Initial

custom_components/ha_washdata/phase_assignment.py

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+"""Helpers for phase range assignment and timestamp conversion."""
+
+from __future__ import annotations
+
+from datetime import datetime
+
+from homeassistant.util import dt as dt_util
+
+
+def parse_phase_timestamp(value: str, cycle_start_dt: datetime) -> datetime | None:
+    """Parse timestamp text used in phase assignment.
+
+    Supported formats:
+    - Full parseable datetime (via Home Assistant parser)
+    - YYYY-MM-DD HH:MM
+    - YYYY-MM-DD HH:MM:SS
+    - HH:MM (on cycle start date)
+    - HH:MM:SS (on cycle start date)
+    """
+    text = str(value or "").strip()
+    if not text:
+        return None
+
+    parsed = dt_util.parse_datetime(text)
+    if parsed is not None:
+        if parsed.tzinfo is None:
+            parsed = parsed.replace(tzinfo=cycle_start_dt.tzinfo)
+        return parsed
+
+    for fmt in ("%Y-%m-%d %H:%M", "%Y-%m-%d %H:%M:%S"):
+        try:
+            dt_val = datetime.strptime(text, fmt)
+            return dt_val.replace(tzinfo=cycle_start_dt.tzinfo)
+        except ValueError:
+            continue
+
+    for fmt in ("%H:%M", "%H:%M:%S"):
+        try:
+            t_val = datetime.strptime(text, fmt)
+            base = dt_util.as_local(cycle_start_dt)
+            return base.replace(
+                hour=t_val.hour,
+                minute=t_val.minute,
+                second=t_val.second,
+                microsecond=0,
+            )
+        except ValueError:
+            continue
+
+    return None