FIX: Better SNAP geo_region name to disambiguate between products

Author: remi-braun

CHANGES.md

@@ -2,6 +2,7 @@
 
 ## 0.24.1 (2026-mm-dd)
 
+- FIX: Better SNAP geo_region name to disambiguate between products
 - FIX: Fix subsetting complex SAR data with a window (cannot be done directly in the ESA SNAP Read Operator)
 - FIX: Fix `KeyError` when loading a Landsat Collection-2 band from a STAC item whose asset name differs from the STAC common name (e.g. `nir08` instead of `nir`) [#307](https://github.com/sertit/eoreader/issues/307)
 

eoreader/products/sar/sar_product.py

@@ -951,11 +951,18 @@ def _get_subset(self, tmp_dir, **kwargs) -> (str, str):
             try:
                 # geo_region = window
                 # Take a buffer to prevent border effects from terrain correction
-                geo_region = os.path.join(self.output, "geo_region.shp")
-                geo_region_gdf = geometry.buffer(
-                    geo_region_gdf.to_crs(self.crs()), 1000, resolution=2
+                win_suffix = utils.get_window_suffix(window)
+                if win_suffix:
+                    win_suffix = f"_{win_suffix}"
+
+                geo_region, exists = self._get_out_path(
+                    f"{self.condensed_name}{win_suffix}_snap_geo_region.shp"
                 )
-                geo_region_gdf.to_crs(WGS84).to_file(geo_region)
+                if not exists:
+                    geo_region_gdf = geometry.buffer(
+                        geo_region_gdf.to_crs(self.crs()), 1000, resolution=2
+                    )
+                    vectors.write(geo_region_gdf.to_crs(WGS84), path=geo_region)
             except Exception as exc:
                 raise NotImplementedError(
                     "Window should either be a GeoDataFrame, readable as a vector or set to None. Bounds, tuple, list and 'rasterio.Window' are not supported."