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#!/bin/bash

# works with a file called VERSION in the current directory,
# the contents of which should be a semantic version number
# such as "1.2.3"

# this script will display the current version, automatically
# suggest a "minor" version update, and ask for input to use
# the suggestion, or a newly entered value.

# once the new version number is determined, the script will
# commit the version change.
#
# Hat tip: https://gist.github.com/pete-otaqui/4188238

PHP_VERSION_FILE=app_version.php
PHP_VERSION_ENV_NAME=APP_VERSION

if [ -f VERSION ]; then
    BASE_STRING=`cat VERSION`
    BASE_LIST=(`echo $BASE_STRING | tr '.' ' '`)
    V_MAJOR=${BASE_LIST[0]}
    V_MINOR=${BASE_LIST[1]}
    V_PATCH=${BASE_LIST[2]}
    echo "Current version : $BASE_STRING"
    V_MINOR=$((V_MINOR + 1))
    V_PATCH=0
    SUGGESTED_VERSION="$V_MAJOR.$V_MINOR.$V_PATCH"
    read -p "Enter a version number [$SUGGESTED_VERSION]: " INPUT_STRING
    if [ "$INPUT_STRING" = "" ]; then
        INPUT_STRING=$SUGGESTED_VERSION
    fi
    echo "Will set new version to be $INPUT_STRING"
    echo $INPUT_STRING > VERSION
    echo -e "<?php\ndefine('$PHP_VERSION_ENV_NAME', '$INPUT_STRING');" > $PHP_VERSION_FILE
    git add VERSION $PHP_VERSION_FILE
    git commit -m "Version bump to $INPUT_STRING"

else
    echo "Could not find a VERSION file"
    read -p "Do you want to create a version file and start from scratch? [y] " RESPONSE
    if [ "$RESPONSE" = "" ]; then RESPONSE="y"; fi
    if [ "$RESPONSE" = "Y" ]; then RESPONSE="y"; fi
    if [ "$RESPONSE" = "Yes" ]; then RESPONSE="y"; fi
    if [ "$RESPONSE" = "yes" ]; then RESPONSE="y"; fi
    if [ "$RESPONSE" = "YES" ]; then RESPONSE="y"; fi
    if [ "$RESPONSE" = "y" ]; then
        echo "0.1.0" > VERSION
        echo -e "<?php\ndefine('$PHP_VERSION_ENV_NAME', '0.1.0');" > $PHP_VERSION_FILE
        git add VERSION $PHP_VERSION_FILE
        git commit -m "Added VERSION files, Version bump to 0.1.0"
    fi

fi