picd

#!/bin/bash

# files up to 5am are considered part of the previous day
TIME_OFFSET_HOURS=5
TIME_OFFSET_SECONDS=$((TIME_OFFSET_HOURS * 3600))

format="%Y-%m-%d.%a"
dryRun=0

while [[ $1 == -* ]]; do
	if [ "$1" = "-m" ]; then
		format="%Y-%m.week-%U"
		shift
		continue
	fi

	if [ "$1" = "-f" ]; then
		format="$2";
		shift
		shift
		continue
	fi

	if [ "$1" = "-h" ]; then
		cat <<EOF

	picd [-m] [-f timeFormat] [-h] file [file..]
		-m			save in weekly+monthly folders (%Y-%m.week-$U)
		-f fmt		use time format fmt
		-h			print this help
		-n			dry run - don't actually do anything

EOF
		exit 0
	fi
	
	if [ "$1" = "-n" ]; then
		dryRun=1
		shift
		continue
	fi

	echo "${0}: Unrecognized flag: $1"
	exit 1
done

if [[ "x$format" = "x"  || "x$format" = "x."  || "x$format" = "x.." ]]; then
	echo "Empty or illegal format '""$format""'. Stopping."
	exit 1
fi

for file; do
	stats=($(stat -r "$file"))
	#echo "$file - stats# is ${#stats}, stats is $stats"
	modTime=${stats[9]}
	#echo "$file - $modTime = $(date -r $modTime)"
	dirName=$(date -r $((modTime - TIME_OFFSET_SECONDS)) +"${format}")
	echo mv "$file" $dirName
	if [[ $dryRun = 0 ]]; then
		mkdir -p $dirName
		mv -i "$file" $dirName
	fi
done