#!/bin/sh

# Remove all files ignored by `git`, except the ones listed in $KEEP below
#
# `git clean` does not accept "-e" together with "-X",
# so the files to be kept are moved aside and then restored
#
# Usage: git clean-ignored [<git clean options>]

set -eu


# Keep this list in sync with the other two copies:
#  - the "-e" flags of `clean-untracked` in ~/.config/git/config
#  - the preview in ~/.local/bin/git-clean-all
KEEP=".env .python-version"

SUFFIX=".git-clean-ignored.bak"


# `git` runs scripts on the `$PATH` in the current directory,
# whereas it runs "!" aliases at the top level of the repository
cd "$(git rev-parse --show-toplevel)"


_restore() {
    for _file in $KEEP; do
        if [ -f "$_file$SUFFIX" ]; then
            mv "$_file$SUFFIX" "$_file"
        fi
    done
}


# Restore the kept files even if `git clean` fails or the user aborts
trap _restore EXIT HUP INT TERM


for _file in $KEEP; do
    if [ -f "$_file" ]; then
        mv "$_file" "$_file$SUFFIX"
    fi
done


git clean -X -d -f "$@"