Add support to import with xl file format

backend/main.py

@@ -1493,6 +1493,32 @@ def _parse_csv_rows(content: bytes) -> list[dict]:
     return [dict(row) for row in reader]
 
 
+def _parse_xlsx_rows(content: bytes) -> list[dict]:
+    """Parse an XLSX (Excel) file and return a list of dicts.
+    Uses the first sheet; first row is treated as the header.
+    """
+    import openpyxl
+    wb = openpyxl.load_workbook(io.BytesIO(content), read_only=True, data_only=True)
+    ws = wb.active
+    rows = list(ws.iter_rows(values_only=True))
+    wb.close()
+    if not rows:
+        return []
+    # First row = headers; normalise None headers to empty string
+    headers = [str(h).strip() if h is not None else "" for h in rows[0]]
+    result = []
+    for row in rows[1:]:
+        # Skip completely empty rows
+        if all(v is None or str(v).strip() == "" for v in row):
+            continue
+        result.append({
+            headers[i]: (str(v).strip() if v is not None else "")
+            for i, v in enumerate(row)
+            if i < len(headers) and headers[i]  # skip header-less columns
+        })
+    return result
+
+
 def _parse_json_rows(content: bytes) -> list[dict]:
     """Parse a JSON file — supports array at root OR {data: [...]}."""
     payload = json.loads(content.decode("utf-8-sig", errors="replace"))
@@ -1593,15 +1619,19 @@ async def import_contacts(
     try:
         if filename.endswith(".json"):
             raw_rows = _parse_json_rows(content)
-        elif filename.endswith(".csv") or filename.endswith(".xlsx"):
-            # For XLSX export from our own app, treat as CSV (xlsx export from
-            # GuestList produces proper column headers in English)
+        elif filename.endswith(".xlsx"):
+            raw_rows = _parse_xlsx_rows(content)
+        elif filename.endswith(".csv"):
             raw_rows = _parse_csv_rows(content)
         else:
-            # Sniff: try JSON then CSV
+            # Sniff: try JSON → xlsx magic bytes → CSV
             try:
                 raw_rows = _parse_json_rows(content)
             except Exception:
+                # XLSX files start with PK (zip magic bytes 50 4B)
+                if content[:2] == b'PK':
+                    raw_rows = _parse_xlsx_rows(content)
+                else:
                     raw_rows = _parse_csv_rows(content)
     except Exception as exc:
         raise HTTPException(status_code=422, detail=f"Cannot parse file: {exc}")

backend/requirements.txt

@@ -6,3 +6,4 @@ pydantic[email]>=2.5.0
 httpx>=0.25.2
 python-dotenv>=1.0.0
 python-multipart>=0.0.7
+openpyxl>=3.1.2

frontend/src/components/ImportContacts.jsx

@@ -118,7 +118,7 @@ function ImportContacts({ eventId, onImportComplete }) {
             <input
               ref={fileInputRef}
               type="file"
-              accept=".csv,.json"
+              accept=".csv,.json,.xlsx"
               style={{ display: 'none' }}
               onChange={handleFileChange}
             />