dotfiles/config/nix/scripts/mediaDuration

#!/usr/bin/env nix-shell
#! nix-shell -i python3 --pure
#! nix-shell -p python3 python3Packages.coloredlogs ffmpeg

import logging
import os
import subprocess
import sys

import coloredlogs

coloredlogs.install(level="DEBUG", fmt="%(levelname)s %(message)s")
log = logging.getLogger()


def duration_file(path: str) -> float:
    cmd = [
        "ffprobe",
        "-v",
        "error",
        "-show_entries",
        "format=duration",
        "-of",
        "default=noprint_wrappers=1:nokey=1",
        path,
    ]
    run = subprocess.run(cmd, stdout=subprocess.PIPE)
    ret = run.stdout.decode().strip()
    if run.returncode != 0:
        log.warning(f"{path}: unable to get duration")
    elif ret == "N/A":
        log.warning(f"{path}: has no duration")
    else:
        try:
            return float(ret)
        except ValueError:
            log.error(f"{path}: returned {ret}")
    return 0


def duration_directory(path: str) -> float:
    total = 0.0
    for root, dirs, files in os.walk(path):
        for f in files:
            fullPath = os.path.join(root, f)
            total += duration_file(fullPath)
    return total


total = 0.0
for arg in sys.argv[1:]:
    if os.path.isfile(arg):
        total += duration_file(arg)
    elif os.path.isdir(arg):
        total += duration_directory(arg)
    else:
        raise FileNotFoundError(f"No such file or directory: '{arg}'")


print(total)