @@ const mapStateToProps = state => ({
     sessionStatus: state.session.status,
     projectStudios: state.preview.projectStudios,
     studios: consolidateStudiosInfo(state.preview.curatedStudios,
-        state.preview.projectStudios, state.preview.status.studioRequests),
+        state.preview.projectStudios, state.preview.currentStudioIds,
+        state.preview.status.studioRequests),
     user: state.session.session.user,
     playerMode: state.scratchGui.mode.isPlayerOnly,
     fullScreen: state.scratchGui.mode.isFullScreen