#!/bin/bash
# Linux Live Kit version 7

export PATH=.:./tools:../tools:/usr/sbin:/usr/bin:/sbin:/bin:/

CHANGEDIR=$(dirname $(readlink -f $0))
echo "Changing current directory to $CHANGEDIR"
CWD="$(pwd)"
cd $CHANGEDIR

. ./.config || exit 1
. ./livekitlib || exit 1

# only root can continue, because only root can read all files from your system
allow_only_root

# check for mksquashfs with xz compression
if [ "$(mksquashfs 2>&1 | grep "Xdict-size")" = "" ]; then
   echo "mksquashfs not found or doesn't support -comp xz, aborting, no changes made"
   exit 1
fi

# build initramfs image
echo "Building intramfs image..."
cd initramfs
INITRAMFS=$(./initramfs_create "$LIVEKITNAME")
cd ..

# create live kit filesystem (cpio archive)
rm -Rf "$LIVEKITDATA"
BOOT="$LIVEKITDATA"/"$LIVEKITNAME"/boot
mkdir -p "$BOOT"
mkdir -p "$BOOT"/../changes
mv "$INITRAMFS" $BOOT/initrfs.img
cp bootfiles/* $BOOT
cat bootfiles/syslinux.cfg | sed -r "s:/boot/:/$LIVEKITNAME/boot/:" > $BOOT/syslinux.cfg
cat bootfiles/bootinst.bat | sed -r "s:/boot/:/$LIVEKITNAME/boot/:" | sed -r "s:\\\\boot\\\\:\\\\$LIVEKITNAME\\\\boot\\\\:" > $BOOT/bootinst.bat
cp $VMLINUZ $BOOT/

if [ -d sb ]; then
   cp sb/* $LIVEKITDATA/$LIVEKITNAME/
else
   # create compressed bundles
   for i in $MKMOD; do
      mksquashfs /$i $LIVEKITDATA/$LIVEKITNAME/$i.$BEXT -comp xz -b 512k -keep-as-directory
   done
fi

# copy rootcopy folder
if [ -d rootcopy ]; then
   cp -a rootcopy $LIVEKITDATA/$LIVEKITNAME/
fi

# create ISO for CD image
echo "Creating ISO file for CD boot..."
cd "$LIVEKITDATA"
TARGET=/mnt/z
if [ ! -d $TARGET ]; then
   TARGET=/tmp
fi

ARCH=$(uname -m)

mkisofs -o "$TARGET/$LIVEKITNAME-$ARCH.iso" -v -J -R -D -A "$LIVEKITNAME" -V "$LIVEKITNAME" \
-no-emul-boot -boot-info-table -boot-load-size 4 \
-b "$LIVEKITNAME"/boot/isolinux.bin -c "$LIVEKITNAME"/boot/isolinux.boot . \
>/dev/null 2>/dev/null

cat "$CWD/bootinfo.txt" | fgrep -v "#" | sed -r "s/mylinux/$LIVEKITNAME/" | sed -r "s/\$/
/" > readme.txt
echo "Creating ZIP for USB boot..."
rm -f "$TARGET/$LIVEKITNAME-$ARCH.zip"
zip -0 -r "$TARGET/$LIVEKITNAME-$ARCH.zip" *

cd ..
rm -Rf "$LIVEKITDATA"
echo "finished. Find your result in $TARGET"