Update app.py

app.py

@@ -10,6 +10,22 @@ from langchain.graphs import Neo4jGraph
 from langchain.chains import GraphCypherQAChain
 from langchain.memory import ConversationBufferMemory
 
+# process of getting credentials
+def get_credentials():
+    creds_json_str = os.getenv("BOB") # get json credentials stored as a string
+    if creds_json_str is None:
+        raise ValueError("GOOGLE_APPLICATION_CREDENTIALS_JSON not found in environment")
+
+    # create a temporary file
+    with tempfile.NamedTemporaryFile(mode="w+", delete=False, suffix=".json") as temp:
+        temp.write(creds_json_str) # write in json format
+        temp_filename = temp.name 
+
+    return temp_filename
+    
+# pass
+os.environ["GOOGLE_APPLICATION_CREDENTIALS"]= get_credentials()
+
 NEO4J_URI = os.getenv("NEO4J_URI")
 NEO4J_USERNAME = os.getenv("NEO4J_USERNAME")
 NEO4J_PASSWORD = os.getenv("NEO4J_PASSWORD")