#!/bin/bash
#
# Author: Georg Voell - georg.voell@standby.cloud
# Version: @(#)filecheck 3.1.0 05.06.2023 (c)2023 Standby.cloud
# Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl/
#
# This script can be used free of charge. Use it as is or customize as needed. It is not guaranteed to be
# error free and you will not be reimbursed for any damage it may cause.
#
#@  Do some actions with files.
#@
#@Usage: filecheck [options] filename
#@  Options:
#@    -h, --help   : Displays helptext.
#@    -v, --version: Displays the version of the script.
#@    -x           : Test if filename is executable. If filename can't be found, try to find it in path.
#@    -f           : Test if filename exists.
#@    -d           : Test if filename is a directory.
#@    -z           : Test if filename is a zip file and not corrupt.
#@    -s           : Test if filename exists and is not empty.
#@    -sl          : Test if filename exists and has more than 1 line.
#@    -rm          : Test if filename exists and then remove it.
#@    -fc          : Test if filename was created no longer than 179 minutes ago.
#@    -fmax        : Test if filename was modified no longer than 29 minutes ago.
#@    -fmin        : Test if filename was modified no longer than 15 minutes ago.
#@  Filename: Name of file to test.
#
# Update history:
#
# V 1.0.0 26.10.2017 New version
# V 1.0.1 15.07.2018 More options
# V 2.0.0 09.07.2019 Also look for executable files in $HOME/bin
# V 3.0.0 27.04.2020 Renamed script from filetest to filecheck (filetest is a build in cmd)
# V 3.0.1 19.05.2020 Return "./$file" if $file is in local dir
# V 3.0.2 11.06.2020 Using library
# V 3.1.0 05.06.2023 New copyright
#

script=${0}						# Name of this script
progstr=`basename "$script"`	# Basename of the script
progdir=`dirname "$script"`		# Dirname of the script

# Find executable bash library and source it
lib=`which lib.bash 2>/dev/null | sed 's|^no 'lib.bash' in .*||'`
if [ "$lib" != "" ]; then
	source "$lib"
else
	if [ -r "${progdir}/lib.bash" ]; then
		source "${progdir}/lib.bash"
	else
		echo "Unexpected error: Unable to locate bash library 'lib.bash'."
		exit 1
	fi
fi

# Set PATH to something useful
if [ "$WORKPATH" != "" ]; then
	PATH="$WORKPATH"
fi

# Preset
filnam=""
option=""

# Check parameters: Loop until all parameters are used up
while [ $# -gt 0 ]; do
	pname=${1}
	case "$pname" in
		-v | --version)
			shift
			showversion=1
			;;
		-h | --help)
			shift
			showhelp=1
			;;
		*)
			paramck=`echo "$1" | grep '^-'` # Types don't begin with '-'
			if [ "$filnam" = "" -a "$paramck" = "" ]; then
				filnam=${1}
			else
				option=${1}
			fi
			shift
	esac
done

# Plausibility check
if [ "$option" = "" -o "$filnam" = "" ]; then
	errstr="Please specify an option and a filename e.g. '$progstr -x yum'"
fi

# Display help or error message
DisplayHelp

case "$option" in
	-x) if [ -f "$filnam" -a -x "$filnam" ]; then
			# We have to check if it is a file first - otherwise it may is a directory
			dname=`dirname "$filnam"`
			if [ "$dname" = "." ]; then
				dname=`pwd`
				bname=`basename "$filnam"`
				echo "${dname}/$bname"
			else
				echo "$filnam"
			fi
		else
			# '2>/dev/null' needed for Linux, sed needed for Solaris 10
			resstr=`which "$filnam" 2>/dev/null | sed 's|^no '$filnam' in .*||'`
			if [ "$resstr" != "" ]; then
				echo "$resstr"
			fi
		fi ;;

	-f) if [ -f "$filnam" ]; then
			echo "$filnam"
		fi ;;
	-d) if [ -d "$filnam" ]; then
			echo "$filnam"
		fi ;;

	-z) if [ -f "$filnam" ]; then
			unzip=`which unzip 2>/dev/null | sed 's|^no '$filnam' in .*||'`
			if [ "$unzip" != "" ]; then
				$unzip -t "$filnam" >/dev/null 2>&1
				stat=$?
				
				if [ $stat -eq 0 ]; then
					echo "$filnam"
				fi
			fi
		fi ;;

	-s) if [ -f "$filnam" ]; then
			# We have to test this with 'wc' because -s option won't work on Solaris or Ubuntu
			resstr=`wc -c "$filnam"`
			fresult=`echo $resstr | cut -d' ' -f1`
			if [ $fresult -gt 0 ]; then
				echo "$filnam"
			fi
		fi ;;
	-sl) if [ -f "$filnam" ]; then
			resstr=`wc -l "$filnam"`
			fresult=`echo $resstr | cut -d' ' -f1`
			if [ $fresult -gt 1 ]; then
				echo "$filnam"
			fi
		fi ;;

	-rm) if [ -f "$filnam" ]; then
			rm -f "$filnam"
		fi ;;

 	# amin = access tine, mmin = modification time, cmin = change time, Bmin = Creation time (inode creation)

	-fc) if [ "$OS" = "Darwin" ]; then
			resstr=`find "$filnam" -type f -Bmin -179 2> /dev/null`
		else
			# assuming that noatime is set for disk -> then we get creation date in atime
			resstr=`find "$filnam" -type f -amin -179 2> /dev/null`
		fi

		if [ "$resstr" != "" ]; then
			echo "$filnam"
		fi ;;
	-fmax) resstr=`find "$filnam" -type f -mmin -29 2> /dev/null`
		if [ "$resstr" != "" ]; then
			echo "$filnam"
		fi ;;
	-fmin) resstr=`find "$filnam" -type f -mmin -15 2> /dev/null`
		if [ "$resstr" != "" ]; then
			echo "$filnam"
		fi ;;

	*) errormsg 1 "($progstr) Invalid option '$option'."
		exit 1 ;;
esac

exit $exitcode