#!/bin/bash

set -e

function get_repo_online {
	yum reinstall -y --downloadonly --downloaddir=repo `cat list`
}

function get_repo_dvd {
	mkdir repo
	for i in `cat list`
	do
		package=`find iso | grep $i | cut -d'/' -f4 | grep ^$i-[1234567890]`
		cp iso/Packages/*/$i repo
	done
}

function makejail {
	if [ ! -e list ]
	then
		echo "Run \`makelist\` first."
		exit
	fi

	echo "
Two sources for the required packages are available:

  1. Online Fedora repositories (default) (Internet required, 50~80MB will be downloaded)
       note: if you want to use local repositories, follow the steps required to add them
             to yum repositories at /etc/yum.repos.d/

  2. Use an already downloaded Fedora iso or mounted DVD (arch doesn't matter).

  3. Use a single folder containing required packages.
       note: if some packages are missing or outdated, we'll automatically download them
             from Fedora repositories.
	"

	read -p "Which method? (1/2/3/q) (default: 1) " ask

	if [[ ( $ask == 1 || -z $ask ]]
	then
		echo "Online method chosen ..."
		method="online"
	elif [[ $ask == 2 ]]
	then
		echo "DVD method chosen ..."
		method="dvd"
		read -p "Where is the DVD/iso mounted?" src
		if [[ -d $src ]]
		then
			if [[ $src != "iso" ]]
			then
				ln -s $i iso
			fi
		else
			echo "error: cannot access $src: No such directory"
			exit
		fi
	elif [[ $ask == 3 ]]
	then
		echo "Local method chosen ..."
		method="online"	# this is NOT a bug.
		read -p "Where are the packages?" src
		if [[ -d $src ]]
		then
			if [[ $src != "repo" ]]
			then
				ln -s $i repo
			fi
		else
			echo "error: cannot access $src: No such directory"
			exit
		fi
	elif [[ $ask == "q" ]]
	then
		exit
	else
		echo "error: couldn't detect your choice!"
		echo
		makejail $@
		exit
	fi


	get_repo_$method

	cd root

	for i in `ls ../repo`
	do
		rpm2cpio ../repo/$i | cpio -idm
	done

	echo "Removing a couple of files that are useless for all intents and purposes of a jail ..."
	rm -rf usr/lib/locale usr/share/{cracklib,doc,i18n,info,locale,man,zoneinfo}

	echo "Starting to reset SELinux contexts of the chroot environment ..."
	setfiles -p -r . /etc/selinux/targeted/contexts/files/file_contexts .

	cd ..
	echo "done"
}

makejail $@