Update web/core/views.py

web/core/views.py

@@ -341,51 +341,79 @@ def import_wizard(request):
         try:
             raw = form.cleaned_data["file"].read()
 
-                # --- super-defensive header peek (never raises) ---
             import io, csv as _csv
-                sio = io.StringIO(raw.decode("utf-8-sig", errors="replace"))
 
-                header_ok = False
+            # Decode once (BOM-safe)
+            text = raw.decode("utf-8-sig", errors="replace")
+
+            # Try to sniff a dialect; fall back to Excel-style CSV
             try:
-                    rdr = _csv.reader(sio)
-                    first_row = next(rdr, [])
+                first_line = text.splitlines()[0] if text else ""
+                dialect = _csv.Sniffer().sniff(first_line) if first_line else _csv.excel
+            except Exception:
+                dialect = _csv.excel
 
-                    def _clean(s):
+            rdr = _csv.reader(io.StringIO(text), dialect)
+            rows = list(rdr)
+            if not rows:
+                raise ValueError("The CSV file appears to be empty.")
+
+            # Expected header (DB field order)
+            expected = [
+                "Subject", "Illustration", "Application", "Scripture", "Source",
+                "Talk Title", "Talk Number", "Code", "Date", "Date Edited",
+            ]
+            expected_norm = [h.lower() for h in expected]
+
+            # Header cleaner: fixes r:"Talk Title", stray quotes, spaces, case
+            def _clean_header(s):
                 s = "" if s is None else str(s)
-                        # strip quotes and odd prefixes like r:"Talk Title"
-                        s = s.strip().strip("'").strip('"')
-                        if s.lower().startswith("r:"):
+                s = s.strip()
+                if s.lower().startswith("r:") or s.lower().startswith("r="):
                     s = s[2:].lstrip()
+                if (len(s) >= 2) and (s[0] == s[-1]) and s[0] in ('"', "'"):
+                    s = s[1:-1]
                 return s.strip().lower()
 
-                    norm = [_clean(c) for c in first_row]
+            first = rows[0]
+            norm_first = [_clean_header(c) for c in first]
 
-                    expected = [h.strip().lower() for h in _EXPECTED_HEADERS]
-                    header_ok = (norm == expected)
-                except Exception:
-                    header_ok = False
-                finally:
-                    # Rewind so the real importer reads the full file
-                    sio.seek(0)
+            # If first row isn’t our header but length matches, inject one
+            header_ok = (norm_first == expected_norm)
+            if not header_ok and len(first) == len(expected):
+                rows.insert(0, expected)
+            elif not header_ok and len(first) != len(expected):
+                # Try common alternate delimiters if column count is off
+                for delim in (";", "\t"):
+                    rdr2 = _csv.reader(io.StringIO(text), delimiter=delim)
+                    test_rows = list(rdr2)
+                    if test_rows and len(test_rows[0]) == len(expected):
+                        rows = test_rows
+                        first = rows[0]
+                        norm_first = [_clean_header(c) for c in first]
+                        header_ok = (norm_first == expected_norm)
+                        if not header_ok:
+                            rows.insert(0, expected)
+                        break
 
-                # Make sure utils knows the expected headers
+            # Re-encode a sanitized CSV for the existing importer
+            out = io.StringIO()
+            w = _csv.writer(out)
+            for r in rows:
+                w.writerow(r)
+            fixed_raw = out.getvalue().encode("utf-8")
+
+            # Keep utils in sync for importer variants that read EXPECTED_HEADERS
             from . import utils as core_utils
-                if not hasattr(core_utils, "EXPECTED_HEADERS"):
-                    core_utils.EXPECTED_HEADERS = _EXPECTED_HEADERS
+            core_utils.EXPECTED_HEADERS = expected
 
-                # Hand off to your robust importer
-                report = import_csv_bytes(
-                    raw,
-                    dry_run=form.cleaned_data["dry_run"],
-                )
-
-                # Attach header check info
-                report = report or {}
+            # Hand off to the robust importer you already have
+            report = import_csv_bytes(fixed_raw, dry_run=form.cleaned_data["dry_run"]) or {}
             report["header_ok"] = header_ok
             if not header_ok:
                 messages.warning(
                     request,
-                        "The first row does not match the expected header; assuming the file has no header."
+                    "The first row didn’t match the expected header; a clean header was injected automatically."
                 )
 
             return render(
@@ -397,8 +425,6 @@ def import_wizard(request):
             messages.error(request, f"Import failed: {e}")
 else:
     form = ImportForm()
-
-    # 👇 stays inside the function
 return render(request, "import_wizard.html", {"form": form})