#!/bin/sh
# ffbench - minimal CLI for the TORRENT CONUS flash-flood benchmark (curl required; jq optional).
# Usage: ffbench {query|download|get|bundle|help} [flags]
#   query     list catalog rows (record_type=record) matching the filters
#   download  fetch artifact files matching the filters; --kind picks one file type
#   get       fetch every file of one testbed:  ffbench get FF_2025_07_TX_ep002__08165500
#   bundle    fetch a curated bundle:  ffbench bundle {primary21|strict175}
# Docs: DOWNLOAD.md / AGENTS.md.  Archive of record: doi.org/10.5281/zenodo.22118051
set -eu
BASE="${FFBENCH_BASE:-https://huggingface.co/datasets/skyan1002/flash-flood-benchmark-data/resolve/main}"
CACHE="${FFBENCH_CACHE:-${TMPDIR:-/tmp}/ffbench_manifest.jsonl}"
have_jq() { command -v jq >/dev/null 2>&1; }
get_manifest() { [ -f "$CACHE" ] || curl -sL "$BASE/manifest.jsonl" -o "$CACHE"; }

LEVEL=l3; STATE=""; START=""; END=""; STRICT=""; DEDUP=""; PRIMARY=""; RPMIN=""
KIND="all"; OUT="./ffbench_out"; CMD="${1:-help}"; [ $# -gt 0 ] && shift || true; ARG=""
while [ $# -gt 0 ]; do case "$1" in
  --level) LEVEL=$2; shift 2;; --state) STATE=$2; shift 2;; --start) START=$2; shift 2;;
  --end) END=$2; shift 2;; --strict) STRICT=1; shift;;
  --dedup|--selected) DEDUP=1; shift;; --primary) PRIMARY=1; shift;;
  --rp-min) RPMIN=$2; shift 2;; --kind) KIND=$2; shift 2;; --out) OUT=$2; shift 2;;
  -*) echo "unknown flag $1" >&2; exit 2;; *) ARG=$1; shift;; esac; done

build_filter() {
  f=".level==\"$(echo "$LEVEL"|tr a-z A-Z)\""
  [ -n "$STATE" ] && f="$f and .primary_state_abbrev==\"$STATE\""
  [ -n "$START" ] && f="$f and .begin_date>=\"$START\""
  [ -n "$END" ] && f="$f and .begin_date<=\"$END\""
  [ -n "$STRICT" ] && f="$f and .is_strict_flash_flood==true"
  [ -n "$DEDUP" ] && f="$f and (.dedup_selected==true or .selected==true)"
  [ -n "$PRIMARY" ] && f="$f and .primary_benchmark==true"
  [ -n "$RPMIN" ] && f="$f and .lp3_return_period_yr>=$RPMIN"
  echo "$f"
}

case "$CMD" in
  query)
    get_manifest; have_jq || { echo "query needs jq" >&2; exit 3; }
    jq -c "select(.record_type==\"record\" and $(build_filter)) | {testbed_id,ff_episode_id,gage_id,primary_state_abbrev,begin_date,lp3_return_period_yr,flash_flood_class,package_class}" "$CACHE";;
  download)
    get_manifest; have_jq || { echo "download needs jq" >&2; exit 3; }
    mkdir -p "$OUT"
    kf='true'; [ "$KIND" != all ] && kf=".artifact_kind==\"$KIND\""
    jq -r "select(.record_type==\"artifact\" and $(build_filter) and $kf).resolve_url" "$CACHE" \
      | while read -r u; do (cd "$OUT" && curl -L -C - -O "$u"); done;;
  get)
    [ -n "$ARG" ] || { echo "get needs TESTBED_ID (e.g. FF_2025_07_TX_ep002__08165500)" >&2; exit 2; }
    get_manifest; mkdir -p "$OUT"
    if have_jq; then urls=$(jq -r "select(.testbed_id==\"$ARG\" and .record_type==\"artifact\").resolve_url" "$CACHE");
    else
      # the JSONL is emitted with a space after each colon; ' ?' tolerates either form
      urls=$(grep -E "\"testbed_id\": ?\"$ARG\"" "$CACHE" | grep -E '"record_type": ?"artifact"' \
             | grep -oE '"resolve_url": ?"[^"]*"' | sed 's/.*"resolve_url": *"//; s/"$//'); fi
    [ -n "$urls" ] || { echo "no artifacts for testbed_id=$ARG" >&2; exit 4; }
    echo "$urls" | while read -r u; do [ -n "$u" ] && (cd "$OUT" && curl -L -C - -O "$u"); done;;
  bundle)
    case "$ARG" in primary21) z=testbeds_primary21.zip;; strict175) z=testbeds_strict175.zip;;
      *) echo "bundle: primary21|strict175" >&2; exit 2;; esac
    curl -L -C - -O "$BASE/bundles/$z";;
  help|*)
    sed -n '2,8p' "$0"
    echo "flags: --level l1|l2|l3 --state XX --start YYYY-MM-DD --end YYYY-MM-DD"
    echo "       --strict --dedup|--selected --primary --rp-min N --out DIR"
    echo "       --kind streamflow|watershed|hwms_inside|summary|mrms_basin_mean|package_zip|bundle|all";;
esac