mkbuild

#!/bin/bash
#
#    Copyright (C) 2018 I Sagar <sagar@hamaralinux.org>
#
#    This program is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program; if not, write to the Free Software
#    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 U$
#


#Adding a seconds variable to  display  time taken by the build
#Inbuilt variable available with bash, initialized to zero
SECONDS=0
DATE=`date +%Y%m%d`

Info () {
    echo "I: ${*}" >&2
}

Error () {
    echo "E: ${*}" >&2
}


SETUP(){
	clear
	figlet SETUP
	
	cd $DIR
	
	for PKG in apt-cacher-ng debootstrap live-build figlet
	do
		dpkg -s $PKG &> /dev/null
		if [ $? -eq 1 ];then
			apt-get install -y $PKG
		fi
	done

	#Copying live build scripts
	if [ $RELEASE == "hamara-sugam" ]
	then
		cp -rv data/hamara-sugam/lb_scripts/*  /usr/lib/live/build/
		echo " [Done]  Copying scripts for Hamara Sugam "
	else
		cp -rv data/hamara/lb_scripts/*  /usr/lib/live/build/
		echo " [Done]  Copying scripts  for hamara"
	fi

	Info "Replacing bootloader config files"
	rm -rf /usr/share/live/build/bootloaders
	cp -r data/$RELEASE/bootloaders /usr/share/live/build

	if [ $RELEASE == "hamara-sugam" ]; then
		ln -sf /usr/share/live/build/data/debian-cd/squeeze /usr/share/live/build/data/debian-cd/namaste
		ln -sf /usr/share/debootstrap/scripts/sid /usr/share/debootstrap/scripts/namaste
	else
		ln -sf /usr/share/live/build/data/debian-cd/squeeze /usr/share/live/build/data/debian-cd/svastik
		ln -sf /usr/share/debootstrap/scripts/sid /usr/share/debootstrap/scripts/svastik
	fi
}

CLEAN(){
	figlet CLEAN
	if [ -d "$DIR/build_area/$RELEASE-$ARCH" ]; then
		Info "Change to target directory"
		cd $DIR/build_area/$RELEASE-$ARCH
		echo "#################################################"
		Info "   Cleaning build files of $ARCH architecture   "
		echo "#################################################"
		lb clean
	else
		Info "[Skipped] Build area not present for $ARCH architecture "
	fi
}

BUILD(){
	figlet BUILD
	Info "Creating build directory"

	mkdir -p $DIR/build_area/$RELEASE-$ARCH

	Info "Changing to build directory"
	cd $DIR/build_area/$RELEASE-$ARCH

	Info "Copying config files"
	. $DIR/$RELEASE.conf
	cp -rv $DIR/config.d/$RELEASE/config/* $DIR/build_area/$RELEASE-$ARCH/config/

	if [ $ARCH == i386 ] ;then
		Info "Copy installer files for i386 arch and set kernel flavour"
		cp -r $DIR/data/includes/* $DIR/build_area/$RELEASE-$ARCH/config/includes.installer/
		lb config --linux-flavours 686-pae
	fi

	figlet STARTING BUILD
	lb build
	
	if [ $? -eq 0 ];then
		Info " ISO Build successfully for $ARCH architecture "
		Info "Renaming the ISO"
		mv *.hybrid.iso "$RELEASE"-live-"$VER"-"$ARCH".iso
		Info "Calculating sha1sum"
		for i in 1 256 512
		do
			echo "Generating SHA"$i"SUM"
			for j in *.iso  *.contents *.packages
			do
				sha"$i"sum $j >> SHA"$i"SUMS
			done
		done
		Info "Create output directory"
		mkdir -p $DIR/output/$RELEASE-$ARCH-$DATE
		for i in *.iso  *.contents *.packages  *SUMS
		do
			mv -v $i $DIR/output/$RELEASE-$ARCH-$DATE
		done
		
		duration=$SECONDS
		Info " Build completed in $(($duration / 60)) minutes and $(($duration % 60)) seconds "
		echo " ----  Now, test your ISO  ---- "
		echo " Tip :  Make bootable USB stick with Etcher "
		echo " [Link] https://etcher.io/ "
		else
		  Error " [Failed] Try again. "
	fi
}

HELP(){
	echo "############################################"
	echo "#                    HELP                  #"
	echo "############################################"
	echo " Uses live-build ver. ~ 5.0 "
	echo " "
	echo "* Options         :"
	echo "     help              --   displays current screen "
	echo "     iso               --   builds ISO "
	echo "     clean             --   cleans building area "
	echo "     purge             --   removes cache directory after cleaning building area "
	echo " "
	echo "* Usage example   :"
	echo "     Build ISO         --   ./mkbuild iso ARCH MIRROR RELEASE VERSION"
	echo "     Clean build area  --   ./mkbuild clean ARCH RELEASE "
	echo "     Purge build area  --   ./mkbuild purge ARCH RELEASE "
	echo " "
	echo "* Parameters      :"
	echo "     ARCH              --   amd64 | i386 | all"
	echo "     MIRROR            --   devel.hamaralinux.org | in.devel.hamaralinux.org "
	echo "     RELEASE           --   hamara | hamara-sugam "
	echo "     VERSION           --   alpha | beta | final  "
	echo " "
	echo "* For more info. "
	echo "     man ./HELP "
}

DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
cd $DIR
if [ "$EUID" -ne 0 ]
	then
	Info " --->  Please run as root <--- "
	echo "man ./HELP for more info"
	exit
fi

case $1 in
help)
	HELP
	;;
iso)
	if [[ "$#" -eq 5 ]] && [[ "$2" = @(amd64|i386|all) ]] && [[ "$3" = @(in.devel.hamaralinux.org|devel.hamaralinux.org) ]] && [[ "$4" = @(minimal|hamara|hamara-sugam) ]] && [[ "$5" = @(pre-alpha|alpha|beta|final) ]]
	then
		export ARCH=$2
		export MIRROR=$3
		export RELEASE=$4
		export VER=2.0-$5
	else
		Error "XXX-< Invalid parameters >-XXX"
		HELP
		exit 1
	fi
	#check ARCH variable
	if [[ "$ARCH" = "all" ]]
	then
	#Do setup common for both arch
		SETUP
		for ARCH in amd64 i386
		do
			CLEAN
			BUILD
		done
	else
		SETUP
		CLEAN
		BUILD
	fi
 	;;

clean)
	if [[ "$#" -eq 3  ]] && [[ "$2" = @(amd64|i386|all) ]] && [[ "$3" = @(minimal|hamara|hamara-sugam) ]]
	then
		ARCH=$2
		RELEASE=$3
		if [[ "$ARCH" = "all" ]]
		then
			for ARCH in amd64 i386
			do
				CLEAN
			done
		else
			CLEAN
		fi
	else
		Error " !!! Invalid option !!!"
		echo  "Valid Usage -  ./mkbuild clean ARCH RELEASE "
		HELP
	fi
	;;

purge)
	if [[ "$#" -eq 3  ]] && [[ "$2" = @(amd64|i386|all) ]] && [[ "$3" = @(minimal|hamara|hamara-sugam) ]]
	then
		ARCH=$2
		RELEASE=$3
		if [[ "$ARCH" = "all" ]]
		then
			for ARCH in amd64 i386
			do
				CLEAN
				rm -rf $DIR/build_area/$RELEASE-$ARCH && Info "--- Removing build area ---"
			done
		else
			CLEAN
			rm -rf $DIR/build_area/$RELEASE-$ARCH && Info "--- Removing build area ---"
		fi
	else
		Error "XX-< Invalid option >-XX"
		HELP
	fi
	;;

*)
	HELP
	;;

esac