#!/bin/sh

set -e

#extract the version of the compiled busybox :)
busybox_ver="$(find  ./src/ -type d -maxdepth 1 -name "busy*" | cut -d- -f2)"

mkdir initrd
cd initrd
	
mkdir -p bin dev proc sys etc usr

#Add busybox programs
	cd bin
		cp ../../src/busybox-$busybox_ver/busybox ./
		for prog in $(./busybox --list); do
			ln -s /bin/busybox ./$prog
		done
	cd ..


#Create initial init 
cat <<EOF >init
#!/bin/sh
mount -t sysfs sysfs /sys
mount -t proc proc /proc
mount -t devtmpfs udev /dev
exec /bin/init
clear
EOF

#Create busybox initrd
echo "tty1::respawn:-/bin/sh" > ./etc/inittab

#Create resolv.conf
echo "nameserver 1.1.1.1" > ./etc/resolv.conf

#Add curl + certificates for tls support

 #Add static curl binary 
  ver="$(curl -s "https://api.github.com/repos/stunnel/static-curl/tags" | jq -r '.[0].name' | tr "_" ".")"
  rel="$(curl -s "https://api.github.com/repos/stunnel/static-curl/releases" | jq -r '.[0].name' | tr "_" ".")"
  wget "https://github.com/stunnel/static-curl/releases/download/$rel/curl-linux-x86_64-musl-$ver.tar.xz"
  tar xf curl-linux-x86_64-musl-$ver.tar.xz -C ./bin/
  rm curl-linux-x86_64-musl-$ver.tar.xz

 
  #Add certificates
  ##very ugly way to extract the certs, but hey it just works :) 
  container="$(podman run -d alpine:edge /bin/sh -c "apk add ca-certificates && update-ca-certificates && sleep 90")"
  sleep 10 #make sure that the cmds are finished (except sleep ofc)
  podman cp $container:/etc/ssl/ ./etc/
  podman container rm -f $container


#give perms to files, #todo: find a better way someday
#prevents errors like "can't open /dev/tty1: no such file "
chmod -R 777 .

#Add all the files to a img
find . | cpio -o -H newc > ../initrd.img

cd ..