import { Job } from "bullmq";

import {

  InsightJobName,

  InsightJobData,

  InsightPeriodPayload,

} from "@app/lib/queue/types";

import { getQueue } from "@app/lib/queue/QueueRegistry";

import { prisma } from "@app/lib/prisma";

import { logger } from "@app/lib/logger";

import { processMoodTrend } from "@app/lib/queue/processors/insights/moodTrend";

import { processEnergySleep } from "@app/lib/queue/processors/insights/energySleep";

import { processTriggerPattern } from "@app/lib/queue/processors/insights/triggerPattern";

import { processDailyEnergy } from "@app/lib/queue/processors/insights/dailyEnergy";

import { processDailySleep } from "@app/lib/queue/processors/insights/dailySleep";

export async function insightProcessor(

  job: Job<InsightJobData["data"]>,

): Promise<void> {

  logger.info({ job: job.name }, "[insights] job started");

  switch (job.name as InsightJobName) {

    case InsightJobName.FanOut:

      return fanOut();

    case InsightJobName.MoodTrend:

      return processMoodTrend(job.data as InsightPeriodPayload);

    case InsightJobName.EnergySleep:

      return processEnergySleep(job.data as InsightPeriodPayload);

    case InsightJobName.TriggerPattern:

      return processTriggerPattern(job.data as InsightPeriodPayload);

    case InsightJobName.DailyEnergy:

      return processDailyEnergy(job.data as InsightPeriodPayload);

    case InsightJobName.DailySleep:

      return processDailySleep(job.data as InsightPeriodPayload);

    default:

      throw new Error(`Unknown insight job: ${job.name}`);

  }

}

async function fanOut(): Promise<void> {

  const users = await prisma.user.findMany({

    where: { active: true },

    select: { id: true },

  });

  const queue = getQueue("insights");

  const periodEnd = new Date();

  const periodStart = new Date();

  periodStart.setDate(periodEnd.getDate() - 7);

  const payload: Omit<InsightPeriodPayload, "userId"> = {

    periodStart: periodStart.toISOString(),

    periodEnd: periodEnd.toISOString(),

  };

  await queue.addBulk(

    users.flatMap((u) => [

      { name: InsightJobName.MoodTrend, data: { userId: u.id, ...payload } },

      { name: InsightJobName.EnergySleep, data: { userId: u.id, ...payload } },

      {

        name: InsightJobName.TriggerPattern,

        data: { userId: u.id, ...payload },

      },

    ]),

  );

}