#!/bin/bash
globina=${3:-3}
globina=$3
files=0
dirs=0
link=0
socket=0
pipe=0
block=0
depthCounter=0
char=0

function pomoc {
	printf "uporaba skripte: ./Naloga2.sh akcija imenik globina\n akcije: drevo, stej, prostor\n"
}

function tree {
	depth=$2
	fileName=""
	for i in `$1/*`
	do
		fileName="${i##*/}"
		if (($depthCounter != 0))
		then
			for i in $(seq 1 1 $depth)
			do
				printf "----"
			done
		fi
		if [ -d $i ];
		then
			printf "DIR   $fileName $depth\n"
			if (($depth > 1))
			then
				((depth = depth - 1))
				((depthCounter = depthCounter + 1))
				tree $i $depth
			fi
		fi
		if [ -f $i ];
		then
			printf "FILE  $fileName\n"
		fi
		if [ -L $i ];
		then
			printf "LINK  $fileName\n"
		fi
		if [ -p $i ];
		then
			printf "PIPE  $fileName\n"
		fi
		if [ -S $i ];
		then
			printf "SOCK  $fileName\n"
		fi
		if [ -c $i ];
		then
			printf "CHAR  $fileName\n"
		fi
		if [ -b $i ];
		then
			printf "BLOCK $fileName\n"
		fi
	done
}

function count {
	givenDir=$1
	depth=$2
	for i in `$1/*`
	do
		if [ -d $i ]
		then
			((dirs = dirs + 1))
			((depth = depth - 1))
			count $i $depth
		fi
		if [ -c $i ]
		then
			((char = char + 1))
		fi
		if [ -L $i ]
		then
			((link = link + 1))
		fi
		if [ -f $i ]
		then
			(($files = $files + 1))
		fi
		if [ -b $i ]
		then
			((block = block + 1))
		fi
		if [ -p $i ]
		then
			((pipe = pipe + 1))
		fi
		if [ -S $i ]
		then
			((socket = socket + 1))
		fi
	done
	printf "File: $files\nDir: $dirs\nLink: $link\nChar: $char\nBlock: $block\nPipe: $pipe\nSocket: $socket"
	}

function size {
	givenPath=$1
	cd $givenPath
	size=`du`
	size2=${size:0:-2}
	printf "$size2\n"
}

case $1 in
	"drevo" )
		tree $2
	;;
	"stej" )
		count $2 $globina
	;;
	"prostor" )
		size $2
	;;
	"pomoc" )
		pomoc
	;;
	*)
		pomoc
		exit 42
	;;
esac