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

OUT=${1:-./checkpoints}
mkdir -p "$OUT"

SCRIPT_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
REPO_ROOT=$(cd "$SCRIPT_DIR/.." && pwd)

find "$REPO_ROOT/checkpoint_shards" -name "*.tar" | sort | while read -r shard; do
  echo "Extracting $shard"
  tar -xf "$shard" -C "$OUT"
done

echo "Restored selected checkpoints to $OUT"