Fixing metadata issues

Packages/ohif-study-list/client/lib/retrieveStudyMetadata.js

@@ -0,0 +1,85 @@
+import { Meteor } from 'meteor/meteor';
+import { OHIF } from 'meteor/ohif:core';
+import 'meteor/ohif:viewerbase';
+
+// Define the StudyMetaDataPromises object. This is used as a cache to store study meta data
+// promises and prevent unnecessary subsequent calls to the server
+const StudyMetaDataPromises = new Map();
+
+/**
+ * Retrieves study metadata using a server call
+ *
+ * @param {String} studyInstanceUid The UID of the Study to be retrieved
+ * @returns {Promise} that will be resolved with the metadata or rejected with the error
+ */
+OHIF.studylist.retrieveStudyMetadata = studyInstanceUid => {
+    // If the StudyMetaDataPromises cache already has a pending or resolved promise related to the
+    // given studyInstanceUid, then that promise is returned
+    if (StudyMetaDataPromises.has(studyInstanceUid)) {
+        return StudyMetaDataPromises.get(studyInstanceUid);
+    }
+
+    console.time('retrieveStudyMetadata');
+
+    // Create a promise to handle the data retrieval
+    const promise = new Promise((resolve, reject) => {
+        // If no study metadata is in the cache variable, we need to retrieve it from
+        // the server with a call.
+        Meteor.call('GetStudyMetadata', studyInstanceUid, function(error, study) {
+            console.timeEnd('retrieveStudyMetadata');
+
+            if (Meteor.user && Meteor.user()) {
+                HipaaLogger.logEvent({
+                    eventType: 'viewed',
+                    userId: Meteor.userId(),
+                    userName: Meteor.user().profile.fullName,
+                    collectionName: 'Study',
+                    recordId: studyInstanceUid,
+                    patientId: study.patientId,
+                    patientName: study.patientName
+                });
+            }
+
+            if (error) {
+                OHIF.log.warn(error);
+                reject(error);
+                return;
+            }
+
+            if (!study) {
+                throw new Meteor.Error('GetStudyMetadata', 'No study data returned from server');
+            }
+
+            // Once the data was retrieved, the series are sorted by series and instance number
+            OHIF.viewerbase.sortStudy(study);
+
+            // Add additional metadata to our study from the studylist
+            const studylistStudy = StudyListStudies.findOne({
+                studyInstanceUid: study.studyInstanceUid
+            });
+
+            if (!studylistStudy) {
+                // return;
+            } else {
+                Object.assign(study, studylistStudy);
+            }
+
+            // Transform the study in a StudyMetadata object
+            const studyMetadata = new OHIF.metadata.StudyMetadata(study);
+
+            // Add the display sets to the study
+            study.displaySets = OHIF.viewerbase.sortingManager.getDisplaySets(studyMetadata);
+            study.displaySets.forEach(displaySet => {
+                OHIF.viewerbase.stackManager.makeAndAddStack(study, displaySet);
+            });
+
+            // Resolve the promise with the final study metadata object
+            resolve(study);
+        });
+    });
+
+    // Store the promise in cache
+    StudyMetaDataPromises.set(studyInstanceUid, promise);
+
+    return promise;
+};