#!/bin/bash

# Print commands and exit on errors
set -xe

# Sublime 3 install steps came from this page on 2020-May-11:
# https://www.sublimetext.com/docs/3/linux_repositories.html#apt
# The commands were modified only to remove 'sudo' from several
# commands.  sudo is unnecessary here since this entire script is
# executed as the user root.

wget -qO - https://download.sublimetext.com/sublimehq-pub.gpg | apt-key add -
apt-get install apt-transport-https
echo "deb https://download.sublimetext.com/ apt/stable/" | tee /etc/apt/sources.list.d/sublime-text.list
# These commands are done later below
#apt-get update
#apt-get install sublime-text

# Atom install steps came from this page on 2020-May-11:
# https://flight-manual.atom.io/getting-started/sections/installing-atom/#platform-linux

wget -qO - https://packagecloud.io/AtomEditor/atom/gpgkey | apt-key add -
sh -c 'echo "deb [arch=amd64] https://packagecloud.io/AtomEditor/atom/any/ any main" > /etc/apt/sources.list.d/atom.list'
# These commands are done later below
#apt-get update
#apt-get install atom

apt-get update

KERNEL=$(uname -r)
DEBIAN_FRONTEND=noninteractive apt-get -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" upgrade
apt-get install -y --no-install-recommends --fix-missing\
  atom \
  autoconf \
  automake \
  bison \
  build-essential \
  ca-certificates \
  clang \
  cmake \
  cpp \
  curl \
  emacs \
  flex \
  g++ \
  git \
  iproute2 \
  libboost-dev \
  libboost-filesystem-dev \
  libboost-graph-dev \
  libboost-iostreams-dev \
  libboost-program-options-dev \
  libboost-system-dev \
  libboost-test-dev \
  libboost-thread-dev \
  libelf-dev \
  libevent-dev \
  libffi-dev \
  libfl-dev \
  libgc-dev \
  libgflags-dev \
  libgmp-dev \
  libjudy-dev \
  libpcap-dev \
  libpython3-dev \
  libreadline-dev \
  libssl-dev \
  libtool \
  libtool-bin \
  linux-headers-$KERNEL\
  llvm \
  lubuntu-desktop \
  make \
  net-tools \
  pkg-config \
  python3 \
  python3-dev \
  python3-pip \
  python3-setuptools \
  sublime-text \
  tcpdump \
  unzip \
  valgrind \
  vim \
  wget \
  xcscope-el \
  xterm

# TBD: Should these packages be installed via apt-get ?  They are in
# my install-p4dev-v4.sh script, but they might not be needed, either.

# zlib1g-dev18

# On a freshly installed Ubuntu 20.04.1 or 18.04.5 system, desktop
# amd64 minimal installation, the Debian package python3-protobuf is
# installed.  This is depended upon by another package called
# python3-macaroonbakery, which in turn is is depended upon by a
# package called gnome-online accounts.  I suspect this might have
# something to do with Ubuntu's desire to make it easy to connect with
# on-line accounts like Google accounts.

# This python3-protobuf package enables one to have a session like
# this with no error, on a freshly installed system:

# $ python3
# >>> import google.protobuf

# However, something about this script doing its work causes a
# conflict between the Python3 protobuf module installed by this
# script, and the one installed by the package python3-protobuf, such
# that the import statement above gives an error.  The package
# google.protobuf.internal is used by the p4lang/tutorials Python
# code, and the only way I know to make this work right now is to
# remove the Debian python3-protobuf package, and then install Python3
# protobuf support using pip3 as done below.

# Experiment starting from a freshly installed Ubuntu 20.04.1 Linux
# desktop amd64 system, minimal install:
# Initially, python3-protobuf package was installed.
# Doing python3 followed 'import' of any of these gave no error:
# + google
# + google.protobuf
# + google.protobuf.internal
# Then did 'sudo apt-get purge python3-protobuf'
# At that point, attempting to import any of the 3 modules above gave an error.
# Then did 'sudo apt-get install python3-pip'
# At that point, attempting to import any of the 3 modules above gave an error.
# Then did 'sudo pip3 install protobuf==3.6.1'
# At that point, attempting to import any of the 3 modules above gave NO error.

sudo apt-get purge -y python3-protobuf || echo "Failed to remove python3-protobuf, probably because there was no such package installed"
sudo pip3 install protobuf==3.6.1

# Starting in 2019-Nov, Python3 version of Scapy is needed for `cd
# p4c/build ; make check` to succeed.
sudo pip3 install scapy
# Earlier versions of this script installed the Ubuntu package
# python-ipaddr.  However, that no longer exists in Ubuntu 20.04.  PIP
# for Python3 can install the ipaddr module, which is good enough to
# enable two of p4c's many tests to pass, tests that failed if the
# ipaddr Python3 module is not installed, in my testing on
# 2020-Oct-17.  From the Python stack trace that appears when running
# those failing tests, the code that requires this module is in
# behavioral-model's runtime_CLI.py source file, in a function named
# ipv6Addr_to_bytes.
sudo pip3 install ipaddr

# Things needed for PTF
sudo pip3 install pypcap

# Things needed for `cd tutorials/exercises/basic ; make run` to work:
sudo pip3 install psutil crcmod

useradd -m -d /home/p4 -s /bin/bash p4
echo "p4:p4" | chpasswd
echo "p4 ALL=(ALL) NOPASSWD:ALL" > /etc/sudoers.d/99_p4
chmod 440 /etc/sudoers.d/99_p4
usermod -aG vboxsf p4

cd /usr/share/lubuntu/wallpapers/
cp /home/vagrant/p4-logo.png .
rm lubuntu-default-wallpaper.png
ln -s p4-logo.png lubuntu-default-wallpaper.png
rm /home/vagrant/p4-logo.png
cd ~

# 2021-Mar-06 this command failed with an error that the file did not exist.
#sed -i s@#background=@background=/usr/share/lubuntu/wallpapers/1604-lubuntu-default-wallpaper.png@ /etc/lightdm/lightdm-gtk-greeter.conf
# The following command will hopefully cause the P4 logo to be normal
# size and centered on the initial desktop image, rather than scaled
# and stretched and cropped horribly.
#sed -i s@wallpaper_mode=crop@wallpaper_mode=center@ /etc/xdg/pcmanfm/lubuntu/desktop-items-0.conf

# If that does not have the desired effect, another possibility is
# executing that command to edit the same string in file
# /etc/xdg/pcmanfm/lubuntu/pcmanfm.conf

# TBD: Ubuntu 20.04 does not have the light-locker package, so it
# fails if you try to remove it.  Probably enabling auto-login
# requires a different modification than is done below with the cat <<
# EOF command.

# Disable screensaver
#apt-get -y remove light-locker

# Automatically log into the P4 user
#cat << EOF | tee -a /etc/lightdm/lightdm.conf.d/10-lightdm.conf
#[SeatDefaults]
#autologin-user=p4
#autologin-user-timeout=0
#user-session=Lubuntu
#EOF