Enhance validation for DICOM viewer input data

- Added validation checks for nested stacks and stack objects to ensure imageIds are valid arrays of strings.
- Implemented console warnings for invalid entries, including nested stacks and stack objects, to aid in debugging.
- Improved error handling for unknown or invalid entries in the parsed data.

dicom-viewer/src/main.tsx

@@ -52,15 +52,22 @@ export function mountDicomViewers() {
 
       if (Array.isArray(parsed)) {
         const out: any[] = [];
-        parsed.forEach(item => {
+        parsed.forEach((item, itemIdx) => {
           // Case object with nested stacks: { caseId, stacks: [ { name, imageIds } ] }
-          if (item && typeof item === 'object' && Array.isArray(item.stacks)) {
+          if (item && typeof item === "object" && Array.isArray(item.stacks)) {
             const caseId = item.caseId || item.caseUID || item.case || undefined;
-            item.stacks.forEach((s: any) => {
+            item.stacks.forEach((s: any, sIdx: number) => {
               let imageIds: string[] = [];
               if (Array.isArray(s)) imageIds = s;
               else if (Array.isArray(s.imageIds)) imageIds = s.imageIds;
               else if (Array.isArray(s.i)) imageIds = s.i;
+
+              // Validation
+              if (!Array.isArray(imageIds) || imageIds.length === 0 || !imageIds.every(x => typeof x === "string")) {
+                console.warn(`data-named-stacks: skipping invalid nested stack at parsed[${itemIdx}].stacks[${sIdx}]`, s);
+                return;
+              }
+
               out.push({
                 imageIds: toWadouri(imageIds),
                 name: s.name || s.label || undefined,
@@ -73,6 +80,12 @@ export function mountDicomViewers() {
           // Stack object: { imageIds, i, name, caseId }
           if (item && typeof item === 'object' && (Array.isArray(item.imageIds) || Array.isArray(item.i))) {
             const imageIds = Array.isArray(item.imageIds) ? item.imageIds : item.i;
+
+            if (!Array.isArray(imageIds) || imageIds.length === 0 || !imageIds.every(x => typeof x === "string")) {
+              console.warn(`data-named-stacks: skipping invalid stack object at parsed[${itemIdx}]`, item);
+              return;
+            }
+
             out.push({
               imageIds: toWadouri(imageIds),
               name: item.name || item.label || undefined,
@@ -86,6 +99,9 @@ export function mountDicomViewers() {
             out.push(toDescriptor(item));
             return;
           }
+
+          // Unknown / invalid entry
+          console.warn(`data-named-stacks: unknown or invalid entry at parsed[${itemIdx}] — skipping`, item);
         });
         return out;
       }