#!/usr/bin/env bash
#SBATCH --job-name=download
#SBATCH --nodes=1
#SBATCH --ntasks=1
#SBATCH --cpus-per-task=1
#SBATCH --mem=4G
#SBATCH --time=04:00:00
#SBATCH --output=%x_%A_%a.out
#SBATCH --error=%x_%A_%a.err

set -euo pipefail

ROOT_DIR="${ROOT_DIR:-/home/sf895/SignVerse-2M}"
RUNTIME_ROOT="${RUNTIME_ROOT:-/home/sf895/SignVerse-2M-runtime}"
STATE_ROOT="${STATE_ROOT:-/home/sf895/SignVerse-2M-runtime}"
CONDA_SH="${CONDA_SH:-/home/sf895/miniconda3/etc/profile.d/conda.sh}"
CONDA_ENV="${CONDA_ENV:-signx2}"
SOURCE_METADATA_CSV="${SOURCE_METADATA_CSV:-$RUNTIME_ROOT/SignVerse-2M-metadata_ori.csv}"
OUTPUT_METADATA_CSV="${OUTPUT_METADATA_CSV:-$RUNTIME_ROOT/SignVerse-2M-metadata_processed.csv}"
RAW_VIDEO_DIR="${RAW_VIDEO_DIR:-$RUNTIME_ROOT/raw_video}"
SCRATCH_RAW_VIDEO_DIR="${SCRATCH_RAW_VIDEO_DIR:-/scratch/$USER/SignVerse-2M-runtime/raw_video}"
HOME_RAW_VIDEO_LIMIT="${HOME_RAW_VIDEO_LIMIT:-180}"
SCRATCH_RAW_VIDEO_LIMIT="${SCRATCH_RAW_VIDEO_LIMIT:-2800}"
RAW_CAPTION_DIR="${RAW_CAPTION_DIR:-$RUNTIME_ROOT/raw_caption}"
RAW_METADATA_DIR="${RAW_METADATA_DIR:-$RUNTIME_ROOT/raw_metadata}"
DATASET_DIR="${DATASET_DIR:-$RUNTIME_ROOT/dataset}"
STATS_NPZ="${STATS_NPZ:-$RUNTIME_ROOT/stats.npz}"
STATUS_JOURNAL_PATH="${STATUS_JOURNAL_PATH:-$RUNTIME_ROOT/upload_status_journal.jsonl}"
PIPELINE01="${PIPELINE01:-$ROOT_DIR/scripts/pipeline01_download_video_fix_caption.py}"
DOWNLOAD_CLAIM_DIR="${DOWNLOAD_CLAIM_DIR:-$STATE_ROOT/slurm/state/download_claims}"
DOWNLOAD_CSV_LOCK_PATH="${DOWNLOAD_CSV_LOCK_PATH:-$STATE_ROOT/SignVerse-2M-metadata_processed.csv.lock}"
MANIFEST="${MANIFEST:-${1:-}}"

if [[ -z "$MANIFEST" ]]; then
  echo "MANIFEST is required (env var or first positional arg)." >&2
  exit 1
fi
if [[ ! -f "$MANIFEST" ]]; then
  echo "Manifest not found: $MANIFEST" >&2
  exit 1
fi
if [[ -z "${SLURM_ARRAY_TASK_ID:-}" ]]; then
  echo "SLURM_ARRAY_TASK_ID is required." >&2
  exit 1
fi
if [[ ! -f "$CONDA_SH" ]]; then
  echo "Missing conda init script: $CONDA_SH" >&2
  exit 1
fi

VIDEO_ID="$(sed -n "$((SLURM_ARRAY_TASK_ID + 1))p" "$MANIFEST")"
if [[ -z "$VIDEO_ID" ]]; then
  echo "No video id found for task index ${SLURM_ARRAY_TASK_ID} in manifest $MANIFEST" >&2
  exit 1
fi

mkdir -p "$DOWNLOAD_CLAIM_DIR"
CLAIM_PATH="$DOWNLOAD_CLAIM_DIR/${VIDEO_ID}.claim"
write_claim() {
  cat > "$CLAIM_PATH" <<CLAIM
job_id=${SLURM_ARRAY_JOB_ID:-${SLURM_JOB_ID:-}}
task_id=${SLURM_ARRAY_TASK_ID}
job_key=${SLURM_ARRAY_JOB_ID:-${SLURM_JOB_ID:-}}_${SLURM_ARRAY_TASK_ID}
video_id=${VIDEO_ID}
host=$(hostname)
pid=$$
claimed_at=$(date '+%F %T')
CLAIM
}
cleanup_claim() {
  rm -f "$CLAIM_PATH"
}
write_claim
trap cleanup_claim EXIT

echo "[$(date '+%F %T')] job=${SLURM_JOB_ID:-na} task=${SLURM_ARRAY_TASK_ID} host=$(hostname) video_id=$VIDEO_ID"

STAGGER_MIN="${DOWNLOAD_START_STAGGER_MIN:-1}"
STAGGER_MAX="${DOWNLOAD_START_STAGGER_MAX:-3}"
if [[ "$STAGGER_MIN" =~ ^[0-9]+$ && "$STAGGER_MAX" =~ ^[0-9]+$ && "$STAGGER_MAX" -ge "$STAGGER_MIN" ]]; then
  delay=$(( STAGGER_MIN + RANDOM % (STAGGER_MAX - STAGGER_MIN + 1) ))
  sleep "$delay"
fi

# shellcheck disable=SC1090
source "$CONDA_SH"
cmd=(python "$PIPELINE01"
  --source-metadata-csv "$SOURCE_METADATA_CSV"
  --output-metadata-csv "$OUTPUT_METADATA_CSV"
  --raw-video-dir "$RAW_VIDEO_DIR"
  --scratch-raw-video-dir "$SCRATCH_RAW_VIDEO_DIR"
  --home-raw-video-limit "$HOME_RAW_VIDEO_LIMIT"
  --scratch-raw-video-limit "$SCRATCH_RAW_VIDEO_LIMIT"
  --raw-caption-dir "$RAW_CAPTION_DIR"
  --raw-metadata-dir "$RAW_METADATA_DIR"
  --dataset-dir "$DATASET_DIR"
  --stats-npz "$STATS_NPZ"
  --status-journal-path "$STATUS_JOURNAL_PATH"
  --csv-lock-path "$DOWNLOAD_CSV_LOCK_PATH"
  --limit 1
  --video-ids="$VIDEO_ID"
)
if [[ "${FORCE_METADATA:-0}" == "1" ]]; then
  cmd+=(--force-metadata)
fi
if [[ "${FORCE_SUBTITLES:-0}" == "1" ]]; then
  cmd+=(--force-subtitles)
fi
if [[ "${FORCE_DOWNLOAD:-0}" == "1" ]]; then
  cmd+=(--force-download)
fi
if [[ "${SKIP_VIDEO_DOWNLOAD:-0}" == "1" ]]; then
  cmd+=(--skip-video-download)
fi
if [[ "${SKIP_SUBTITLES:-0}" == "1" ]]; then
  cmd+=(--skip-subtitles)
fi
if [[ -n "${COOKIES_FROM_BROWSER:-}" ]]; then
  cmd+=(--cookies-from-browser "$COOKIES_FROM_BROWSER")
fi
if [[ -n "${COOKIES_FILE:-}" ]]; then
  cmd+=(--cookies "$COOKIES_FILE")
fi
if [[ -n "${EXTRACTOR_ARGS:-}" ]]; then
  cmd+=(--extractor-args "$EXTRACTOR_ARGS")
fi
CONDA_NO_PLUGINS=true conda run -n "$CONDA_ENV" "${cmd[@]}"