#!/bin/bash
#
# vim: expandtab sw=4 ts=4 sts=4:
#
# This requires Bash for the search and replace substitution to escape dots

# Do not run as CGI
if [ -n "$GATEWAY_INTERFACE" ] ; then
    echo 'Can not invoke as CGI!'
    exit 1
fi

# Fail on undefined variables
set -u
# Fail on failure
set -e

printHelp () {
    echo
    echo "Please pass the new version number as a command line argument such as"
    echo "$0 -v 5.0.0-dev"
    echo
}

if [ $# -eq 0 ]
then
    printHelp
   exit 1
fi

if [ "$1" = '-v' ]
then
    newVersion=$2
else
    printHelp
    exit 2
fi

# If we're in the scripts directory, we need to do all our work up a directory level
if [ "$(basename "$(pwd)")" = 'scripts' ]
then
    dir='../'
else
    dir=''
fi

# There are half a dozen ways to do this, including individually recreating the line of
# each file (search for 'version =' in conf.py and replace it with 'version = 5.0.0-dev'
# for instance), and while that's more precise this should work with less to fix if a line changes.
# This method wasn't selected for any particular strength.

oldVersion="$(grep 'version =' ${dir}doc/conf.py | cut -d "'" -f2)"

echo "Changing from ${oldVersion} to ${newVersion}..."

# Escape the dot for sed
oldVersion=${oldVersion//./\.}
newVersion=${newVersion//./\.}

for f in README doc/conf.py package.json
do
    if ! grep --quiet "${oldVersion}" "${dir}${f}"
    then
      # There may be a better way to test for a failure of the substitution itself, such as using the 'q' directive with sed
      # See https://stackoverflow.com/questions/15965073/return-code-of-sed-for-no-match
      echo "FAILED! Substitution string ${oldVersion} not found in ${dir}${f}"
    fi
    sed -i "s/${oldVersion}/${newVersion}/g" "${dir}${f}"
done

echo
echo "- Next, you need to manually edit ChangeLog to manually change the version number and set the release date, and verify the changes with 'git diff'."
echo "- You will probably want to call: \"./scripts/console set-version ${newVersion}\" afterwards"
echo "- You should check if you need to change the composer.json file and the theme.json file for each bundled theme."
echo "  To change the composer.json file you can call something like: \"composer config extra.branch-alias.dev-master \"5.2.x-dev\"\""
echo "- Suggested commit message: Prepare for version ${newVersion}"