#!/bin/bash

function print_help () {
    echo "Usage: $0 [OPTION]"
    echo -e "Check for missing packages and install them if possible.\n"
    echo "Optional arguments:"
    echo -e "  -s\tuse sudo apt-get for installing packages"
    echo -e "  -h\tdisplay this help and exit"
}

required_pkgs=(git cmake clang-3.8 llvm-3.8 doxygen
               wget # for downloading libs, e.g. antlr
               uuid-dev default-jre-headless # required by antlr
              )

optional_pkgs=(clang-format-3.8 # source code formatting
               libreadline-dev # for Memgraph CLI
              )

use_sudo=0

if [[ $# -gt 1 ]]; then
    print_help
    exit 1
elif  [[ $# -eq 1 ]]; then
    case "$1" in
      -s)
          use_sudo=1
      ;;
      -h)
          print_help
          exit 0
      ;;
      *)
          # unknown option
          print_help
          exit 1
      ;;
  esac
fi

echo "Started installing dependencies for Memgraph"

required_missing=0

# install all dependencies on debian based operating systems
for pkg in ${required_pkgs[@]}; do
    if dpkg -s $pkg 2>/dev/null >/dev/null; then
        echo "Found $pkg"
    elif (( $use_sudo )); then
        echo "Installing $pkg"
        if [[ ! `sudo apt-get -y install $pkg` ]]; then
            echo "Didn't install $pkg [required]"
            required_missing=1
        fi
    else
        echo "Missing $pkg [required]"
        required_missing=1
    fi
done

for pkg in ${optional_pkgs[@]}; do
    if dpkg -s $pkg 2>/dev/null >/dev/null; then
        echo "Found $pkg [optional]"
    else
        echo "Missing $pkg [optional]"
    fi
done

if (( $required_missing )); then
    echo "Missing required packages. EXITING!"
    echo "Please, install required packages and rerun $0 again."
    exit 2
fi

# create a default build directory
mkdir -p ./build

# setup libs (download)
cd libs
./setup.sh
cd ..

echo "Done installing dependencies for Memgraph"