#!/bin/bash

set -e

PASSWD="root:SETPASS:0:0:root:/root:/bin/bash
bin:x:1:1:bin:/dev/null:/bin/false
daemon:x:6:6:Daemon User:/dev/null:/bin/false
messagebus:x:18:18:D-Bus Message Daemon User:/var/run/dbus:/bin/false
nobody:x:99:99:Unprivileged User:/dev/null:/bin/false"

GROUP="root:x:0:
bin:x:1:daemon
sys:x:2:
kmem:x:3:
tape:x:4:
tty:x:5:
daemon:x:6:
floppy:x:7:
disk:x:8:
lp:x:9:
dialout:x:10:
audio:x:11:
video:x:12:
utmp:x:13:
usb:x:14:
cdrom:x:15:
adm:x:16:
messagebus:x:18:
input:x:24:
mail:x:34:
nogroup:x:99:
users:x:999:"

case $1 in
  preinst)
    echo "Creating base directory structure"
    install -d -m 755 ${TARGET}/etc/{ld.so,conf.d,opt}
    install -d -m 755 ${TARGET}/usr/bin
    install -d -m 755 ${TARGET}/bin
    install -d -m 755 ${TARGET}/boot
    install -d -m 755 ${TARGET}/dev
    install -d -m 755 ${TARGET}/home
    install -d -m 755 ${TARGET}/lib
    install -d -m 755 ${TARGET}/media/{cdrom,floppy}
    install -d -m 755 ${TARGET}/mnt
    install -d -m 755 ${TARGET}/opt
    install -d -m 755 ${TARGET}/proc
    install -d -m 750 ${TARGET}/root
    install -d -m 755 ${TARGET}/run/lock
    install -d -m 755 ${TARGET}/sbin
    install -d -m 755 ${TARGET}/srv
    install -d -m 755 ${TARGET}/sys
    install -d -m 1777 ${TARGET}/tmp
    install -d -m 755 ${TARGET}/usr/{bin,include,lib,libexec,local}
    install -d -m 755 ${TARGET}/usr/local/{bin,include,lib,sbin,share}
    install -d -m 755 \
    	${TARGET}/usr/local/share/{color,dict,doc,info,locale,man}
    install -d -m 755 ${TARGET}/usr/local/share/man/man{1..8}
    install -d -m 755 ${TARGET}/usr/local/share/{misc,terminfo,zoneinfo}
    install -d -m 755 ${TARGET}/usr/local/src
    install -d -m 755 ${TARGET}/usr/{sbin,share}
    install -d -m 755 ${TARGET}/usr/share/{color,dict,doc,info,locale}
    install -d -m 755 ${TARGET}/usr/share/man/man{1..8}
    install -d -m 755 ${TARGET}/usr/share/{misc,snap,terminfo,zoneinfo}
    install -d -m 755 ${TARGET}/usr/src
    install -d -m 755 ${TARGET}/var/cache/nscd
    install -d -m 755 ${TARGET}/var/lib/{color,locate,misc}
    install -d -m 755 ${TARGET}/var/{local,log,mail,opt,snap,spool}
    install -d -m 1777 ${TARGET}/var/tmp
    install -m 600 /dev/null ${TARGET}/var/log/btmp
    install -m 644 /dev/null ${TARGET}/var/log/wtmp
    install -m 664 /dev/null ${TARGET}/var/log/lastlog
    ln -sf /proc/self/mounts ${TARGET}/etc/mtab
    ln -sf lib ${TARGET}/lib64
    ln -sf lib ${TARGET}/usr/lib64
    ln -sf lib ${TARGET}/usr/local/lib64
    ln -sf /run/lock ${TARGET}/var/lock
    ln -sf /run ${TARGET}/var/run

    if [ ! -f ${TARGET}/etc/resolv.conf ]&&[ -f /etc/resolv.conf ]; then
      echo "Copying resolv.conf from temporary system"
      cp /etc/resolv.conf ${TARGET}/etc/resolv.conf
    fi

    if [ ! -f ${TARGET}/etc/passwd ]; then
      echo "Creating /etc/passwd"
      echo "${PASSWD}" > ${TARGET}/etc/passwd
    fi
    if [ ! -f ${TARGET}/etc/group ]; then
      echo "Creating /etc/group"
      echo "${GROUP}" > ${TARGET}/etc/group
    fi
    ;;
  postinst)
    setpass=`cat ${TARGET}/etc/shadow|grep ^root|awk -F':' '{print $2}'`

    if [ "$setpass" == 'SETPASS' ]; then
      echo "Setting root password"

      if [[ ${TARGET} ]]; then
        if ! mountpoint ${TARGET}/dev; then
          mount -o ro -t devtmpfs devtmpfs ${TARGET}/dev
          chroot ${TARGET} passwd root
          umount ${TARGET}/dev
        else
          chroot ${TARGET} passwd root
        fi
      else
        passwd root
      fi
    fi

    echo "Refreshing snap"

    if [[ ${TARGET} ]]; then
      chroot ${TARGET} snap refresh
    else
      snap refresh
    fi
    exit 0
    ;;
  prerm)
    exit 0
    ;;
  postrm)
    exit 0
    ;;
esac