#!/bin/bash
#
# About: Build OpenDiablo 2 automatically
# Author: liberodark
# License: GNU GPLv3

version="0.0.8"
go_version="1.13.4"
echo "OpenDiablo 2 Build Script $version"

#=================================================
# RETRIEVE ARGUMENTS FROM THE MANIFEST AND VAR
#=================================================
export PATH=$PATH:/usr/local/go/bin

distribution=$(cat /etc/*release | grep "PRETTY_NAME" | sed 's/PRETTY_NAME=//g' | sed 's/["]//g' | awk '{print $1}')
mesa_detect_arch=$(pacman -Q | grep mesa)


go_install(){
  # Check OS & go

  if ! command -v go > /dev/null 2>&1; then

    echo "Install Go for OpenDiablo 2 ($distribution)? y/n"
	    read -r choice
	    [ "$choice" != y ] && [ "$choice" != Y ] && exit

    if [ "$distribution" = "CentOS" ] || [ "$distribution" = "Red\ Hat" ] || [ "$distribution" = "Oracle" ]; then
      echo "Downloading Go"
      wget https://dl.google.com/go/go"$go_version".linux-amd64.tar.gz > /dev/null 2>&1
      echo "Install Go"
	  	sudo tar -C /usr/local -xzf go*.linux-amd64.tar.gz > /dev/null 2>&1
      echo "Clean unneeded files"
	  	rm go*.linux-amd64.tar.gz

    elif [ "$distribution" = "Fedora" ]; then
      echo "Downloading Go"
      wget https://dl.google.com/go/go"$go_version".linux-amd64.tar.gz > /dev/null 2>&1
      echo "Install Go"
	    sudo tar -C /usr/local -xzf go*.linux-amd64.tar.gz > /dev/null 2>&1
      echo "Clean unneeded files"
	    rm go*.linux-amd64.tar.gz

    elif [ "$distribution" = "Debian" ] || [ "$distribution" = "Ubuntu" ] || [ "$distribution" = "Deepin" ]; then
      echo "Downloading Go"
      wget https://dl.google.com/go/go"$go_version".linux-amd64.tar.gz > /dev/null 2>&1
      echo "Install Go"
	    sudo tar -C /usr/local -xzf go*.linux-amd64.tar.gz > /dev/null 2>&1
      echo "Clean unneeded files"
	    rm go*.linux-amd64.tar.gz

    elif [ "$distribution" = "Gentoo" ]; then
      sudo emerge --ask n go

    elif [ "$distribution" = "Manjaro" ] || [ "$distribution" = "Arch\ Linux" ]; then
      sudo pacman -S go --noconfirm

	elif [ "$distribution" = "OpenSUSE" ] || [ "$distribution" = "SUSE" ]; then
	  echo "Downloading Go"
      wget https://dl.google.com/go/go"$go_version".linux-amd64.tar.gz > /dev/null 2>&1
      echo "Install Go"
	    sudo tar -C /usr/local -xzf go*.linux-amd64.tar.gz > /dev/null 2>&1
      echo "Clean unneeded files"
	    rm go*.linux-amd64.tar.gz

    fi
fi
}

dep_install(){
	  if [ "$distribution" = "CentOS" ] || [ "$distribution" = "Red\ Hat" ] || [ "$distribution" = "Oracle" ]; then
	  sudo yum install -y libX11-devel libXcursor-devel libXrandr-devel libXinerama-devel mesa-libGL-devel alsa-lib-devel libXi-devel > /dev/null 2>&1

    elif [ "$distribution" = "Fedora" ]; then
	  sudo dnf install -y libX11-devel libXcursor-devel libXrandr-devel libXinerama-devel mesa-libGL-devel alsa-lib-devel libXi-devel > /dev/null 2>&1

    elif [ "$distribution" = "Debian" ] || [ "$distribution" = "Ubuntu" ] || [ "$distribution" = "Deepin" ]; then
	  sudo apt-get install -y libxcursor-dev libxrandr-dev libxinerama-dev libxi-dev libgl1-mesa-dev libsdl2-dev libasound2-dev > /dev/null 2>&1

    elif [ "$distribution" = "Gentoo" ]; then
    sudo emerge --ask n libXcursor libXrandr libXinerama libXi libGLw libglvnd libsdl2 alsa-lib > /dev/null 2>&1

    elif [ "$distribution" = "Manjaro" ] || [ "$distribution" = "Arch\ Linux" ]; then

      if [ -z "$mesa_detect_arch" ]; then
  		sudo pacman -S libxcursor libxrandr libxinerama libxi mesa libglvnd sdl2 sdl2_mixer sdl2_net alsa-lib --noconfirm > /dev/null 2>&1
      else
      sudo pacman -S libxcursor libxrandr libxinerama libxi libglvnd sdl2 sdl2_mixer sdl2_net alsa-lib --noconfirm > /dev/null 2>&1
      fi

	  elif [ "$distribution" = "OpenSUSE" ] || [ "$distribution" = "SUSE" ]; then
		sudo zypper install -y libX11-devel libXcursor-devel libXrandr-devel libXinerama-devel Mesa-libGL-devel alsa-lib-devel libXi-devel > /dev/null 2>&1

    elif [[ "$OSTYPE" == "darwin"* ]]; then
    # are there dependencies required? did I just have all of them already?
    echo "Mac OS detected, no dependency installation necessary..."

    fi
}

# Build
echo "Check Go"
go_install
echo "Install libraries"
if [ -e "$HOME/.config/OpenDiablo2/.libs" ]; then
echo "libraries is installed"
else
echo "OK" > "$HOME/.config/OpenDiablo2/.libs"
dep_install
fi
echo "Build OpenDiablo 2"
go get -d
go build
echo "Build finished. Running OpenDiablo2 will generate a config.json file."
echo "If there are subsequent errors, please inspect and edit the config.json file. See doc/index.html for more details"
