fix(alerts): handle dictionary payload for crashlytics digestDate

src/firebase_functions/private/util.py

@@ -369,8 +369,20 @@ def normalize_timestamp_string(time: str) -> str:
     return f"{prefix}.{digits[:6]}{timezone}"
 
 
-def timestamp_conversion(time: str) -> _dt.datetime:
-    """Converts an ISO 8601 timestamp and returns a timezone-aware datetime object."""
+def timestamp_conversion(time: str | dict) -> _dt.datetime:
+    """Converts an ISO 8601 timestamp or dictionary and returns a timezone-aware datetime object."""
+    if isinstance(time, dict):
+        seconds = time.get("seconds")
+        seconds = int(seconds) if seconds is not None else 0
+
+        nanos = time.get("nanos")
+        if nanos is None:
+            nanos = time.get("nanoseconds")
+        nanos = int(nanos) if nanos is not None else 0
+
+        base_dt = _dt.datetime.fromtimestamp(seconds, tz=_dt.timezone.utc)
+        return base_dt + _dt.timedelta(microseconds=nanos // 1000)
+
     normalized_time = normalize_timestamp_string(time)
     if "." not in normalized_time:
         return _dt.datetime.strptime(normalized_time, "%Y-%m-%dT%H:%M:%S%z")

tests/test_util.py

@@ -57,6 +57,14 @@ def test_timestamp_conversion_supported_formats():
     Testing shared timestamp conversion handles supported RTDB and CloudEvent formats.
     """
     timestamps = [
+        (
+            {"seconds": 1712750400, "nanos": 0},
+            _dt.datetime(2024, 4, 10, 12, 0, tzinfo=_dt.timezone.utc),
+        ),
+        (
+            {"seconds": 1712750400, "nanos": 123456000},
+            _dt.datetime(2024, 4, 10, 12, 0, 0, 123456, tzinfo=_dt.timezone.utc),
+        ),
         (
             "2024-04-10T12:00:00.000Z",
             _dt.datetime(2024, 4, 10, 12, 0, tzinfo=_dt.timezone.utc),