#!/usr/bin/env bash
trap "exit" INT

if [ ! -d "amxmodx" ]; then
  git clone --recursive https://github.com/alliedmodders/amxmodx.git
fi

if [ ! -d "amxmodx/build_deps" ]; then
  mkdir amxmodx/build_deps
fi

download_archive ()
{
  if [ `command -v wget` ]; then
    wget "$url" -O "$dest"
  elif [ `command -v curl` ]; then
    curl -o $dest $url
  else
    echo "Failed to locate wget or curl. Please install one of these programs."
    exit 1
  fi
}

ismac=0
iswin=0

if [ "$1" != "--no-mysql" ]; then
  ismac=0
  iswin=0

  archive_ext=tar.gz
  decomp="tar zxf"

  if [ `uname` = "Darwin" ]; then
    ismac=1
  elif [ `uname` != "Linux" ] && [ -n "${COMSPEC:+1}" ]; then
    iswin=1
    archive_ext=zip
    decomp=unzip
  fi

  if [ $ismac -eq 1 ]; then
    mysqlver=mysql-5.5.40-osx10.6-x86
    mysqlurl=http://cdn.mysql.com/archives/mysql-5.5/$mysqlver.$archive_ext
  elif [ $iswin -eq 1 ]; then
    mysqlver=mysql-5.5.57-win32
    mysqlurl=http://cdn.mysql.com/archives/mysql-5.5/$mysqlver.$archive_ext
    # The folder in the zip archive does not contain the substring "-noinstall", so strip it
    mysqlver=${mysqlver/-noinstall}
  else
    mysqlver=mysql-5.5.57-linux-glibc2.12-i686
    mysqlurl=http://cdn.mysql.com/archives/mysql-5.5/$mysqlver.$archive_ext
  fi

  if [ ! -d "mysql-5.5" ]; then
    url=$mysqlurl
    dest=mysql.$archive_ext
    download_archive
    $decomp mysql.$archive_ext
    mv $mysqlver mysql-5.5
    rm mysql.$archive_ext
  fi
fi

checkout ()
{
  if [ ! -d "$name" ]; then
    git clone $repo -b $branch $name
    if [ -n "$origin" ]; then
      cd $name
      git remote rm origin
      git remote add origin $origin
      cd ..
    fi
  else
    cd $name
    git checkout $branch
    git pull origin $branch
    cd ..
  fi
}

name=metamod-am
branch=master
repo="https://github.com/alliedmodders/metamod-hl1"
origin=
checkout

name=hlsdk
branch=master
repo="https://github.com/alliedmodders/hlsdk"
origin=
checkout

python_cmd=`command -v python3`
if [ -z "$python_cmd" ]; then
  echo "No suitable installation of Python detected. Min required is 3.6"
  exit 1
fi

`$python_cmd -c "import ambuild2"` 2>&1 1>/dev/null
if [ $? -eq 1 ]; then
  echo "AMBuild is required to build AMXModX"

  `$python_cmd -m pip --version` 2>&1 1>/dev/null
  if [ $? -eq 1 ]; then
    echo "The detected Python installation does not have PIP"
    echo "Installing the latest version of PIP available (VIA \"get-pip.py\")"

    get_pip="./get-pip.py"
    get_pip_url="https://bootstrap.pypa.io/get-pip.py"

    if [ `command -v wget` ]; then
      wget $get_pip_url -O $get_pip
    elif [ `command -v curl` ]; then
      curl -o $get_pip $get_pip_url
    else
      echo "Failed to locate wget or curl. Install one of these programs to download 'get-pip.py'."
      exit 1
    fi

    $python_cmd $get_pip
    if [ $? -eq 1 ]; then
      echo "Installation of PIP has failed"
      exit 1
    fi
  fi

  repo="https://github.com/alliedmodders/ambuild"
  origin=
  branch=master
  name=ambuild
  checkout

  if [ $iswin -eq 1 ] || [ $ismac -eq 1 ]; then
    $python_cmd -m pip install ./ambuild
  else
    echo "Installing AMBuild at the user level. Location can be: ~/.local/bin"
    $python_cmd -m pip install --user ./ambuild
  fi
fi

if [ $iswin -eq 1 ]; then
  if [ ! -d "amxmodx/build_deps/nasm-2.13.03" ]; then
    url=http://www.nasm.us/pub/nasm/releasebuilds/2.13.03/win32/nasm-2.13.03-win32.zip
    dest=amxmodx/build_deps/nasm-2.13.03-win32.zip
    download_archive
    cd amxmodx/build_deps
    unzip nasm-2.13.03-win32.zip
    rm nasm-2.13.03-win32.zip
    mv nasm-2.13.03 nasm
  fi
fi