import { Queue, Worker } from "bullmq";
import { Redis } from "ioredis";
import { ScanService, ScanScheduler, WebhookHandler } from "@shieldai/darkwatch";
import { AlertPipeline } from "@shieldai/darkwatch";

const redisUrl = process.env.REDIS_URL || "redis://localhost:6379";
const connection = new Redis(redisUrl);

const scanQueue = new Queue("darkwatch-scans", { connection });
const alertQueue = new Queue("darkwatch-alerts", { connection });
const scheduleQueue = new Queue("darkwatch-scheduler", { connection });

const scanWorker = new Worker(
  "darkwatch-scans",
  async (job) => {
    const { userId, source } = job.data;
    const scanService = new ScanService();
    const resultCount = await scanService.runScan(userId, source);
    return { resultCount, completedAt: new Date().toISOString() };
  },
  { connection, concurrency: 3 }
);

const alertWorker = new Worker(
  "darkwatch-alerts",
  async () => {
    const pipeline = new AlertPipeline();
    const sent = await pipeline.sendPendingAlerts();
    return { sent, processedAt: new Date().toISOString() };
  },
  { connection, concurrency: 1 }
);

const scheduleWorker = new Worker(
  "darkwatch-scheduler",
  async () => {
    const scheduler = new ScanScheduler();
    const dueSchedules = await scheduler.getDueSchedules();
    const results: Array<{ userId: string; queued: boolean }> = [];

    for (const schedule of dueSchedules) {
      try {
        await scanQueue.add("scheduled-scan", {
          userId: schedule.userId,
          source: undefined,
        }, {
          attempts: 3,
          backoff: { type: "exponential", delay: 5000 },
          jobId: `scheduled-scan-${schedule.userId}-${Date.now()}`,
        });

        await scheduler.markScanned(schedule.userId);
        results.push({ userId: schedule.userId, queued: true });
      } catch (err) {
        console.error(`[Scheduler] Failed to queue scan for ${schedule.userId}:`, err);
        results.push({ userId: schedule.userId, queued: false });
      }
    }

    return { processed: results.length, completedAt: new Date().toISOString() };
  },
  { connection, concurrency: 1 }
);

const webhookWorker = new Worker(
  "darkwatch-webhooks",
  async () => {
    const handler = new WebhookHandler();
    const processed = await handler.processPendingEvents();
    return { processed, completedAt: new Date().toISOString() };
  },
  { connection, concurrency: 1 }
);

scanWorker.on("completed", (job) => {
  console.log(`[Scan] Job ${job?.id} completed: ${JSON.stringify(job?.returnvalue)}`);
});

scanWorker.on("failed", (job, err) => {
  console.error(`[Scan] Job ${job?.id} failed: ${err.message}`);
});

alertWorker.on("completed", (job) => {
  console.log(`[Alert] Job ${job?.id} completed: ${JSON.stringify(job?.returnvalue)}`);
});

alertWorker.on("failed", (job, err) => {
  console.error(`[Alert] Job ${job?.id} failed: ${err.message}`);
});

scheduleWorker.on("completed", (job) => {
  console.log(`[Scheduler] Job ${job?.id} completed: ${JSON.stringify(job?.returnvalue)}`);
});

scheduleWorker.on("failed", (job, err) => {
  console.error(`[Scheduler] Job ${job?.id} failed: ${err.message}`);
});

webhookWorker.on("completed", (job) => {
  console.log(`[Webhook] Job ${job?.id} completed: ${JSON.stringify(job?.returnvalue)}`);
});

webhookWorker.on("failed", (job, err) => {
  console.error(`[Webhook] Job ${job?.id} failed: ${err.message}`);
});

export async function addScanJob(userId: string, source?: string) {
  return scanQueue.add("scan", { userId, source }, {
    attempts: 3,
    backoff: { type: "exponential", delay: 5000 },
    jobId: `scan-${userId}-${Date.now()}`,
  });
}

export async function scheduleAlertProcessing() {
  return alertQueue.add("process-alerts", {}, {
    repeat: { pattern: "*/5 * * * *" },
    jobId: "alert-processor-recurring",
  });
}

export async function schedulePeriodicScanCheck() {
  return scheduleQueue.add("check-due-scans", {}, {
    repeat: { pattern: "*/10 * * * *" },
    jobId: "scheduler-recurring",
  });
}

export async function scheduleWebhookProcessor() {
  const webhookQueue = new Queue("darkwatch-webhooks", { connection });
  return webhookQueue.add("process-pending-webhooks", {}, {
    repeat: { pattern: "*/2 * * * *" },
    jobId: "webhook-processor-recurring",
  });
}

// Waitlist email worker
import { EmailService } from '@shieldai/shared-notifications';

const waitlistEmailWorker = new Worker(
  "waitlist-emails",
  async (job) => {
    const { email, name, entryId } = job.data;
    const templateIdMap: Record<string, string> = {
      'send-waitlist-intro': 'waitlist_intro',
      'send-waitlist-features': 'waitlist_features',
      'send-waitlist-launch-teaser': 'waitlist_launch_teaser',
    };

    const templateId = templateIdMap[job.name];
    if (!templateId) {
      throw new Error(`Unknown waitlist email job: ${job.name}`);
    }

    const emailService = EmailService.getInstance();
    const result = await emailService.sendWithTemplate(email, {
      templateId,
      variables: { name, entryId },
    });

    if (result.status === 'failed') {
      throw new Error(`Failed to send ${templateId} to ${email}: ${result.error}`);
    }

    return { templateId, email, deliveredAt: result.deliveredAt };
  },
  { connection, concurrency: 5 }
);

waitlistEmailWorker.on("completed", (job) => {
  console.log(`[WaitlistEmail] Job ${job?.id} (${job?.name}) completed for ${job?.data?.email}`);
});

waitlistEmailWorker.on("failed", (job, err) => {
  console.error(`[WaitlistEmail] Job ${job?.id} (${job?.name}) failed: ${err.message}`);
});

console.log("Job workers started");

// Report generation workers
import {
  reportGenerationWorker,
  reportSchedulerWorker,
  scheduleReportProcessor,
  scheduleMonthlyReportTrigger,
  scheduleAnnualReportTrigger,
} from './report.jobs';

scheduleReportProcessor().catch(console.error);
scheduleMonthlyReportTrigger().catch(console.error);
scheduleAnnualReportTrigger().catch(console.error);