#!/bin/bash

set -e
set -o pipefail # Bashism

parrot_mirror=https://deb.parrot.sh/parrot

# Detect target architecture and filter args
if [ ! $arch ]; then
	arch=$(dpkg --print-architecture)
fi
if [ ! $variant ]; then
	variant="home"
fi
dist="rolling"
lb_opts=""
while [ $# -gt 0 ]; do
   	arg="$1"
	case "$arg" in
        -a|--arch|--architecture|--architectures)
		arch="$2"
		temp="$temp "'"'"$arg"'"'
		temp="$temp "'"'"$2"'"'
		shift
		;;
	--distribution)
		dist="$2"
		shift
		;;
	--variant)
		variant="$2"
		shift
		;;
	-p|--proposed-updates)
		enable_pu="1"
		;;
	--)
		;;
	*)
		temp="$temp "'"'"$arg"'"'
		;;
	esac
	shift
done
eval set -- "$temp"

if [ ! -e ${LIVE_BUILD:-/usr/share/live/build}/data/debian-cd/$dist ]; then
	if [ -w ${LIVE_BUILD:-/usr/share/live/build}/data/debian-cd ]; then
		ln -sf sid ${LIVE_BUILD:-/usr/share/live/build}/data/debian-cd/$dist
	else
		echo "ERROR: Run this first:"
		echo "ln -sf sid ${LIVE_BUILD:-/usr/share/live/build}/data/debian-cd/$dist"
		exit 1
	fi
fi

case "$arch" in
    amd64)
	lb_opts="$lb_opts --binary-images iso-hybrid --architecture amd64 --debian-installer live --linux-flavours amd64"
    ;;
    i386)
	lb_opts="$lb_opts --binary-images iso-hybrid --architecture i386 --debian-installer live --linux-flavours 686-pae"
    ;;
    486)
	lb_opts="$lb_opts --binary-images iso-hybrid --architecture i386 --debian-installer live --linux-flavours 486"
    ;;
    armel|armhf|arm64)
	lb_opts="$lb_opts --binary-images hdd --binary-filesystem ext4 --chroot-filesystem none"
    ;;
    *)
	echo "WARNING: configuration not tested on arch $arch" >&2
    ;;
esac

# Setup configuration files from variant and options

# Drop all files that a former run might have put into place
for file in $(cd config && find . -type f); do
    file=${file#./*/}
    rm -f config/$file || true
done

cp -rT templates/common config
[ ! -d templates/parrot-$variant ] || cp -rTL templates/parrot-$variant config

[ ! $arch ] || sed -i "s/ISO_ARCH/$arch/g" config/includes.binary/isolinux/menu.cfg
[ ! $arch ] || sed -i "s/ISO_ARCH/$arch/g" config/includes.binary/boot/grub/live-theme/theme.txt
[ ! $version ] || sed -i "s/ISO_VERSION/$version/g" config/includes.binary/isolinux/menu.cfg
[ ! $version ] || sed -i "s/ISO_VERSION/$version/g" config/includes.binary/boot/grub/live-theme/theme.txt
[ ! $variant ] || sed -i "s/ISO_TITLE/Parrot $variant/g" config/includes.binary/isolinux/menu.cfg
[ ! $variant ] || sed -i "s/ISO_TITLE/Parrot $variant/g" config/includes.binary/boot/grub/live-theme/theme.txt

lb config noauto \
	--distribution "$dist" \
	--debian-installer-distribution "$dist" \
	--archive-areas "main contrib non-free" \
	--debootstrap-options "--include=ca-certificates,parrot-archive-keyring,gnupg --keyring=templates/common/archives/parrot.key" \
	--keyring-packages parrot-archive-keyring \
	--updates false \
	--security false \
	--backports false \
	--firmware-binary false \
	--firmware-chroot false \
	--compression xz \
	--mirror-bootstrap "$parrot_mirror" \
	--mirror-chroot "$parrot_mirror" \
	--mirror-debian-installer "$parrot_mirror" \
	--mirror-binary "$public_mirror" \
	--iso-application "Parrot" \
	--iso-publisher "Parrot Project" \
	--iso-volume "Parrot $variant" \
	--linux-packages linux-image \
	--bootappend-live "boot=live hostname=parrot splash noautomount" \
	--source false \
	$lb_opts \
	"$@"

#use overlay instead of aufs as union filesystem support for squashfs
sed -i "s/LB_UNION_FILESYSTEM=\"aufs\"/LB_UNION_FILESYSTEM=\"overlay\"/g" config/chroot