Fixes and improvements for dynamic zone asset loading

src/utilities/http.ts

@@ -52,42 +52,45 @@ async function addHttpRoutes(app: Application) {
   })
 
   app.get('/assets/:zoneId', async (req: Request, res: Response) => {
-    const zoneId = req.params.zoneId
-    if(zoneId && parseInt(zoneId)) {
-      const zone = await zoneRepository.getById(parseInt(zoneId))
-      if(zone) {
-        const assets = await zoneManager.getNeededAssets(zone);
-        const sprites = await spriteRepository.getAll()
-        const spritesArray: TAsset[] = [];
-        sprites.forEach((sprite) => {
-          sprite.spriteActions.forEach((spriteAction) => {
-            spritesArray.push({
-              key: sprite.id + '-' + spriteAction.action,
-              url: '/assets/sprites/' + sprite.id + '/' + spriteAction.action + '.png',
-              group: spriteAction.isAnimated ? 'sprite_animations' : 'sprites',
-              frameWidth: spriteAction.frameWidth,
-              frameHeight: spriteAction.frameHeight
-            })
-          })
-        })
+    const zoneId = parseInt(req.params.zoneId);
 
-        res.json([
-          ...spritesArray,
-          ...assets.tiles.map(x => { return {
-            key: x,
-            url: '/assets/tiles/' + x + '.png',
-            group: 'tiles'
-          }}),
-          ...assets.objects.map(x => { return {
-            key: x,
-            url: '/assets/objects/' + x + '.png',
-            group: 'objects'
-          }})
-        ]);
-        // res.json( );
-      }
+    if (isNaN(zoneId) || zoneId === 0) {
+      return res.status(400).json({ message: 'Invalid zone ID' });
     }
-  })
+
+    const zone = await zoneRepository.getById(zoneId);
+
+    if (!zone) {
+      return res.status(404).json({ message: 'Zone not found' });
+    }
+
+    const assets = await zoneManager.getZoneAssets(zone);
+    const sprites = await spriteRepository.getAll();
+
+    const spritesAssets = sprites.flatMap(sprite =>
+      sprite.spriteActions.map(action => ({
+        key: `${sprite.id}-${action.action}`,
+        url: `/assets/sprites/${sprite.id}/${action.action}.png`,
+        group: action.isAnimated ? 'sprite_animations' : 'sprites',
+        frameWidth: action.frameWidth,
+        frameHeight: action.frameHeight
+      }))
+    );
+
+    const tilesAssets = assets.tiles.map(tile => ({
+      key: tile,
+      url: `/assets/tiles/${tile}.png`,
+      group: 'tiles'
+    }));
+
+    const objectsAssets = assets.objects.map(object => ({
+      key: object,
+      url: `/assets/objects/${object}.png`,
+      group: 'objects'
+    }));
+
+    res.json([...spritesAssets, ...tilesAssets, ...objectsAssets]);
+  });
 
   app.get('/assets/:type/:spriteId?/:file', (req: Request, res: Response) => {
     const assetType = req.params.type