dup-tv-finder

#!/bin/bash
#
# Copyright 2016 Jeremy Hansen <jebrhansen -at- gmail.com>
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# This script is used to detect multiple instances of TV show episodes.
# Currently, it ignores any srt (subtitle) files, but it does pick up other,
# possibly desired, extensions, such as nfo and sub. Be congnizant of that 
# when you look at your results. This does expect that your shows are labeled
# using a folder for the show, and within there, individual folders for each
# season (the naming scheme of those shouldn't matter), and that your
# episodes use the "Showname - SXXEXX - Episodename" format.
# (e.g. Star Trek/Star Trek - Season 1/Star Trek - S01E01 - The Man Trap.avi)

shopt -s nullglob

TVDIR=${TVDIR:-"/share/TV/ongoing/TV Shows"}

echo -e "\nChecking in ======  $TVDIR  ====== directory\n"

# Loop through all directories in $TVDIR
for SERIES in "$TVDIR/"*; do
  # Store the name in $SERIES
  SERIES=$(basename "$SERIES")
  # Loop through all seasons within a series
  for SEASON in "$TVDIR/$SERIES/"*; do
    # Store the season folder in $SEASON
    SEASON=$(basename "$SEASON")
    # Loop through all the episodes within a season folder
    for FIRST in "$TVDIR/$SERIES/$SEASON/"*; do
      # Store the episode's filename
      FIRST=$(basename "$FIRST")
      # Skip common subtitle filetypes to prevent false positives
      if [[ ! ${FIRST##*.} =~ ^(mpl|srt|ssa|sub)$ ]]; then
        # Get the SXXEXX designator
        CUR_EP=$(echo "$FIRST" | awk -F' - ' '{print $2}')
        # Rudimentary progress indicator
	printf "."
        # If the $CUR_EP variable doesn't contain SXXEXX (typically because there's dashes
        # in the show name), run an until loop and work through the sections with awk
        if [[ $CUR_EP != S[0-9]*E[0-9]* ]]; then
          COUNT=0
	  REGEX="(S[0-9]*E[0-9]*)"
	  until [[ $CUR_EP =~ $REGEX ]]; do
	    ((COUNT++))
	    CUR_EP=$(echo "$FIRST" | awk -F' - ' -v COUNT="$COUNT" '{print $COUNT}')
	    # If it checks 5 fields in the filename and doesn't find SXXEXX, assume the
	    # file isn't an episode and exit the loop
	    if [[ $COUNT == 5 ]]; then break; fi
	  done
	fi
	# If $CUR_EP exists and equals the $PRE_EP, echo the names of the shows and what matched
        if [[ -n $CUR_EP && "$CUR_EP" == $PRE_EP ]]; then
          printf "\n"
          echo Repeat: $SERIES/$SEASON/$FIRST
          echo Repeat: $SERIES/$SEASON/$SECOND
          echo $CUR_EP "==" $PRE_EP
        fi
	# Store the previous episode filename (and location)
        SECOND=$FIRST
	# Store the previous episode designator
        PRE_EP=$CUR_EP
      fi
    done
  # Clear these out when moving to another season to prevent false positives
  SECOND=''
  PRE_EP=''
  done
done
# Add a new line so the prompt comes back on its own line
printf "\n"