#!/bin/bash
#
#### $$VERSION$$ V0.94-0-gbdb50c8
# shellcheck disable=SC2016
#
# Easy Versioning in git:
#
# for setting your Version in git use e.g.:
# git tag -a v0.5 -m 'Version 0.5'
#
# Push tags upstream—this is not done by default:
# git push --tags
#
# # in case of a wrong tag remove it:
# git tag -d v0.5
#
# delete remote tag (eg, GitHub version)
# git push origin :refs/tags/v0.5
#
# Then use the describe command:
#
# git describe --tags --long
# This gives you a string of the format:
# 
# v0.5-0-gdeadbee
# ^    ^ ^^
# |    | ||
# |    | |'-- SHA of HEAD (first seven chars)
# |    | '-- "g" is for git
# |    '---- number of commits since last tag
# |
# '--------- last tag
#
# run this script to (re)place Version number in files
#

# magic to ensure that we're always inside the root of our application,
# no matter from which directory we'll run script
GIT_DIR=$(git rev-parse --git-dir 2>/dev/null)
if [ "$GIT_DIR" != "" ] ; then
	cd "$GIT_DIR/.." || exit 1
else
	echo "Sorry, no git repository $(pwd)" && exit 1
fi

unset IFS
# set -f # if you are paranoid use set -f to disable globbing

VERSION="$(git describe --tags --long)"
echo "Update to version $VERSION ..."

FILES="$(find ./*)"
[ "$1" != "" ] && FILES="$*"

for file in $FILES
do
	[ ! -f "$file" ] && continue
	#[ "$file" == "version" ] && continue
	echo -n " $file" >&2
	sed -i 's/^#### $$VERSION$$.*/#### \$\$VERSION\$\$ '"$VERSION"'/' "$file"
done
# try to compile README.txt
echo -n " README.txt" >&2
type -f pandoc >/dev/null && pandoc -s -f commonmark -M "title=Bashbot README" README.md >README.html
fold -s README.md >README.txt
echo " done."