fix: Add method to increment delete status for hierarchical image

deletion

# Problems
- Series and instances under study are not delete
- Instances under series are not deleted

# Solutions
- Add methods to increment delete status for series and study models to
facilitate hierarchical image deletion. This ensures proper update of
delete status across related entities.

models/mongodb/models/series.model.js

@@ -13,6 +13,17 @@ let dicomSeriesSchemaOptions = _.merge(
     DicomSchemaOptionsFactory.get("series", SeriesDocDicomJsonHandler),
     {
         methods: {
+            incrementDeleteStatus: async function () {
+                await mongoose.model("dicom").updateMany({
+                    seriesUID: this.seriesUID
+                }, {
+                    $inc: {
+                        deleteStatus: 1
+                    }
+                });
+                this.deleteStatus += 1;
+                await this.save();
+            },
             deleteDicomInstances: async function () {
                 let seriesPath = this.seriesPath;
                 logger.warn("Permanently delete series folder: " + seriesPath);

models/mongodb/models/study.model.js

@@ -13,6 +13,26 @@ let dicomStudySchemaOptions = _.merge(
     DicomSchemaOptionsFactory.get("study", StudyDocDicomJsonHandler),
     {
         methods: {
+            incrementDeleteStatus: async function() {
+                await Promise.all([
+                    mongoose.model("dicomSeries").updateMany({
+                        studyUID: this.studyUID
+                    }, {
+                        $inc : {
+                            deleteStatus: 1
+                        }
+                    }),
+                    mongoose.model("dicom").updateMany({
+                        studyUID: this.studyUID
+                    }, {
+                        $inc: {
+                            deleteStatus: 1
+                        }
+                    })
+                ]);
+                this.deleteStatus += 1;
+                await this.save();
+            },
             deleteDicomInstances: async function () {
 
                 let studyPath = this.studyPath;