import React, { useState } from "react";
// swr
import { mutate } from "swr";
// react hook form
import { useForm } from "react-hook-form";
// headless ui
import { Combobox, Dialog, Transition } from "@headlessui/react";
// hooks
import useUser from "lib/hooks/useUser";
// icons
import { MagnifyingGlassIcon } from "@heroicons/react/20/solid";
import { FolderIcon } from "@heroicons/react/24/outline";
// commons
import { classNames } from "constants/common";
// types
import { IIssue, IssueResponse } from "types";
import { Button } from "ui";
import { PROJECT_ISSUES_DETAILS, PROJECT_ISSUES_LIST } from "constants/fetch-keys";
import issuesServices from "lib/services/issues.services";

type Props = {
  isOpen: boolean;
  setIsOpen: React.Dispatch<React.SetStateAction<boolean>>;
  parentId: string;
};

type FormInput = {
  issue_ids: string[];
  cycleId: string;
};

const AddAsSubIssue: React.FC<Props> = ({ isOpen, setIsOpen, parentId }) => {
  const [query, setQuery] = useState("");

  const { activeWorkspace, activeProject, issues } = useUser();

  const filteredIssues: IIssue[] =
    query === ""
      ? issues?.results ?? []
      : issues?.results.filter((issue) => issue.name.toLowerCase().includes(query.toLowerCase())) ??
        [];

  const {
    register,
    formState: { errors, isSubmitting },
    handleSubmit,
    control,
    reset,
    setError,
  } = useForm<FormInput>();

  const handleCommandPaletteClose = () => {
    setIsOpen(false);
    setQuery("");
    reset();
  };

  const addAsSubIssue = (issueId: string) => {
    if (activeWorkspace && activeProject) {
      issuesServices
        .patchIssue(activeWorkspace.slug, activeProject.id, issueId, { parent: parentId })
        .then((res) => {
          mutate<IssueResponse>(
            PROJECT_ISSUES_LIST(activeWorkspace.slug, activeProject.id),
            (prevData) => ({
              ...(prevData as IssueResponse),
              results: (prevData?.results ?? []).map((p) =>
                p.id === issueId ? { ...p, ...res } : p
              ),
            }),
            false
          );
        })
        .catch((e) => {
          console.log(e);
        });
    }
  };

  return (
    <>
      <Transition.Root show={isOpen} as={React.Fragment} afterLeave={() => setQuery("")} appear>
        <Dialog as="div" className="relative z-10" onClose={handleCommandPaletteClose}>
          <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-gray-500 bg-opacity-25 transition-opacity" />
          </Transition.Child>

          <div className="fixed inset-0 z-10 overflow-y-auto p-4 sm:p-6 md:p-20">
            <Transition.Child
              as={React.Fragment}
              enter="ease-out duration-300"
              enterFrom="opacity-0 scale-95"
              enterTo="opacity-100 scale-100"
              leave="ease-in duration-200"
              leaveFrom="opacity-100 scale-100"
              leaveTo="opacity-0 scale-95"
            >
              <Dialog.Panel className="relative mx-auto max-w-2xl transform divide-y divide-gray-500 divide-opacity-10 rounded-xl bg-white bg-opacity-80 shadow-2xl ring-1 ring-black ring-opacity-5 backdrop-blur backdrop-filter transition-all">
                <Combobox
                // onChange={(item: ItemType) => {
                //   const { url, onClick } = item;
                //   if (url) router.push(url);
                //   else if (onClick) onClick();
                //   handleCommandPaletteClose();
                // }}
                >
                  <div className="relative m-1">
                    <MagnifyingGlassIcon
                      className="pointer-events-none absolute top-3.5 left-4 h-5 w-5 text-gray-900 text-opacity-40"
                      aria-hidden="true"
                    />
                    <Combobox.Input
                      className="h-12 w-full border-0 bg-transparent pl-11 pr-4 text-gray-900 placeholder-gray-500 focus:ring-0 sm:text-sm outline-none"
                      placeholder="Search..."
                      onChange={(e) => setQuery(e.target.value)}
                    />
                  </div>

                  <Combobox.Options
                    static
                    className="max-h-80 scroll-py-2 divide-y divide-gray-500 divide-opacity-10 overflow-y-auto"
                  >
                    {filteredIssues.length > 0 && (
                      <>
                        <li className="p-2">
                          {query === "" && (
                            <h2 className="mt-4 mb-2 px-3 text-xs font-semibold text-gray-900">
                              Issues
                            </h2>
                          )}
                          <ul className="text-sm text-gray-700">
                            {filteredIssues.map((issue) => {
                              if (issue.parent === "" || issue.parent === null)
                                return (
                                  <Combobox.Option
                                    key={issue.id}
                                    value={{
                                      name: issue.name,
                                    }}
                                    className={({ active }) =>
                                      classNames(
                                        "flex items-center gap-2 cursor-pointer select-none rounded-md px-3 py-2",
                                        active ? "bg-gray-900 bg-opacity-5 text-gray-900" : ""
                                      )
                                    }
                                    onClick={() => {
                                      addAsSubIssue(issue.id);
                                      setIsOpen(false);
                                    }}
                                  >
                                    <span
                                      className={`h-1.5 w-1.5 block rounded-full`}
                                      style={{
                                        backgroundColor: issue.state_detail.color,
                                      }}
                                    />
                                    {issue.name}
                                  </Combobox.Option>
                                );
                            })}
                          </ul>
                        </li>
                      </>
                    )}
                  </Combobox.Options>

                  {query !== "" && filteredIssues.length === 0 && (
                    <div className="py-14 px-6 text-center sm:px-14">
                      <FolderIcon
                        className="mx-auto h-6 w-6 text-gray-900 text-opacity-40"
                        aria-hidden="true"
                      />
                      <p className="mt-4 text-sm text-gray-900">
                        We couldn{"'"}t find any issue with that term. Please try again.
                      </p>
                    </div>
                  )}
                </Combobox>
              </Dialog.Panel>
            </Transition.Child>
          </div>
        </Dialog>
      </Transition.Root>
    </>
  );
};

export default AddAsSubIssue;