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

NETWORK="${OBSERVABILITY_NETWORK:-han-chat-observability}"
COLLECTOR_SERVICE="${COLLECTOR_SERVICE:-otel-collector}"
errors=0

ok() { printf 'OK   %s\n' "$*"; }
fail() { printf 'FAIL %s\n' "$*" >&2; errors=$((errors + 1)); }

collector_id="$(docker compose ps -q "$COLLECTOR_SERVICE" 2>/dev/null || true)"
if [[ -n "$collector_id" ]] &&
  [[ "$(docker inspect --format '{{.State.Status}}' "$collector_id")" == running ]]; then
  ok "Collector service is running"
else
  fail "Collector service '$COLLECTOR_SERVICE' is not running"
fi

for service in sms-service sms-worker; do
  if docker compose exec -T "$service" python - <<'PY' >/dev/null 2>&1
import os
import urllib.request
port = os.environ.get("SMS_METRICS_PORT", "9464") if "worker" in os.environ.get("OTEL_SERVICE_NAME", "") else "8080"
urllib.request.urlopen(f"http://127.0.0.1:{port}/metrics", timeout=3).read(1024)
PY
  then
    ok "${service} metrics endpoint"
  else
    fail "${service} metrics endpoint"
  fi
done

docker run --rm --network "$NETWORK" \
  ghcr.io/open-telemetry/opentelemetry-collector-contrib/telemetrygen:latest \
  traces --otlp-endpoint otel-collector:4317 --otlp-insecure \
  --service han-chat-e2e-canary --traces 100 --rate 20 >/dev/null \
  && ok "100 canary traces submitted" \
  || fail "telemetrygen failed"

bad_logs="$(
  docker compose logs --since=10m "$COLLECTOR_SERVICE" 2>&1 |
    grep -Ei 'queue is full|connection refused|tls:|Unauthenticated|Permanent error' || true
)"
if [[ -z "$bad_logs" ]]; then
  ok "No exporter/queue errors in last 10 minutes"
else
  fail "Collector reports exporter/queue errors"
  printf '%s\n' "$bad_logs" >&2
fi

if ((errors)); then
  printf 'Observability verification failed: %d check(s)\n' "$errors" >&2
  exit 1
fi

cat <<'EOF'
Локальный канал исправен. В SigNoz проверьте за последние 15 минут:
  service.name = han-chat-e2e-canary
  service.namespace = han-chat
Затем выполните synthetic API request и проверьте общий trace между
api-backend и dependency spans, service.version и deployment.environment.
EOF