#!/bin/bash -x

set -eE -o pipefail
trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR

if [[ $EUID != 0 ]]; then
  echo "$0: error: expected to be root."
  exit 1
fi

# ssh host keys
# note, $BASH_SOURCE is not defined here under fai.

src=$(dirname "$0")/p/c/machine_specific/$HOSTNAME/filesystem/etc/ssh
dst=$target/etc/ssh
if [[ -e $src && -e $dst ]]; then
  # outside of fai context or setting up a brand new host, we skip this
  cp -rT $src $dst
fi

USER2PW=/q/root/shadow/user2
# if doesn't exist, we dont set one
ROOTPW=/q/root/shadow/standard
if [[ ! -e $ROOTPW ]]; then
  ROOTPW=/q/root/shadow/$HOSTNAME
fi

chpw() {
  # generating a hashed password:
  # under debian, you can do
  # mkpasswd -m sha-512 -s >/q/root/shadow/standard
  # On arch, best seems to be copy your shadow file to a temp location,
  # then passwd, get out the new pass, then copy the shadow file back.

  user=$1
  pwfile=$2
  if [[ $pwfile && -e $pwfile ]]; then
    printf "$user:" | cat - "$pwfile" | $ROOTCMD chpasswd -e
  else
    echo "$0: warning: no pw set for $user" >&2
  fi
}
au() { # add user. i don't use adduser for portability
  local user=${@: -1}
  if ! $ROOTCMD getent passwd $user; then
    $ROOTCMD useradd -c $user -Um -s /bin/bash $@
  fi
}

chpw root "$ROOTPW"

# only setup root pass for bootstrap vol
if ifclass VOL_BUSTER_BOOTSTRAP; then
  exit 0
fi


# return of 9 = user already exists. so we are idempotent.
au iank
chpw iank "$ROOTPW"

au user2
if ifclass frodo; then
  chpw user2 "$USER2PW"
fi
# comparing iank's groups to user2, I see none she should join on arch
$ROOTCMD usermod -a -G user2 iank


$ROOTCMD getent group docker &>/dev/null || $ROOTCMD groupadd -r docker
$ROOTCMD usermod -a -G docker iank

# based on unison error, with 8192 from
# sysctl -a | grep fs.inotify.max_user_watches
#http://stackoverflow.com/questions/535768/what-is-a-reasonable-amount-of-inotify-watches-with-linux
f=$target/etc/sysctl.d/99-sysctl.conf
key=fs.inotify.max_user_watches
if [[ -e $f ]]; then sed -ri --follow-symlinks "/^\s*$key\s*=/d" $f; fi
echo "fs.inotify.max_user_watches = 50000" >> $f
# applies it. it would be also be applied after a reboot
$ROOTCMD sysctl --system

f=$target/etc/sudoers
line='iank  ALL=(ALL)  NOPASSWD: ALL'
if [[ ! -e $f ]] || ! grep -xF "$line" $f; then
  echo "$line" >> $f
fi


au --system -s /bin/false --home-dir /var/lib/bitcoind bitcoin