plane/web/components/project/label-select.tsx

import React, { useState } from "react";
import { usePopper } from "react-popper";
import { Placement } from "@popperjs/core";
import { Combobox } from "@headlessui/react";
import { Check, ChevronDown, PlusIcon, Search } from "lucide-react";

// components
import { CreateLabelModal } from "components/labels";
// ui
import { Tooltip } from "components/ui";
// types
import { IIssueLabels } from "types";

type Props = {
  value: string[];
  onChange: (data: string[]) => void;
  labels: IIssueLabels[];
  className?: string;
  buttonClassName?: string;
  optionsClassName?: string;
  maxRender?: number;
  placement?: Placement;
  hideDropdownArrow?: boolean;
  disabled?: boolean;
};

export const LabelSelect: React.FC<Props> = ({
  value,
  onChange,
  labels,
  className = "",
  buttonClassName = "",
  optionsClassName = "",
  maxRender = 2,
  placement,
  hideDropdownArrow = false,
  disabled = false,
}) => {
  const [query, setQuery] = useState("");

  const [referenceElement, setReferenceElement] = useState<HTMLButtonElement | null>(null);
  const [popperElement, setPopperElement] = useState<HTMLDivElement | null>(null);

  const [labelModal, setLabelModal] = useState(false);

  const { styles, attributes } = usePopper(referenceElement, popperElement, {
    placement: placement ?? "bottom-start",
  });

  const options = labels?.map((label) => ({
    value: label.id,
    query: label.name,
    content: (
      <div className="flex items-center justify-start gap-2">
        <span
          className="h-2.5 w-2.5 flex-shrink-0 rounded-full"
          style={{
            backgroundColor: label.color,
          }}
        />
        <span>{label.name}</span>
      </div>
    ),
  }));

  const filteredOptions =
    query === "" ? options : options?.filter((option) => option.query.toLowerCase().includes(query.toLowerCase()));

  const footerOption = (
    <button
      type="button"
      className="flex w-full select-none items-center rounded py-2 px-1 hover:bg-custom-background-80"
      onClick={() => setLabelModal(true)}
    >
      <span className="flex items-center justify-start gap-1 text-custom-text-200">
        <PlusIcon className="h-4 w-4" aria-hidden="true" />
        <span>Create New Label</span>
      </span>
    </button>
  );

  return (
    <>
      {/* TODO: update this logic */}
      {/* {projectId && (
        <CreateLabelModal
          isOpen={labelModal}
          handleClose={() => setLabelModal(false)}
          projectId={projectId}
          user={user}
        />
      )} */}
      <Combobox
        as="div"
        className={`flex-shrink-0 text-left ${className}`}
        value={value}
        onChange={onChange}
        disabled={disabled}
        multiple
      >
        <Combobox.Button as={React.Fragment}>
          <button
            ref={setReferenceElement}
            type="button"
            className={`flex items-center justify-between gap-1 w-full text-xs ${
              disabled
                ? "cursor-not-allowed text-custom-text-200"
                : value.length <= maxRender
                ? "cursor-pointer"
                : "cursor-pointer hover:bg-custom-background-80"
            }  ${buttonClassName}`}
          >
            <div className={`flex  items-center gap-2 text-custom-text-200`}>
              {value.length > 0 ? (
                value.length <= maxRender ? (
                  <>
                    {labels
                      .filter((l) => value.includes(l.id))
                      .map((label) => (
                        <div
                          key={label.id}
                          className="flex cursor-default items-center flex-shrink-0 rounded-md border border-custom-border-300 px-2.5 py-1 text-xs shadow-sm"
                        >
                          <div className="flex items-center gap-1.5 text-custom-text-200">
                            <span
                              className="h-2 w-2 flex-shrink-0 rounded-full"
                              style={{
                                backgroundColor: label?.color ?? "#000000",
                              }}
                            />
                            {label.name}
                          </div>
                        </div>
                      ))}
                  </>
                ) : (
                  <div className="flex cursor-default items-center flex-shrink-0 rounded-md border border-custom-border-300 px-2.5 py-1 text-xs shadow-sm">
                    <Tooltip
                      position="top"
                      tooltipHeading="Labels"
                      tooltipContent={labels
                        .filter((l) => value.includes(l.id))
                        .map((l) => l.name)
                        .join(", ")}
                    >
                      <div className="flex items-center gap-1.5 text-custom-text-200">
                        <span className="h-2 w-2 flex-shrink-0 rounded-full bg-custom-primary" />
                        {`${value.length} Labels`}
                      </div>
                    </Tooltip>
                  </div>
                )
              ) : (
                ""
              )}
            </div>
            {!hideDropdownArrow && !disabled && <ChevronDown className="h-3 w-3" aria-hidden="true" />}
          </button>
        </Combobox.Button>

        <Combobox.Options>
          <div
            className={`z-10 border border-custom-border-300 px-2 py-2.5 rounded bg-custom-background-100 text-xs shadow-custom-shadow-rg focus:outline-none w-48 whitespace-nowrap my-1 ${optionsClassName}`}
            ref={setPopperElement}
            style={styles.popper}
            {...attributes.popper}
          >
            <div className="flex w-full items-center justify-start rounded border border-custom-border-200 bg-custom-background-90 px-2">
              <Search className="h-3.5 w-3.5 text-custom-text-300" />
              <Combobox.Input
                className="w-full bg-transparent py-1 px-2 text-xs text-custom-text-200 placeholder:text-custom-text-400 focus:outline-none"
                value={query}
                onChange={(e) => setQuery(e.target.value)}
                placeholder="Search"
                displayValue={(assigned: any) => assigned?.name}
              />
            </div>
            <div className={`mt-2 space-y-1 max-h-48 overflow-y-scroll`}>
              {filteredOptions ? (
                filteredOptions.length > 0 ? (
                  filteredOptions.map((option) => (
                    <Combobox.Option
                      key={option.value}
                      value={option.value}
                      className={({ active, selected }) =>
                        `flex items-center justify-between gap-2 cursor-pointer select-none truncate rounded px-1 py-1.5 ${
                          active && !selected ? "bg-custom-background-80" : ""
                        } ${selected ? "text-custom-text-100" : "text-custom-text-200"}`
                      }
                    >
                      {({ selected }) => (
                        <>
                          {option.content}
                          {selected && <Check className={`h-3.5 w-3.5`} />}
                        </>
                      )}
                    </Combobox.Option>
                  ))
                ) : (
                  <span className="flex items-center gap-2 p-1">
                    <p className="text-left text-custom-text-200 ">No matching results</p>
                  </span>
                )
              ) : (
                <p className="text-center text-custom-text-200">Loading...</p>
              )}
            </div>
            {footerOption}
          </div>
        </Combobox.Options>
      </Combobox>
    </>
  );
};