#!/usr/bin/env bash

#Sac Peak Solar Observatory
# EXAMPLES:
#
# run on only one year in test mode
# ./kh_rename 1980 1980 test | less
#
# run on only one year in actual move mode
# ./sacp_rename 1980 1980

#NEW COMMENT
#
# run several years in test mode
# ./sacp_rename 1980 2010 test | less
#
# run several years in actual move mode
# ./sacp_rename 1947 2004
#
#This script will rename files from 19990101_sp.pdf to sacp_drawx_fd_19990101_xxxx.pdf
#Years of data are 1947 - 2004
#Where there exists spb or spc after the date, open drawing and input actual time, if b or c don't exist then #input xxxx for time


debug=0
start_year=1947
stop_year=2004
cwd=`pwd`

if [ -z "$1" ]; then
        echo "ERROR: no start year specified"
        echo "This script expects to be run from a top level directory, with folders of the form YYYY/MM below it"
        echo "USAGE: ${0} <start_year> <stop_year>"
        echo "EXAMPLE: ${0} 1980 1982"
fi

if [ -z "$2" ]; then
        echo "ERROR: no stop year specified"
        echo "This script expects to be run from a top level directory, with folders of the form YYYY/MM below it"
        echo "USAGE: ${0} <start_year> <stop_year>"
        echo "EXAMPLE: ${0} 1980 1982"
fi

if [ ! -z "${3}" ]; then
        debug=1
fi

start_year="${1}"
stop_year="${2}"

for yr in `seq ${start_year} ${stop_year}`

do
        for mo in `seq -w 01 12`
        do
                path="${yr}/${mo}"
                cd ${path}
                if [ "`echo *.pdf`" != "*.pdf" ]
                then
                   for file in *.pdf
                   do
                           f1="`echo $file | sed 's/_/ /g' | awk '{print $1}'`"
                           if [[ "${file}" =~ "sacp.*" ]]
                           then
                           :
                           else
			      numfiles="`echo *${f1}* | wc -w`"
                              if [ $numfiles -gt 1 ]
                              then
                                 f2="`echo ${file} | sed 's/.pdf//g'`"
                                 mv ${file} sacp_drawx_fd_${f2}_xxxx.pdf
                              else
                                 f2="sacp_drawx_fd_${f1}_xxxx.pdf"
                                 mv ${file} ${f2}
                              fi
                           fi
                   done
                   fi
                cd ../..
	done
done