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

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source "$SCRIPT_DIR/common.sh"
prepare_dataset_root

BUCKET="${BUCKET:-hf://buckets/lekdan/osu-everything}"
BUCKET_ID="${BUCKET_ID:-lekdan/osu-everything}"
UPLOAD="${UPLOAD:-1}"
LATEST_REBUILD_WORKERS="${LATEST_REBUILD_WORKERS:-8}"
COMPACT_TARGET_ROWS="${COMPACT_TARGET_ROWS:-1000000}"
COMPACT_BATCH_SIZE="${COMPACT_BATCH_SIZE:-65536}"
COMPACT_MIN_FILES="${COMPACT_MIN_FILES:-2}"
COMPACT_WORKERS="${COMPACT_WORKERS:-4}"
COMPACT_CLEAN_STALE_SCRATCH="${COMPACT_CLEAN_STALE_SCRATCH:-1}"

mkdir -p logs
LOG="logs/compact-metadata-v1-$(date -u +%Y%m%dT%H%M%SZ).log"
exec > >(tee -a "$LOG") 2>&1

echo "started_at=$(date -u +%Y-%m-%dT%H:%M:%SZ)"
echo "source_root=${SOURCE_ROOT}"
echo "dataset_root=${DATASET_ROOT}"
echo "bucket=${BUCKET}"
echo "upload=${UPLOAD}"
echo "latest_rebuild_workers=${LATEST_REBUILD_WORKERS}"
echo "compact_target_rows=${COMPACT_TARGET_ROWS}"
echo "compact_batch_size=${COMPACT_BATCH_SIZE}"
echo "compact_min_files=${COMPACT_MIN_FILES}"
echo "compact_workers=${COMPACT_WORKERS}"

active="$(pgrep -af '[o]su_fetcher|[o]su_indexer|[i]ngest_osz|[r]ebuild_latest_snapshot|[h]f( sync| buckets sync)|[u]pdate_maps_v1' || true)"
if [ -n "$active" ]; then
  echo "refusing to compact while another pipeline process is active:" >&2
  echo "$active" >&2
  exit 65
fi

if [ "$COMPACT_CLEAN_STALE_SCRATCH" = "1" ]; then
  rm -rf .scratch/metadata-compaction
fi

export HF_HUB_ENABLE_HF_TRANSFER=1
export HF_XET_HIGH_PERFORMANCE=1
export HF_XET_CLIENT_AC_INITIAL_UPLOAD_CONCURRENCY="${HF_XET_CLIENT_AC_INITIAL_UPLOAD_CONCURRENCY:-4}"
export HF_XET_CLIENT_AC_MAX_UPLOAD_CONCURRENCY="${HF_XET_CLIENT_AC_MAX_UPLOAD_CONCURRENCY:-8}"
export HF_XET_CLIENT_RETRY_MAX_DURATION="${HF_XET_CLIENT_RETRY_MAX_DURATION:-600}"

"$PYTHON" "$PY_SOURCE_ROOT/python/validate_compact_v1.py" --repo-root "$PY_DATASET_ROOT" --max-data-files 10000

"$PYTHON" "$PY_SOURCE_ROOT/python/compact_metadata_v1.py" \
  --repo-root "$PY_DATASET_ROOT" \
  --target-rows "$COMPACT_TARGET_ROWS" \
  --batch-size "$COMPACT_BATCH_SIZE" \
  --min-files "$COMPACT_MIN_FILES" \
  --workers "$COMPACT_WORKERS"

"$PYTHON" "$PY_SOURCE_ROOT/python/rebuild_latest_snapshot.py" --repo-root "$PY_DATASET_ROOT" --workers "$LATEST_REBUILD_WORKERS"
"$PYTHON" "$PY_SOURCE_ROOT/python/validate_compact_v1.py" --repo-root "$PY_DATASET_ROOT" --max-data-files 10000

if [ "$UPLOAD" = "1" ]; then
  "$HF" sync data "${BUCKET}/data" --delete
  "$HF" sync schemas "${BUCKET}/schemas" --delete
  "$HF" buckets info "$BUCKET_ID"
fi

echo "finished_at=$(date -u +%Y-%m-%dT%H:%M:%SZ)"