import type { Dispatch, SetStateAction } from "react";
import { useState } from "react";
import { z } from "zod";

import { useLocale } from "@calcom/lib/hooks/useLocale";
import { trpc } from "@calcom/trpc/react";
import {
  Button,
  Dialog,
  DialogContent,
  DialogFooter,
  DialogHeader,
  MultiEmail,
  Icon,
  showToast,
} from "@calcom/ui";

interface IAddGuestsDialog {
  isOpenDialog: boolean;
  setIsOpenDialog: Dispatch<SetStateAction<boolean>>;
  bookingId: number;
}

export const AddGuestsDialog = (props: IAddGuestsDialog) => {
  const { t } = useLocale();
  const ZAddGuestsInputSchema = z.array(z.string().email()).refine((emails) => {
    const uniqueEmails = new Set(emails);
    return uniqueEmails.size === emails.length;
  });
  const { isOpenDialog, setIsOpenDialog, bookingId } = props;
  const utils = trpc.useUtils();
  const [multiEmailValue, setMultiEmailValue] = useState<string[]>([""]);
  const [isInvalidEmail, setIsInvalidEmail] = useState(false);

  const addGuestsMutation = trpc.viewer.bookings.addGuests.useMutation({
    onSuccess: async () => {
      showToast(t("guests_added"), "success");
      setIsOpenDialog(false);
      setMultiEmailValue([""]);
      utils.viewer.bookings.invalidate();
    },
    onError: (err) => {
      const message = `${err.data?.code}: ${t(err.message)}`;
      showToast(message || t("unable_to_add_guests"), "error");
    },
  });

  const handleAdd = () => {
    if (multiEmailValue.length === 0) {
      return;
    }
    const validationResult = ZAddGuestsInputSchema.safeParse(multiEmailValue);
    if (validationResult.success) {
      addGuestsMutation.mutate({ bookingId, guests: multiEmailValue });
    } else {
      setIsInvalidEmail(true);
    }
  };

  return (
    <Dialog open={isOpenDialog} onOpenChange={setIsOpenDialog}>
      <DialogContent enableOverflow>
        <div className="flex flex-row space-x-3">
          <div className="bg-subtle flex h-10 w-10 flex-shrink-0 justify-center rounded-full ">
            <Icon name="user-plus" className="m-auto h-6 w-6" />
          </div>
          <div className="w-full pt-1">
            <DialogHeader title={t("additional_guests")} />
            <MultiEmail
              label={t("add_emails")}
              value={multiEmailValue}
              readOnly={false}
              setValue={setMultiEmailValue}
            />

            {isInvalidEmail && (
              <div className="my-4 flex text-sm text-red-700">
                <div className="flex-shrink-0">
                  <Icon name="triangle-alert" className="h-5 w-5" />
                </div>
                <div className="ml-3">
                  <p className="font-medium">{t("emails_must_be_unique_valid")}</p>
                </div>
              </div>
            )}

            <DialogFooter>
              <Button
                onClick={() => {
                  setMultiEmailValue([""]);
                  setIsInvalidEmail(false);
                  setIsOpenDialog(false);
                }}
                type="button"
                color="secondary">
                {t("cancel")}
              </Button>
              <Button data-testid="add_members" loading={addGuestsMutation.isPending} onClick={handleAdd}>
                {t("add")}
              </Button>
            </DialogFooter>
          </div>
        </div>
      </DialogContent>
    </Dialog>
  );
};