import React, { useState } from "react";
import { observer } from "mobx-react-lite";
import { useRouter } from "next/router";
import { Dialog, Transition } from "@headlessui/react";
// hooks
import { AlertTriangle } from "lucide-react";
import { Button, TOAST_TYPE, setToast } from "@plane/ui";
import { useEventTracker, useLabel } from "hooks/store";
// icons
// ui
// types
import type { IIssueLabel } from "@plane/types";
// constants
import { LABEL_DELETED, LABEL_GROUP_DELETED } from "constants/event-tracker";

type Props = {
  isOpen: boolean;
  onClose: () => void;
  data: IIssueLabel | null;
};

export const DeleteLabelModal: React.FC<Props> = observer((props) => {
  const { isOpen, onClose, data } = props;
  // router
  const router = useRouter();
  const { workspaceSlug, projectId } = router.query;
  // store hooks
  const { deleteLabel, projectLabelsTree } = useLabel();
  const { captureEvent } = useEventTracker();
  // states
  const [isDeleteLoading, setIsDeleteLoading] = useState(false);

  const handleClose = () => {
    onClose();
    setIsDeleteLoading(false);
  };

  const handleDeletion = async () => {
    if (!workspaceSlug || !projectId || !data) return;

    setIsDeleteLoading(true);

    await deleteLabel(workspaceSlug.toString(), projectId.toString(), data.id)
      .then(() => {
        const labelChildCount = projectLabelsTree?.find((label) => label.id === data.id)?.children?.length || 0;
        if (labelChildCount > 0) {
          captureEvent(LABEL_GROUP_DELETED, {
            group_id: data.id,
            children_count: labelChildCount,
            element: "Project settings labels page",
            state: "SUCCESS",
          });
        } else {
          captureEvent(LABEL_DELETED, {
            label_id: data.id,
            element: "Project settings labels page",
            state: "SUCCESS",
          });
        }
        handleClose();
      })
      .catch((err) => {
        setIsDeleteLoading(false);

        const error = err?.error || "Label could not be deleted. Please try again.";
        setToast({
          type: TOAST_TYPE.ERROR,
          title: "Error!",
          message: error,
        });
      });
  };

  return (
    <Transition.Root show={isOpen} as={React.Fragment}>
      <Dialog as="div" className="relative z-20" onClose={handleClose}>
        <Transition.Child
          as={React.Fragment}
          enter="ease-out duration-300"
          enterFrom="opacity-0"
          enterTo="opacity-100"
          leave="ease-in duration-200"
          leaveFrom="opacity-100"
          leaveTo="opacity-0"
        >
          <div className="fixed inset-0 bg-custom-backdrop transition-opacity" />
        </Transition.Child>

        <div className="fixed inset-0 z-20 overflow-y-auto">
          <div className="flex min-h-full items-end justify-center p-4 text-center sm:items-center sm:p-0">
            <Transition.Child
              as={React.Fragment}
              enter="ease-out duration-300"
              enterFrom="opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95"
              enterTo="opacity-100 translate-y-0 sm:scale-100"
              leave="ease-in duration-200"
              leaveFrom="opacity-100 translate-y-0 sm:scale-100"
              leaveTo="opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95"
            >
              <Dialog.Panel className="relative transform overflow-hidden rounded-lg bg-custom-background-100 text-left shadow-custom-shadow-md transition-all sm:my-8 sm:w-[40rem]">
                <div className="px-4 pb-4 pt-5 sm:p-6 sm:pb-4">
                  <div className="sm:flex sm:items-start">
                    <div className="mx-auto flex h-12 w-12 flex-shrink-0 items-center justify-center rounded-full bg-red-100 sm:mx-0 sm:h-10 sm:w-10">
                      <AlertTriangle className="h-6 w-6 text-red-600" aria-hidden="true" />
                    </div>
                    <div className="mt-3 text-center sm:ml-4 sm:mt-0 sm:text-left">
                      <Dialog.Title as="h3" className="text-lg font-medium leading-6 text-custom-text-100">
                        Delete Label
                      </Dialog.Title>
                      <div className="mt-2">
                        <p className="text-sm text-custom-text-200">
                          Are you sure you want to delete label-{" "}
                          <span className="font-medium text-custom-text-100">{data?.name}</span>? The label will be
                          removed from all the issues.
                        </p>
                      </div>
                    </div>
                  </div>
                </div>
                <div className="flex justify-end gap-2 p-4 sm:px-6">
                  <Button variant="neutral-primary" size="sm" onClick={handleClose}>
                    Cancel
                  </Button>
                  <Button variant="danger" size="sm" tabIndex={1} onClick={handleDeletion} loading={isDeleteLoading}>
                    {isDeleteLoading ? "Deleting..." : "Delete"}
                  </Button>
                </div>
              </Dialog.Panel>
            </Transition.Child>
          </div>
        </div>
      </Dialog>
    </Transition.Root>
  );
});