#!/usr/bin/env bash
# Image boot-smoke: prove the backend IMAGE actually boots and serves its contract
# (a `docker build` succeeding does not prove the container starts). Builds the image
# locally (or uses a provided BACKEND_IMAGE_TAG), runs it + a throwaway TimescaleDB via
# docker-compose.test.yml, waits for /healthz, then asserts /healthz and the version
# endpoint. Always tears the stack down.
#
#   ./scripts/smoke.sh                       # build :local and smoke it
#   BACKEND_IMAGE_TAG=sha-abc123 ./scripts/smoke.sh   # smoke a published image (CI)
set -euo pipefail
cd "$(dirname "$0")/.."

export POSTGRES_PASSWORD="${POSTGRES_PASSWORD:-smoke}"
# The image to smoke, pulled from the registry (no local build). CI passes the just-
# pushed sha (BACKEND_IMAGE_TAG=sha-<12hex>); locally it defaults to a published tag.
export BACKEND_IMAGE_TAG="${BACKEND_IMAGE_TAG:-v0.0.2-split-ci}"
IMG="${REGISTRY_HOST:-git.thermograph.org}/${BACKEND_IMAGE_PATH:-emi/thermograph-backend/app}:${BACKEND_IMAGE_TAG}"
export SMOKE_HOST_PORT="${SMOKE_HOST_PORT:-18137}"
COMPOSE=(docker compose -f docker-compose.test.yml)
PORT_URL="http://127.0.0.1:${SMOKE_HOST_PORT}"

cleanup() { echo "==> tearing down"; "${COMPOSE[@]}" down -v --remove-orphans >/dev/null 2>&1 || true; }
trap cleanup EXIT

echo "==> pulling $IMG"
"${COMPOSE[@]}" pull backend

echo "==> starting backend + db ($IMG)"
"${COMPOSE[@]}" up -d

echo "==> waiting for /healthz (up to 90s)"
for i in $(seq 1 45); do
  if curl -fsS -o /dev/null "$PORT_URL/healthz"; then ok=1; break; fi
  sleep 2
done
[ "${ok:-}" = 1 ] || { echo "!! backend never became healthy"; "${COMPOSE[@]}" logs --tail=40 backend; exit 1; }

echo "==> asserting contract"
curl -fsS "$PORT_URL/healthz" >/dev/null && echo "   /healthz 200 ok"
ver=$(curl -fsS "$PORT_URL/api/version")
echo "   /api/version -> $ver"
echo "$ver" | grep -q '"backend_version"[[:space:]]*:[[:space:]]*"2"' \
  || { echo "!! /api/version did not report backend_version=2"; exit 1; }

echo "==> SMOKE PASSED"