#!/bin/bash

version=0.10
program=${0##*/}
progdir=${0%/*}
if [ "$progdir" = "$program" ]; then progdir="."; fi
if [ "$progdir" = "." ]; then progdir="$PWD"; fi
parent=$(dirname $progdir)
if [ "$parent" = "." ]; then parent="$PWD"; fi

export LANG=C

# ----------------------------------------------------------------------
function usage() {
    cat <<EOF
NAME
	$program - Build a docker datatracker image.

SYNOPSIS
	$program [OPTIONS] ARGS

DESCRIPTION

	This script builds a debian-based docker image which has been
	set up with the dependencies needed to easily run the IETF
	datatracker in development mode.  It uses docker/Dockerfile;
	i.e., the Dockerfile in the same directory as this script.
	It assumes that the user has upload rights for the docker
	ietf/datatracker-environment repository, in order to push the
	image.

EOF
    echo -e "OPTIONS"
    if   [ "$(uname)" = "Linux" ]; then
        egrep "^[	]+[-][A-Za-z| -]+\*?\)[	]+[A-Za-z].+#" $0 | tr -s "\t|" "\t," | sed -r -e 's/\)[ \t]+([A-Z]+)=\$2[^#]*#/=\1\t/' -e 's/\)[^#]*#/\t/'
    else
        egrep "^[	]+[-][A-Za-z| -]+\*?\)[	]+[A-Za-z].+#" $0 | sed 's/\|.*\$2[^#]*#/	/'| sed -E 's/\|.*\)[^#]*#/	/'
    fi
    cat <<EOF

FILES

AUTHOR
	Written by Henrik Levkowetz, <henrik@levkowetz.com>

COPYRIGHT

	Copyright (c) 2016 IETF Trust and the persons identified as authors of
	the code. All rights reserved.  License 'Simplified BSD', as specified
	in http://opensource.org/licenses/BSD-3-Clause.
	
EOF

}

# ----------------------------------------------------------------------
function die() {
    echo -e "\n$program: error: $*" >&2
    exit 1
}

function note() { 
	if [ -n "$VERBOSE" ]; then echo -e "$*"; fi
}

# ----------------------------------------------------------------------
function version() {
	echo -e "$program $version"
}

# ----------------------------------------------------------------------
trap 'echo "$program($LINENO): Command failed with error code $? ([$$] $0 $*)"; exit 1' ERR


# ----------------------------------------------------------------------
# Option parsing

# Options
shortopts=ht:vV
longopts=help,tag=,verbose,version

# Default values
BRANCH=$(svn log -v ^/tags -l 2 | grep 'A /tags/[1-9]' | awk '{print $2}')
TAG=${BRANCH##*/}

if   [ "$(uname)" = "Linux" ]; then
    args=$(getopt -o "$shortopts" --long "$longopts" -n '$program' -- $SV "$@")
    if [ $? != 0 ] ; then die "Terminating..." >&2 ; exit 1 ; fi
    eval set -- "$args"
    sed="sed -r"
else
    # Darwin, BSDs
    args=$(getopt -o$shortopts $SV $*)
    if [ $? != 0 ] ; then die "Terminating..." >&2 ; exit 1 ; fi
    set -- $args
    sed="sed -E"
fi

while true ; do
    case "$1" in
	-h| --help)	usage; exit;;		# Show this help, then exit
	-t| --tag)	TAG=$2; shift;;		# Use this docker image tag, instead of the latest svn tags name
	-v| --verbose)	VERBOSE=1;;		# Be more talkative
	-V| --version)	version; exit;;		# Show program version, then exit
	--)		shift; break;;
	*) die "Internal error, inconsistent option specification: '$1'";;
    esac
    shift
done

# ----------------------------------------------------------------------
# The program itself

if [ "$(uname)" != "Linux" ]; then
    if [ -n "$(type -p docker-machine)" ]; then
	machine=$(type -p docker-machine)
    else
	die "Could not find boot2docker or docker-machine -- you need to set one of those before running this script."
    fi
else
    die "Didn't expect to run this script on Linux -- are you inside docker?"
fi

docker rmi -f ietf/datatracker-environment:trunk
docker build -t ietf/datatracker-environment:$TAG docker/
docker tag $(docker images -q | head -n 1) ietf/datatracker-environment:latest
docker push ietf/datatracker-environment:latest
docker push ietf/datatracker-environment:$TAG