#!/bin/bash
# shellcheck disable=SC2002

set -eu
set -o pipefail
IFS=$'\n\t'

# print useful message on failure
trap 's=$?; echo >&2 "$0: Error on line "$LINENO": $BASH_COMMAND"; exit $s' ERR

# shellcheck disable=SC2034
DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

cd "$DIR"

# - Check if the file .diachron-version exists; save its value in a variable
#   named old_diachron_version

# - Check if the repository is dirty; if there are any files that git knows
#   about that have been changed but not committed, abort with a message

# - Get the current commit and store it in a variable

# - Perform a two checkouts of
#   https://gitea.philologue.net/philologue/diachron, each in its own
#   temporary directory.  We'll call one "old" and one "new"

# - In old, check out $old_diachron_version; in our working application
#   directory, delete all of the files in file-list using git rm

# - In new, check out whatever was passed as argv[1]

# - Copy all of the files in file-list to the working application and stage
#   them with git add

# - Commit

# - Should we run sync.sh or should we advise the user to run sync.sh?