'use client'

import { AdSlot } from '@/components/GoogleAdsense'
import Live2D from '@/components/Live2D'
import LoadingCover from '@/components/LoadingCover'
import dynamic from 'next/dynamic'
import { createContext, useContext, useEffect, useRef, useState } from 'react'
import { siteConfig } from '@/lib/config'
import { useGlobal } from '@/lib/global'
import { useRouter } from 'next/router'
import { getShortId } from '@/lib/utils/pageId'
import Announcement from '../components/Announcement'
import ArticleInfo from '../components/ArticleInfo'
import BottomMenuBar from '../components/BottomMenuBar'
import Catalog from '../components/Catalog'
import Footer from '../components/Footer'
import Header from '../components/Header'
import InfoCard from '../components/InfoCard'
import JumpToTopButton from '../components/JumpToTopButton'
import NavPostList from '../components/NavPostList'
import PageNavDrawer from '../components/PageNavDrawer'
import RevolverMaps from '../components/RevolverMaps'
import CONFIG from '../config'
import { Style } from '../style'

const AlgoliaSearchModal = dynamic(
  () => import('@/components/AlgoliaSearchModal'),
  { ssr: false }
)
const WWAds = dynamic(() => import('@/components/WWAds'), { ssr: false })

// 主題全域變數
const ThemeGlobalGitbook = createContext()
const useGitBookGlobal = () => useContext(ThemeGlobalGitbook)

/**
 * 為最新文章加入紅點標記
 */
function getNavPagesWithLatest(allNavPages, latestPosts, post) {
  // localStorage 儲存 id 與上次閱讀時間戳： posts_read_time = {"${post.id}":"Date()"}
  const postReadTime = JSON.parse(
    localStorage.getItem('post_read_time') || '{}'
  )
  if (post) {
    postReadTime[getShortId(post.id)] = new Date().getTime()
  }
  // 更新記錄
  localStorage.setItem('post_read_time', JSON.stringify(postReadTime))

  return allNavPages?.map(item => {
    const res = {
      short_id: item.short_id,
      title: item.title || '',
      pageCoverThumbnail: item.pageCoverThumbnail || '',
      category: item.category || null,
      tags: item.tags || null,
      summary: item.summary || null,
      slug: item.slug,
      href: item.href,
      pageIcon: item.pageIcon || '',
      lastEditedDate: item.lastEditedDate
    }
    // 屬於最新的文章通常 6 篇 &&（無閱讀紀錄 || 最近更新時間大於上次閱讀時間）
    if (
      latestPosts.some(post => post?.id.indexOf(item?.short_id) === 14) &&
      (!postReadTime[item.short_id] ||
        postReadTime[item.short_id] < new Date(item.lastEditedDate).getTime())
    ) {
      return { ...res, isLatest: true }
    } else {
      return res
    }
  })
}

/**
 * 基礎佈局
 * 左右雙欄，手機版改為頂部導覽列
 */
const LayoutBase = props => {
  const {
    children,
    post,
    allNavPages,
    latestPosts,
    slotLeft,
    slotRight,
    slotTop
  } = props
  const { fullWidth } = useGlobal()
  const router = useRouter()
  const [tocVisible, changeTocVisible] = useState(false)
  const [pageNavVisible, changePageNavVisible] = useState(false)
  const [filteredNavPages, setFilteredNavPages] = useState(allNavPages)

  const searchModal = useRef(null)

  useEffect(() => {
    setFilteredNavPages(getNavPagesWithLatest(allNavPages, latestPosts, post))
  }, [router])

  const GITBOOK_LOADING_COVER = siteConfig(
    'GITBOOK_LOADING_COVER',
    true,
    CONFIG
  )
  return (
    <ThemeGlobalGitbook.Provider
      value={{
        searchModal,
        tocVisible,
        changeTocVisible,
        filteredNavPages,
        setFilteredNavPages,
        allNavPages,
        pageNavVisible,
        changePageNavVisible
      }}>
      <Style />

      <div
        id='theme-gitbook'
        className={`${siteConfig('FONT_STYLE')} pb-16 md:pb-0 scroll-smooth bg-white dark:bg-black w-full h-full min-h-screen justify-center dark:text-gray-300`}>
        <AlgoliaSearchModal cRef={searchModal} {...props} />

        {/* 頂部導覽列 */}
        <Header {...props} />

        <main
          id='wrapper'
          className={`${siteConfig('LAYOUT_SIDEBAR_REVERSE') ? 'flex-row-reverse' : ''} relative flex justify-between w-full gap-x-6 h-full mx-auto max-w-screen-4xl`}>
          {/* 左側抽屜 */}
          {fullWidth ? null : (
            <div className={'hidden md:block relative z-10 '}>
              <div className='w-80 pt-14 pb-4 sticky top-0 h-screen flex justify-between flex-col'>
                {/* 導覽清單 */}
                <div className='overflow-y-scroll scroll-hidden pt-10 pl-5'>
                  {/* 嵌入區塊 */}
                  {slotLeft}

                  {/* 文章列表 */}
                  <NavPostList filteredNavPages={filteredNavPages} {...props} />
                </div>
                {/* 頁尾 */}
                <Footer {...props} />
              </div>
            </div>
          )}

          {/* 內容區域 */}
          <div
            id='center-wrapper'
            className='flex flex-col justify-between w-full relative z-10 pt-14 min-h-screen'>
            <div
              id='container-inner'
              className={`w-full ${fullWidth ? 'px-5' : 'max-w-3xl px-3 lg:px-0'} justify-center mx-auto`}>
              {slotTop}
              <WWAds className='w-full' orientation='horizontal' />

              {children}

              {/* Google 廣告 */}
              <AdSlot type='in-article' />
              <WWAds className='w-full' orientation='horizontal' />
            </div>

            {/* 手機版頁尾 */}
            <div className='md:hidden'>
              <Footer {...props} />
            </div>
          </div>

          {/* 右側資訊欄 */}
          {fullWidth ? null : (
            <div
              className={
                'w-72 hidden 2xl:block dark:border-transparent flex-shrink-0 relative z-10 '
              }>
              <div className='py-14 sticky top-0'>
                <ArticleInfo post={props?.post ? props?.post : props.notice} />

                <div>
                  {/* 桌面版目錄 */}
                  <Catalog {...props} />
                  {slotRight}
                  {router.route === '/' && (
                    <>
                      <InfoCard {...props} />
                      {siteConfig(
                        'GITBOOK_WIDGET_REVOLVER_MAPS',
                        null,
                        CONFIG
                      ) === 'true' && <RevolverMaps />}
                      <Live2D />
                    </>
                  )}
                  {/* 主題首頁僅顯示公告 */}
                  <Announcement {...props} />
                </div>

                <AdSlot type='in-article' />
                <Live2D />
              </div>
            </div>
          )}
        </main>

        {GITBOOK_LOADING_COVER && <LoadingCover />}

        {/* 回頂按鈕 */}
        <JumpToTopButton />

        {/* 手機版導覽抽屜 */}
        <PageNavDrawer {...props} filteredNavPages={filteredNavPages} />

        {/* 手機版底部導覽列 */}
        <BottomMenuBar {...props} />
      </div>
    </ThemeGlobalGitbook.Provider>
  )
}

export { LayoutBase, useGitBookGlobal }