Pre commit and only increment while release

pre-commit

#!/bin/sh
FILE="${PWD}/.php_cs.service.php"
COMMAND="/usr/bin/php-cs-fixer"
CONFIG_URL="https://gist.githubusercontent.com/ppabcd/d0184b7ba0f05b9ed59bd0d12753a5a6/raw/f76e893696b205278d40412f6fd4a2e8e78b399f/.php_cs.service.php"

# Version and Release Manager
VERSION_FILE="${PWD}/.version"
RELEASE="${PWD}/release"
VERSION="0.1.0"
TEXT_VERSION="v0.1.0"

if [ -f "$FILE" ]; then
    echo "$FILE exists."
else
    echo "$FILE does not exits.\n"
    echo "Downloading config file."
    wget -c $CONFIG_URL
fi
if [ -f "$COMMAND" ]; then
    echo "$COMMAND exists."
else
    echo "$COMMAND does not exist."
    wget https://cs.symfony.com/download/php-cs-fixer-v2.phar -O php-cs-fixer
    [ "$UID" -eq 0 ] || exec sudo chmod +x php-cs-fixer && sudo mv php-cs-fixer /usr/bin/php-cs-fixer
fi

if [ -f "$RELEASE" ]; then
    if [ -f "$VERSION_FILE" ]; then
        # Read file
        VERSION=$(cat "$VERSION_FILE")
        # delete v from text
        VERSION=${VERSION#v}
        # increment version
        VERSION=$(echo "$VERSION" | awk -F. '{$NF+=1; print}')
        # replace space to .
        VERSION=$(echo "$VERSION" | sed 's/ /./g')
        # write version to file
        TEXT_VERSION="v$VERSION"
        echo "${TEXT_VERSION}" >"$VERSION_FILE"
        echo "Version: $TEXT_VERSION"
    else
        echo "Version file does not exist. Generate v0.1.0"
        echo "v0.1.0" >"$VERSION_FILE"
    fi

    echo "Release file exists. Delete it."
    git add "$VERSION_FILE"
    git tag -a "${TEXT_VERSION}" -m "Release $TEXT_VERSION"
    git push origin "${TEXT_VERSION}"
    rm "$RELEASE"
fi

/usr/bin/php-cs-fixer fix . --config=$FILE
for file in $(git diff --cached --name-only | grep -E '\.(php)$')
  do
    $(git add "$file")
    echo "Added updated file : ${file}"
  done
exit 0