feat: show EXIF field name in output (DateTimeOriginal/Digitized/DateTime)

organize.py

@@ -83,6 +83,17 @@ def _c(text: str, colour: str, *, no_color: bool = False) -> str:
 
 # ── EXIF extraction (JPEG — piexif, 5-10x faster than PIL) ──────────────────
 
+# Tracks the last EXIF field name used (for display in output)
+_last_exif_field = ''
+
+_EXIF_FIELD_NAMES = {36867: 'DateTimeOriginal', 36868: 'DateTimeDigitized', 306: 'DateTime'}
+
+
+def _set_last_field(tag_id: int) -> None:
+    global _last_exif_field
+    _last_exif_field = _EXIF_FIELD_NAMES.get(tag_id, f'Tag#{tag_id}')
+
+
 def _read_jpeg_exif_piexif(path: Path) -> str | None:
     """Read DateTimeOriginal from a JPEG using piexif (no PIL needed).
 
@@ -97,13 +108,14 @@ def _read_jpeg_exif_piexif(path: Path) -> str | None:
 
     exif = exif_dict.get('Exif', {})
     image = exif_dict.get('Image', {})
-    raw = (exif.get(piexif.ExifIFD.DateTimeOriginal) or
-           image.get(piexif.ImageIFD.DateTime))
-    if raw:
-        try:
-            return raw.decode('utf-8')
-        except Exception:
-            return None
+    for tag_id in (piexif.ExifIFD.DateTimeOriginal, piexif.ExifIFD.DateTimeDigitized, piexif.ImageIFD.DateTime):
+        raw = exif.get(tag_id) or image.get(tag_id)
+        if raw:
+            _set_last_field(tag_id)
+            try:
+                return raw.decode('utf-8')
+            except Exception:
+                return None
     return None
 
 
@@ -125,9 +137,10 @@ def _read_jpeg_exif_pil(path: Path) -> str | None:
         return None
 
     tag_map = {v: k for k, v in TAGS.items()}
-    for tag_name in ('DateTimeOriginal', 'DateTime'):
+    for tag_name in ('DateTimeOriginal', 'DateTime', 'DateTimeDigitized'):
         tag_code = tag_map.get(tag_name)
         if tag_code and tag_code in raw:
+            _set_last_field(tag_code)
             return raw[tag_code]
     return None
 
@@ -168,9 +181,10 @@ def _read_other_exif_pil(path: Path) -> str | None:
         return None
 
     tag_map = {v: k for k, v in TAGS.items()}
-    for tag_name in ('DateTimeOriginal', 'DateTime'):
+    for tag_name in ('DateTimeOriginal', 'DateTime', 'DateTimeDigitized'):
         tag_code = tag_map.get(tag_name)
         if tag_code and tag_code in raw:
+            _set_last_field(tag_code)
             return raw[tag_code]
     return None
 
@@ -189,6 +203,7 @@ def _read_cr2_exif(path: Path) -> str | None:
             ):
                 raw_val = exif_dict.get(ifd_name, {}).get(tag_id)
                 if raw_val:
+                    _set_last_field(tag_id)
                     return raw_val.decode('utf-8')
         except Exception:
             pass
@@ -204,6 +219,7 @@ def _read_cr2_exif(path: Path) -> str | None:
             for tag_code in (36867, 36868, 306):  # DateTimeOriginal, Digitized, DateTime
                 val = raw.get(tag_code)
                 if val:
+                    _set_last_field(tag_code)
                     return val
     except Exception:
         pass
@@ -358,6 +374,7 @@ def organize(
         # ── Track stats ────────────────────────────────────────────────
         if from_exif:
             exif_count += 1
+            date_source_label = _last_exif_field or 'EXIF'
         else:
             fs_count += 1
         year_counts[dt.year] += 1