apitypes: sourceNumber can be null

apitypes.py

@@ -122,6 +122,45 @@ def test_reaction_message():
     assert m.envelope.dataMessage.reaction.isRemove is False
     assert m.account == "+4900000000002"
 
+    # This is a message with a reaction from an anonymous
+    # source (where the source number is not known to the bot)
+    # sourceNumber is None/null here
+
+    data2 = """{
+        "envelope": {
+            "source": "00000000-0000-0000-0000-000000000000",
+            "sourceNumber": null,
+            "sourceUuid": "00000000-0000-0000-0000-000000000000",
+            "sourceName": "Anonymous",
+            "sourceDevice": 2,
+            "timestamp": 1735490493003,
+            "serverReceivedTimestamp": 1735490493148,
+            "serverDeliveredTimestamp": 1735490493149,
+            "dataMessage": {
+                "timestamp": 1735490493003,
+                "message": null,
+                "expiresInSeconds": 0,
+                "viewOnce": false,
+                "reaction": {
+                    "emoji": "👎",
+                    "targetAuthor": "+4900000000001",
+                    "targetAuthorNumber": "+4900000000001",
+                    "targetAuthorUuid": "00000000-0000-0000-0000-000000000000",
+                    "targetSentTimestamp": 1735490231727,
+                    "isRemove": false
+                }
+            }
+        },
+        "account": "+4900000000001"
+    }"""
+
+    res2 = parse_response(Message, data2)
+    assert res2.is_ok()
+
+    m2 = res2.unwrap()
+    assert(m2.envelope.source == "00000000-0000-0000-0000-000000000000")
+    assert(m2.envelope.sourceNumber is None)
+
 def test_simple_message():
     data = """{
         "envelope": {
@@ -550,8 +589,8 @@ class EditMessage(BaseModel):
     dataMessage: DataMessage
 
 class Envelope(BaseModel):
-    source: str
-    sourceNumber: str
+    source: str # can be uuid or number
+    sourceNumber: str | None # Might be none if the bot doesn't know the phone number
     sourceUuid: str
     sourceName: str
     sourceDevice: int