From 0f1eb3e914a1e47e441bd8bfb7d523882646fb6e Mon Sep 17 00:00:00 2001
From: David Baker <dave@matrix.org>
Date: Tue, 10 Oct 2017 15:23:00 +0100
Subject: [PATCH] Use notification levels in power_levels

Rather than making the condition directly require a specific power
level. This way the level require to notify a room can be configured
per room.
---
 synapse/push/baserules.py                |  4 ++--
 synapse/push/bulk_push_rule_evaluator.py | 10 ++++++----
 synapse/push/push_rule_evaluator.py      | 20 ++++++++++++++------
 3 files changed, 22 insertions(+), 12 deletions(-)

diff --git a/synapse/push/baserules.py b/synapse/push/baserules.py
index 71f9ab6b25..9dce99ebec 100644
--- a/synapse/push/baserules.py
+++ b/synapse/push/baserules.py
@@ -249,8 +249,8 @@ BASE_APPEND_OVERRIDE_RULES = [
                 '_id': '_roomnotif_content',
             },
             {
-                'kind': 'sender_power_level',
-                'is': '>=50',
+                'kind': 'sender_notification_permission',
+                'key': 'room',
                 '_id': '_roomnotif_pl',
             },
         ],
diff --git a/synapse/push/bulk_push_rule_evaluator.py b/synapse/push/bulk_push_rule_evaluator.py
index adc99bd4f6..db07a97a94 100644
--- a/synapse/push/bulk_push_rule_evaluator.py
+++ b/synapse/push/bulk_push_rule_evaluator.py
@@ -113,7 +113,7 @@ class BulkPushRuleEvaluator(object):
         )
 
     @defer.inlineCallbacks
-    def _get_sender_power_level(self, event, context):
+    def _get_power_levels_and_sender_level(self, event, context):
         pl_event_id = context.prev_state_ids.get(POWER_KEY)
         if pl_event_id:
             # fastpath: if there's a power level event, that's all we need, and
@@ -129,7 +129,9 @@ class BulkPushRuleEvaluator(object):
                 (e.type, e.state_key): e for e in auth_events.itervalues()
             }
 
-        defer.returnValue(get_user_power_level(event.sender, auth_events))
+        sender_level = get_user_power_level(event.sender, auth_events)
+
+        defer.returnValue((auth_events[POWER_KEY].content, sender_level))
 
     @defer.inlineCallbacks
     def action_for_event_by_user(self, event, context):
@@ -146,10 +148,10 @@ class BulkPushRuleEvaluator(object):
             event, context
         )
 
-        sender_power_level = yield self._get_sender_power_level(event, context)
+        (power_levels, sender_power_level) = yield self._get_power_levels_and_sender_level(event, context)
 
         evaluator = PushRuleEvaluatorForEvent(
-            event, len(room_members), sender_power_level
+            event, len(room_members), sender_power_level, power_levels,
         )
 
         condition_cache = {}
diff --git a/synapse/push/push_rule_evaluator.py b/synapse/push/push_rule_evaluator.py
index 7cf777f16f..5011bef4f1 100644
--- a/synapse/push/push_rule_evaluator.py
+++ b/synapse/push/push_rule_evaluator.py
@@ -33,8 +33,15 @@ def _room_member_count(ev, condition, room_member_count):
     return _test_ineq_condition(condition, room_member_count)
 
 
-def _sender_power_level(ev, condition, power_level):
-    return _test_ineq_condition(condition, power_level)
+def _sender_notification_permission(ev, condition, sender_power_level, power_levels):
+    notif_level_key = condition.get('key')
+    if notif_level_key is None:
+        return False
+
+    notif_levels = power_levels.get('notifications', {})
+    room_notif_level = notif_levels.get(notif_level_key, 50)
+
+    return sender_power_level >= room_notif_level;
 
 
 def _test_ineq_condition(condition, number):
@@ -74,10 +81,11 @@ def tweaks_for_actions(actions):
 
 
 class PushRuleEvaluatorForEvent(object):
-    def __init__(self, event, room_member_count, sender_power_level):
+    def __init__(self, event, room_member_count, sender_power_level, power_levels):
         self._event = event
         self._room_member_count = room_member_count
         self._sender_power_level = sender_power_level
+        self._power_levels = power_levels
 
         # Maps strings of e.g. 'content.body' -> event["content"]["body"]
         self._value_cache = _flatten_dict(event)
@@ -91,9 +99,9 @@ class PushRuleEvaluatorForEvent(object):
             return _room_member_count(
                 self._event, condition, self._room_member_count
             )
-        elif condition['kind'] == 'sender_power_level':
-            return _sender_power_level(
-                self._event, condition, self._sender_power_level
+        elif condition['kind'] == 'sender_notification_permission':
+            return _sender_notification_permission(
+                self._event, condition, self._sender_power_level, self._power_levels,
             )
         else:
             return True