#!/usr/bin/env bash
set -Eeuo pipefail

trap 'echo "Error on line $LINENO while writing Gitea dump" >&2' ERR

ensure_writable_dir() {
	local dir="$1"
	mkdir -p "$dir"
	if [[ ! -d "$dir" || ! -w "$dir" ]]; then
		echo "Output directory is not writable: $dir" >&2
		exit 1
	fi
}

TS="$(date +%F_%H%M%S)"
OUT="/srv/backups/gitea/dumps"
ensure_writable_dir "$OUT"
artifact="$OUT/gitea-dump-$TS.zip"

docker exec gitea sh -lc "gitea dump -c /data/gitea/conf/app.ini -f /tmp/gitea-dump-$TS.zip"
docker cp "gitea:/tmp/gitea-dump-$TS.zip" "$OUT/"
docker exec gitea rm -f "/tmp/gitea-dump-$TS.zip"

if [[ ! -s "$artifact" ]]; then
	echo "Backup artifact missing or empty: $artifact" >&2
	exit 1
fi

echo "Wrote: $artifact"