Support for policy upload/download

Plus a small bugfix for groups

app/views/main.py

@@ -8,7 +8,7 @@ from app import auth
 
 # from ..lib import username
 
-from flask import jsonify
+from flask import jsonify, make_response
 from flask_pyoidc.user_session import UserSession
 
 from hsapi_client import Node, User, Route, PreAuthKey, Policy
@@ -132,9 +132,24 @@ def routes():
                            routes=final)
 
 
-@main_blueprint.route('/policy', methods=['GET'])
+@main_blueprint.route('/policy', defaults={'action': None}, methods=['GET'])
+@main_blueprint.route('/policy/<action>', methods=['GET'])
 @auth.authorize_admins('default')
-def policy():
+def policy(action):
+    log.debug(f"action: {action}")
     policy = Policy().get()
-    return render_template("policy.html",
-                           policy=policy)
+    if action == "view":
+        return policy.json
+
+    elif action == "download":
+        updateStr = policy.updatedAt.strftime(format='%Y%m%d-%H%M')
+        log.debug(updateStr)
+        filename = f"acl-{updateStr}.json"
+        response = make_response(policy.json)
+        response.headers['Content-Disposition'] = f'attachment; filename={
+            filename}'
+
+        return response
+    else:
+        return render_template("policy.html",
+                               policy=policy)