#!/bin/bash

if [ $# -ne 3 ]; then
	echo "usage: $(basename $0) <packagename> <repo> <arch>"
	exit 1
fi

if [ -f "/etc/makepkg.conf" ]; then
	#Get some config info
	. /etc/makepkg.conf
else
	echo "/etc/makepkg.conf does not exist!"
	exit 1
fi
packagename="$1"
reponame="$2"
arch="$3"

##### Arch specific stuff. TODO make this configurable #####
srcpath="/home/aaron/public_html/sources/"
svnpath="file:///home/svn-packages/$packagename/"
############################################################

WORKDIR="/tmp/make-sourceball.$svnrepo.$UID"

cleanup() {
	# unlock
	rm -rf "$WORKDIR"
	[ "$1" ] && exit $1
}

ctrl_c() {
	echo "Interrupted" >&2
	cleanup 0
}

die() {
	echo "$*" >&2
	cleanup 1
}

##### Copied from makepkg #####

strip_url() {
    echo "$1" | sed 's|^.*://.*/||g'
}

create_srcpackage() {
	echo "Creating source package..."
	local comp_files="$BUILDSCRIPT"
	echo "   Adding: $BUILDSCRIPT"
    . $BUILDSCRIPT

	if [ "$install" != "" ]; then
		if [ -f $install ]; then
			echo "   Adding: install script '$install'"
			comp_files="$comp_files $install"
		else
			die "Install script '$install' not found."
		fi
	fi

	if [ -f ChangeLog ]; then
		echo "   Adding: ChangeLog"
		comp_files="$comp_files ChangeLog"
	fi

	local i
	for i in ${source[@]}; do
        i="$(strip_url "$i")"
		if [ -f $i ]; then
			echo "   Adding: $i"
			comp_files="$comp_files $i"
		fi
	done

	local pkg_file="${pkgname}-${pkgver}-${pkgrel}${SRCEXT}"

	# tar it up
	echo "Compressing source package"
	if ! /usr/bin/bsdtar -czf "$pkg_file" $comp_files; then
		die "Failed to create source package file."
	fi

    echo "Source package complete: $pkg_file"
    if [ ! -d "$srcpath" ]; then
        mkdir -p "$srcpath"
    fi
    cp $pkg_file "$srcpath"
}

trap ctrl_c 2
trap cleanup 0

/bin/mkdir -p "$WORKDIR"
cd "$WORKDIR"

echo "Creating Source tarball for $packagename ($reponame-$arch)"

if /usr/bin/svn checkout -N "$svnpath/repos/$reponame-$arch"; then
    cd "$reponame-$arch"
    if /usr/bin/makepkg -g; then
        create_srcpackage
    else #try the trunk, it may have updates to the source URL
        if /usr/bin/svn checkout -N "$svnpath/trunk"; then
            cd "trunk"
            if /usr/bin/makepkg -g; then
                create_srcpackage
            else
                die "Cannot get sources properly. Dying"
            fi
        fi
    fi
else
    die "Package '$packagename' does not exist in repo $reponame-$arch"
fi