import type { NextApiRequest, NextApiResponse } from "next";
import prisma from "@lib/prisma";
import { getBusyCalendarTimes } from "@lib/calendarClient";
// import { getBusyVideoTimes } from "@lib/videoClient";
import dayjs from "dayjs";
import { asStringOrNull } from "@lib/asStringOrNull";
import { User } from "@prisma/client";

export default async function handler(req: NextApiRequest, res: NextApiResponse) {
  const user = asStringOrNull(req.query.user);
  const dateFrom = dayjs(asStringOrNull(req.query.dateFrom));
  const dateTo = dayjs(asStringOrNull(req.query.dateTo));

  if (!dateFrom.isValid() || !dateTo.isValid()) {
    return res.status(400).json({ message: "Invalid time range given." });
  }

  const currentUser: User = await prisma.user.findUnique({
    where: {
      username: user,
    },
    select: {
      credentials: true,
      timeZone: true,
      bufferTime: true,
      availability: true,
      id: true,
      startTime: true,
      endTime: true,
    },
  });

  const selectedCalendars = await prisma.selectedCalendar.findMany({
    where: {
      userId: currentUser.id,
    },
  });

  const busyTimes = await getBusyCalendarTimes(
    currentUser.credentials,
    dateFrom.format(),
    dateTo.format(),
    selectedCalendars
  );

  // busyTimes.push(...await getBusyVideoTimes(currentUser.credentials, dateFrom.format(), dateTo.format()));

  const bufferedBusyTimes = busyTimes.map((a) => ({
    start: dayjs(a.start).subtract(currentUser.bufferTime, "minute").toString(),
    end: dayjs(a.end).add(currentUser.bufferTime, "minute").toString(),
  }));

  res.status(200).json({
    busy: bufferedBusyTimes,
    workingHours: {
      daysOfWeek: [0, 1, 2, 3, 4, 5, 6],
      timeZone: currentUser.timeZone,
      startTime: currentUser.startTime,
      endTime: currentUser.endTime,
    },
  });
}