Sorts media files into directories by the date when they were created

organize_media

#!/bin/bash

# Sorts media files into directories by the date when they were
# created. There is no time zone conversion: Many media files don't
# contain a time zone, or they default to UTC.

# Felix E. Klee <felix.klee@inka.de>

shopt -s nullglob

PICTURE_FORMATS="*.jpg *.JPG *.jpeg *.dng *.DNG *.arw *.ARW *.png *.PNG"
VIDEO_FORMATS="*.mov *.MOV *.mp4 *.MP4"
SOUND_FORMATS="*.wav *.WAV"

extract_screenshot_date_format_1() {
    regex="Screenshot_([0-9]{4}-[0-9]{2}-[0-9]{2}).*"
    if [[ $1 =~ $regex ]]
    then
        echo ${BASH_REMATCH[1]}
    fi
}

extract_screenshot_date_format_2() {
    regex="Screenshot_([0-9]{4})([0-9]{2})([0-9]{2})-.*"
    if [[ $1 =~ $regex ]]
    then
        echo ${BASH_REMATCH[1]}-${BASH_REMATCH[2]}-${BASH_REMATCH[3]}
    fi
}

extract_exif_date() {
    exiv2 -g Exif.Image.DateTime -Pv "$1" | \
        sed -E 's/^([0-9]{4}):([0-9]{2}):([0-9]{2}).*/\1-\2-\3/'
}

extract_picture_date() {
    d=$(extract_exif_date "$1")
    if [[ -z $d || $d == "-" ]]
    then
        d=$(extract_screenshot_date_format_1 "$1")
    fi
    if [[ -z $d || $d == "-" ]]
    then
        d=$(extract_screenshot_date_format_2 "$1")
    fi
    echo $d
}

extract_video_date() {
    # Don't convert time zone, leave as is!
    s=$(ffprobe -v quiet -print_format flat -show_format "$1" | grep creation_time | cut -d= -f2-)
    echo ${s:1:10}
}

extract_sound_date() {
    s=$(ffprobe -v quiet -print_format flat -show_format "$1" | grep format.tags.date | cut -d= -f2-)
    echo ${s:1: -1} # removes quotes
}

extract_date() {
    for a in $PICTURE_FORMATS
    do
        if [ "$1" == "$a" ]
        then
            extract_picture_date "$1"
        fi
    done
    for a in $VIDEO_FORMATS
    do
        if [ "$1" == "$a" ]
        then
            extract_video_date "$1"
        fi
    done
    for a in $SOUND_FORMATS
    do
        if [ "$1" == "$a" ]
        then
            extract_sound_date "$1"
        fi
    done
}

for a in $PICTURE_FORMATS $VIDEO_FORMATS $SOUND_FORMATS
do
    d=$(extract_date "$a")
    if [[ -z $d || $d == "-" ]]
    then
        continue
    fi
    mkdir -p "$d"
    echo "Moving $a to $d/$a"
    mv -i "$a" "$d/$a"

    sidecar_filename="$a.xmp"
    if [[ -f "$sidecar_filename" ]]
    then
        echo "Moving $sidecar_filename to $d/$sidecar_filename"
        mv -i "$sidecar_filename" "$d/$sidecar_filename"
    fi

    b="${a%.*}"
    sidecar_filename="$b.xmp"
    if [[ -f "$sidecar_filename" ]]
    then
        echo "Moving $sidecar_filename to $d/$sidecar_filename"
        mv -i "$sidecar_filename" "$d/$sidecar_filename"
    fi

    c="${a%.*}"
    sidecar_filename="$c"M01.XML # Used by Sony for videos, for example
    if [[ -f "$sidecar_filename" ]]
    then
        echo "Moving $sidecar_filename to $d/$sidecar_filename"
        mv -i "$sidecar_filename" "$d/$sidecar_filename"
    fi
done