#!/bin/bash
#set -x
#
#gia - version 2

df 2> /dev/null | grep -q newroot
if [ $? = 0 ]; then
  ls /mnt/gentoo/boot/*kernel* &> /dev/null
  if [ $? = 0 ]; then
    echo "-Detected you have already left the chroot and are finishing up."
    echo "Only thing left to do now is type 'reboot'"
    exit
  fi

  echo "-Detected you are currently on the LIVE CD, with no chroot setup." 
  echo " "

  if [ `date -d 04\06\01 +%s` -gt `date +%s` ] || [ `date -d 07\01\01 +%s` -lt `date +%s` ]; then 
    echo "FAIL: Date and time appear to be off."
    echo "# date MMDDhhmmCCYY"; echo ""
  fi

  ifconfig | grep -q eth
  if [ $? != 0 ]; then
    echo "FAIL: No network device detected. This is a non critical error."
    echo "The dhcpcd command can help you get an ip address via dhcp."
    echo "or"
    echo "ifconfig eth0 x.x.x.x netmask 255.255.255.0" 
    echo "route add default gw x.x.x.x"
    echo "echo nameserver x.x.x.x > /etc/resolv.conf"
  else

    ping -c 1 google.com &>/dev/null
    if [ $? != 0 ]; then
      echo "FAIL: Net access ping test failed."
      echo "You can still continue the install if you don't need the Internet to finish it."
    fi
  fi   
  df | grep -q /mnt/gentoo
  if [ $? != 0 ]; then
    echo "You need to partition your HD."
    echo "Use fdisk or cfdisk."
    echo " "
    echo "Your hard drives are:"
    dmesg | grep hd | grep DISK
    echo " -reboot after partitioning- "
    echo " "
    echo "Format your partitions."
    echo "Use mkswap, mke2fs, mke2fs -j, mkreiserfs, mkfs.xfs, or mkfs.jfs"
    echo " "
    echo "After the above is done, mount your root partition to /mnt/gentoo"
    echo "# mount /dev/hda? /mnt/gentoo"
    exit
  else
    if [ ! -e /mnt/gentoo/gia ]; then
      cp ./gia /mnt/gentoo
    fi
  fi 


  ls /mnt/gentoo/usr &> /dev/null
  if [ $? != 0 ]; then
    echo "Next, you need to get a stage file and extract it."
    echo "# cd /mnt/gentoo"
    echo "# tar xvjpf /mnt/cdrom/stages/stage<TAB>"
    echo " "
    echo "Alternatively, you could download the latest stage file if you have net access."
    echo "# links http://www.gentoo.org/main/en/mirrors.xml"
  fi

  ls /mnt/gentoo/usr/portage &> /dev/null
  if [ $? != 0 ]; then
    echo "Next, extract your portage tree."
    echo "# tar xvjf /mnt/cdrom/snapshots/portage-*.tar.bz2 -C /mnt/gentoo/usr"
    echo "TIP: You can use a ; to queue up multiple commands."
    exit
  fi

  if [ ! -e /mnt/gentoo/etc/resolv.conf ]; then
    echo "FAIL: resolv.conf needs to be copied."
    echo " CMD: cp /etc/resolv.conf /mnt/gentoo/etc/resolv.conf"
    echo "AUTOFIX: I will now do the above command for you."
    cp /etc/resolv.conf /mnt/gentoo/etc/resolv.conf
    echo "Done."
  fi

  df -a | grep -q /mnt/gentoo/proc
  # maybe a df -ahs /mnt/gentoo/proc  might work better here.
  if [ $? != 0 ]; then
    echo "FAIL: /mnt/gentoo/proc not detected."
    echo " CMD: mount -t proc none /mnt/gentoo/proc"
    echo "AUTOFIX: I will now mount your proc for you."
    mount -t proc none /mnt/gentoo/proc
    echo "Done."
  fi 
  echo "Next, do your chroot."
  echo "# chroot /mnt/gentoo"
else
  echo "--Post chroot install detected--"
  echo " "

  if [ ! -h /etc/localtime ]; then
    echo "FAIL: /etc/localtime doesn't exist!"
    echo "You need to set your timezone information."
    echo "# ln -sf /usr/share/zoneinfo/<path to time zone file> /etc/localtime"
    echo "TIP: Use the TAB key to show the choices inside of the zoneinfo directory."; echo ""
    exit
  fi 

  if [ ! -e /etc/resolv.conf ]; then
    echo "FAIL: /etc/resolv.conf does not exist!"
    echo "# echo nameserver x.x.x.x > /etc/resolv.conf"
    exit
  fi

  if [ ! -e /etc/hostname ]; then
    echo "FAIL: /etc/hostname does not exist!"
    echo "# echo mymachine > /etc/hostname"
    exit
  fi

  if [ ! -e /etc/dnsdomainname ]; then
    echo "FAIL: /etc/dnsdomainname does not exist!"
    echo "# echo localdomain > /etc/dnsdomainname"
    exit
  fi

  if [ -e /var/cache/edb/virtuals ]; then
    grep -q virtual/cron /var/cache/edb/virtuals
    if [ $? != 0 ]; then
      echo "FAIL: Need to install a CRON service." 
      echo "# emerge vixie-cron   (or dcron, fcron)"
    fi
  fi

  if [ -e /var/cache/edb/virtuals ]; then
    grep -q virtual/bootloader /var/cache/edb/virtuals
    if [ $? != 0 ]; then
      echo "FAIL: Need to install a BOOTLOADER. aka grub/lilo."
      echo "# emerge grub" 
    fi
  fi

  if [ -e /var/cache/edb/virtuals ]; then
    grep -q virtual/logger /var/cache/edb/virtuals
    if [ $? != 0 ]; then
      echo "FAIL: Need to install a LOGGER service." 
      echo "# emerge syslog-ng"
    fi
  fi

  if [ -e /var/cache/edb/world ]; then
    grep -q sys-apps/hotplug /var/cache/edb/world
    if [ $? != 0 ]; then
      echo "FAIL: You don't have hotplug emerged." 
      echo "# emerge hotplug"
    fi 
  fi

  if [ ! -e /etc/runlevels/default/net.eth0 ]; then
    echo "FAIL: net.eth0 is not set to start on bootup!"
    echo "# rc-update add net.eth0 default"
  fi

  if [ ! -e /etc/runlevels/default/domainname ]; then
    echo "FAIL: domainname is not set to start on bootup!"
    echo "# rc-update add domainname default"
  fi

  if [ ! -e /etc/runlevels/default/hotplug ]; then
    echo "FAIL: hotplug is not set to start on bootup!"
    echo "# rc-update add hotplug default"
  fi

  ls /etc/runlevels/default/*cron* &> /dev/null
  if [ $? != 0 ]; then
    echo "FAIL: A cron service is not set to start on bootup!"
    echo "# rc-update add vixie-cron default"
  fi

  ls /etc/runlevels/default/*log* &> /dev/null
  if [ $? != 0 ]; then
    echo "FAIL: A logger service is not set to start on bootup!"
    echo "# rc-update add syslog-ng default"
  fi

  cat /etc/fstab | grep -q /dev/ROOT
  if [ $? = 0 ]; then
    echo "You still need to edit your fstab."
    echo "# nano -w /etc/fstab"
    exit
  fi

  cat /etc/passwd | grep -q 1000
  if [ $? != 0 ]; then
    echo "You still need to setup a user."
    echo "# useradd myuser -m -G users,wheel"
    echo "# passwd myuser"
  fi

  cat /etc/shadow | grep -q Snoq
  if [ $? = 0 ]; then
    echo "Looks like you might still need to set your root passwd."
    echo "# passwd"
    exit
  fi

  cat /etc/conf.d/net | grep -q 192.168.0.2
  if [ $? = 0 ]; then
    cat /etc/conf.d/net | grep -q "#gateway"
    if [ $? = 0 ]; then
      cat /etc/conf.d/net | grep -q "#iface_dhcp"
      if [ $? = 0 ]; then
        echo "You still need to edit your /etc/conf.d/net file."
        echo "This file is for controling your network interfaces."
        echo "#nano -w /etc/conf.d/net"
      fi
    fi
  fi

  cat /etc/fstab | grep -q reiserfs
  if [ $? = 0 ]; then
    cat /var/cache/edb/world | grep -q reiserfs
    if [ $? != 0 ]; then
      echo "Detected reiserfs being used.  You need reiserfsprogs."
      echo "# emerge reiserfsprogs"
      exit
    fi
  fi
  
  cat /var/cache/edb/world | grep -q sources
  if [ $? != 0 ]; then
    echo "You need to emerge some linux kernel sources."
    echo "# emerge development-sources  (or whatever sources you want.)"
  fi

  cat /var/cache/edb/world | grep -q genkernel
  if [ $? != 0 ]; then
    echo "You need to emerge genkernel."
    echo "# emerge genkernel"
  fi

  ls /boot/*kernel* &> /dev/null
  if [ $? != 0 ]; then
    echo "You need to compile a kernel still."
    echo "Either do it manually or use genkernel."
    echo "# genkernel --menuconfig all"
    exit
  fi

  if [ -e /boot/grub/ ] && [ ! -e /boot/grub/grub.conf ]; then
    echo "No grub.conf found."
    echo "Creating a basic one for you..."
    cat >/boot/grub/grub.conf <<.
    default 0
    timeout 4
    color blue/black blue/light-gray

    title=Gentoo Linux
     root (hd0,1)
     # genkernel users:
     kernel /kernel-<kernel version> root=/dev/ram0 init=/linuxrc real_root=/dev/hda3
     initrd /initrd-<kernel version>
     # non-genkernel users:
     kernel /kernel-<kernel version> root=/dev/hda3
.
    echo "...done."
  fi

  if [ -e /boot/grub/ ]; then
    cat /boot/grub/grub.conf | grep -q "kernel version"
    if [ $? = 0 ]; then
      echo "Now go edit your grub.conf"
      echo "Your kernel version is:"
      ls /boot/*kernel*
      echo "# nano -w /boot/grub/grub.conf"
      echo " "
      echo "And lastely run 'grub' and do these commands."
      echo " root (hdx,x)    ...drive, parition"
      echo " setup (hdx)    ...drive"
      echo "Obviously more verbose instructions should be added here."
      exit
    fi
  fi

  echo "You can now type 'exit' to leave the chroot."  
    

fi

#-Other things to add-
#Check critical system files have been edited to non-default values. make.conf,fstab,hosts,rc.conf,net
#Check that atleast 1 system users has been created. 
#check /proc for any hardware hints and recommendations during install.
#Ideally, gia should have two modes. 
#  1) verbose only..shows directions 
#  2) auto does all that is possible.
#If gia is run from an already setup gentoo install, it should do standard checks on the system.