#!/bin/bash
#emacs: -*- mode: shell-script; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: t -*- 
#ex: set sts=4 ts=4 sw=4 noet:
#
#  A helper to freeze (and possibly downgrade) versions of specified containers.
#
#  Example invocation:
#
#     freeze_versions bids-mriqc=0.15.0 bids-fmriprep=1.4.1 bids-aa
#
# COPYRIGHT: Yaroslav Halchenko 2019
#
# LICENSE: MIT
#
#  Permission is hereby granted, free of charge, to any person obtaining a copy
#  of this software and associated documentation files (the "Software"), to deal
#  in the Software without restriction, including without limitation the rights
#  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#  copies of the Software, and to permit persons to whom the Software is
#  furnished to do so, subject to the following conditions:
#
#  The above copyright notice and this permission notice shall be included in
#  all copies or substantial portions of the Software.
#
#  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
#  THE SOFTWARE.
#

PS4=+
set -eu

# from repronim/simple_workflow Simple_Prep_docker
# a little helper since sed on OSX does not have sed -i
# for in-place modifications.  Note that filename here comes first
# just to ease scripting
sed-i () {
  filename=$1
  tfilename=$(mktemp -t sed_replace.XXXXXXXXX)
  shift
  sed "$@" "$filename" >| "$tfilename"
  mv "$tfilename" "$filename"
}

cd "$(dirname "$0")/.."

save_ds=
frozen=

for arg in "$@"; do
	case "$arg" in
		--save-dataset=*)
			save_ds="${arg#*=}";
			continue;;
	esac
	frozen="$frozen $arg"
	img=${arg%%=*}
	if [ "$img" != "$arg" ]; then
		ver=${arg#*=}
		echo "I: $img -> $ver"
		imgpath="images/${img%%-*}/${img}--${ver}.sing"
		# Check if exists! we cannot freeze to unknown.  There is no easy
		# check if file exists as a symlink or not
		if ! /bin/ls -d "$imgpath" &>/dev/null ; then
			echo "E: there is no $imgpath .  Available images for the app are:"
			/bin/ls -1 "images/${img%%-*}/${img}--"* | sed -e 's,^,  ,g'
			exit 1
		fi
		git config -f .datalad/config --replace-all "datalad.containers.$img.image" "$imgpath"
	else
		# freeze to current
		imgpath=$(git config -f .datalad/config "datalad.containers.$img.image")
	fi
	# and we would add the comment so that upon upgrade there for sure would be
	# a conflict needed to be consciousely resolved (or -S ours used)
	sed-i .datalad/config -e "s,$imgpath\([ \\t].*\)*$,$imgpath  # frozen,g"
done

if [[ -n "$save_ds" ]]; then
	datalad save -d"$save_ds" -m "Freeze container versions $frozen" .datalad/config
fi