#! /bin/bash

function pre_req()
{
source script/discover_package_manager
source script/discover_os
source script/solve_autoconf
source script/solve_gpp
source script/solve_cmake
source script/solve_git
source script/solve_wget
source script/solve_automake
source script/solve_brew
source script/solve_libtool
source script/solve_gfortran
source script/detect_gcc
source script/detect_osx
source script/show_solutions
source script/detect_fortran

discover_os
discover_package_manager $platform
pcman=$discover_package_manager_ret

if [ x"$platform" = x"osx" -a x"$pcman" = x""  ]; then
  echo -e "\033[30;43;5;1m WARNING \033[0m No package manager has been found on this system"
  solve_brew $platform

  discover_package_manager $platform
  pcman=$discover_package_manager_ret
  if [ x"$pcman" != x"brew" ]; then
    echo -e "brew \033[91;5;1m FAILED \033[0m"
  fi
fi

### Additional package required for apt-get based distros
if [ x"$platform" = x"linux" -a x"$pcman" = x"sudo apt-get"  ]; then
  dpkg-query -l libbz2-dev
  ret1=$?
  dpkg-query -l python-dev
  ret2=$?
  dpkg-query -l libxml2-dev
  ret3=$?
  dpkg-query -l libxslt-dev
  ret4=$?
  if [ $ret1 -ne 0 -o $ret2 -ne 0 -o $ret3 -ne 0 -o $ret4 -ne 0 ]; then
    echo "OpenFPM require additional packages in order to install correctly"
    commands[0]="$pcman install libbz2-dev python-dev libxml2-dev libxslt-dev"
    possible_solutions "${commands[@]}"
    echo "Executing: ${command[$possible_solutions_ret]}"
    eval ${commands[$possible_solutions_ret]}
  fi
fi

### Additional package required for yum based distros
if [ x"$platform" = x"linux" -a x"$pcman" = x"yum"  ]; then
  rpm -V bzip2-devel
  ret1=$?
  rpm -V python-devel
  ret2=$?
  rpm -V libxml2-devel
  ret3=$?
  rpm -V libxslt-devel
  ret4=$?
  if [ $ret1 -ne 0 -o $ret2 -ne 0 -o $ret3 -ne 0 -o $ret4 -ne 0 ]; then
    echo "OpenFPM require additional packages in order to install correctly"
    commands[0]="su -c \"$pcman install bzip2-devel python-devel libxml2-devel libxslt-devel\""
    commands[1]="sudo $pcman install bzip2-devel python-devel libxml2-devel libxslt-devel"
    possible_solutions "${commands[@]}"
    echo "Executing: ${command[$possible_solutions_ret]}"
    eval ${commands[$possible_solutions_ret]}
  fi
fi

command -v cmake >/dev/null 2>&1
if [ $? -ne 0 ]; then
  echo >&2
  echo -e "cmake\033[91;5;1m FAILED \033[0m"
  echo "OpenFPM require cmake but it's not installed, searching a solution... "
  solve_cmake $platform
  command -v cmake >/dev/null 2>&1
  if [ $? -ne 0 ]; then
    echo -e "cmake\033[91;5;1m FAILED \033[0m"
    exit 1
  else
    echo -e "cmake\033[92;1m SUCCESS \033[0m"
  fi
else
  echo -e "cmake\033[92;1m SUCCESS \033[0m"
fi

command -v wget >/dev/null 2>&1
if [ $? -ne 0 ]; then
  echo >&2
  echo -e "wget\033[91;5;1m FAILED \033[0m"
  echo "OpenFPM require wget but it's not installed, searching a solution... "
  solve_wget $platform
  command -v wget >/dev/null 2>&1
  if [ $? -ne 0 ]; then
    echo -e "wget\033[91;5;1m FAILED \033[0m"
    exit 1
  else
    echo -e "wget\033[92;1m SUCCESS \033[0m"
  fi
else
  echo -e "wget \033[92;1m SUCCESS \033[0m"
fi

command -v git >/dev/null 2>&1
if [ $? -ne 0 ]; then 
  echo >&2
  echo -e "git\033[91;5;1m FAILED \033[0m"
  echo "OpenFPM require git but it's not installed, searching a solution... "
  solve_git $platform
  command -v git >/dev/null 2>&1
  if [ $? -ne 0 ]; then
    echo -e "git\033[91;5;1m FAILED \033[0m"
    exit 1
  else
    echo -e "git\033[92;1m SUCCESS \033[0m"
  fi
else
  echo -e "git \033[92;1m SUCCESS \033[0m"
fi

command -v autoconf >/dev/null 2>&1
if [ $? -ne 0 ]; then
  echo >&2
  echo -e "autoconf\033[91;5;1m FAILED \033[0m"
  echo "OpenFPM require autoconf but it's not installed, searching a solution..."
  solve_autoconf $platform
  command -v autoheader >/dev/null 2>&1
  if [ $? -ne 0 ]; then
    echo -e "autoconf\033[91;5;1m FAILED \033[0m"
    exit 1
  else
    echo -e "autoconf\033[92;1m SUCCESS \033[0m"
  fi
else
  echo -e "autoconf\033[92;1m SUCCESS \033[0m"
fi

command -v automake >/dev/null 2>&1
if [ $? -ne 0 ]; then
  echo >&2
  echo -e "automake\033[91;5;1m FAILED \033[0m"
  echo "OpenFPM require automake but it's not installed, searching a solution..."
  solve_automake $platform
  command -v automake >/dev/null 2>&1
  if [ $? -ne 0 ]; then
    echo "automake\033[91;5;1m FAILED \033[0m"
    exit 1
  else
    echo -e "automake\033[92;1m SUCCESS \033[0m"
  fi
else
  echo -e "automake\033[92;1m SUCCESS \033[0m"
fi


command -v libtoolize  >/dev/null 2>&1
opt1=$?
command -v glibtoolize  >/dev/null 2>&1
opt2=$?
if [ $opt1 -ne 0 -a $opt2 -ne 0 ]; then
  echo >&2
  echo -e "libtool\033[91;5;1m FAILED \033[0m"
  echo "OpenFPM require libtool but it's not installed, searching a solution..."
  solve_libtool $platform
  command -v libtoolize  >/dev/null 2>&1
  opt1=$?
  command -v glibtoolize  >/dev/null 2>&1
  opt2=$?
  if [ $opt1 -ne 0 -a $opt2 -ne 0 ]; then
    echo -e "libtool\033[91;5;1m FAILED \033[0m"
    exit 1
  else
    echo -e "libtool\033[92;1m SUCCESS \033[0m"
  fi
else
  echo -e "libtool\033[92;1m SUCCESS \033[0m"
fi

#### Detecting g++

detect_gcc_or_clang g++
if [ $dgc_ret -eq 0 ]; then
  solve_gpp $platform
  detect_gcc_or_clang $compiler_gpp
  if [ $dgc_ret -eq 0 ]; then
    exit 1
  fi
elif [ $dgc_ret -eq 2 ]; then
  detect_osx $platform
  if [ $dosx_ret -eq 1 ]; then
    echo -e "\033[30;43;5;1m------------------------------- WARNING --------------------------------\033[0m"
    echo "g++ seem to be present, but we failed to detect the version. Your system $dosx_major.$dosx_middle.$dosx_minor seem to be recent enough, so we will continue the installation"
    sleep 10    
  fi
fi

#### Detection gfortran

detect_fortran gfortran
if [ $dgc_ret -eq 0 ]; then
  solve_gfortran $platform
  detect_fortran $compiler_fortran
  if [ $dgc_ret -eq 0 ]; then
    exit 1
  fi
else
  echo -e "gfortran \033[92;1m SUCCESS \033[0m"
fi


command -v mpirun >/dev/null 2>&1
if [ $? -ne 0 ]; then
  echo -e "No MPI"
else
  major=$(mpirun --version 2>&1 | grep mpirun | sed 's/.*\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/\1/g')
  middle=$(mpirun --version 2>&1 | grep mpirun | sed 's/.*\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/\2/g')
  minor=$(mpirun --version 2>&1 | grep mpirun | sed 's/.*\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*/\3/g')
  if [ $major -gt 1 ]; then
    echo -e "mpirun $major.$middle.$minor \033[92;1m SUCCESS \033[0m"
  elif [ $major -lt 1 ]; then
    echo -e "mpirun $major.$middle.$minor \033[91;5;1m FAILED \033[0m is too old, 1.8.1 at least required"
    MPI_installation_required=yes
  elif [ $middle -gt 8  ]; then
    echo -e "mpirun $major.$middle.$minor \033[92;1m SUCCESS \033[0m"
  elif [ $middle -lt 8 ]; then
    echo -e "mpirun $major.$middle.$minor \033[91;5;1m FAILED \033[0m is too old, 1.8.1 at least required"
    MPI_installation_required=yes
  elif [ $minor -gt 0  ]; then
    echo -e "mpirun $major.$middle.$minor \033[92;1m SUCCESS \033[0m"
  else
    echo -e "mpirun $major.$middle.$minor \033[91;5;1m FAILED \033[0m is too old, 1.8.1 at least required"
    MPI_installation_required=yes
  fi 
fi
}