#!/bin/sh
set -eu

cd "$(dirname "$0")/.."

marker="smoke-$(date +%s)-$$"
headers=""
smoke_project=${SMOKE_PROJECT:-"thothii-smoke-$(date +%s)-$$"}
keep_resources=${KEEP_SMOKE_RESOURCES:-0}

case "$smoke_project" in
  thothii)
    echo "SMOKE_PROJECT=thothii is reserved for the operator stack" >&2
    exit 2
    ;;
  ""|*[!a-z0-9_-]*|[!a-z0-9]*)
    echo "invalid SMOKE_PROJECT: use lowercase letters, digits, hyphens, or underscores" >&2
    exit 2
    ;;
esac

compose() {
  docker compose --project-name "$smoke_project" --profile external "$@"
}
# Avoid colliding with a developer's existing service. Production/developer Compose still
# defaults to 8080; a published port of 0 asks Docker for a free ephemeral smoke port.
export THOTH_HTTP_PORT=${THOTH_HTTP_PORT:-0}

cleanup() {
  if [ -n "$headers" ]; then rm -f "$headers"; fi
  if [ "$keep_resources" = "1" ]; then
    echo "Keeping smoke resources for project $smoke_project (KEEP_SMOKE_RESOURCES=1)." >&2
  else
    # The unique project namespace makes this safe: remove the smoke volume while leaving
    # the fixed `thothii` operator project and every operator-owned volume untouched.
    compose down --volumes >/dev/null 2>&1 || true
  fi
}
trap cleanup EXIT HUP INT TERM

compose config --quiet
compose up --build --wait core frontend
published=$(compose port frontend 8080)
http_port=${published##*:}

curl --fail --silent --show-error "http://127.0.0.1:$http_port/health" >/dev/null

# The nginx proxy must preserve streaming semantics for the backend SSE endpoint.
headers=$(mktemp)
curl --fail --silent --show-error --max-time 2 --dump-header "$headers" \
  "http://127.0.0.1:$http_port/api/sessions/docker-smoke/events" \
  >/dev/null 2>&1 || status=$?
status=${status:-0}
if [ "$status" -ne 0 ] && [ "$status" -ne 28 ]; then
  echo "SSE probe failed with curl status $status" >&2
  exit "$status"
fi
grep -qi '^content-type: text/event-stream' "$headers"
grep -qi '^cache-control: no-cache' "$headers"
rm -f "$headers"
headers=""

# Write through the named volume, restart the application, and prove persistence.
compose exec -T core sh -c 'printf "%s\n" "$1" > /data/.compose-smoke-marker' sh "$marker"
compose restart core
compose up --wait core frontend
persisted=$(compose exec -T core sh -c 'cat /data/.compose-smoke-marker')
[ "$persisted" = "$marker" ]
compose exec -T core rm -f /data/.compose-smoke-marker

curl --fail --silent --show-error "http://127.0.0.1:$http_port/health" >/dev/null
echo "Compose health, SSE proxy, and restart persistence checks passed."