#!/bin/bash

# This script is for use on the machine where the nightly Expeditee binaries are to be 
# uploaded. Put this script in the same folder as the uploads are meant to go.
# When any binary's log *.out file is being uploaded via secure shell (which is fast), 
# this script's called. The invocation of this script should go into .ssh/authorizedkeys.
# Then this script will delete all other log and binary files in this folder for the same
# os-release that are not of the current date (in case it's the uploaded file itself). 
# The code didn't work if the binary was processed independent of the log file, since the 
# bin's filename (and hence target os) could not be determined as it was still being 
# uploaded.

origdir=`pwd`

# default binary directory to where this script lives, then go there
# http://stackoverflow.com/questions/59895/can-a-bash-script-tell-what-directory-its-stored-in
bindir=`dirname "$0"` #dirname "$(readlink -f "$0")"
pushd $bindir

# http://stackoverflow.com/questions/1401482/yyyy-mm-dd-format-date-in-shell-script
date=`date +%Y-%m-%d`

# code from Puka
# the file uploaded is the one with the latest timestamp
# ls -rt lists files by time, then get the last one
# the file pattern looks for rke-currentdate-<OS>.out files
#incoming_file=$1
incoming_file=`ls -rt rke-*$date*.out 2>/dev/null | tail -n 1`
#echo "Incoming file: $incoming_file" >> out.txt

# http://stackoverflow.com/questions/21620406/how-do-i-pause-my-shell-script-for-1-second-before-continuing
#sleep 2m

# arrays
# make sure -linux64 comes before linux, because we'll be matching against these 
# strings, so need the longest strings to be matched first.
rke_suffix=("-linux64" "-linux" "-windows" "-mac-MountainLion")
os_substr=("-linux64" "-linux" "-windows" "-MountainLion")
#bin_suffix=("-linux64" "-linux" "-windows.exe" "-MacOS-intel-MountainLion.dmg")

# http://stackoverflow.com/questions/2172352/in-bash-how-can-i-check-if-a-string-begins-with-some-value
# http://stackoverflow.com/questions/229551/string-contains-in-bash
rke_file_pattern=
if [[ $incoming_file == "rke-"* ]] ; then
    for suffix in ${rke_suffix[@]}; do
	if [[ $incoming_file == *"$suffix"* ]]; then
	    rke_file_pattern="rke-*${suffix}.out"
	    break
	fi
    done

    # ONE WAY:
    #echo "found $rke_file_pattern"
    # -f to make it silent: will also be silent if there's nothing to rm
    #rm -f $rke_file_pattern

    # OR:
    # get rid of all files of the pattern that are not of the current date 
    # http://stackoverflow.com/questions/10981439/reading-filenames-into-an-array
    
    # setting for fileglobbing: 
    # for using wildcards to get matching files on filesystem into array
    # "The nullglob option causes the array to be empty if there are no matched."
    # http://stackoverflow.com/questions/10981439/reading-filenames-into-an-array
    # See shopt command at http://www.gnu.org/software/bash/manual/html_node/The-Shopt-Builtin.html
    shopt -s nullglob

    files=($rke_file_pattern)
    for file in ${files[@]}; do
	# set nullglob earlier, so won't be here if there's no file that matched
	if [[ $file != "rke-$date${suffix}.out" ]]; then
	    rm -rf $file
	fi
    done

    shopt -u nullglob

    # We now know the OS for the binary associated with the rke log 
    # that's being uploaded too. Delete all bins for this OS except
    # any with the current date.

    bin_file_pattern=
    # binaries start with "Expeditee-1-"
    for os_str in ${os_substr[@]}; do
	if [[ $incoming_file == *"$os_str"* ]]; then
	    bin_file_pattern="Expeditee-1-*$os_str*"
	    break
	fi
    done
    
    # ONE WAY:
    #echo "found $bin_file_pattern"
    # -f to make it silent: will also be silent if there's nothing to rm
    #rm -rf $bin_file_pattern
    
    # OR:
    # get rid of all files of the pattern that are not of the current date
    # http://stackoverflow.com/questions/10981439/reading-filenames-into-an-array
    shopt -s nullglob
    files=($bin_file_pattern)
    for file in ${files[@]}; do
	# set nullglob earlier, so won't be here if there's no file that matched
	if [[ $file != *"$date"* ]] || [[ $file != *"$os_str"* ]]; then
	    echo "$file"	    
	    rm -rf $file
	fi
    done
    shopt -u nullglob
fi


# clean up ._Expeditee-1-YYYY-MM-DD-MacOS-intel-MountainLion.dmg temp files
#ls -la "._Expeditee*dmg"
rm -rf "._Expeditee*dmg"

popd