import type { WebhookTriggerEvents } from "@prisma/client";
import type { NextApiRequest, NextApiResponse } from "next";
import { z } from "zod";

import { DailyLocationType } from "@calcom/app-store/locations";
import { getDownloadLinkOfCalVideoByRecordingId } from "@calcom/core/videoClient";
import { sendDailyVideoRecordingEmails } from "@calcom/emails";
import { getServerSession } from "@calcom/features/auth/lib/getServerSession";
import getWebhooks from "@calcom/features/webhooks/lib/getWebhooks";
import sendPayload from "@calcom/features/webhooks/lib/sendPayload";
import { IS_SELF_HOSTED } from "@calcom/lib/constants";
import { defaultHandler } from "@calcom/lib/server";
import { getTranslation } from "@calcom/lib/server/i18n";
import prisma, { bookingMinimalSelect } from "@calcom/prisma";
import type { CalendarEvent } from "@calcom/types/Calendar";

const schema = z.object({
  recordingId: z.string(),
  bookingUID: z.string(),
});

const downloadLinkSchema = z.object({
  download_link: z.string(),
});

const triggerWebhook = async ({
  evt,
  downloadLink,
  booking,
}: {
  evt: CalendarEvent;
  downloadLink: string;
  booking: {
    userId: number | undefined;
    eventTypeId: number | null;
  };
}) => {
  const eventTrigger: WebhookTriggerEvents = "RECORDING_READY";
  // Send Webhook call if hooked to BOOKING.RECORDING_READY
  const subscriberOptions = {
    userId: booking.userId ?? 0,
    eventTypeId: booking.eventTypeId ?? 0,
    triggerEvent: eventTrigger,
  };
  const webhooks = await getWebhooks(subscriberOptions);

  const promises = webhooks.map((webhook) =>
    sendPayload(webhook.secret, eventTrigger, new Date().toISOString(), webhook, {
      ...evt,
      downloadLink,
    }).catch((e) => {
      console.error(`Error executing webhook for event: ${eventTrigger}, URL: ${webhook.subscriberUrl}`, e);
    })
  );
  await Promise.all(promises);
};

async function handler(req: NextApiRequest, res: NextApiResponse) {
  if (!process.env.SENDGRID_API_KEY || !process.env.SENDGRID_EMAIL) {
    return res.status(405).json({ message: "No SendGrid API key or email" });
  }
  const response = schema.safeParse(JSON.parse(req.body));

  if (!response.success) {
    return res.status(400).send({
      message: "Invalid Payload",
    });
  }

  const { recordingId, bookingUID } = response.data;
  const session = await getServerSession({ req, res });

  if (!session?.user) {
    return res.status(401).send({
      message: "User not logged in",
    });
  }

  try {
    const booking = await prisma.booking.findFirst({
      where: {
        uid: bookingUID,
      },
      select: {
        ...bookingMinimalSelect,
        uid: true,
        location: true,
        isRecorded: true,
        eventTypeId: true,
        user: {
          select: {
            id: true,
            timeZone: true,
            email: true,
            name: true,
            locale: true,
            destinationCalendar: true,
          },
        },
      },
    });

    if (!booking || booking.location !== DailyLocationType) {
      return res.status(404).send({
        message: `Booking of uid ${bookingUID} does not exist or does not contain daily video as location`,
      });
    }

    const t = await getTranslation(booking?.user?.locale ?? "en", "common");
    const attendeesListPromises = booking.attendees.map(async (attendee) => {
      return {
        id: attendee.id,
        name: attendee.name,
        email: attendee.email,
        timeZone: attendee.timeZone,
        language: {
          translate: await getTranslation(attendee.locale ?? "en", "common"),
          locale: attendee.locale ?? "en",
        },
      };
    });

    const attendeesList = await Promise.all(attendeesListPromises);

    const isUserAttendeeOrOrganiser =
      booking?.user?.id === session.user.id ||
      attendeesList.find((attendee) => attendee.id === session.user.id);

    if (!isUserAttendeeOrOrganiser) {
      return res.status(403).send({
        message: "Unauthorised",
      });
    }

    await prisma.booking.update({
      where: {
        uid: booking.uid,
      },
      data: {
        isRecorded: true,
      },
    });

    const response = await getDownloadLinkOfCalVideoByRecordingId(recordingId);
    const downloadLinkResponse = downloadLinkSchema.parse(response);
    const downloadLink = downloadLinkResponse.download_link;

    const evt: CalendarEvent = {
      type: booking.title,
      title: booking.title,
      description: booking.description || undefined,
      startTime: booking.startTime.toISOString(),
      endTime: booking.endTime.toISOString(),
      organizer: {
        email: booking.user?.email || "Email-less",
        name: booking.user?.name || "Nameless",
        timeZone: booking.user?.timeZone || "Europe/London",
        language: { translate: t, locale: booking?.user?.locale ?? "en" },
      },
      attendees: attendeesList,
      uid: booking.uid,
    };

    await triggerWebhook({
      evt,
      downloadLink,
      booking: { userId: booking?.user?.id, eventTypeId: booking.eventTypeId },
    });

    const isSendingEmailsAllowed = IS_SELF_HOSTED || session?.user?.belongsToActiveTeam;

    // send emails to all attendees only when user has team plan
    if (isSendingEmailsAllowed) {
      await sendDailyVideoRecordingEmails(evt, downloadLink);
      return res.status(200).json({ message: "Success" });
    }

    return res.status(403).json({ message: "User does not have team plan to send out emails" });
  } catch (err) {
    console.warn("something_went_wrong", err);
    return res.status(500).json({ message: "something went wrong" });
  }
}

export default defaultHandler({
  POST: Promise.resolve({ default: handler }),
});