import { useEffect, useRef, useState } from 'react';
import { useDispatch, useSelector } from 'react-redux';
import { NavLink, useNavigate } from 'react-router-dom';
import DocsGPT3 from './assets/cute_docsgpt3.svg';
import Discord from './assets/discord.svg';
import Expand from './assets/expand.svg';
import Github from './assets/github.svg';
import Hamburger from './assets/hamburger.svg';
import HamburgerDark from './assets/hamburger-dark.svg';
import Info from './assets/info.svg';
import SettingGear from './assets/settingGear.svg';
import Twitter from './assets/TwitterX.svg';
import Add from './assets/add.svg';
import UploadIcon from './assets/upload.svg';
import { ActiveState } from './models/misc';
import APIKeyModal from './preferences/APIKeyModal';
import DeleteConvModal from './modals/DeleteConvModal';

import {
  selectApiKeyStatus,
  selectSelectedDocs,
  selectSelectedDocsStatus,
  selectSourceDocs,
  setSelectedDocs,
  selectConversations,
  setConversations,
  selectConversationId,
  selectModalStateDeleteConv,
  setModalStateDeleteConv,
  setSourceDocs,
} from './preferences/preferenceSlice';
import {
  setConversation,
  updateConversationId,
} from './conversation/conversationSlice';
import { useMediaQuery, useOutsideAlerter } from './hooks';
import Upload from './upload/Upload';
import { Doc, getConversations, getDocs } from './preferences/preferenceApi';
import SelectDocsModal from './preferences/SelectDocsModal';
import ConversationTile from './conversation/ConversationTile';
import { useDarkTheme } from './hooks';
import SourceDropdown from './components/SourceDropdown';
import { useTranslation } from 'react-i18next';
interface NavigationProps {
  navOpen: boolean;
  setNavOpen: React.Dispatch<React.SetStateAction<boolean>>;
}
/* const NavImage: React.FC<{
  Light: string | undefined;
  Dark: string | undefined;
}> = ({ Light, Dark }) => {
  return (
    <>
      <img src={Dark} alt="icon" className="ml-2 hidden w-5 dark:block " />
      <img src={Light} alt="icon" className="ml-2 w-5 dark:hidden filter dark:invert" />
    </>
  );
};
NavImage.propTypes = {
  Light: PropTypes.string,
  Dark: PropTypes.string,
}; */
export default function Navigation({ navOpen, setNavOpen }: NavigationProps) {
  const dispatch = useDispatch();
  const docs = useSelector(selectSourceDocs);
  const selectedDocs = useSelector(selectSelectedDocs);
  const conversations = useSelector(selectConversations);
  const modalStateDeleteConv = useSelector(selectModalStateDeleteConv);
  const conversationId = useSelector(selectConversationId);

  const { isMobile } = useMediaQuery();
  const [isDarkTheme] = useDarkTheme();
  const [isDocsListOpen, setIsDocsListOpen] = useState(false);
  const { t } = useTranslation();

  const isApiKeySet = useSelector(selectApiKeyStatus);
  const [apiKeyModalState, setApiKeyModalState] =
    useState<ActiveState>('INACTIVE');

  const isSelectedDocsSet = useSelector(selectSelectedDocsStatus);
  const [selectedDocsModalState, setSelectedDocsModalState] =
    useState<ActiveState>(isSelectedDocsSet ? 'INACTIVE' : 'ACTIVE');

  const [uploadModalState, setUploadModalState] =
    useState<ActiveState>('INACTIVE');

  const navRef = useRef(null);
  const apiHost = import.meta.env.VITE_API_HOST || 'https://docsapi.arc53.com';

  const navigate = useNavigate();

  useEffect(() => {
    if (!conversations) {
      fetchConversations();
    }
  }, [conversations, dispatch]);

  async function fetchConversations() {
    return await getConversations()
      .then((fetchedConversations) => {
        dispatch(setConversations(fetchedConversations));
      })
      .catch((error) => {
        console.error('Failed to fetch conversations: ', error);
      });
  }

  const handleDeleteAllConversations = () => {
    fetch(`${apiHost}/api/delete_all_conversations`, {
      method: 'POST',
    })
      .then(() => {
        fetchConversations();
      })
      .catch((error) => console.error(error));
  };

  const handleDeleteConversation = (id: string) => {
    fetch(`${apiHost}/api/delete_conversation?id=${id}`, {
      method: 'POST',
    })
      .then(() => {
        fetchConversations();
      })
      .catch((error) => console.error(error));
  };

  const handleDeleteClick = (doc: Doc) => {
    const docPath = `indexes/local/${doc.name}`;

    fetch(`${apiHost}/api/delete_old?path=${docPath}`, {
      method: 'GET',
    })
      .then(() => {
        // remove the image element from the DOM
        // const imageElement = document.querySelector(
        //   `#img-${index}`,
        // ) as HTMLElement;
        // const parentElement = imageElement.parentNode as HTMLElement;
        // parentElement.parentNode?.removeChild(parentElement);

        return getDocs();
      })
      .then((updatedDocs) => {
        dispatch(setSourceDocs(updatedDocs));
        dispatch(
          setSelectedDocs(
            updatedDocs?.find((doc) => doc.name.toLowerCase() === 'default'),
          ),
        );
      })
      .catch((error) => console.error(error));
  };

  const handleConversationClick = (index: string) => {
    // fetch the conversation from the server and setConversation in the store
    fetch(`${apiHost}/api/get_single_conversation?id=${index}`, {
      method: 'GET',
    })
      .then((response) => response.json())
      .then((data) => {
        navigate('/');
        dispatch(setConversation(data));
        dispatch(
          updateConversationId({
            query: { conversationId: index },
          }),
        );
      });
  };

  async function updateConversationName(updatedConversation: {
    name: string;
    id: string;
  }) {
    await fetch(`${apiHost}/api/update_conversation_name`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify(updatedConversation),
    })
      .then((response) => response.json())
      .then((data) => {
        if (data) {
          navigate('/');
          fetchConversations();
        }
      })
      .catch((err) => {
        console.error(err);
      });
  }
  useOutsideAlerter(
    navRef,
    () => {
      if (isMobile && navOpen && apiKeyModalState === 'INACTIVE') {
        setNavOpen(false);
        setIsDocsListOpen(false);
      }
    },
    [navOpen, isDocsListOpen, apiKeyModalState],
  );

  /*
    Needed to fix bug where if mobile nav was closed and then window was resized to desktop, nav would still be closed but the button to open would be gone, as per #1 on issue #146
  */

  useEffect(() => {
    setNavOpen(!isMobile);
  }, [isMobile]);
  return (
    <>
      {!navOpen && (
        <button
          className="duration-25 absolute  top-3 left-3 z-20 hidden transition-all md:block"
          onClick={() => {
            setNavOpen(!navOpen);
          }}
        >
          <img
            src={Expand}
            alt="menu toggle"
            className={`${
              !navOpen ? 'rotate-180' : 'rotate-0'
            } m-auto transition-all duration-200`}
          />
        </button>
      )}
      <div
        ref={navRef}
        className={`${
          !navOpen && '-ml-96 md:-ml-[18rem]'
        } duration-20 fixed top-0 z-20 flex h-full w-72 flex-col border-r-[1px] border-b-0 bg-white transition-all dark:border-r-purple-taupe dark:bg-chinese-black dark:text-white`}
      >
        <div
          className={'visible mt-2 flex h-[6vh] w-full justify-between md:h-12'}
        >
          <div className="my-auto mx-4 flex cursor-pointer gap-1.5">
            <img className="mb-2 h-10" src={DocsGPT3} alt="" />
            <p className="my-auto text-2xl font-semibold">DocsGPT</p>
          </div>
          <button
            className="float-right mr-5"
            onClick={() => {
              setNavOpen(!navOpen);
            }}
          >
            <img
              src={Expand}
              alt="menu toggle"
              className={`${
                !navOpen ? 'rotate-180' : 'rotate-0'
              } m-auto transition-all duration-200`}
            />
          </button>
        </div>
        <NavLink
          to={'/'}
          onClick={() => {
            dispatch(setConversation([]));
            dispatch(
              updateConversationId({
                query: { conversationId: null },
              }),
            );
          }}
          className={({ isActive }) =>
            `${
              isActive ? 'bg-gray-3000 dark:bg-transparent' : ''
            } group sticky mx-4 mt-4 flex cursor-pointer gap-2.5 rounded-3xl border border-silver p-3 hover:border-rainy-gray hover:bg-gray-3000 dark:border-purple-taupe dark:text-white dark:hover:bg-transparent`
          }
        >
          <img
            src={Add}
            alt="new"
            className="opacity-80 group-hover:opacity-100"
          />
          <p className=" text-sm text-dove-gray group-hover:text-neutral-600 dark:text-chinese-silver dark:group-hover:text-bright-gray">
            {t('newChat')}
          </p>
        </NavLink>
        <div className="mb-auto h-[78vh] overflow-y-auto overflow-x-hidden dark:text-white">
          {conversations && conversations.length > 0 ? (
            <div>
              <div className=" my-auto mx-4 mt-2 flex h-6 items-center justify-between gap-4 rounded-3xl">
                <p className="mt-1 ml-4 text-sm font-semibold">{t('chats')}</p>
              </div>
              <div className="conversations-container">
                {conversations?.map((conversation) => (
                  <ConversationTile
                    key={conversation.id}
                    conversation={conversation}
                    selectConversation={(id) => handleConversationClick(id)}
                    onDeleteConversation={(id) => handleDeleteConversation(id)}
                    onSave={(conversation) =>
                      updateConversationName(conversation)
                    }
                  />
                ))}
              </div>
            </div>
          ) : (
            <></>
          )}
        </div>

        <div className="flex h-auto flex-col justify-end text-eerie-black dark:text-white">
          <div className="flex flex-col-reverse border-b-[1px] dark:border-b-purple-taupe">
            <div className="relative my-4 mx-4 flex gap-2">
              <SourceDropdown
                options={docs}
                selectedDocs={selectedDocs}
                setSelectedDocs={setSelectedDocs}
                isDocsListOpen={isDocsListOpen}
                setIsDocsListOpen={setIsDocsListOpen}
                handleDeleteClick={handleDeleteClick}
              />
              <img
                className="mt-2 h-9 w-9 hover:cursor-pointer"
                src={UploadIcon}
                onClick={() => setUploadModalState('ACTIVE')}
              ></img>
            </div>
            <p className="ml-5 mt-3 text-sm font-semibold">{t('sourceDocs')}</p>
          </div>
          <div className="flex flex-col gap-2 border-b-[1px] py-2 dark:border-b-purple-taupe">
            <NavLink
              to="/settings"
              className={({ isActive }) =>
                `my-auto mx-4 flex h-9 cursor-pointer gap-4 rounded-3xl hover:bg-gray-100 dark:hover:bg-[#28292E] ${
                  isActive ? 'bg-gray-3000 dark:bg-transparent' : ''
                }`
              }
            >
              <img
                src={SettingGear}
                alt="icon"
                className="ml-2 w-5 filter dark:invert"
              />
              <p className="my-auto text-sm text-eerie-black  dark:text-white">
                {t('settings.label')}
              </p>
            </NavLink>
          </div>
          <div className="flex justify-between gap-2 border-b-[1.5px] py-2 dark:border-b-purple-taupe">
            <NavLink
              to="/about"
              className={({ isActive }) =>
                `my-auto mx-4 flex h-9 cursor-pointer gap-4 rounded-3xl hover:bg-gray-100 dark:hover:bg-[#28292E] ${
                  isActive ? 'bg-gray-3000 dark:bg-[#28292E]' : ''
                }`
              }
            >
              <img
                src={Info}
                alt="icon"
                className="ml-2 w-5 filter dark:invert"
              />
              <p className="my-auto pr-1 text-sm">{t('about')}</p>
            </NavLink>
            <div className="flex items-center justify-evenly gap-1 px-1">
              <NavLink
                target="_blank"
                to={'https://discord.gg/WHJdfbQDR4'}
                className={
                  'rounded-full hover:bg-gray-100 dark:hover:bg-[#28292E]'
                }
              >
                <img
                  src={Discord}
                  alt="discord"
                  className="m-2 w-6 self-center filter dark:invert"
                />
              </NavLink>
              <NavLink
                target="_blank"
                to={'https://twitter.com/docsgptai'}
                className={
                  'rounded-full hover:bg-gray-100 dark:hover:bg-[#28292E]'
                }
              >
                <img
                  src={Twitter}
                  alt="x"
                  className="m-2 w-5 self-center filter dark:invert"
                />
              </NavLink>
              <NavLink
                target="_blank"
                to={'https://github.com/arc53/docsgpt'}
                className={
                  'rounded-full hover:bg-gray-100 dark:hover:bg-[#28292E]'
                }
              >
                <img
                  src={Github}
                  alt="github"
                  className="m-2 w-6 self-center filter dark:invert"
                />
              </NavLink>
            </div>
          </div>
        </div>
      </div>
      <div className="fixed z-10 h-16 w-full border-b-2 bg-gray-50 dark:border-b-purple-taupe dark:bg-chinese-black md:hidden">
        <button
          className="mt-5 ml-6 h-6 w-6 md:hidden"
          onClick={() => setNavOpen(true)}
        >
          <img
            src={isDarkTheme ? HamburgerDark : Hamburger}
            alt="menu toggle"
            className="w-7"
          />
        </button>
      </div>

      <SelectDocsModal
        modalState={selectedDocsModalState}
        setModalState={setSelectedDocsModalState}
        isCancellable={isSelectedDocsSet}
      />
      <APIKeyModal
        modalState={apiKeyModalState}
        setModalState={setApiKeyModalState}
        isCancellable={isApiKeySet}
      />
      <DeleteConvModal
        modalState={modalStateDeleteConv}
        setModalState={setModalStateDeleteConv}
        handleDeleteAllConv={handleDeleteAllConversations}
      />
      <Upload
        modalState={uploadModalState}
        setModalState={setUploadModalState}
      ></Upload>
    </>
  );
}