Make auth usage less error-ful and bump version

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "askem-beaker"
-version = "1.0.0"
+version = "1.0.1"
 description = ""
 readme = "README.md"
 requires-python = ">=3.10"
@@ -22,7 +22,7 @@ classifiers = [
   "Programming Language :: Python :: Implementation :: PyPy",
 ]
 dependencies = [
-  "beaker-kernel>=1.2.0",
+  "beaker-kernel>=1.2.7",
   "pandas==1.3.3",
   "matplotlib~=3.7.1",
   "xarray==0.19.0",

src/askem_beaker/utils.py

@@ -8,20 +8,21 @@ class TerariumAuth:
     password: str
 
     def __init__(self) -> None:
-        username = os.environ.get("AUTH_USERNAME", None)
-        password = os.environ.get("AUTH_PASSWORD", None)
-        if username and password:
-            self.username = username
-            self.password = password
-        else:
-            raise ValueError("Authentication details not provided")
+        self.username = os.environ.get("AUTH_USERNAME", None)
+        self.password = os.environ.get("AUTH_PASSWORD", None)
 
     def auth_header(self) -> dict[str, str]:
-        token = b64encode(f"{self.username}:{self.password}".encode('utf-8')).decode("ascii")
-        return {"Authorization": f"Basic {token}"}
+        if self.username and self.password:
+            token = b64encode(f"{self.username}:{self.password}".encode('utf-8')).decode("ascii")
+            return {"Authorization": f"Basic {token}"}
+        else:
+            return None
 
     def requests_auth(self) -> HTTPBasicAuth:
-        return HTTPBasicAuth(self.username, self.password)
+        if self.username and self.password:
+            return HTTPBasicAuth(self.username, self.password)
+        else:
+            return None
 
 
 def get_auth() -> TerariumAuth|None: