#!/bin/bash

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

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

upstream=https://gitea.philologue.net/philologue/diachron
cache_dir="$HOME/.cache/diachron/v1/repositories"
cached_repo="$cache_dir/diachron.git"

mkdir -p "$cache_dir"

if [ -d "$cached_repo" ]; then
    echo "Updating cached repository..."
    git -C "$cached_repo" fetch --prune origin
else
    echo "Creating cached repository..."
    git clone --mirror "$upstream" "$cached_repo"
fi