/**
 * [NEEDS-LIVE-GATEWAY] Owner smoke for the IB Gateway TWS-socket transport (kestrel-7o2.5).
 *
 * This is the acceptance the OWNER runs against a RUNNING IB PAPER gateway. It is NOT a unit test
 * and is NEVER exercised by `bun test` (it lives under `src/`, not `*.test.ts`, and only runs when
 * invoked directly with the env gate set), so CI stays green with no gateway.
 *
 * It PLACES NO ORDERS. It only: connects, completes the handshake, prints the REDACTED account id +
 * the server time, shows a live heartbeat, and then waits for the operator to KILL the gateway to
 * demonstrate the fail-closed degraded-on-kill behavior (status flips `degraded`, use throws the
 * typed error). Ctrl-C or a detected degradation exits cleanly.
 *
 * Run (paper only):
 *   KESTREL_IBKR_SMOKE=1 KESTREL_IBKR_MODE=paper KESTREL_IBKR_PORT=4002 \
 *     bun run src/adapters/broker/ibkr/smoke.ts
 */

import { describeIbkrConfig, resolveIbkrConfig } from "./config.ts";
import { loadEnvFallback } from "../../../cli/credentials.ts";
import { IbkrTransport } from "./transport.ts";

async function runSmoke(): Promise<void> {
  const config = resolveIbkrConfig();
  // eslint-disable-next-line no-console
  console.log(`[smoke] resolving transport → ${describeIbkrConfig(config)} (PLACES NO ORDERS)`);

  const transport = new IbkrTransport(config, {
    heartbeatIntervalMs: 3_000,
    heartbeatStalenessMs: 12_000,
    log: (line) => console.log(`[smoke] ${line}`),
  });

  const status = await transport.connect();
  console.log(
    `[smoke] connected: account=${status.account} serverTime=${
      status.serverTime === undefined ? "?" : new Date(status.serverTime).toISOString()
    } heartbeat=${status.lastHeartbeat ?? "?"}`,
  );
  console.log("[smoke] heartbeat is live. Now KILL the IB Gateway to prove degraded-on-kill…");

  await new Promise<void>((resolve) => {
    const timer = setInterval(() => {
      transport.pulse();
      const s = transport.status();
      console.log(
        `[smoke] status connected=${s.connected} degraded=${s.degraded} serverTime=${
          s.serverTime === undefined ? "?" : new Date(s.serverTime).toISOString()
        }`,
      );
      if (s.degraded) {
        console.log(`[smoke] DEGRADED (fail-closed): ${s.reason}`);
        try {
          transport.client(); // must throw the typed IbkrConnectionError
        } catch (e) {
          console.log(`[smoke] use-after-degrade threw as required: ${(e as Error).name}: ${(e as Error).message}`);
        }
        clearInterval(timer);
        resolve();
      }
    }, 3_000);
  });

  transport.disconnect();
  console.log("[smoke] done — transport closed cleanly. No orders were placed.");
}

if (import.meta.main) {
  loadEnvFallback(); // KESTREL_IBKR_* identifiers from the shared secrets home (OSS-ADR-0054)
  if (process.env.KESTREL_IBKR_SMOKE !== "1") {
    console.log(
      "[smoke] skipped: set KESTREL_IBKR_SMOKE=1 (and run a paper IB Gateway) to exercise this. Places no orders.",
    );
  } else {
    runSmoke().catch((e: unknown) => {
      const err = e as Error;
      console.error(`[smoke] FAILED (fail-closed): ${err.name}: ${err.message}`);
      process.exitCode = 1;
    });
  }
}

export { runSmoke };