From a7d3e652a063e45751baf3f3141b439c1c3e0c11 Mon Sep 17 00:00:00 2001
From: admin <pastornelson@gmail.com>
Date: Sat, 31 Jan 2026 19:02:11 -0800
Subject: [PATCH] bbox function to class

---
 topologytool.py | 36 +++++++++++++++++++++++++++++++++---
 1 file changed, 33 insertions(+), 3 deletions(-)

diff --git a/topologytool.py b/topologytool.py
index 36aaf9c..05772ef 100644
--- a/topologytool.py
+++ b/topologytool.py
@@ -26,13 +26,16 @@ class Topology:
         self.linemap_width = linemap_width
         self.linemap_roundcap = linemap_roundcap
         self.linemap_transparent = linemap_transparent
+        if self.subregion is None:
+            self.subregion = self.country
         if self.country is None and self.iso_country is None:
             self.country = "Switzerland"
         if self.country is None:
-            self.iso_country = pycountry.countries.get(alpha_2=self.iso_country)
+            self.country = pycountry.countries.get(alpha_2=self.iso_country).name
+            self.subregion = self.country
             return
         if self.iso_country is None:
-            self.iso_country =  get_resolver.resolve(self.country)
+            self.iso_country =  get_resolver().resolve(self.country)
             return
 
     def list_subunits(self):
@@ -43,5 +46,32 @@ class Topology:
             for item in countries:
                 print("Subunit of [{}]: [{}]".format(self.country, item.subunit))
 
+    def get_mainland_bbox(self):
+        countries = country_subunits_by_iso_code(self.iso_country)
+        print("bbox--Country is [{}] iso code is [{}]".format(self.country, self.iso_country))
+        # The library is designed to return the main body of the country
+        # in the first result or by filtering for largest area.
+        item = None
+        countries = country_subunits_by_iso_code(self.iso_country)
+        if countries and self.subregion is None:
+            for item in countries:
+                print(self.subregion)
+                if item.subunit == self.subregion:
+                    return item.bbox
+        else:
+            if countries:
+                for item in countries:
+                    if item.subunit == self.subregion:
+                        return item.bbox
+        return None
 
-
+if __name__ == "__main__":
+    topology = Topology(country="France")
+    topology.list_subunits()
+    print(topology.get_mainland_bbox())
+    t2=Topology(country="United Kingdom",subregion="Wales")
+    t2.list_subunits()
+    print(t2.get_mainland_bbox())
+    t3=Topology(iso_country="US")
+    t3.list_subunits()
+    print(t3.get_mainland_bbox())
\ No newline at end of file