Use file_paths util function instead of creating them again, define p…

…review_image handler

felicette/sat_downloader.py

@@ -4,7 +4,7 @@
 
 from felicette.utils.geo_utils import get_tiny_bbox
 from felicette.constants import band_tag_map
-from felicette.utils.file_manager import save_to_file, data_file_exists, check_sat_path
+from felicette.utils.file_manager import save_to_file, data_file_exists, file_paths_wrt_id
 
 
 def search_landsat_data(coordinates, cloud_cover_lt):
@@ -26,21 +26,36 @@ def search_landsat_data(coordinates, cloud_cover_lt):
  landsat_item = search_items[0]
  return landsat_item
 
+def preview_landsat_image(landsat_item):
+ paths = file_paths_wrt_id(landsat_item._data["id"])
+ # download image and save it in directory
+ if not data_file_exists(paths["preview"]):
+ save_to_file(
+ landsat_item.assets["thumbnail"]["href"],
+ paths["preview"],
+ landsat_item._data["id"],
+ "✗ preview data doesn't exist, downloading image"
+ )
+ else:
+ rprint(
+ "[green] ✓ ",
+ "required data exists for preview image"
+ )
+ # prompt a confirm option
 
-def download_landsat_data(
- landsat_item, bands=[2, 3, 4, 8]
-):
- # check if directory exists to save the data for this product id
- check_sat_path(landsat_item._data["id"])
+def download_landsat_data(landsat_item, bands=[2, 3, 4, 8]):
 
+ # get paths w.r.t. id
+ paths = file_paths_wrt_id(landsat_item._data["id"])
  # save bands generically
  for band in bands:
- band_filename = landsat_item._data["id"] + "-b{}.tiff".format(band)
- if not data_file_exists(band_filename, landsat_item._data["id"]):
+ band_filename = paths["b%s" % band]
+ if not data_file_exists(band_filename):
  save_to_file(
  landsat_item.assets["B{}".format(band)]["href"],
  band_filename,
  landsat_item._data["id"],
+ "✗ required data doesn't exist, downloading", band_tag_map[band], "band"
  )
  else:
  rprint(