import React, { useCallback, useEffect, useRef, useState } from 'react';
import { createPortal } from 'react-dom';
import { Helmet } from 'react-helmet-async';
import { Link, useNavigate, useParams } from 'react-router-dom';
import { Tooltip } from 'react-tooltip';
import { useSubplebbit } from '@plebbit/plebbit-react-hooks';
import { debounce } from 'lodash';
import { Container, NavBar, Header, Break, PostMenu, PostForm } from '../styled/views/Board.styled';
import { TopBar, BoardForm, Footer, ReplyFormLink} from '../styled/views/Thread.styled';
import { PostMenuCatalog } from '../styled/views/Catalog.styled';
import ImageBanner from '../ImageBanner';
import Post from '../Post';
import CreateBoardModal from '../modals/CreateBoardModal';
import AdminListModal from '../modals/AdminListModal';
import OfflineIndicator from '../OfflineIndicator';
import SettingsModal from '../modals/SettingsModal';
import getDate from '../../utils/getDate';
import handleImageClick from '../../utils/handleImageClick';
import handleStyleChange from '../../utils/handleStyleChange';
import useGeneralStore from '../../hooks/stores/useGeneralStore';
import packageJson from '../../../package.json'
const {version} = packageJson


const Description = () => {
  const {
    defaultSubplebbits,
    isSettingsOpen, setIsSettingsOpen,
    selectedAddress, setSelectedAddress,
    selectedStyle,
    selectedThread, setSelectedThread,
    setSelectedTitle,
  } = useGeneralStore(state => state);
  
  const navigate = useNavigate();

  const threadMenuRefs = useRef({});
  const postMenuRef = useRef(null);
  const postMenuCatalogRef = useRef(null);

  const [isAdminListOpen, setIsAdminListOpen] = useState(false);
  const [prevScrollPos, setPrevScrollPos] = useState(0);
  const [visible, setVisible] = useState(true);
  const [menuPosition, setMenuPosition] = useState({top: 0, left: 0});
  const [openMenuCid, setOpenMenuCid] = useState(null);
  const [isCreateBoardOpen, setIsCreateBoardOpen] = useState(false);

  const { subplebbitAddress, threadCid } = useParams();
  const subplebbit = useSubplebbit({subplebbitAddress: selectedAddress});
  

  const handleOptionClick = () => {
    setOpenMenuCid(null);
  };

  const handleOutsideClick = useCallback((e) => {
    if (openMenuCid !== null && !postMenuRef.current.contains(e.target) && !postMenuCatalogRef.current.contains(e.target)) {
      setOpenMenuCid(null);
    }
  }, [openMenuCid, postMenuRef, postMenuCatalogRef]);


  useEffect(() => {
    if (openMenuCid !== null) {
      document.addEventListener('click', handleOutsideClick);
    } else {
      document.removeEventListener('click', handleOutsideClick);
    }
    
    return () => {
      document.removeEventListener('click', handleOutsideClick);
    };
  }, [openMenuCid, handleOutsideClick]);

  
  useEffect(() => {
    window.scrollTo(0, 0);
  }, []);


  // temporary title from JSON, gets subplebbitAddress and threadCid from URL
  useEffect(() => {
    setSelectedAddress(subplebbitAddress);
    setSelectedThread(threadCid);
    const selectedSubplebbit = defaultSubplebbits.find((subplebbit) => subplebbit.address === subplebbitAddress);
    if (selectedSubplebbit) {
      setSelectedTitle(selectedSubplebbit.title);
    }
  }, [subplebbitAddress, setSelectedAddress, setSelectedTitle, defaultSubplebbits, setSelectedThread, threadCid]);

  // mobile navbar scroll effect
  useEffect(() => {
    const debouncedHandleScroll = debounce(() => {
      const currentScrollPos = window.scrollY;
      setVisible(prevScrollPos > currentScrollPos || currentScrollPos < 10);
      setPrevScrollPos(currentScrollPos);
    }, 50);
  
    window.addEventListener('scroll', debouncedHandleScroll);
  
    return () => window.removeEventListener('scroll', debouncedHandleScroll);
  }, [prevScrollPos, visible]);

  // mobile navbar board select functionality
  const handleSelectChange = (event) => {
    const selected = event.target.value;

    if (selected === 'subscriptions') {
      navigate(`/p/subscriptions`);
      return;
    } else if (selected === 'all') {
      navigate(`/p/all`);
      return;
    }

    const selectedTitle = defaultSubplebbits.find((subplebbit) => subplebbit.address === selected).title;
    setSelectedTitle(selectedTitle);
    setSelectedAddress(selected);
    navigate(`/p/${selected}`);
  };


  return (
    <>
      <Helmet>
          <title>
          {"Board Description - " + (subplebbit.title || subplebbit.address) + " - plebchan"}
          </title>
        </Helmet>
      <Container>
        <CreateBoardModal
        selectedStyle={selectedStyle}
        isOpen={isCreateBoardOpen}
        closeModal={() => setIsCreateBoardOpen(false)} />
        <AdminListModal
        selectedStyle={selectedStyle}
        isOpen={isAdminListOpen}
        closeModal={() => setIsAdminListOpen(false)}
        roles={subplebbit.roles} />
        <SettingsModal
        selectedStyle={selectedStyle}
        isOpen={isSettingsOpen}
        closeModal={() => setIsSettingsOpen(false)} />
        <NavBar selectedStyle={selectedStyle}>
          <>
          <span className="boardList">
            [
              <Link to={`/p/all`} onClick={() => window.scrollTo(0, 0)}>All</Link>
               / 
              <Link to={`/p/subscriptions`} onClick={() => window.scrollTo(0, 0)}>Subscriptions</Link>
            ]&nbsp;[
            {defaultSubplebbits.map((subplebbit, index) => (
              <span className="boardList" key={`span-${subplebbit.address}`}>
                {index === 0 ? null : "\u00a0"}
                <Link to={`/p/${subplebbit.address}`} key={`a-${subplebbit.address}`} onClick={() => {
                setSelectedTitle(subplebbit.title);
                setSelectedAddress(subplebbit.address);
                }}
                >{subplebbit.title ? subplebbit.title : subplebbit.address}</Link>
                {index !== defaultSubplebbits.length - 1 ? " /" : null}
              </span>
            ))}
            ]
          </span>
            <span className="nav">
              [
              <span id="button-span" style={{cursor: 'pointer'}} onClick={
              () => {
                window.electron && window.electron.isElectron ? (
                  setIsCreateBoardOpen(true)
                ) : (
                  alert(
                    'You can create a board with the desktop version of plebchan, which you can download from here: https://github.com/plebbit/plebchan/releases/latest\n\nIf you are comfortable with the command line, you can also run a board (called "subplebbit") using plebbit-cli: https://github.com/plebbit/plebbit-cli\n\n'
                  )
                )
              }
              }>Create Board</span>
              ]
              [
              <Link to={`/p/${selectedAddress}/c/${selectedThread}/settings`} onClick={() => setIsSettingsOpen(true)}>Settings</Link>
              ]
              [
              <Link to="/">Home</Link>
              ]
            </span>
            <div id="board-nav-mobile" style={{ top: visible ? 0 : '-23px' }}>
              <div className="nav-container">
                <div className="board-select">
                  <strong>Board</strong>
                  &nbsp;
                  <select id="board-select-mobile" value={selectedAddress} onChange={handleSelectChange}>
                    <option value="all">All</option>
                    <option value="subscriptions">Subscriptions</option>
                    {defaultSubplebbits.map(subplebbit => (
                        <option key={`option-${subplebbit.address}`} value={subplebbit.address}
                        >{subplebbit.title ? subplebbit.title : subplebbit.address}</option>
                      ))}
                  </select> 
                  <span id="button-span" style={{cursor: 'pointer'}} onClick={
                  () => alert(
                    'You can create a board with the desktop version of plebchan, which you can download from here: https://github.com/plebbit/plebchan/releases/latest\n\nIf you are comfortable with the command line, you can also run a board (called "subplebbit") using plebbit-cli: https://github.com/plebbit/plebbit-cli\n\n'
                    )
                  }>Create Board</span>
                </div>
                <div className="page-jump">
                  <Link to={`/p/${selectedAddress}/c/${selectedThread}/settings`} onClick={() => setIsSettingsOpen(true)}>Settings</Link>
                  &nbsp;
                  <Link to="/" onClick={() => {handleStyleChange({target: {value: "Yotsuba"}}); window.scrollTo(0, 0);}}>Home</Link>
                </div>
              </div>
            </div>
            <div id="separator-mobile">&nbsp;</div>
            <div id="separator-mobile">&nbsp;</div>
          </>
        </NavBar>
        <Header selectedStyle={selectedStyle}>
          <>
            <div className="banner">
              <ImageBanner />
            </div>
              <>
              <div className="board-title">{subplebbit.title ?? null}</div>
              <div className="board-address">p/{subplebbit.address}
                <OfflineIndicator 
                address={subplebbit.address} 
                className="offline"
                tooltipPlace="top" />
              </div>
              </>
          </>
        </Header>
        <Break selectedStyle={selectedStyle} />
        <PostForm selectedStyle={selectedStyle}>
          <ReplyFormLink id="post-form-link" selectedStyle={selectedStyle} style={{marginBottom: '10px'}}>
          <div id="return-button-mobile">
              <span className="btn-wrap" onClick={()=> {window.scrollTo(0, 0)}}>
                <Link to={`/p/${selectedAddress}`}>Return</Link>
              </span>
            </div>
            <div id="catalog-button-mobile">
              <span className="btn-wrap">
                <Link to={`/p/${selectedAddress}/catalog`} onClick={()=> {window.scrollTo(0, 0)}}>Catalog</Link>
              </span>
            </div>
            <div id="bottom-button-mobile">
              <span className="btn-wrap">
                <span style={{cursor: 'pointer'}} onClick={() => window.scrollTo(0, document.body.scrollHeight)} onMouseOver={(event) => event.target.style.cursor='pointer'}>Bottom</span>
              </span>
            </div>
          </ReplyFormLink>
        </PostForm>
        <TopBar selectedStyle={selectedStyle}>
          <span className="style-changer">
            Style:
             
            <select id="style-selector" onChange={handleStyleChange} value={selectedStyle}>
              <option value="Yotsuba">Yotsuba</option>
              <option value="Yotsuba-B">Yotsuba B</option>
              <option value="Futaba">Futaba</option>
              <option value="Burichan">Burichan</option>
              <option value="Tomorrow">Tomorrow</option>
              <option value="Photon">Photon</option>
            </select>
          </span>
          <span className="return-button" id="return-button-desktop">
            [
            <Link to={`/p/${selectedAddress}`}>Return</Link>
            ]
          </span>
          <span className="return-button catalog-button" id="catalog-button-desktop">
            [
            <Link to={`/p/${selectedAddress}/catalog`}>Catalog</Link>
            ]
          </span>
          <span className="return-button catalog-button" id="bottom-button-desktop">
            [
            <span id="button" style={{cursor: 'pointer'}} onClick={() =>  window.scrollTo(0, document.body.scrollHeight)} 
            onMouseOver={(event) => event.target.style.cursor='pointer'} 
            onTouchStart={() =>  window.scrollTo(0, document.body.scrollHeight)}>Bottom</span>
            ]
          </span>
        </TopBar>
        <Tooltip id="tooltip" className="tooltip" />
        <BoardForm selectedStyle={selectedStyle}>
          <>
            <div className="thread">
              <div className="op-container" style={{
              display: subplebbit.rules ? "grid" : "block",
              marginBottom: '10px',
              }}>
                <div className="post op op-desktop">
                  <hr />
                  <div className="post-info">
                    {subplebbit.suggested?.avatarUrl ? (
                      <div className="file" style={{marginBottom: "5px"}}>
                        <div className="file-text">
                          Link:&nbsp;
                          <a href={subplebbit.suggested?.avatarUrl} 
                          target="_blank" rel="noopener noreferrer">{
                          subplebbit.suggested?.avatarUrl.length > 30 ?
                          subplebbit.suggested?.avatarUrl.slice(0, 30) + "..." :
                          subplebbit.suggested?.avatarUrl
                          }
                          </a>&nbsp;(image)
                        </div>
                        <div className="img-container">
                          <span className="file-thumb">
                            <img src={subplebbit.suggested?.avatarUrl} alt="board avatar"
                            onClick={handleImageClick}
                            style={{cursor: "pointer"}} />
                          </span>
                        </div>
                      </div>
                      ) : null}
                    <span className="name-block">
                      <span className="title">Welcome to {subplebbit.title || subplebbit.address}</span>
                      &nbsp;
                      <span className="name capcode"
                      style={{cursor: 'pointer'}}
                      onClick={() => {setIsAdminListOpen(!isAdminListOpen)}}
                      >## Board Admins</span>
                      &nbsp;
                      <span className="date-time">{getDate(subplebbit.createdAt)}</span>
                      &nbsp;
                      <img src="assets/sticky.gif" alt="Sticky" title="Sticky" style={{marginBottom: "-1px", imageRendering: 'pixelated'}} />
                      &nbsp;
                      <img src="assets/closed.gif" alt="Closed" title="Closed" style={{marginBottom: "-1px", imageRendering: 'pixelated'}} />
                      <span>&nbsp;
                          [
                          <Link to={() => {}} style={{textDecoration: "none"}} className="reply-link">Reply</Link>
                          ]
                      </span>
                      <PostMenu 
                        title="Post menu"
                        ref={el => { 
                          threadMenuRefs.current[subplebbit.pubsubTopic] = el;
                        }}
                        className='post-menu-button' 
                        rotated={openMenuCid === subplebbit.pubsubTopic}
                        onClick={(event) => {
                          event.stopPropagation();
                          const rect = threadMenuRefs.current[subplebbit.pubsubTopic].getBoundingClientRect();
                          setMenuPosition({top: rect.top + window.scrollY, left: rect.left});
                          setOpenMenuCid(prevCid => (prevCid === subplebbit.pubsubTopic ? null : subplebbit.pubsubTopic));
                        }}
                      >
                        ▶
                      </PostMenu>
                      {createPortal(
                        <PostMenuCatalog selectedStyle={selectedStyle} 
                        ref={el => {postMenuCatalogRef.current = el}}
                        onClick={(event) => event.stopPropagation()}
                        style={{position: "absolute", 
                        top: menuPosition.top + 7, 
                        left: menuPosition.left}}>
                        <div className={`post-menu-thread post-menu-thread-${subplebbit.pubsubTopic}`}
                        style={{ display: openMenuCid === subplebbit.pubsubTopic ? 'block' : 'none' }}
                        >
                          <ul className="post-menu-catalog">
                            <li onClick={() => handleOptionClick(subplebbit.pubsubTopic)}>Hide thread</li>
                            {/* {isModerator ? (
                              <>
                                change description
                              </>
                            ) : null} */}
                          </ul>
                        </div>
                        </PostMenuCatalog>, document.body
                      )}
                    </span>
                    <blockquote>
                      <div className="custom-paragraph">
                        <Post content={subplebbit.description} />
                      </div>
                    </blockquote>
                  </div>
                </div>
              </div>
            </div>
            <div className="thread-mobile">
              <hr />
              <div className="op-container">
                <div className="post op op-mobile">
                  <div className="post-info-mobile">
                    <button className="post-menu-button-mobile"
                    style={{ all: 'unset', cursor: 'pointer' }}>...</button>
                    <span className="name-block-mobile">
                      <span className="name-mobile capcode"
                      style={{cursor: 'pointer'}}
                      onClick={() => {setIsAdminListOpen(!isAdminListOpen)}}
                      >## Board Admins</span>
                      &nbsp;
                      <span className="thread-icons-mobile"
                      style={{float: "right", marginRight: "18px"}}>
                        <img src="assets/sticky.gif" alt="Sticky" title="Sticky" style={{marginTop: "-1px", marginRight: "2px", imageRendering: 'pixelated'}} />
                        &nbsp;
                        <img src="assets/closed.gif" alt="Closed" title="Closed" style={{marginTop: "-1px", marginRight: "2px", imageRendering: 'pixelated'}} />
                      </span>
                      <br />
                      <span className="subject-mobile"
                    style={{marginBottom: "-15px"}}>Welcome to {subplebbit.title || subplebbit.address}</span>
                      &nbsp;
                    </span>
                    <span className="date-time-mobile post-number-mobile">{getDate(subplebbit.createdAt)}</span>
                    &nbsp;
                  </div>
                  {subplebbit.suggested?.avatarUrl ? (
                    <div className="file-mobile">
                      <div className="img-container">
                        <span className="file-thumb-mobile">
                          <img src={subplebbit.suggested.avatarUrl} alt="board avatar"
                          onClick={handleImageClick}
                          style={{cursor: "pointer"}} />
                          <div className="file-info-mobile">image</div>
                        </span>
                      </div>
                    </div>
                  ) : null}
                  <blockquote className="post-message-mobile">
                    <div className="custom-paragraph">
                      <Post content={subplebbit.description} />
                    </div>
                  </blockquote>
                </div>
                <div className="post-link-mobile">
                  <Link to={() => {}} className="button-mobile">View Thread</Link>
                </div>
              </div>
            </div>
          </>
        </BoardForm>
        <Footer selectedStyle={selectedStyle}>
          <Break id="break" selectedStyle={selectedStyle} style={{
            marginTop: "-36px",
            width: "100%",
          }} />
          <Break selectedStyle={selectedStyle} style={{
            width: "100%",
          }} />
          <span className="style-changer" style={{
            float: "right",
            marginTop: "2px",
          }}>
            Style:
             
            <select id="style-selector" onChange={handleStyleChange} value={selectedStyle}>
              <option value="Yotsuba">Yotsuba</option>
              <option value="Yotsuba-B">Yotsuba B</option>
              <option value="Futaba">Futaba</option>
              <option value="Burichan">Burichan</option>
              <option value="Tomorrow">Tomorrow</option>
              <option value="Photon">Photon</option>
            </select>
          </span>
          <NavBar selectedStyle={selectedStyle} style={{
            marginTop: "42px",
          }}>
            <>
            <span className="boardList">
              [
                <Link to={`/p/all`} onClick={() => window.scrollTo(0, 0)}>All</Link>
                 / 
                <Link to={`/p/subscriptions`} onClick={() => window.scrollTo(0, 0)}>Subscriptions</Link>
              ]&nbsp;
            </span>
            {defaultSubplebbits.map((subplebbit, index) => (
              <span className="boardList" key={`span-${subplebbit.address}`}>
                {index === 0 ? null : "\u00a0"}
                <Link to={`/p/${subplebbit.address}`} key={`a-${subplebbit.address}`} onClick={() => {
                setSelectedTitle(subplebbit.title);
                setSelectedAddress(subplebbit.address);
                }}
                >{subplebbit.title ? subplebbit.title : subplebbit.address}</Link>
                {index !== defaultSubplebbits.length - 1 ? " /" : null}
              </span>
            ))}
            <span className="nav">
              [
              <span id="button-span" style={{cursor: 'pointer'}} onClick={
              () => {
                window.electron && window.electron.isElectron ? (
                  setIsCreateBoardOpen(true)
                ) : (
                  alert(
                    'You can create a board with the desktop version of plebchan, which you can download from here: https://github.com/plebbit/plebchan/releases/latest\n\nIf you are comfortable with the command line, you can also run a board (called "subplebbit") using plebbit-cli: https://github.com/plebbit/plebbit-cli\n\n'
                  )
                )
              }
              }>Create Board</span>
              ]
                [
                <Link to={`/p/${selectedAddress}/c/${selectedThread}/settings`} onClick={() => setIsSettingsOpen(true)}>Settings</Link>
                ]
                [
                <Link to="/" onClick={() => handleStyleChange({target: {value: "Yotsuba"}}
                )}>Home</Link>
                ]
              </span>
            </>
          </NavBar>
          <div id="version">
            plebchan v{version}. GPL-2.0
          </div>
          <div className="footer-links"
            style={{
              textAlign: "center",
              fontSize: "x-small",
              fontFamily: "arial",
              marginTop: "5px",
              marginBottom: "15px",
            }}>
            <a style={{textDecoration: 'underline'}} href="https://plebbit.com" target="_blank" rel="noopener noreferrer">About</a>
            &nbsp;•&nbsp;  
            <a style={{textDecoration: 'underline'}} href="https://github.com/plebbit/plebchan/releases/latest" target="_blank" rel="noopener noreferrer">App</a>
            &nbsp;•&nbsp;
            <a style={{textDecoration: 'underline'}} href="https://twitter.com/plebchan_eth" target="_blank" rel="noopener noreferrer">Twitter</a>
            &nbsp;•&nbsp;  
            <a style={{textDecoration: 'underline'}} href="https://t.me/plebbit" target="_blank" rel="noopener noreferrer">Telegram</a>
          </div>
        </Footer>
      </Container>
    </>
  );
}

export default Description;