#!/bin/bash

SDL2_PV=2.0.3
SDL2_TTF_PV=2.0.12

cachedir=.cache
liburl=https://openrct2.website/files/orctlibs.zip
mkdir -p $cachedir

echo $(uname)

# Sets default target to "linux", if none specified
TARGET=${TARGET-linux}
# keep in sync with version in build.sh
libversion=3
libVFile="./libversion"

function download {
	if command -v curl > /dev/null 2>&1; then
		curl -L -o "$2" "$1"
	elif command -v wget > /dev/null 2>&1; then
		wget -O "$2" "$1"
	else
		echo "Please install either wget or curl to continue"
		exit 1
	fi
}

function download_sdl {
	if [[ ! -f $cachedir/SDL2-devel-${SDL2_PV}-mingw.tar.gz ]]; then
		download http://libsdl.org/release/SDL2-devel-${SDL2_PV}-mingw.tar.gz $cachedir/SDL2-devel-${SDL2_PV}-mingw.tar.gz;
	fi
	if [[ ! -f $cachedir/SDL2_ttf-devel-${SDL2_TTF_PV}-mingw.tar.gz ]]; then
		download https://www.libsdl.org/projects/SDL_ttf/release/SDL2_ttf-devel-${SDL2_TTF_PV}-mingw.tar.gz $cachedir/SDL2_ttf-devel-${SDL2_TTF_PV}-mingw.tar.gz;
	fi
	if [[ ! -d $cachedir/SDL2-${SDL2_PV} ]]; then
		pushd $cachedir
			tar -xzf SDL2-devel-${SDL2_PV}-mingw.tar.gz
		popd
	fi
	if [[ ! -d $cachedir/SDL2_ttf-${SDL2_TTF_PV} ]]; then
		pushd $cachedir
			tar -xzf SDL2_ttf-devel-${SDL2_TTF_PV}-mingw.tar.gz
		popd
	fi
	# Apply platform patch
	mingw_patch=libsdl2-mingw-2.0.3-fix-platform-detection-for-mingw.patch
	if [[ ! -f $cachedir/$mingw_patch ]]; then
		download "https://github.com/anyc/anyc-overlay/raw/master/media-libs/libsdl2-mingw/files/$mingw_patch" $cachedir/$mingw_patch;

		# XXX not sure how to make this idempotent.
		pushd $cachedir/SDL2-${SDL2_PV}/i686-w64-mingw32/include/SDL2/
			echo "Applying patch."
			patch -p2 < ../../../../$mingw_patch
		popd
	fi
}

function download_libs {
	if [[ ! -f $cachedir/orctlibs.zip ]]; then
		download $liburl $cachedir/orctlibs.zip;
	fi
	if [[ ! -d $cachedir/orctlibs ]]; then
		mkdir -p $cachedir/orctlibs
		pushd $cachedir/orctlibs
			unzip -uaq ../orctlibs.zip
		popd
	fi
}

function install_cross_tools {
	if [[ ! -d /usr/local/cross-tools ]]; then
		sudo mkdir -p /usr/local/cross-tools
	fi
	if [[ ! -d /usr/local/cross-tools/i686-w64-mingw32 ]]; then
		sudo cp -r $cachedir/SDL2-${SDL2_PV}/i686-w64-mingw32 /usr/local/cross-tools/
		sudo cp -r $cachedir/SDL2_ttf-${SDL2_TTF_PV}/i686-w64-mingw32 /usr/local/cross-tools/
	fi
	if [[ ! -d /usr/local/cross-tools/orctlibs ]]; then
		sudo mkdir -p /usr/local/cross-tools/orctlibs
		sudo cp -rf $cachedir/orctlibs/glob/* /usr/local/cross-tools/orctlibs/.
	fi
}

function install_pkg_config {
	if [[ ! -f $cachedir/i686-w64-mingw32-pkg-config ]]; then
		# If this fails to work because of newlines, be sure you are running this
		# script with Bash, and not sh. We should really move this to a separate
		# file.
		echo -e "#!/bin/sh\nexport PKG_CONFIG_PATH=/usr/local/cross-tools/i686-w64-mingw32/lib/pkgconfig:/usr/local/cross-tools/orctlibs/lib/pkgconfig\npkg-config \$@" > $cachedir/i686-w64-mingw32-pkg-config;
	fi

	chmod +x $cachedir/i686-w64-mingw32-pkg-config
	sudo cp $cachedir/i686-w64-mingw32-pkg-config /usr/local/bin/

	ls -al /usr/local/bin | grep pkg-config
	cat /usr/local/bin/i686-w64-mingw32-pkg-config
}

function install_local_libs {
	mkdir -p lib
	cp -rf $cachedir/orctlibs/local/* ./lib/.
}

echo TARGET = $TARGET

if [[ $(uname) == "Darwin" ]]; then
    echo "Installation of OpenRCT2 assumes you have homebrew and use it to install packages."

    echo "Check if brew is installed"
    package_command="brew"
    which -s brew
    if [ $? -eq 1 ]; then
        echo "brew is not installed, or is not in your \$PATH"
        echo "Check if MacPorts is installed"
        which -s port
        if [ $? -eq 1 ]; then
            echo "MacPorts not found either, abort"
            exit
        else
            echo "MacPorts found"
            package_command="sudo port"
        fi
    else
        echo "brew was found"
    fi

    # Install packages with whatever command was found.
    # Very possible I'm missing some dependencies here.
    eval "$package_command install cmake wine"

    if [[ ! -d /usr/include/wine ]]; then
        # This will almost certainly break as brew changes. Better ideas
        # welcome.
        wine_path="/usr/local/Cellar/wine/1.6.2/include/wine"
        if [ $package_command == "sudo port" ]; then
            wine_path="/opt/local/include/wine"
        fi
        sudo ln -s $wine_path /usr/include
    fi

    mingw_name=mingw-w32-bin_i686-darwin
    mingw_tar=$mingw_name"_20130531".tar.bz2
    mingw_path=/usr/local/$mingw_name
    if [[ ! -f $cachedir/$mingw_tar ]]; then
        download "https://downloads.sourceforge.net/project/mingw-w64/Toolchains targetting Win32/Automated Builds/$mingw_tar" $cachedir/$mingw_tar
    fi
    if [[ ! -d "$mingw_path" ]]; then

        pushd /usr/local/
            sudo mkdir $mingw_name
        popd

        echo "Extracting contents of $mingw_tar to $mingw_path"
        echo "Don't forget to add $mingw_path/bin to your PATH variable!"
        sudo tar -xyf $cachedir/$mingw_tar -C $mingw_path

        pushd /usr/local
            sudo chmod 755 $mingw_name
            pushd $mingw_name
                sudo find . -type d -exec chmod 755 {} \;
            popd
        popd
    fi
elif [[ $(uname) == "Linux" ]]; then
	if [[ -z "$TRAVIS" ]]; then
	    sudo apt-get install -y binutils-mingw-w64-i686 gcc-mingw-w64-i686 g++-mingw-w64-i686 cmake
		if [[ -z "$DISABLE_G2_BUILD" ]]; then
			sudo apt-get install -y wine
		fi
	else
		# prevent build.sh from re-doing all the steps again
		case "$TARGET" in
			"linux")
				sudo dpkg --add-architecture i386
				sudo apt-get update
				sudo apt-get install --no-install-recommends -y --force-yes cmake libsdl2-dev:i386 libsdl2-ttf-dev:i386 gcc-4.8 pkg-config:i386 g++-4.8-multilib gcc-4.8-multilib libjansson-dev:i386 libspeex-dev:i386 libspeexdsp-dev:i386 libcurl4-openssl-dev:i386 libcrypto++-dev:i386 clang
				download https://launchpad.net/ubuntu/+archive/primary/+files/libjansson4_2.7-1ubuntu1_i386.deb libjansson4_2.7-1ubuntu1_i386.deb
				download https://launchpad.net/ubuntu/+archive/primary/+files/libjansson-dev_2.7-1ubuntu1_i386.deb libjansson-dev_2.7-1ubuntu1_i386.deb
				sudo dpkg -i libjansson4_2.7-1ubuntu1_i386.deb
				sudo dpkg -i libjansson-dev_2.7-1ubuntu1_i386.deb
				sudo apt-get install -f
				;;
			"windows")
				sudo apt-get update
				sudo apt-get install -y --force-yes binutils-mingw-w64-i686 gcc-mingw-w64-i686 g++-mingw-w64-i686 cmake
				;;
			"docker32")
				docker pull openrct2/openrct2:32bit-only
				;;
			*)
				echo "unkown target $TARGET"
				exit 1
		esac
	fi
fi

download_libs
# mind the gap (trailing space)
if [[ $(uname) == "Darwin" ]]; then
	shasum -a 256 $cachedir/orctlibs.zip | cut -f1 -d\  > $libVFile
else
	sha256sum $cachedir/orctlibs.zip | cut -f1 -d\  > $libVFile
fi
echo "Downloaded library with sha256sum: $(cat $libVFile)"
# Local libs are required for all targets
install_local_libs

if [[ $TARGET == "windows" ]]; then
	download_sdl
	install_cross_tools
	install_pkg_config
# $TARGET == "windows"
fi