# This is a script which is for retention of video files on a Plex Server (DVR)
# The sample use case is retaining only the most recent news program (i.e. yesterday's news)

# The original script was designed to find all videos older than 10 hours and delete them. This would
# run daily at 6:30pm by a cron job. Essentially this was "delete all episodes older than 10 hours"

# The new script is designed to save the most recent video file. This allows for weekly programs with
# episodes older than 1 day, to be retained. Essentially this becomes "keep latest 1 episode" 

# --------------------------------------------------------------------------------------------------
# MIT License

# Copyright (c) 2020 Pranav Mishra
# Online repository at https://github.com/pranavmishra90

# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:

# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# --------------------------------------------------------------------------------------------------

# It is recommended to run this as a cron job daily

# Uncomment following line if you need the script executed as bash
#!/bin/bash


#News Directory - follwing the 'cd' command, enter the parent directory which you would like the script to run on
cd /volume1/Plex-Media/News

shopt -s globstar
for dir in **/; do
	#The script will enter into each folder, search each subdirectory, with depth '1'. 
	#This means that your folder structure should be:
	# /News
	# /News/Show-1/Season X
	# /News/Show-1/Season Y

	# /News/Show-2/Season X
	# /News/Show-2/Season Y

	# /News/Show-3/Season X
	# /News/Show-3/Season Y


	# The script will enter each season folder, find the latest episode, and delete all of the others
	# It will only find .ts containered files (which are recorded by the DVR)
   	find "$dir" -maxdepth 1 -type f -name '*.ts' -printf '%T@ %p\0' |
	sort -rnz |

	# The value of the number below should be n+1, where 'n' is the number of files you want
	# The default value is 2, which means only the most recent file will be kept

	sed -nz '2,$s/[^ ]* //p' 
	done | xargs -0 rm --


#------------------------------------------------------------------
# !!Older script!! - Depracated
# Deletes all .ts and .mp4 files older than 10 hours. 
#------------------------------------------------------------------

#ls *.ts -t | tail -n +2 | xargs rm --

#find . -type f -name "*.mp4" -o -name "*.ts" -mmin +600
#find . -type f -name "*.mp4" -o -name "*.ts" -mmin +600 -delete