#!/bin/bash

# Do the real building work. This script is executed on build VM and
# requires a working installation of CMake.

# Build in a temp directory so we don't pollute cwd
tmpdir=$(mktemp -d)

cd $tmpdir

command -v apt-get

if [ $? == 0 ]
then
  # DEB-based distro
  install_libdir=/usr/lib
  export DEBIAN_FRONTEND=noninteractive
  sudo apt-get update

  sudo dpkg-reconfigure libc6
  sudo -E apt-get -q -o Dpkg::Options::=--force-confold \
       -o Dpkg::Options::=--force-confdef \
       -y --force-yes \
       install dpkg-dev git wget \
       build-essential libssl-dev ncurses-dev bison flex \
       perl libtool libpcre3-dev tcl tcl-dev uuid \
       uuid-dev libsqlite3-dev liblzma-dev libpam0g-dev pkg-config \
       libedit-dev libcurl4-openssl-dev

  # One of these will work, older systems use libsystemd-daemon-dev
  sudo apt-get install -y libsystemd-dev || \
      sudo apt-get install -y libsystemd-daemon-dev

  ## separatelibgnutls installation process for Ubuntu Trusty
  cat /etc/*release | grep -E "Trusty|wheezy"
  if [ $? == 0 ]
  then
     sudo apt-get install -y --force-yes libgnutls-dev libgcrypt11-dev
  else
     sudo apt-get install -y --force-yes libgnutls30 libgnutls-dev
     if [ $? != 0 ]
     then
         sudo apt-get install -y --force-yes libgnutls28-dev
     fi
     sudo apt-get install -y --force-yes libgcrypt20-dev
     if [ $? != 0 ]
     then
         sudo apt-get install -y --force-yes libgcrypt11-dev
     fi
  fi
else
  ## RPM-based distro
  install_libdir=/usr/lib64
  command -v yum

  if [ $? != 0 ]
  then
    # We need zypper here
    sudo zypper -n refresh
    sudo zypper -n update
    sudo zypper -n install gcc gcc-c++ ncurses-devel bison glibc-devel libgcc_s1 perl \
         make libtool libopenssl-devel libaio libaio-devel flex \
         pcre-devel git wget tcl tcl-devel libuuid-devel \
         xz-devel sqlite3 sqlite3-devel pkg-config lua lua-devel \
         gnutls-devel libgcrypt-devel pam-devel systemd-devel libcurl-devel
    sudo zypper -n install rpm-build
    cat /etc/*-release | grep "SUSE Linux Enterprise Server 11"

    if [ $? != 0 ]
    then
      sudo zypper -n install libedit-devel
    fi
  else
    # YUM!
    sudo yum clean all
    sudo yum update -y
    sudo yum install -y --nogpgcheck gcc gcc-c++ ncurses-devel bison glibc-devel \
         libgcc perl make libtool openssl-devel libaio libaio-devel libedit-devel \
         libedit-devel systemtap-sdt-devel rpm-sign wget \
         gnupg pcre-devel flex rpmdevtools git wget tcl tcl-devel openssl libuuid-devel xz-devel \
         sqlite sqlite-devel pkgconfig lua lua-devel rpm-build createrepo yum-utils \
         gnutls-devel libgcrypt-devel pam-devel libcurl-devel

    # Attempt to install libasan, it'll only work on CentOS 7
    sudo yum install -y --nogpgcheck libasan

    # Attempt to install systemd-devel, doesn't work on CentOS 6
    sudo yum install -y systemd-devel

    # Enable the devtoolkit to get a newer compiler

    # CentOS: install the centos-release-scl repo
    # RHEL: enable the existing repo (seems to be rhui-REGION-rhel-server-rhscl on AWS)
    sudo yum -y install centos-release-scl || \
        sudo yum-config-manager --enable rhui-REGION-rhel-server-rhscl

    sudo yum -y install devtoolset-7-gcc-c++

    # Enable it by default
    echo "source /opt/rh/devtoolset-7/enable" >> ~/.bashrc

    grep "release 6" /etc/redhat-release
    if [ $? -ne 0 ]
    then
        # EPEL is installed for REST API and MaxCtrl unit tests (docker-compose etc.) and GCOV report generation (lcov)
        sudo yum -y install docker epel-release
        sudo yum -y install docker-compose lcov
        sudo groupadd docker
        sudo usermod -a -G docker `whoami`
        sudo sed -i 's/--selinux-enabled/--selinux-enabled=false/' /etc/sysconfig/docker
        sudo systemctl start docker
    fi
  fi
fi

# cmake
wget -q http://max-tst-01.mariadb.com/ci-repository/cmake-3.7.1-Linux-x86_64.tar.gz --no-check-certificate
if [ $? != 0 ] ; then
    echo "CMake can not be downloaded from Maxscale build server, trying from cmake.org"
    wget -q https://cmake.org/files/v3.7/cmake-3.7.1-Linux-x86_64.tar.gz --no-check-certificate
fi
sudo tar xzf cmake-3.7.1-Linux-x86_64.tar.gz -C /usr/ --strip-components=1

cmake_version=`cmake --version | grep "cmake version" | awk '{ print $3 }'`
if [ "`echo -e "3.7.1\n$cmake_version"|sort -V|head -n 1`" != "3.7.1" ] ; then
    echo "cmake does not work! Trying to build from source"
    wget -q https://cmake.org/files/v3.7/cmake-3.7.1.tar.gz --no-check-certificate
    tar xzf cmake-3.7.1.tar.gz
    cd cmake-3.7.1

    ./bootstrap
    gmake
    sudo make install
    cd ..
fi

# RabbitMQ C client
mkdir rabbit
cd rabbit
git clone https://github.com/alanxz/rabbitmq-c.git

if [ $? != 0 ]
then
    echo "Error cloning rabbitmq-c"
    sudo rm -rf $tmpdir
    exit 1
fi

cd rabbitmq-c
git checkout v0.7.1
cmake .  -DCMAKE_C_FLAGS=-fPIC -DBUILD_SHARED_LIBS=N  -DCMAKE_INSTALL_PREFIX=/usr
sudo make install
cd ../../

# TCL
# Methods allow to compare software versions according to semantic versioning
verlte() {
    [  "$1" = "`echo -e "$1\n$2" | sort -V | head -n1`" ]
}

verlt() {
    [ "$1" = "$2" ] && return 1 || verlte $1 $2
}

system_tcl_version=$(tclsh <<< 'puts [info patchlevel]')
if verlt "$system_tcl_version" "8.6.5"
then
   mkdir tcl
   cd tcl
   wget -q --no-check-certificate http://prdownloads.sourceforge.net/tcl/tcl8.6.5-src.tar.gz

   if [ $? != 0 ]
   then
       echo "Error getting tcl"
       exit 1
   fi

   tar xzf tcl8.6.5-src.tar.gz
   cd tcl8.6.5/unix
   ./configure
   sudo make install
   cd ../../..
fi

# Jansson
git clone https://github.com/akheron/jansson.git
if [ $? != 0 ]
then
    echo "Error cloning jansson"
    sudo rm -rf $tmpdir
    exit 1
fi

cd jansson
git checkout v2.9
mkdir build
cd build
cmake .. -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_C_FLAGS=-fPIC -DJANSSON_INSTALL_LIB_DIR=$install_libdir
make
sudo make install
cd ../../

# Avro C API
wget -q -r -l1 -nH --cut-dirs=2 --no-parent -A.tar.gz --no-directories http://mirror.netinch.com/pub/apache/avro/stable/c
if [ $? != 0 ]
then
    echo "Error getting avro-c"
    sudo rm -rf $tmpdir
    exit 1
fi
avro_filename=`ls -1 avro*.tar.gz`
avro_dir=`echo "$avro_filename" | sed "s/.tar.gz//"`
tar -axf $avro_filename
mkdir $avro_dir/build
pushd $avro_dir/build
# Make sure the library isn't linked against snappy
sed -i 's/find_package(Snappy)//' ../lang/c/CMakeLists.txt
cmake .. -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_C_FLAGS=-fPIC -DCMAKE_CXX_FLAGS=-fPIC
make
sudo make install
popd

wget --quiet https://nodejs.org/dist/v6.11.2/node-v6.11.2-linux-x64.tar.xz
tar -axf node-v6.11.2-linux-x64.tar.xz
sudo cp -t /usr -r node-v6.11.2-linux-x64/*

sudo rm -rf $tmpdir