#!python3

# https://github.com/hMatoba/Piexif
# http://ce3wiki.theturninggate.net/doku.php?id=file_name_convention
# destination: <BASE>/<year>/<YYYYMMDD> <Event>/ab-<YYYYMMDD>-<Event>-<nnnn>.jpg

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

SRC = r'E:\MediaArchive\Andreas\RawByDate\2004'
# camera = "Minolta"
author = 'ab'
dry_run = False

# def constant_factory(value):
#     return lambda: value
# fileidx = defaultdict(constant_factory(0))

fileidx = defaultdict(int)

for daydir in Path(SRC).iterdir():
    mo = re.match("(?P<dt>\S*)\s(?P<title>.*)", daydir.name)
    md = mo.groupdict()
    title = md['title']
    for raw in daydir.rglob(f"*.jpg"):
        # check whether exif works
        try:
            exif_dict = piexif.load(str(raw))
            model = exif_dict["0th"][piexif.ImageIFD.Model].decode("ascii")
            idto = exif_dict["Exif"][piexif.ExifIFD.DateTimeOriginal].decode("ascii")
            rawdt = dt.datetime.strptime(idto,"%Y:%m:%d %H:%M:%S")
        except:
            model = None
            print(f'exif failed {raw.name}, using file date')
            mtime = raw.stat().st_mtime
            rawdt = dt.datetime.fromtimestamp(mtime)
        # digitized negative photo?
        if model == 'Canon EOS 5D':
            rawdt = dt.datetime.strptime(md['dt'],"%Y%m%d")
            use_ts = False
        else:
            use_ts = True
        if model == 'FinePix S602 ZOOM':
            author = "nn"
        else:
            author = "ab"
        year = rawdt.year
        day = f"{rawdt:%Y%m%d}"
        ts = f"{rawdt:%H%M%S}"
        if use_ts:
            destfn = raw.parent / f"{author}-{day}-{title}-{ts}{raw.suffix}"
        else:
            index = fileidx[day] + 1
            fileidx[day] = index
            destfn = raw.parent / f"{author}-{day}-{title}-{index:04}{raw.suffix}"
            # destfn = raw.parent / f"{author}-{day}-{title}-{index:04}-{camera}{raw.suffix}"
        print(raw.name, "->", destfn.name)
        if not dry_run:
            if not destfn.exists():
                raw.rename(destfn)
            else:  
                print(f"skipped {raw.name}, {destfn.name}, already exists")
    camera = "Sony TRV_25E"
    for raw in daydir.rglob(f"*.avi"):
        mtime = raw.stat().st_mtime
        rawdt = dt.datetime.fromtimestamp(mtime)
        year = rawdt.year
        day = f"{rawdt:%Y%m%d}"
        ts = f"{rawdt:%H%M%S}"
        index = fileidx[day] + 1
        fileidx[day] = index
        destfn = raw.parent / f"{author}-{day}-{title}-{ts}-{camera}{raw.suffix}"
        print(raw.name, "->", destfn.name)
        if not dry_run:
            if not destfn.exists():
                raw.rename(destfn)
            else:  
                print(f"skipped {raw.name}, {destfn.name}, already exists")