ytd

#!/bin/bash

#ytd calls youtube-dl with -f mp4 then updates the date modified of the downloaded file.  
#default directory is the home directory

script=$( basename $0 )

#params check
if [ $# -eq 0 ] 
then
   echo "Usage: $script <URL>"  1>&2
   exit 1
fi

#initialize
echo "ytd: download in progress" 
set +o noclobber 
file=' '
echo ' ' > ytd_log    #override old file
trap "rm ytd_log -f" exit 1 2 3 9 19 20

#download then print output (tty and file)
youtube-dl "$*" -f mp4 |
while read line
do
  echo "$line" | tee -a ytd_log   	
done 

#obtain file name
file=$( cat ytd_log | grep "\[download\] Destination:" | gawk -F': ' '{print $2}' )
   # [Valid alternative] cat ytd_log | grep Destination: | cut -d: -f2

#if already downloaded end here
cat ytd_log | grep "already been downloaded" > /dev/null
if [ $? -eq 0 ]     
then
   echo 
   echo "$script says: already downloaded.  check file name" 1>&2 
   exit 1
fi

#touch new file because date from Youtube will be inaccurate
if [ -f "$file" ];
then
  touch "$file"
else
  echo "ytd says:"
  echo "No such file.  Cannot set date modified.  Please check the file name"  1>&2
fi














#created 08/03/2018