#!/bin/bash
# $Id$
# Written by slakmagik <jsun freeshell org> (usual symbols in spaces)
# Released under the WTFPL

script=${0##*/}

# USER-MODIFIABLE VARIABLES
# this needs to be where the checked out svn directory is. The 'sbopkg' part
# is 'sbopkg-read-only' if doing a default checkout and is the only thing that
# is likely to need changing.
repo="/home/slackbuilds/sbopkg"
remote_repo="http://sbopkg.googlecode.com/svn/trunk/"
export OUTPUT="${OUTPUT:-/tmp}"

usage() {
cat << EOF
$script: sbopkg subversion package maker usage: $script [-b] | [-i] | [-s]

-b build a package from local subversion repository
-i install the package
-s syncs the local repo to the remote one

No arguments is equivalent to -bis: $script checks out the latest revision to
the subversion repository and builds and installs a package from it.
EOF
exit
}

if (( $# == 0 )); then
    build="yes"
    inst="yes"
    sync="yes"
else
    build="no"
    inst="no"
    sync="no"
fi

while getopts :bis opt; do
    case $opt in
        b) build="yes" ;;
        i) inst="yes" ;;
        s) sync="yes" ;;
        *) usage ;;
    esac
done

if [[ $sync == yes ]]; then
    if [ -w $repo/.. ]; then
        svn checkout $remote_repo $repo ||
            ( echo "$script: checkout failed" 1>&2; exit 1 )
    else
        printf "$script: $repo is not writable.\n" 1>&2
        printf "Change your privileges or the value of the \"repo\" " 1>&2
        printf "variable.\n" 1>&2
        exit 1
    fi
fi

# this allows for a version mismatch if someone builds a package, doesn't
# install it, then syncs their repo to a newer version, then does install the
# old package. But, as the doctor said to the guy who complained that it hurt
# when he did that, don't DO that.
if [[ $build == yes || $inst == yes ]]; then
    # this is for testing unaltered svn versions
    svn_script="$repo/src/usr/bin/sbopkg"
    if [ -r $svn_script ]; then
        export VERSION="svn$(grep -m1 '$Id.*$' $svn_script |
            sed 's/.* sbopkg \([^ ]*\).*/\1/')"
        # I use this for testing patches made against the svn repo
        #export VERSION=$(date "+%Y%m%d_%H%M")
    else
        echo "$script: unable to find $svn_script." 1>&2
        echo "Please check your repository." 1>&2
        exit 1
    fi

    if [[ $OUTPUT =~ "$repo/(sbopkg-$VERSION|root-tools)" ]]; then
        printf "$script: the OUTPUT variable is set to a path that will " 1>&2
        printf "be removed.\n" 1>&2
        printf "Please alter the value of the variable.\n" 1>&2
        exit 1
    fi

    # technically, you only need to be root to install the packages and not to
    # build them, but standard slackbuilds don't build as unprivileged user
    # anyway
    output_pkg=$OUTPUT/sbopkg-$VERSION-noarch-1_cng.tgz
    su -c "(
        if [[ $build == yes ]]; then
            cd $repo
            if [ -d sbopkg-$VERSION ] || [ -d root-tools ]; then
                echo \"$script: director(y|ies) exist\" 1>&2; exit 1
            fi
            cp -r src sbopkg-$VERSION
            cp -r tools root-tools
            tar --exclude='*.svn*' --exclude='*.rej' \
                -czvf $repo/root-tools/sbopkg-$VERSION.tar.gz sbopkg-$VERSION
            cd $repo/root-tools
            sh sbopkg.SlackBuild
            cd $repo
            rm -rf root-tools
            rm -rf sbopkg-$VERSION
        fi
        if [[ $inst == yes ]]; then
            if [ -r $output_pkg ]; then
                upgradepkg --install-new --reinstall $output_pkg
            else
                echo \"$script: $output_pkg not found.\" 1>&2; exit 1
            fi
        fi
    )"
fi