[WIP] Adding WDS import, and a new way of handling object images

.gitignore

@@ -145,4 +145,7 @@ astro_data/hip_main.dat
 *.3mf
 *.gcode
 case/my_printer
-
+# sqlite write-ahead log file and the shared memory file used by WAL mode.
+*.db-shm
+*.db-wal
+comets.txt

astro_data/WDS/readme.md

@@ -0,0 +1,3 @@
+Source:
+http://www.astro.gsu.edu/wds/Webtextfiles/wds_precise.txt
+

astro_data/WDS/wds.desc

@@ -0,0 +1,15 @@
+WDS double star catalog
+
+For systems with more than 2 stars:
+
+Top-level info:
+- all distinct discovery numbers are listed.
+- Magnitudes are used of the first pair (assumed to be AB) to indicate the
+achievability of at least the first pair.
+- Positions are taken from the first pair, arcsecond positions are used when available.
+- First/last year of discovery is consolidated as the lowest first and the highest last.
+
+Per pair info:
+- Components
+- Position Angle, Separation, Magnitudes and primary proper motion
+- Notes are copied verbatim

python/PiFinder/cat_images.py

@@ -145,12 +145,24 @@ def get_display_image(catalog_object, source, fov, roll, display_class, burn_in=
 
 def resolve_image_name(catalog_object, source):
     """
-    returns the image path for this objects
+    returns the image path for this object
     """
-    if catalog_object.image_name == "":
-        return ""
-
-    return f"{BASE_IMAGE_PATH}/{str(catalog_object.image_name)[-1]}/{catalog_object.image_name}_{source}.jpg"
+    def create_image_path(image_name):
+        image = f"{BASE_IMAGE_PATH}/{str(image_name)[-1]}/{image_name}_{source}.jpg"
+        return os.path.exists(image), image
+
+    if not catalog_object.image_name:
+        image_name = f"{catalog_object.catalog_code}{catalog_object.sequence}"
+        ok, image = create_image_path(image_name)
+        catalog_object.image_name = image
+        if not ok:
+            for name in catalog_object.names:
+                image_name = f"{''.join(name.split())}"
+                ok, image = create_image_path(image_name)
+                if ok:
+                    catalog_object.image_name = image
+                    break
+    return catalog_object.image_name
 
 
 def create_catalog_image_dirs():