configure

#!/bin/bash

debian=0
darwin=0
branch=""
binary_name=p2p
maintainer="Travis CI"
maintainer_email="travis@subut.ai"
debian_release="trusty"
postfix=""

showhelp()
{
cat << ENDHELP

usage: configure [options]
Configure p2p packaging on linux/darwin

Options:
    --debian
        Build debian package

    --darwin
        Build darwin package

    --branch=<branch>
        Specify a target branch

    --help
        Display this help screen
ENDHELP
}

getsource()
{
    rm -rf /tmp/p2p-source
    git clone https://github.com/subutai-io/p2p.git /tmp/p2p-source
    dir=`pwd`
    cd /tmp/p2p-source
    if [ "$branch" != "HEAD" ]; then
        git checkout -B $branch
        git pull origin $branch
    else
        tag=`git describe --abbrev=0`
        git checkout tags/$tag
    fi
    cd $dir
}

getbinary()
{
    if [ "$branch" == "master" ]; then
        local cdnPrefix="mastercdn"
    elif [ "$branch" == "dev" ]; then
        local cdnPrefix="devcdn"
    else
        local cdnPrefix="cdn"
    fi
    curl -o /tmp/$binary_name -fsSL https://$cdnPrefix.subut.ai:8338/kurjun/rest/raw/get?name=$binary_name
    chmod +x /tmp/$binary_name
}

generate_changelog()
{
    if [ "$branch" == "master" ]; then
        postfix="-master"
    elif [ "$branch" == "dev" ]; then
        postfix="-dev"
    fi
    rm -f /tmp/deb-changelog.tmp
    started=0
    while IFS='' read -r line || [[ -n "$line" ]]; do
        st=${line:0:2}
        if [ "$st" == "##" ]; then
            if [ $started -eq 1 ]; then
                date_formatted=`date -d"$release_date" "+%a, %d %b %Y %H:%M:%S %z"`
                echo "" >> /tmp/deb-changelog.tmp
                echo " -- $maintainer <$maintainer_email>  $date_formatted" >> /tmp/deb-changelog.tmp
                echo "" >> /tmp/deb-changelog.tmp
                started=0
            fi
            started=1
            release_date=`echo $line | cut -d "]" -f2 | sed -e 's/^[[:space:]]*//'`
            version_num=`echo $line | cut -d "[" -f2 | cut -d "]" -f1`
            echo "subutai-p2p$postfix ($version_num$postfix-0ubuntu1~$debian_release) $debian_release; urgency=medium" >> /tmp/deb-changelog.tmp
            echo "" >> /tmp/deb-changelog.tmp
        elif [ "$st" == "* " ]; then
            echo "  $line" >> /tmp/deb-changelog.tmp
        fi
    done < /tmp/p2p-source/CHANGELOG
    if [ $started -eq 1 ]; then
        date_formatted=`date -d"$release_date" "+%a, %d %b %Y %H:%M:%S %z"`
        echo "" >> /tmp/deb-changelog.tmp
        echo " -- $maintainer <$maintainer_email>  $date_formatted" >> /tmp/deb-changelog.tmp
        echo "" >> /tmp/deb-changelog.tmp
        started=0
    fi
    mv /tmp/deb-changelog.tmp linux/debian/changelog
}

generate_control() 
{
    if [ "$branch" == "master" ]; then
        postfix="-master"
    elif [ "$branch" == "dev" ]; then
        postfix="-dev"
    fi
    local controlFile=linux/debian/control
    echo "Source: subutai-p2p$postfix" > $controlFile
    echo "Section: net" >> $controlFile
    echo "Priority: optional" >> $controlFile
    echo "Maintainer: $maintainer <$maintainer_email>" >> $controlFile
    echo "Build-Depends: git (>=2), golang (>=1.9), debhelper (>=9)" >> $controlFile
    echo "Standards-Version: 3.9.6" >> $controlFile
    echo "Homepage: https://github.com/subutai-io/p2p" >> $controlFile
    echo "" >> $controlFile
    echo "Package: subutai-p2p$postfix" >> $controlFile
    echo "Architecture: any" >> $controlFile
    echo "Depends: \${shlibs:Depends}, \${misc:Depends}" >> $controlFile
    echo "Description: P2P Networking for Subutai" >> $controlFile
}

generate_postinst() 
{
    local postinstFile=linux/debian/postinst
    echo "#/bin/sh" > $postinstFile
    echo "" >> $postinstFile
    echo "if [ -e /usr/bin/p2p ]; then" >> $postinstFile
	echo "rm -f /usr/bin/p2p" >> $postinstFile
    echo "fi" >> $postinstFile
    echo "ln -s /opt/subutai/bin/p2p /usr/bin/p2p" >> $postinstFile
    echo "systemctl enable p2p.service" >> $postinstFile
    echo "systemctl restart p2p.service" >> $postinstFile
}

while [ $# -ge 1 ]; do
    case "$1" in
        --debian)
            debian=1 ;;
        --darwin)
            debian=1 ;;
        --branch=*)
            branch="`echo ${1} | awk '{print substr($0,10)}'`" ;;
        --help)
            showhelp
            exit 4
            ;;
        *) 
            echo "Bad argument: $1"
            showhelp
            exit 3
            ;;
    esac

    shift
done

if [ $debian -eq 1 ]; then
    echo "Configuring for debian"
    getsource
    getbinary
    generate_changelog
    generate_control
    generate_postinst
    exit 0
fi

if [ $darwin -eq 1 ]; then
    echo "Configuring for darwin"
    binary_name=p2p_osx
    exit 0
fi
echo "Target was not specified"
showhelp
exit 3