register: Add can_create_web_public_streams to register response.

templates/zerver/api/changelog.md

@@ -16,6 +16,8 @@ below features are supported.
 * [`POST /register`](/api/register-queue): Added `create_web_public_stream_policy`
   policy for which users can create web public streams.
 * [`PATCH /realm`]: Added support for updating `create_web_public_stream_policy`.
+* [`POST /register`](/api/register-queue): Added `can_create_web_public_streams` boolean
+  field to the response.
 
 **Feature level 102**
 

version.py

@@ -33,7 +33,7 @@ DESKTOP_WARNING_VERSION = "5.4.3"
 # Changes should be accompanied by documentation explaining what the
 # new level means in templates/zerver/api/changelog.md, as well as
 # "**Changes**" entries in the endpoint's documentation in `zulip.yaml`.
-API_FEATURE_LEVEL = 102
+API_FEATURE_LEVEL = 103
 
 # Bump the minor PROVISION_VERSION to indicate that folks should provision
 # only when going from an old version of the code to a newer version. Bump

zerver/lib/events.py

@@ -417,8 +417,11 @@ def fetch_initial_state_data(
         # 102); we can remove this once we no longer need to support
         # legacy mobile app versions that read the old property.
         state["can_create_streams"] = (
-            settings_user.can_create_private_streams() or settings_user.can_create_public_streams()
+            settings_user.can_create_private_streams()
+            or settings_user.can_create_public_streams()
+            or settings_user.can_create_web_public_streams()
         )
+        state["can_create_web_public_streams"] = settings_user.can_create_web_public_streams()
         state["can_subscribe_other_users"] = settings_user.can_subscribe_other_users()
         state["can_invite_others_to_realm"] = settings_user.can_invite_others_to_realm()
         state["is_admin"] = settings_user.is_realm_admin
@@ -752,8 +755,13 @@ def apply_event(
                     # Recompute properties based on is_admin/is_guest
                     state["can_create_private_streams"] = user_profile.can_create_private_streams()
                     state["can_create_public_streams"] = user_profile.can_create_public_streams()
+                    state[
+                        "can_create_web_public_streams"
+                    ] = user_profile.can_create_web_public_streams()
                     state["can_create_streams"] = (
-                        state["can_create_private_streams"] or state["can_create_public_streams"]
+                        state["can_create_private_streams"]
+                        or state["can_create_public_streams"]
+                        or state["can_create_web_public_streams"]
                     )
                     state["can_subscribe_other_users"] = user_profile.can_subscribe_other_users()
                     state["can_invite_others_to_realm"] = user_profile.can_invite_others_to_realm()
@@ -942,6 +950,7 @@ def apply_event(
             policy_permission_dict = {
                 "create_public_stream_policy": "can_create_public_streams",
                 "create_private_stream_policy": "can_create_private_streams",
+                "create_web_public_stream_policy": "can_create_web_public_streams",
                 "invite_to_stream_policy": "can_subscribe_other_users",
                 "invite_to_realm_policy": "can_invite_others_to_realm",
             }
@@ -962,7 +971,9 @@ def apply_event(
 
             # Finally, we need to recompute this value from its inputs.
             state["can_create_streams"] = (
-                state["can_create_private_streams"] or state["can_create_public_streams"]
+                state["can_create_private_streams"]
+                or state["can_create_public_streams"]
+                or state["can_create_web_public_streams"]
             )
         elif event["op"] == "update_dict":
             for key, value in event["data"].items():

zerver/openapi/zulip.yaml

@@ -11462,6 +11462,18 @@ paths:
                           **Changes**: New in Zulip 5.0 (feature level 102). In older
                           versions, the deprecated `can_create_streams` property should be
                           used to determine whether the user can create private streams.
+                      can_create_web_public_streams:
+                        type: boolean
+                        description: |
+                          Present if `realm_user` is present in `fetch_event_types`.
+
+                          Whether the current user is allowed to create public streams with
+                          the organization's [stream creation policy](/help/configure-who-can-create-streams).
+
+                          Note that this will be false if the Zulip server does not have the
+                          `WEB_PUBLIC_STREAMS_ENABLED` setting enabled.
+
+                          **Changes**: New in Zulip 5.0 (feature level 103).
                       can_subscribe_other_users:
                         type: boolean
                         description: |

zerver/tests/test_home.py

@@ -53,6 +53,7 @@ class HomeTest(ZulipTestCase):
         "can_create_private_streams",
         "can_create_public_streams",
         "can_create_streams",
+        "can_create_web_public_streams",
         "can_invite_others_to_realm",
         "can_subscribe_other_users",
         "corporate_enabled",