#!/bin/bash
set -e

[ ! -d /data ] && mkdir /data

if [ ! -e /data/smb.conf ]; then
echo "
[global]
netbios name  = NETBIOS_NAME
server string = SERVER_STRING
workgroup     = WORKGROUP_NAME
security      = user
map to guest  = bad user

[public]
comment = default public share folder
path = /srv/samba/public
writeable = yes
guest ok = yes
create mask  = 0666
directory mask = 2777" > /data/smb.conf
fi

[ ! -d /srv/samba/public ] && mkdir -p /srv/samba/public && chmod 0777 /srv/samba/public && chown -R nobody:nogroup /srv/samba/public

[ -e /tmp/users.db ] && rm /tmp/users.db
[ -e /tmp/groups.db ] && rm /tmp/groups.db

env | grep '^USER' | while read -r value; do
 echo "$value" | cut -d = -f2 >> /tmp/users.db
done

env | grep '^GROUP' | while read -r value; do
 echo "$value" | cut -d = -f2 >> /tmp/groups.db
done

if [ -e /tmp/users.db ]; then
cat /tmp/users.db | while read LINE; do
 userid=$(echo $LINE | cut -d \| -f1)
 newuser=$(echo $LINE | cut -d \| -f2)
 pass=$(echo $LINE | cut -d \| -f3)

 # make user unix + pass
 if ! id "$newuser" >/dev/null 2>&1; then
  adduser --uid $userid -D "$newuser"
  echo "$newuser:$pass" | chpasswd
 fi

 # make user samba + pass
 if ! pdbedit -L -u "$newuser" >/dev/null 2>&1; then
  echo -e "$pass\n$pass" | smbpasswd -a -s "$newuser"
  smbpasswd -e "$newuser"
 fi

done
fi

if [ -e /tmp/groups.db ]; then
 cat /tmp/groups.db | while read LINE; do
 IFS='|' read -r -a parts <<< "$LINE"
 groupname="${parts[0]}"
 groupusers=("${parts[@]:1}")

 getent group "$groupname" > /dev/null || addgroup "$groupname"

 for unixuser in "${groupusers[@]}"; do
  id "$unixuser" &>/dev/null && usermod -a -G "$groupname" "$unixuser"
 done

 net groupmap list | grep -q "($groupname)" || net groupmap add ntgroup="$groupname" unixgroup="$groupname" type=domain
 done
fi

custom_bashrc() {
cat <<'EOF'
export LS_OPTIONS="--color=auto"
alias ls='ls $LS_OPTIONS'
alias ll='ls $LS_OPTIONS -la'
alias l='ls $LS_OPTIONS -lA'

# prompt SOLO per shell interattive
if [[ $- == *i* ]]; then
  if [ "$(id -u)" -eq 0 ]; then
    PS1="\[\e[35m\][\[\e[31m\]\u\[\e[36m\]@\[\e[32m\]\h\[\e[90m\] \w\[\e[35m\]]\[\e[0m\]# "
  else
    PS1="\[\e[35m\][\[\e[33m\]\u\[\e[36m\]@\[\e[32m\]\h\[\e[90m\] \w\[\e[35m\]]\[\e[0m\]$ "
  fi
  export PS1
fi
EOF
}

setup_bashrc() {
  for home in /root /home/*; do
    [ -d "$home" ] || continue
    bashrc="$home/.bashrc"

    # crea se manca
    [ -f "$bashrc" ] || touch "$bashrc"

    # evita duplicazioni
    grep -q '### CUSTOM BASHRC ###' "$bashrc" && continue

    {
      echo ''
      echo '### CUSTOM BASHRC ###'
      custom_bashrc
    } >> "$bashrc"
  done
}

setup_bashrc

# print cmd that will be executed
echo "Starting: $*" >&2

# launch CMD
exec "$@"