import React, { FC, useState, Fragment } from "react";
// popper js
import { usePopper } from "react-popper";
// ui
import { Avatar, Input } from "@plane/ui";
import { Listbox } from "@headlessui/react";
// icons
import { Check, Search, User2 } from "lucide-react";
// types
import { IWorkspaceMember } from "types";

export interface IWorkspaceMemberSelect {
  value: IWorkspaceMember | undefined;
  onChange: (value: IWorkspaceMember) => void;
  options: IWorkspaceMember[];
  placeholder?: string;
  disabled?: boolean;
}

export const WorkspaceMemberSelect: FC<IWorkspaceMemberSelect> = (props) => {
  const { value, onChange, options, placeholder = "Select Member", disabled = false } = props;
  // states
  const [query, setQuery] = useState("");

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

  const { styles, attributes } = usePopper(referenceElement, popperElement, {
    placement: "auto",
  });

  // const options = workspaceMembers?.map((member: any) => ({
  //   value: member.member.id,
  //   query: member.member.display_name,
  //   content: (
  //     <div className="flex items-center gap-2">
  //       <Avatar user={member.member} />
  //       {member.member.display_name}
  //     </div>
  //   ),
  // }));

  // const selectedOption = workspaceMembers?.find((member) => member.member.id === value);

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

  const label = (
    <div
      className="flex items-center justify-between gap-2 w-full text-xs px-2.5 py-1.5 rounded-md border border-custom-border-300 duration-300 focus:outline-none
            "
    >
      {value ? (
        <>
          <Avatar name={value?.member.display_name} src={value?.member.avatar} />
          <span className="text-xs leading-4"> {value?.member.display_name}</span>
        </>
      ) : (
        <>
          <User2 className="h-[18px] w-[18px]" />
          <span className="text-xs leading-4">{placeholder}</span>
        </>
      )}
    </div>
  );

  return (
    <Listbox as="div" className={`flex-shrink-0 text-left`} value={value} onChange={onChange} disabled={disabled}>
      <Listbox.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" : "cursor-pointer hover:bg-custom-background-80"
          }`}
        >
          {label}
        </button>
      </Listbox.Button>
      <Listbox.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`}
          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" />
            <Input
              className="w-full bg-transparent py-1 px-2 text-xs text-custom-text-200 placeholder:text-custom-text-400 border-none focus:outline-none"
              value={query}
              onChange={(e) => setQuery(e.target.value)}
              placeholder="Search"
            />
          </div>
          <div className={`mt-2 space-y-1 max-h-48 overflow-y-scroll`}>
            {filteredOptions ? (
              filteredOptions.length > 0 ? (
                filteredOptions.map((workspaceMember: IWorkspaceMember) => (
                  <Listbox.Option
                    key={workspaceMember.id}
                    value={workspaceMember}
                    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 }) => (
                      <>
                        <div className="flex items-center gap-2">
                          <Avatar name={workspaceMember?.member.display_name} src={workspaceMember?.member.avatar} />
                          {workspaceMember.member.display_name}
                        </div>
                        {selected && <Check className="h-3.5 w-3.5" />}
                      </>
                    )}
                  </Listbox.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>
        </div>
      </Listbox.Options>
    </Listbox>
  );
};