#!python3

# https://github.com/hMatoba/Piexif
# http://ce3wiki.theturninggate.net/doku.php?id=file_name_convention

from pathlib import Path
import datetime as dt
import piexif
from collections import defaultdict
import re

src = Path(r'E:\MediaArchive\Andreas\MaxQByDate\2005\Uncategorized')
dest = Path(r'E:\MediaArchive\Andreas\MaxQByDate')
dry_run = False

for suffix in ("jpg",):
    for pic in src.rglob(f"*.{suffix}"):
        try:
            exif_dict = piexif.load(str(pic))
            idto = exif_dict["Exif"][piexif.ExifIFD.DateTimeOriginal].decode("ascii")
            picdt = dt.datetime.strptime(idto,"%Y:%m:%d %H:%M:%S")
        except:
            print(f'exif failed {pic.name}, using file date')
            mtime = pic.stat().st_mtime
            picdt = dt.datetime.fromtimestamp(mtime)
        # create new dir with exif date and original title
        title = pic.parts[-2]
        mo = re.match("\d{8}",title)
        if mo is None:
            pic_dir = dest / str(picdt.year) / f"{picdt:%Y%m%d} {title}"
        else:
            pic_dir = dest / str(picdt.year) / f"{title}"
        if not pic_dir.exists():
            if not dry_run:
                print(f"creating {pic_dir}")
                pic_dir.mkdir(parents=True)
        pic_n = pic_dir / f"ab-{picdt:%Y%m%d}-{picdt:%H%M%S}{pic.suffix}"
        n = 1
        while pic_n.exists():
            pic_n = pic_dir / f"ab-{picdt:%Y%m%d}-{picdt:%H%M%S}-{n:02}{pic.suffix}"
            n += 1
        print(pic.name, "->", pic_n)
        if not dry_run:
            pic.rename(pic_n)