#!/bin/bash

set -x

for FN in *; do
    if [[ -f "$FN" ]]; then
        MTIME="$(stat -f "%Sm" "$FN")"
        if [[ ! -z "$MTIME" ]]; then
            # eg "Sep 13 05:02:26 2019"
            YYYY="$(date -j -f "%b %d %T %Y" "$MTIME" "+%Y")"
            MM="$(date -j -f "%b %d %T %Y" "$MTIME" "+%m")"
            DD="$(date -j -f "%b %d %T %Y" "$MTIME" "+%d")"
	    TD="${YYYY}/${YYYY}-${MM}/${YYYY}-${MM}-${DD}"
	    if [[ ! -d ./"$TD" ]]; then
	    	mkdir -p ./"$TD"
	    fi
	    if [[ ! -e ./"${TD}"/"$FN" ]]; then
	    	mv ./"$FN" ./"$TD"/"$FN"
	    	echo mv ./"$FN" ./"$TD"/"$FN"
            fi
        fi
    fi
done