import { loadDevEnv } from "@/lib/dev-env";

loadDevEnv();
import { assertRpaWorkerEnv } from "@/lib/rpa/env";
import { ensureNativeInfraIfNeeded } from "@/lib/infra/ensure-native-infra";
import {
  ensureRedisReady,
  getRedisConnectionOptions,
  resetRedisClient,
} from "@/lib/redis";
import { Worker } from "bullmq";
import os from "node:os";
import {
  RPA_QUEUE_NAME,
  RPA_WORKER_CONCURRENCY,
} from "@/lib/constants/rpa";
import { isCircuitOpen } from "@/modules/cache/circuit-breaker";
import type { AddressCandidatesJobData } from "@/modules/address/candidates-queue-types";
import type { ParkedSessionJobData } from "@/modules/address/parked-session-queue-types";
import { processAddressCandidatesJob } from "@/workers/rpa/candidates-job-handler";
import { processQuoteJob } from "@/workers/rpa/job-handler";
import type { Priority1QuoteJobData } from "@/modules/priority1/rpa-queue";
import { processFlockQuoteJob } from "@/workers/rpa/flock-job-handler";
import { processPriority1QuoteJob } from "@/workers/rpa/priority1-job-handler";
import type { FlockQuoteJobData } from "@/modules/flock/rpa-queue";
import {
  processParkedSessionPreheatJob,
  processReleaseParkedSessionJob,
} from "@/workers/rpa/parked-session-job-handler";
import { processSessionConfirmJob } from "@/workers/rpa/session-confirm-job-handler";
import type { SessionConfirmJobData } from "@/modules/address/session-confirm-queue-types";
import type { QuoteJobData } from "@/modules/quote/rpa-queue";
import { closeBrowser } from "@/workers/rpa/session-manager";
import { closeFlockWorkerSession } from "@/workers/rpa/flock/worker-session";
import { sweepExpiredParkedSessions } from "@/workers/rpa/parked-quote-session";
import { isParkedSessionEnabled } from "@/lib/rpa/env";
import { getRpaAddressMode } from "@/lib/rpa/address-mode";
import {
  getRpaWorkerLockDurationMs,
} from "@/workers/rpa/queue";
import { recoverOrphanActiveJobs } from "@/workers/rpa/queue-recovery";
import {
  heartbeat,
  isWorkerPaused,
} from "@/workers/rpa/worker-state";

const WORKER_ID =
  process.env.RPA_WORKER_ID?.trim() || `${os.hostname()}-${process.pid}`;
process.env.RPA_WORKER_ID = WORKER_ID;

const HEARTBEAT_INTERVAL_MS = 10_000;
const CIRCUIT_CHECK_INTERVAL_MS = 5_000;
const NATIVE_INFRA_SETTLE_MS = 3_000;
const PARKED_SWEEP_INTERVAL_MS = 60_000;

async function recoverRedisConnection(reason: string): Promise<void> {
  console.warn(`[rpa-worker] Redis 恢复中（${reason}）…`);
  try {
    ensureNativeInfraIfNeeded();
  } catch (error) {
    console.error("[rpa-worker] WSL 基础设施恢复失败:", error);
  }
  resetRedisClient();
  await ensureRedisReady(15, 2_000);
}

async function safeHeartbeat(workerId: string): Promise<void> {
  try {
    await heartbeat(workerId);
  } catch (error) {
    await recoverRedisConnection(
      error instanceof Error ? error.message : "heartbeat",
    );
    await heartbeat(workerId);
  }
}

async function bootstrap(): Promise<void> {
  assertRpaWorkerEnv();
  ensureNativeInfraIfNeeded();
  if (
    process.platform === "win32" &&
    process.env.DEV_INFRA_MODE?.trim().toLowerCase() === "native"
  ) {
    await new Promise((resolve) => setTimeout(resolve, NATIVE_INFRA_SETTLE_MS));
  }
  await ensureRedisReady();
  const recovered = await recoverOrphanActiveJobs();
  if (recovered > 0) {
    console.warn(`[rpa-worker] 已回收 ${recovered} 条 orphan active 队列 job`);
  }
  console.log(`[rpa-worker] 启动 worker_id=${WORKER_ID}`);
  console.log(`[rpa-worker] RPA_ADDRESS_MODE=${getRpaAddressMode()}`);
  console.log(
    `[rpa-worker] 驻留页加速=${isParkedSessionEnabled() ? "已启用(RPA_PARKED_SESSION=true)" : "已关闭(默认)"}`,
  );
  if (process.env.RPA_MOCK_MODE !== "true") {
    const { isFlockRpaEnabled, isFlockWorkerReuseSession, getFlockQuotesPerEmail, getFlockQuoteMode, hasFlockLoginCredentials } =
      await import("@/lib/flock/env");
    if (isFlockRpaEnabled()) {
      console.log(
        `[rpa-worker] Flock quoteMode=${getFlockQuoteMode()} ` +
          `hasLogin=${hasFlockLoginCredentials()} ` +
          `emailMode=${process.env.FLOCK_EMAIL_MODE ?? "alias"} ` +
          `reuseSession=${isFlockWorkerReuseSession()} ` +
          `quotesPerEmail=${getFlockQuotesPerEmail()}`,
      );
    }
  }

  if (process.env.RPA_MOCK_MODE !== "true") {
    try {
      const { ensureMothershipStorageState } = await import(
        "@/lib/rpa/ensure-storage-state"
      );
      await ensureMothershipStorageState();
    } catch (error) {
      const brief = error instanceof Error ? error.message : String(error);
      console.warn(
        `[rpa-worker] 启动时自动获取 MotherShip 会话失败，首单将重试: ${brief.slice(0, 160)}`,
      );
    }
  }

  const worker = new Worker(
    RPA_QUEUE_NAME,
    async (job) => {
      if (job.name === "address-candidates") {
        console.log(
          `[rpa-worker] 消费 address-candidates job_id=${(job.data as AddressCandidatesJobData).jobId}`,
        );
        await processAddressCandidatesJob(
          job.data as AddressCandidatesJobData,
        );
        return;
      }

      if (job.name === "parked-session-preheat") {
        await processParkedSessionPreheatJob(job.data as ParkedSessionJobData);
        return;
      }

      if (job.name === "release-parked-session") {
        await processReleaseParkedSessionJob(job.data as ParkedSessionJobData);
        return;
      }

      if (job.name === "session-confirm-addresses") {
        await processSessionConfirmJob(job.data as SessionConfirmJobData);
        return;
      }

      if (job.name === "priority1-quote") {
        const p1Data = job.data as Priority1QuoteJobData;
        const maxAttempts = job.opts.attempts ?? 1;
        const isFinalAttempt = job.attemptsMade + 1 >= maxAttempts;
        console.log(
          `[rpa-worker] 消费 priority1-quote quote_id=${p1Data.quoteId} attempt=${job.attemptsMade + 1}/${maxAttempts}`,
        );
        await processPriority1QuoteJob(p1Data, WORKER_ID, { isFinalAttempt });
        return;
      }

      if (job.name === "flock-quote") {
        const flockData = job.data as FlockQuoteJobData;
        const maxAttempts = job.opts.attempts ?? 1;
        const isFinalAttempt = job.attemptsMade + 1 >= maxAttempts;
        console.log(
          `[rpa-worker] 消费 flock-quote quote_id=${flockData.quoteId} attempt=${job.attemptsMade + 1}/${maxAttempts}`,
        );
        await processFlockQuoteJob(flockData, WORKER_ID, { isFinalAttempt });
        return;
      }

      const quoteData = job.data as QuoteJobData;
      const maxAttempts = job.opts.attempts ?? 1;
      const isFinalAttempt = job.attemptsMade + 1 >= maxAttempts;
      console.log(
        `[rpa-worker] 消费 job quote_id=${quoteData.quoteId} attempt=${job.attemptsMade + 1}/${maxAttempts}`,
      );
      await processQuoteJob(quoteData, WORKER_ID, { isFinalAttempt });
    },
    {
      connection: getRedisConnectionOptions(),
      concurrency: RPA_WORKER_CONCURRENCY,
      lockDuration: getRpaWorkerLockDurationMs(),
      stalledInterval: 30_000,
      maxStalledCount: 2,
    },
  );

  worker.on("failed", (job, error) => {
    const label =
      job?.name === "address-candidates"
        ? `job_id=${(job.data as AddressCandidatesJobData).jobId}`
        : `quote_id=${(job?.data as QuoteJobData | undefined)?.quoteId}`;
    console.error(`[rpa-worker] job 失败 ${label}:`, error.message);
  });

  worker.on("error", (error) => {
    console.error("[rpa-worker] BullMQ 连接错误:", error.message);
  });

  worker.on("completed", (job) => {
    if (job.name === "address-candidates") {
      console.log(
        `[rpa-worker] address-candidates 完成 job_id=${(job.data as AddressCandidatesJobData).jobId}`,
      );
      return;
    }
    console.log(
      `[rpa-worker] job 完成 quote_id=${(job.data as QuoteJobData).quoteId}`,
    );
  });

  await safeHeartbeat(WORKER_ID);
  console.log("[rpa-worker] Redis 心跳就绪");

  const heartbeatTimer = setInterval(() => {
    safeHeartbeat(WORKER_ID).catch((error) => {
      console.error("[rpa-worker] 心跳失败:", error);
    });
  }, HEARTBEAT_INTERVAL_MS);

  const circuitTimer = setInterval(async () => {
    try {
      const paused = await isWorkerPaused(WORKER_ID);
      const circuitOpen = await isCircuitOpen();
      if (circuitOpen || paused) {
        if (!worker.isPaused()) {
          await worker.pause(true);
          console.warn(
            `[rpa-worker] 暂停消费 circuit=${circuitOpen} paused=${paused}`,
          );
        }
      } else if (worker.isPaused()) {
        worker.resume();
        console.log("[rpa-worker] 恢复消费");
      }
    } catch (error) {
      console.error("[rpa-worker] 熔断/暂停检查失败:", error);
      await recoverRedisConnection("circuit-check").catch(() => undefined);
    }
  }, CIRCUIT_CHECK_INTERVAL_MS);

  const parkedSweepTimer = setInterval(() => {
    const removed = sweepExpiredParkedSessions();
    if (removed > 0) {
      console.log(`[rpa-worker] 清理过期驻留会话 ${removed} 条`);
    }
  }, PARKED_SWEEP_INTERVAL_MS);

  const shutdown = async () => {
    console.log("[rpa-worker] 正在关闭…");
    clearInterval(heartbeatTimer);
    clearInterval(circuitTimer);
    clearInterval(parkedSweepTimer);
    await worker.close();
    await closeFlockWorkerSession();
    await closeBrowser();
    process.exit(0);
  };

  process.on("SIGINT", shutdown);
  process.on("SIGTERM", shutdown);
}

bootstrap().catch((error) => {
  console.error("[rpa-worker] 启动失败:", error);
  process.exit(1);
});