#!/bin/bash

#    DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
#                    Version 2, December 2004
#
# Copyright (C) 2004 Sam Hocevar
#  14 rue de Plaisance, 75014 Paris, France
# Everyone is permitted to copy and distribute verbatim or modified
# copies of this license document, and changing it is allowed as long
# as the name is changed.
#
#            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
#   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
#
#  0. You just DO WHAT THE FUCK YOU WANT TO. 

#Original work by http://sov.localhostz.org || Feel free to report bugs/comments/suggestion at sov[AT]localhostz[DOT]org

readonly wd=~/.clili

readonly STDERR=/dev/stderr

show()
{
	local lorem=$1
	if ! test -r $wd/$lorem
	then
		error 1 $lorem;
	else
		cat $wd/$lorem;
	fi
}

list()
{
	ls $wd;
}

add()
{
	local toadd=$1
	local name=${2:-$1}
	
	if ! test -r $toadd
	then
		error 1 $toadd;
	elif test -d $toadd
	then
		error 6 $toadd;
	elif ! test -w $wd
	then
		error 2 $wd;
	elif test -e $wd/$name
	then
		error 3 $name;	
	else
		cp $toadd $wd/$name;
		#echo "Successfully added file $toadd as $name"; # Useless verbose
	fi
}

edit()
{
	local toedit=$1
	
	if ! test -r $wd/$toedit
	then
		error 1 $toedit;
	elif ! test -w $wd/$toedit
	then
		error 3 $toedit;
	else
		${EDITOR:-vi} $wd/$toedit;
	fi
}

remove()
{
	local toremove=$@
	
	if ! test -w $wd
	then
		error 2 $wd;
	fi

	if test $toremove == "all"
	then
		remove_all;
	else
		for file in $toremove
		do
			if ! test -w $wd/$file
			then
				echo "Warning : $file is not writable or does not exists. Skipping." > $STDERR;
			else
				rm $wd/$file; # && echo "$file successfully deleted."; # Useless verbose
			fi
		done
	fi
}

remove_all()
{
	echo -n "Remove all files in your $wd directory ? [y/n]";
	read yesno;
	case $yesno in
		y|Y) rm $wd/* && echo "$wd directory successfully cleaned." && exit;;
		n|N) echo "no file have been removed." && exit;;
		*) remove_all;;
	esac
}

##############

error()
{
	local errorcode=$1
	local file=$2
	
	case $errorcode in
		1) local error="$file is not readable or does not exists." ;;
		2) local error="$file is not writable or does not exists." ;;
		3) local error="$file already exists." ;;
		4) local error="no operation specified." ;;
		5) local error="too many arguments." ;;
		6) local error="$file is a directory.";;
		*) local error="unknwon error. Please reboot your computer." ;;
	esac
	
	echo "ERROR: ${error}" > $STDERR && exit $errorcode
}



help()
{
	echo "clili (command line lorem ipsum)";
	echo "USAGE :";
	echo "% clili 'text' : print the content of file 'text' in your directory on STDOUT.";
	echo "% clili add 'file' 'name' : add 'file' in your directory with name 'name' if given.";
	echo "% clili list : list your texts directory.";
	echo "% clili remove 'text' : remove file 'text' from your directory. You can specify as much file as you want.";
	echo "% clili edit 'text' : edit the file 'text' from your directory." 
	echo "% clili help : print this help dialog."
}

#################

if ! test -d $wd
then
	mkdir $wd;
#	echo "WARNING : Your $wd directory is empty"; # Useless verbose.
fi

if test $# == 0
then
	error 4;
elif test $# == 1
then
	if test $1 == "list"
	then
		list;
	elif test $1 == "help"
	then
		help;
	else	
		show $1;
	fi
else
	case $1 in
		edit) if test $# -gt 2; then error 5; else edit $2; fi;;
		add) if test $# -gt 3; then error 5; else add $2 ${3:-$2}; fi;;
		remove) shift; remove $@;;
	esac
fi

exit 0