#!/bin/sh
# ffbench - minimal CLI for the CONUS Flash-Flood Benchmark (curl required; jq optional).
# Usage: ffbench {query|download|get|bundle|help} [flags]
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=""; SELECTED=""; 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;; --selected) SELECTED=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="$f and .is_strict_flash_flood==true"
  [ -n "$SELECTED" ] && f="$f and .selected==true"
  [ -n "$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 $(build_filter)) | {testbed_id,ff_episode_id,primary_state_abbrev,begin_date,lp3_return_period_yr,flash_flood_class}" "$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 "$ARG" ] || { echo "get needs TESTBED_ID" >&2; exit 2; }
    get_manifest; mkdir -p "$OUT"
    if have_jq; then urls=$(jq -r "select(.testbed_id==\"$ARG\" and .record_type==\"artifact\").resolve_url" "$CACHE");
    else urls=$(grep "\"testbed_id\":\"$ARG\"" "$CACHE" | grep '"record_type":"artifact"' | grep -o '"resolve_url":"[^"]*"' | cut -d'"' -f4); fi
    echo "$urls" | while read -r u; do [ -n "$u" ] && (cd "$OUT" && curl -L -C - -O "$u"); done;;
  bundle)
    case "$ARG" in selected26) z=testbeds_selected26.zip;; strict152) z=testbeds_strict152.zip;;
      *) echo "bundle: selected26|strict152" >&2; exit 2;; esac
    curl -L -C - -O "$BASE/bundles/$z";;
  help|*)
    sed -n '2,6p' "$0"; echo "commands: query|download|get TESTBED_ID|bundle {selected26|strict152}"
    echo "flags: --level l1|l2|l3 --state XX --start YYYY-MM-DD --end YYYY-MM-DD --strict --selected --rp-min N --kind streamflow|watershed|package_zip|all --out DIR";;
esac