fhir_to_pad_converter.py working

utils.py

@@ -0,0 +1,46 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+Utility functions for the FHIR to PAD converter.
+"""
+
+from datetime import datetime
+from typing import Any, Dict, List, Optional
+import xml.etree.ElementTree as ET
+
+def parse_iso_date(s: str) -> Optional[datetime]:
+    try:
+        return datetime.fromisoformat(s.replace("Z", "+00:00"))
+    except (ValueError, TypeError):
+        try:
+            return datetime.fromisoformat(s)
+        except (ValueError, TypeError):
+            return None
+
+def format_iso_date(d: datetime) -> str:
+    return d.date().isoformat()
+
+def get_ref_id(ref: Optional[str]) -> Optional[str]:
+    if not ref or "/" not in ref:
+        return None
+    return ref.split("/")[-1] or None
+
+def ensure_text(el: Optional[ET.Element], default: str = "") -> str:
+    if el is None:
+        return default
+    return (el.text or "").strip()
+
+def collect_effective_dates(resource: Dict[str, Any]) -> List[datetime]:
+    dates: List[datetime] = []
+    for key in ["effectiveDateTime", "issued", "authoredOn", "date"]:
+        val = resource.get(key)
+        if isinstance(val, str):
+            d = parse_iso_date(val)
+            if d:
+                dates.append(d)
+    meta = resource.get("meta", {})
+    if isinstance(meta, dict) and isinstance(meta.get("lastUpdated"), str):
+        d = parse_iso_date(meta["lastUpdated"])
+        if d:
+            dates.append(d)
+    return dates