exifmv.sh

#!/bin/sh

COLOR_RED="\e[33;31;1m"
COLOR_OFF="\e[m"

if [ -z "$1" ]
  then
    echo "No argument supplied"
  exit 1
fi

FROM=$1
EXT="${FROM##*.}"

# Remove leading ./
FIRST2CH=`echo "$FROM" | cut -c1-2`
if [ "$FIRST2CH" == "./" ]; then
  FROM=`echo "$FROM" | cut -c 3-`
fi

echo "----------------------------------------------------"
echo "Processing ${FROM}"

EXIF=`exiftool "${FROM}"`

TYPE=`echo "$EXIF" | grep -e MIME | tail -n 1 | awk -F": " '{print $2}' | cut -c1-5 `

if [ "$TYPE" == "image" ] || [ "$TYPE" == "video" ]; then
  EXT=`echo "$EXIF" | grep -e "File Type Extension" | tail -n 1 | awk -F": " '{print $2}' `
else
  echo "Not a multimedia file. No more further process."
  exit 0
fi
 
echo "Extension is ${EXT}..."

DATE=`echo "$EXIF" | grep -e Create | tail -n 1 | awk -F": " '{print $2}' | tr -d ":" `
echo "Taken at ${DATE}..."

if [ -z "${DATE}" ]; then
  DATE=`echo "$EXIF" | grep -e Modification | tail -n 1 | awk -F": " '{print $2}' | tr -d ":" `
  #DATE=`openssl rand -rand "${FROM}" -hex 16`
  echo "DATE is null, Fetch date from file. ${DATE}..."
  [ -z "${DATE}" ] && exit 0
fi

DEVICE=`echo "$EXIF" | grep -e Model | head -n 1 | awk -F": " '{print $2}'`
echo "Taken by ${DEVICE}..."

if [ -z "${DEVICE}" ]; then
  DEVICE="EXIF"
else
  DEV=`echo ${DEVICE} | cut -c1-9 `
  if [ "$DEV" == "iPhone 5s" ]; then
     DEVICE="$DEV"
  fi
fi

TO="${DEVICE}_${DATE}.${EXT}"

echo "Origin file name: $FROM"
echo "Plan change to  : $TO"

if [ "$FROM" == "$TO" ]; then
  echo "FROM and TO are the same. exit"
  exit 0
fi

CNT=0
while [ -e "${TO}" ]; do
  let CNT=CNT+1 
  TO="${DEVICE}_${DATE}_${CNT}.${EXT}"
done

echo -e "${COLOR_RED}Rename $FROM to $TO...${COLOR_OFF}"

[ ! -e "${TO}" ] && mv -- "$FROM" "$TO"