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

usage() {
  cat >&2 <<'EOF'
Usage:
  PROMOTION_POSITIVE_PORTFOLIO_PATH=artifacts/detection-quality-matrix/multi-sample/aoi1024-positive/multi_sample_quality_summary.json \
  OPERATOR_SAMPLE_MANIFEST_PATH=storage/operator-data/operator_samples_manifest.json \
  QUALITY_MODEL_ASSET_IDS="geointel-building-yolov8s-aoi1024bg512r3e50-pt" \
  QUALITY_TILE_SIZES="512" \
  QUALITY_TILE_OVERLAPS="64" \
  QUALITY_THRESHOLDS="0.35 0.15" \
  bash scripts/run_split_background_promotion_workflow.sh [--preflight-only] [base_url]

Optional environment:
  BACKGROUND_SPLIT_OUTPUT_DIR                 Split matrix output directory.
  PROMOTION_OUTPUT_DIR                        Promotion report output directory.
  PROMOTION_POSITIVE_PORTFOLIO_PATH           Positive AOI portfolio or multi-sample summary.
  PROMOTION_MIN_POSITIVE_SAMPLES              Default: 7.
  PROMOTION_MIN_BACKGROUND_SAMPLES            Default: 2.
  PROMOTION_MIN_MEAN_F1                       Default: 0.25.
  PROMOTION_MAX_BACKGROUND_DETECTIONS_PER_SAMPLE  Default: 0.
  PROMOTION_DEFAULT_POSITIVE_TILE_SIZE        Optional fallback for legacy positive portfolios.
  PROMOTION_DEFAULT_POSITIVE_TILE_OVERLAP     Optional fallback for legacy positive portfolios.
  GE_INTEL_BASE_URL                           Default base URL when no argument is supplied.

Runs the split background matrix, then builds a split-aware promotion report.
The pure-empty background summary is the strict default gate. Sparse-context
background evidence is included for operator review only.

The script uses existing runtime/API flows and report tooling only. It does not
fetch providers, fetch weights, mutate model settings or activate a default.
EOF
}

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

BASE_URL="${GE_INTEL_BASE_URL:-http://localhost:1202}"
PREFLIGHT_ONLY=0

while [ "$#" -gt 0 ]; do
  case "$1" in
    -h|--help)
      usage
      exit 0
      ;;
    --preflight-only)
      PREFLIGHT_ONLY=1
      ;;
    *)
      BASE_URL="$1"
      ;;
  esac
  shift
done

if [ -z "${PROMOTION_POSITIVE_PORTFOLIO_PATH:-}" ]; then
  echo "PROMOTION_POSITIVE_PORTFOLIO_PATH is required" >&2
  usage
  exit 1
fi

if [ ! -s "${PROMOTION_POSITIVE_PORTFOLIO_PATH}" ]; then
  echo "Positive portfolio is not readable: ${PROMOTION_POSITIVE_PORTFOLIO_PATH}" >&2
  exit 1
fi

if [ -z "${OPERATOR_SAMPLE_MANIFEST_PATH:-}" ]; then
  echo "OPERATOR_SAMPLE_MANIFEST_PATH is required" >&2
  usage
  exit 1
fi

if [ ! -s "${OPERATOR_SAMPLE_MANIFEST_PATH}" ]; then
  echo "Operator sample manifest is not readable: ${OPERATOR_SAMPLE_MANIFEST_PATH}" >&2
  exit 1
fi

if [ -n "${PYTHON_BIN:-}" ]; then
  PYTHON_BIN="${PYTHON_BIN}"
else
  PYTHON_BIN=""
  for candidate in python3 python.exe python; do
    if command -v "${candidate}" >/dev/null 2>&1 && "${candidate}" -c "import json, sys" >/dev/null 2>&1; then
      PYTHON_BIN="${candidate}"
      break
    fi
  done
fi

if [ -z "${PYTHON_BIN}" ]; then
  echo "A Python interpreter is required for split-background promotion reporting" >&2
  exit 1
fi

if ! command -v curl >/dev/null 2>&1; then
  echo "curl is required for split-background promotion preflight" >&2
  exit 1
fi

"${PYTHON_BIN}" - "${OPERATOR_SAMPLE_MANIFEST_PATH}" <<'PY'
import json
import sys
from pathlib import Path

manifest_path = Path(sys.argv[1])
payload = json.loads(manifest_path.read_text(encoding="utf-8-sig"))
samples = payload.get("samples") or payload.get("items") or []
if not isinstance(samples, list) or not samples:
    raise SystemExit(f"Operator sample manifest has no samples: {manifest_path}")

background_categories = set()
for sample in samples:
    if str(sample.get("sample_role") or "") != "background_candidate":
        continue

    category = str(sample.get("background_category") or "").strip()
    if not category:
        try:
            reference_feature_count = int(sample.get("reference_feature_count") or 0)
        except (TypeError, ValueError):
            reference_feature_count = 0
        category = (
            "pure_empty_negative"
            if reference_feature_count == 0
            else "sparse_building_context"
        )

    background_categories.add(category)
missing = {"pure_empty_negative", "sparse_building_context"} - background_categories
if missing:
    raise SystemExit(
        "Operator sample manifest is missing background categories "
        f"{sorted(missing)}; found {sorted(background_categories)}"
    )
PY

api_response="$(curl -fsS "${BASE_URL%/}/api/v1/projects" 2>/dev/null || true)"
if ! printf '%s' "${api_response}" | grep -q '"data"'; then
  echo "Runtime API proxy is not reachable or did not return the canonical envelope: ${BASE_URL%/}/api/v1/projects" >&2
  exit 1
fi

if [ "${PREFLIGHT_ONLY}" = "1" ]; then
  echo "Split-background promotion preflight passed"
  echo "Base URL: ${BASE_URL}"
  echo "Positive portfolio: ${PROMOTION_POSITIVE_PORTFOLIO_PATH}"
  echo "Operator sample manifest: ${OPERATOR_SAMPLE_MANIFEST_PATH}"
  exit 0
fi

stamp="$(date -u +%Y%m%dT%H%M%SZ)"
BACKGROUND_SPLIT_OUTPUT_DIR="${BACKGROUND_SPLIT_OUTPUT_DIR:-artifacts/detection-hard-negatives/background-split/${stamp}}"
PROMOTION_OUTPUT_DIR="${PROMOTION_OUTPUT_DIR:-artifacts/detection-model-promotion/split-aware/${stamp}}"

echo "== GeoIntel split-background promotion workflow =="
echo "Base URL: ${BASE_URL}"
echo "Positive portfolio: ${PROMOTION_POSITIVE_PORTFOLIO_PATH}"
echo "Background split output: ${BACKGROUND_SPLIT_OUTPUT_DIR}"
echo "Promotion output: ${PROMOTION_OUTPUT_DIR}"

BACKGROUND_SPLIT_OUTPUT_DIR="${BACKGROUND_SPLIT_OUTPUT_DIR}" \
bash scripts/run_background_corpus_split_matrix.sh "${BASE_URL}"

split_summary="${BACKGROUND_SPLIT_OUTPUT_DIR}/background_corpus_split_summary.json"
if [ ! -s "${split_summary}" ]; then
  echo "Split summary was not produced: ${split_summary}" >&2
  exit 1
fi

mkdir -p "${PROMOTION_OUTPUT_DIR}"

promotion_args=(
  scripts/build_detection_model_promotion_report.py
  --positive-portfolio "${PROMOTION_POSITIVE_PORTFOLIO_PATH}"
  --background-split-summary "${split_summary}"
  --output-dir "${PROMOTION_OUTPUT_DIR}"
  --min-positive-samples "${PROMOTION_MIN_POSITIVE_SAMPLES:-7}"
  --min-background-samples "${PROMOTION_MIN_BACKGROUND_SAMPLES:-2}"
  --min-mean-f1 "${PROMOTION_MIN_MEAN_F1:-0.25}"
  --max-background-detections-per-sample "${PROMOTION_MAX_BACKGROUND_DETECTIONS_PER_SAMPLE:-0}"
)

if [ -n "${PROMOTION_DEFAULT_POSITIVE_TILE_SIZE:-}" ]; then
  promotion_args+=(--default-positive-tile-size "${PROMOTION_DEFAULT_POSITIVE_TILE_SIZE}")
fi

if [ -n "${PROMOTION_DEFAULT_POSITIVE_TILE_OVERLAP:-}" ]; then
  promotion_args+=(--default-positive-tile-overlap "${PROMOTION_DEFAULT_POSITIVE_TILE_OVERLAP}")
fi

"${PYTHON_BIN}" "${promotion_args[@]}"

echo "Split summary: ${split_summary}"
echo "Promotion report: ${PROMOTION_OUTPUT_DIR}/detection_model_promotion_report.json"