#! /bin/bash
# vim: set tabstop=4 shiftwidth=4 expandtab filetype=sh:

# download and install a2server tools:
# mkatinit, mkvolinfo, afptype, afpsync, aliases, nulib2

# Ensure URL we'll use ends in a /
case "$A2SERVER_SCRIPT_URL" in
	*/) scriptURL="$A2SERVER_SCRIPT_URL" ;;
	*) scriptURL="${A2SERVER_SCRIPT_URL:-http://ivanx.com/a2server}/" ;;
esac
case "$A2SERVER_BINARY_URL" in
	*/) binaryURL="$A2SERVER_BINARY_URL" ;;
	*) binaryURL="${A2SERVER_BINARY_URL:-http://ivanx.com/a2server/files}/" ;;
esac
useExternalURL=1
[[ $A2SERVER_NO_EXTERNAL ]] && useExternalURL=

debianVersion=$(cat /etc/debian_version 2> /dev/null)
isRpi=
arch=
if [[ -f /usr/bin/raspi-config ]]; then
    isRpi=1
    arch='rpi'
elif lsb_release -a 2> /dev/null | grep -q 'Distributor ID:.Debian' && [[ $(cut -c 1 <<< $debianVersion) -ge "7" ]]; then
    uname_m="$(uname -m)"
    if [[ $uname_m == "i686" ]]; then
        arch='debian_x86'
    elif [[ $uname_m == "x86_64" ]]; then
        arch='debian_x64'
    fi
fi

debianName=
if [[ $debianVersion ]]; then
    debianMajor=$(cut -c 1-2 <<< $debianVersion)
    if [[ $debianMajor == "8." ]]; then
        debianName="jessie"
    elif [[ $debianMajor == "7." ]]; then
        debianName="wheezy"
    else
        debianName="unknown"
    fi
fi

echo "A2SERVER: Installing A2SERVER tools..."

# delete older nulib2 which doesn't correctly handle zero-length forks in GSHK-created archives
if hash nulib2 &> /dev/null; then
    nulib2version=$(nulib2 | sed -n 2p | sed 's|^.*v\([0-9]\)\.\([0-9]\)\.\([0-9]\).*$|\1\2\3|' 2> /dev/null)
    if (( $nulib2version < 310 )); then
        sudo apt-get -y purge nulib2 &> /dev/null
        sudo rm $(command -v nulib2) &> /dev/null
    fi
fi

if ! hash nulib2 &> /dev/null; then

    echo "A2SERVER: Installing nulib2..."

    cd /tmp
    if [[ $arch && ! -f /tmp/a2server-compileAlways ]]; then
        { wget -qO- "${binaryURL}precompiled/nulib2-3.1.0a1-${arch}.tgz" | sudo tar Pzx; } &> /dev/null
    fi
        
    if ! hash nulib2 &> /dev/null; then

        if [[ ! -f /tmp/a2server-packageReposUpdated ]]; then
            # prepare for installing packages
            sudo apt-get -y update
            touch /tmp/a2server-packageReposUpdated
        fi

        # Dependencies: build-dep for nulib
        sudo apt-get -y install build-essential zlib1g-dev
        sudo apt-get -y clean

        cd /tmp
        rm -rf /tmp/nulib2 &> /dev/null
        mkdir /tmp/nulib2
        cd /tmp/nulib2
        if [[ $useExternalURL ]]; then
            wget -q -O nulib2-3.1.0a1.zip "https://github.com/fadden/nulib2/archive/51af83986cd5798daa7e0d82a161c9d3963c72bc.zip"
            unzip nulib2-3.1.0a1.zip 2> /dev/null
            rm nulib2-3.1.0a1.zip &> /dev/null
        fi
        if [ ! -d nulib2* ]; then
            wget -q -O nulib2-3.1.0a1.zip "${binaryURL}external/source/nulib2-3.1.0a1.zip"
            unzip nulib2-3.1.0a1.zip 2> /dev/null
            rm nulib2-3.1.0a1.zip &> /dev/null
        fi
        cd nulib2*
        cd nufxlib
        ./configure
        make
        sudo make install
        cd ../nulib2
        ./configure
        make
        sudo make install
        cd
        rm -rf /tmp/nulib2
    fi

else
    echo "A2SERVER: Nulib2 has already been installed."
fi

# download and install The Unarchiver, for expanding Apple disk images
# http://wakaba.c3.cx/s/apps/unarchiver.html

if ! hash unar &> /dev/null; then

    echo "A2SERVER: Installing The Unarchiver..."

    if [[ ! -f /tmp/a2server-packageReposUpdated ]]; then
        # prepare for installing packages
        sudo apt-get -y update
        touch /tmp/a2server-packageReposUpdated
    fi

    # jessie and later: Just use the unar package
    if [[ $debianName == "jessie" ]]; then
        sudo apt-get -y install unar
        sudo apt-get clean
    fi
    
    if ! hash unar &> /dev/null; then
        if [[ $arch && ! -f /tmp/a2server-compileAlways ]]; then
            # Dependencies: for unar
            sudo apt-get -y install libgnustep-base1.22
            sudo apt-get clean
            { wget -qO- "${binaryURL}precompiled/unar-${arch}_${debianName}.tgz" | sudo tar Pzx; } &> /dev/null
        fi

        # If all else fails, compile from source.
        if ! hash unar &> /dev/null; then

            # Dependencies: build-deps for unar
            sudo apt-get -y install build-essential libgnustep-base-dev libz-dev libbz2-dev libssl-dev libicu-dev unzip
            sudo apt-get clean

            rm -rf /tmp/unar &> /dev/null
            mkdir /tmp/unar
            cd /tmp/unar
            if [[ $useExternalURL ]]; then
                wget -O unar-1.8.1.zip https://github.com/incbee/Unarchiver/archive/unar-1.8.1.zip
                unzip -o unar-1.8.1.zip &> /dev/null
            fi
            if [ ! -d *Unarchiver*/XADMaster ]; then # need single bracket for glob
                wget -O unar-1.8.1.zip ${binaryURL}external/source/unar-1.8.1.zip
                unzip -o unar-1.8.1.zip &> /dev/null
            fi
            cd *Unarchiver*/XADMaster
            make -f Makefile.linux
            sudo mv lsar unar /usr/local/bin
            cd ../Extra
            sudo mv lsar.1 unar.1 /usr/local/man/man1
            cd
            rm -rf /tmp/unar
        fi
        sudo mandb &> /dev/null
    fi
else
    echo "A2SERVER: The Unarchiver has already been installed."
fi

if ! hash unzip &> /dev/null; then
    echo "A2SERVER: Installing unzip..."
    if [[ ! -f /tmp/a2server-packageReposUpdated ]]; then
        # prepare for installing packages
        sudo apt-get -y update
        touch /tmp/a2server-packageReposUpdated
    fi

    # Dependencies: unzip
    sudo apt-get -y install unzip
    sudo apt-get clean
else
    echo "A2SERVER: unzip has already been installed."
fi

sudo wget -q -O /usr/local/bin/afpsync "${scriptURL}scripts/tools/afpsync.txt"
sudo chmod ugo+x /usr/local/bin/afpsync
sudo wget -q -O /usr/local/bin/afptype "${scriptURL}scripts/tools/afptype.txt"
sudo chmod ugo+x /usr/local/bin/afptype
sudo wget -q -O /usr/local/bin/mkatinit "${scriptURL}scripts/tools/mkatinit.txt"
sudo chmod ugo+x /usr/local/bin/mkatinit
sudo wget -q -O /usr/local/bin/mkvolinfo "${scriptURL}scripts/tools/mkvolinfo.txt"
sudo chmod ugo+x /usr/local/bin/mkvolinfo
sudo wget -q -O /usr/local/bin/cppo "${scriptURL}scripts/tools/cppo.txt"
sudo chmod ugo+x /usr/local/bin/cppo
sudo wget -q -O /usr/local/etc/a2server-help.txt "${scriptURL}scripts/tools/a2server-help.txt"
sudo wget -q -O /usr/local/etc/a2server-aliases "${scriptURL}scripts/tools/a2server-aliases.txt"
sudo wget -q -O /usr/local/etc/a2serverrc "${scriptURL}scripts/tools/a2serverrc.txt"

# 1.3.0: a2serverrc is now called from /etc/bash.bashrc,
#   which in turn calls a2server-aliases
grep 'a2server-aliases' /etc/bash.bashrc > /dev/null && \
sudo sed -i 's/a2server-aliases/a2serverrc/' /etc/bash.bashrc
grep 'a2serverrc' /etc/bash.bashrc > /dev/null || \
echo "source /usr/local/etc/a2serverrc" | sudo tee -a /etc/bash.bashrc > /dev/null

motd="/etc/motd"
if [[ ! $(grep A2SERVER $motd) ]]; then
    echo | sudo tee -a $motd > /dev/null
    echo "Type 'system-shutdown' to turn off A2SERVER." | sudo tee -a $motd > /dev/null
    echo "Type 'a2server-setup' to configure network boot." | sudo tee -a $motd > /dev/null
    echo "Type 'a2server-help' for a list of other commands." | sudo tee -a $motd > /dev/null
    echo | sudo tee -a $motd > /dev/null
fi