Move scripts dir inside hm

And remove weird path contraptions

hm/scripts/picture_name_date

@@ -0,0 +1,114 @@
+#!/usr/bin/env nix-shell
+#! nix-shell -i python3 --pure
+#! nix-shell -p python3 python3Packages.coloredlogs python3Packages.exifread
+
+import argparse
+import datetime
+import logging
+import os
+import re
+import typing
+
+import coloredlogs
+import exifread
+
+log = logging.getLogger(__name__)
+coloredlogs.install(level="DEBUG", fmt="%(levelname)s %(message)s", logger=log)
+
+EXTENSION_PATTERN = re.compile(r"\.(JPE?G|DNG)", re.I)
+COMMON_PATTERN = re.compile(r"(IMG|DSC[NF]?|100|P10|f|t)_?\d+", re.I)
+EXIF_TAG_ID = 0x9003  # DateTimeOriginal
+EXIF_DATE_FORMAT = "%Y:%m:%d %H:%M:%S"
+
+
+def get_pictures(directory: str = ".", skip_renamed: bool = True) -> typing.Generator:
+    for root, _, files in os.walk(directory):
+        for filename in files:
+            filename_trunk, extension = os.path.splitext(filename)
+
+            if not re.match(EXTENSION_PATTERN, extension):
+                continue
+            if skip_renamed:
+                if not re.match(COMMON_PATTERN, filename_trunk):
+                    continue
+            full_path = os.path.join(root, filename)
+            yield full_path
+
+
+def main(args: argparse.Namespace) -> None:
+    log.warning("Counting files...")
+    kwargs = {"directory": args.dir, "skip_renamed": args.skip_renamed}
+    log.warning("Processing files...")
+    for full_path in get_pictures(**kwargs):
+        # Find date
+        with open(full_path, "rb") as fd:
+            exif_data = exifread.process_file(fd)
+        if not exif_data:
+            log.warning(f"{full_path} does not have EXIF data")
+        for ifd_tag in exif_data.values():
+            if ifd_tag.tag == EXIF_TAG_ID:
+                date_raw = ifd_tag.values
+                break
+        else:
+            log.warning(f"{full_path} does not have required EXIF tag")
+            continue
+        date = datetime.datetime.strptime(date_raw, EXIF_DATE_FORMAT)
+
+        # Determine new filename
+        ext = os.path.splitext(full_path)[1].lower()
+        if ext == ".jpeg":
+            ext = ".jpg"
+        new_name = date.isoformat().replace(":", "-").replace("T", "_") + args.suffix
+        # First substitution is to allow images being sent to a NTFS filesystem
+        # Second substitution is for esthetics
+        new_path = os.path.join(args.dir, f"{new_name}{ext}")
+        # TODO Allow keeping image in same folder
+        i = 0
+        while os.path.exists(new_path):
+            if full_path == new_path:
+                break
+            log.debug(f"{new_path} already exists, incrementing")
+            i += 1
+            new_path = os.path.join(args.dir, f"{new_name}_{i}{ext}")
+
+        # Rename file
+        if full_path == new_path:
+            log.debug(f"{full_path} already at required filename")
+            continue
+        log.info(f"{full_path} →\t{new_path}")
+        if os.path.exists(new_path):
+            raise FileExistsError(f"Won't overwrite {new_path}")
+        if not args.dry:
+            os.rename(full_path, new_path)
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description="Rename images based on their dates")
+    parser.add_argument(
+        "dir",
+        metavar="DIRECTORY",
+        type=str,
+        default=".",
+        nargs="?",
+        help="Directory containing the pictures",
+    )
+    parser.add_argument(
+        "-d",
+        "--dry",
+        action="store_true",
+        help="Do not actually rename, just show old and new path",
+    )
+    parser.add_argument(
+        "-r",
+        "--skip-renamed",
+        action="store_true",
+        help="Skip images whose filename doesn't match usual camera output filenames.",
+    )
+    parser.add_argument(
+        "-s",
+        "--suffix",
+        default="",
+        help="Text to add before the extension",
+    )
+    args = parser.parse_args()
+    main(args)