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

import { HttpError } from "@calcom/lib/http-error";
import { defaultResponder } from "@calcom/lib/server";

import { schemaBookingReadPublic } from "~/lib/validations/booking";
import { schemaQuerySingleOrMultipleUserIds } from "~/lib/validations/shared/queryUserId";

/**
 * @swagger
 * /bookings:
 *   get:
 *     summary: Find all bookings
 *     operationId: listBookings
 *     tags:
 *     - bookings
 *     responses:
 *       200:
 *         description: OK
 *         content:
 *           application/json:
 *             schema:
 *               $ref: "#/components/schemas/ArrayOfBookings"
 *       401:
 *        description: Authorization information is missing or invalid.
 *       404:
 *         description: No bookings were found
 */
async function handler(req: NextApiRequest) {
  const { userId, isAdmin, prisma } = req;
  const args: Prisma.BookingFindManyArgs = {};
  args.include = {
    attendees: true,
    user: true,
  };

  /** Only admins can query other users */
  if (isAdmin && req.query.userId) {
    const query = schemaQuerySingleOrMultipleUserIds.parse(req.query);
    const userIds = Array.isArray(query.userId) ? query.userId : [query.userId || userId];
    const users = await prisma.user.findMany({
      where: { id: { in: userIds } },
      select: { email: true },
    });
    const userEmails = users.map((u) => u.email);
    args.where = {
      OR: [
        { userId: { in: userIds } },
        {
          attendees: {
            some: {
              email: { in: userEmails },
            },
          },
        },
      ],
    };
  } else if (!isAdmin) {
    const user = await prisma.user.findUnique({
      where: { id: userId },
      select: {
        email: true,
      },
    });
    if (!user) {
      throw new HttpError({ message: "User not found", statusCode: 500 });
    }
    args.where = {
      OR: [
        {
          userId,
        },
        {
          attendees: {
            some: {
              email: user.email,
            },
          },
        },
      ],
    };
  }
  const data = await prisma.booking.findMany(args);
  return { bookings: data.map((booking) => schemaBookingReadPublic.parse(booking)) };
}

export default defaultResponder(handler);