import type { Prisma } from "@prisma/client";

import EventManager from "@calcom/core/EventManager";
import { sendScheduledEmails } from "@calcom/emails";
import { getCalEventResponses } from "@calcom/features/bookings/lib/getCalEventResponses";
import { handleConfirmation } from "@calcom/features/bookings/lib/handleConfirmation";
import { isPrismaObjOrUndefined, parseRecurringEvent } from "@calcom/lib";
import { HttpError as HttpCode } from "@calcom/lib/http-error";
import { getTranslation } from "@calcom/lib/server/i18n";
import prisma, { bookingMinimalSelect } from "@calcom/prisma";
import { BookingStatus } from "@calcom/prisma/enums";
import { credentialForCalendarServiceSelect } from "@calcom/prisma/selects/credential";
import type { CalendarEvent } from "@calcom/types/Calendar";

import { getTimeFormatStringFromUserTimeFormat } from "../timeFormat";

export async function handlePaymentSuccess(paymentId: number, bookingId: number) {
  const booking = await prisma.booking.findUnique({
    where: {
      id: bookingId,
    },
    select: {
      ...bookingMinimalSelect,
      eventType: true,
      smsReminderNumber: true,
      location: true,
      eventTypeId: true,
      userId: true,
      uid: true,
      paid: true,
      destinationCalendar: true,
      status: true,
      responses: true,
      user: {
        select: {
          id: true,
          username: true,
          credentials: { select: credentialForCalendarServiceSelect },
          timeZone: true,
          timeFormat: true,
          email: true,
          name: true,
          locale: true,
          destinationCalendar: true,
        },
      },
      payment: {
        select: {
          amount: true,
          currency: true,
          paymentOption: true,
        },
      },
    },
  });

  if (!booking) throw new HttpCode({ statusCode: 204, message: "No booking found" });

  type EventTypeRaw = Awaited<ReturnType<typeof getEventType>>;
  let eventTypeRaw: EventTypeRaw | null = null;
  if (booking.eventTypeId) {
    eventTypeRaw = await getEventType(booking.eventTypeId);
  }

  const { user: userWithCredentials } = booking;
  if (!userWithCredentials) throw new HttpCode({ statusCode: 204, message: "No user found" });
  const { credentials, ...user } = userWithCredentials;

  const t = await getTranslation(user.locale ?? "en", "common");
  const attendeesListPromises = booking.attendees.map(async (attendee) => {
    return {
      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 selectedDestinationCalendar = booking.destinationCalendar || user.destinationCalendar;
  const evt: CalendarEvent = {
    type: booking.title,
    title: booking.title,
    description: booking.description || undefined,
    startTime: booking.startTime.toISOString(),
    endTime: booking.endTime.toISOString(),
    customInputs: isPrismaObjOrUndefined(booking.customInputs),
    ...getCalEventResponses({
      booking: booking,
      bookingFields: booking.eventType?.bookingFields || null,
    }),
    organizer: {
      email: user.email,
      name: user.name!,
      timeZone: user.timeZone,
      timeFormat: getTimeFormatStringFromUserTimeFormat(user.timeFormat),
      language: { translate: t, locale: user.locale ?? "en" },
    },
    attendees: attendeesList,
    location: booking.location,
    uid: booking.uid,
    destinationCalendar: selectedDestinationCalendar ? [selectedDestinationCalendar] : [],
    recurringEvent: parseRecurringEvent(eventTypeRaw?.recurringEvent),
    paymentInfo: booking.payment?.[0] && {
      amount: booking.payment[0].amount,
      currency: booking.payment[0].currency,
      paymentOption: booking.payment[0].paymentOption,
    },
  };

  if (booking.location) evt.location = booking.location;

  const bookingData: Prisma.BookingUpdateInput = {
    paid: true,
    status: BookingStatus.ACCEPTED,
  };

  const isConfirmed = booking.status === BookingStatus.ACCEPTED;
  if (isConfirmed) {
    const eventManager = new EventManager(userWithCredentials);
    const scheduleResult = await eventManager.create(evt);
    bookingData.references = { create: scheduleResult.referencesToCreate };
  }

  if (eventTypeRaw?.requiresConfirmation) {
    delete bookingData.status;
  }

  const paymentUpdate = prisma.payment.update({
    where: {
      id: paymentId,
    },
    data: {
      success: true,
    },
  });

  const bookingUpdate = prisma.booking.update({
    where: {
      id: booking.id,
    },
    data: bookingData,
  });

  await prisma.$transaction([paymentUpdate, bookingUpdate]);

  if (!isConfirmed && !eventTypeRaw?.requiresConfirmation) {
    await handleConfirmation({
      user: userWithCredentials,
      evt,
      prisma,
      bookingId: booking.id,
      booking,
      paid: true,
    });
  } else {
    await sendScheduledEmails({ ...evt });
  }

  throw new HttpCode({
    statusCode: 200,
    message: `Booking with id '${booking.id}' was paid and confirmed.`,
  });
}

async function getEventType(id: number) {
  return prisma.eventType.findUnique({
    where: {
      id,
    },
    select: {
      recurringEvent: true,
      requiresConfirmation: true,
    },
  });
}