#!/bin/bash
# Print timestamps for Unix-epoch style filenames commonly used on *chan imageboards
# Currently doesn't work for 2ch.hk filenames as it uses 10^-4 seconds since Unix epoch as timestamp
# mkdir "timestamped"
for FILE_PATH in "$@";do
	# Removes file system path, also accepts URLs
	# https://mintboard.org/vichan/bone/src/1696676575662-1.jpg > 1696676575662-1.jpg
	FILENAME="$(basename "$FILE_PATH")"
	# Removes extension
	# 1696329854234.jpg > 1696329854234
	TSTAMP="${FILENAME%.*}"
	# Removes 's' used to denote thumbnails on futaba/wakaba/kusaba/*aba derivatives
	# 1696329854234s > 1696329854234
	TSTAMP="${TSTAMP%s*}"
	# Removes ordering number after dash '-' used to denote multiple uploads per post on vichan/lainchan derivatives
	# 1696676575662-0 > 1696676575662
	TSTAMP="${TSTAMP%-*}"
	POST_DATE=$(date --utc -d @$(("$TSTAMP"/1000)) +'%Y-%m-%d %H:%M:%S UTC')
	echo "$POST_DATE $FILENAME"
	# Make new file preserving original attributes like creation/modification time
	# cp -p "$FILE_PATH" "timestamped/$NEW_FILENAME";
done