import BlogPost from '@/components/BlogPost'
import PropTypes from 'prop-types'
import Pagination from '@/components/Pagination'
import BLOG from '@/blog.config'
import { useRouter } from 'next/router'
import { useTheme } from '@/lib/theme'
import { useEffect, useState } from 'react'
import SideBar from '@/components/SideBar'
import throttle from 'lodash.throttle'
import CommonHead from '@/components/CommonHead'

const DefaultLayout = ({ tags, posts, page, currentTag, ...customMeta }) => {
  const meta = {
    title: BLOG.title,
    type: 'website',
    ...customMeta
  }
  page = page ?? 1
  let postsToShow = []
  let filteredBlogPosts = posts ?? []
  let currentSearch = ''
  if (posts) {
    const router = useRouter()
    if (router.query && router.query.s) {
      currentSearch = router.query.s
      filteredBlogPosts = posts.filter(post => {
        const tagContent = post.tags ? post.tags.join(' ') : ''
        const searchContent = post.title + post.summary + tagContent + post.slug
        return searchContent.toLowerCase().includes(currentSearch.toLowerCase())
      })
    }
  }
  const totalPages = Math.ceil(filteredBlogPosts.length / BLOG.postsPerPage)

  if (posts) {
    postsToShow = filteredBlogPosts.slice(
      BLOG.postsPerPage * (page - 1),
      BLOG.postsPerPage * page
    )
  }
  let showNext = false
  if (filteredBlogPosts) {
    const totalPosts = filteredBlogPosts.length
    showNext = page * BLOG.postsPerPage < totalPosts
  }

  useEffect(() => {
    // 首页隐藏看板娘
    // const ref = document.getElementById('waifu')
    // if (ref) {
    //   ref.remove()
    // }
    window.addEventListener('resize', changeColumnCount)
    changeColumnCount()
    return () => {
      window.removeEventListener('resize', changeColumnCount)
    }
  }, [])

  const changeColumnCount = throttle(() => {
    if (window.innerWidth > 2500) {
      changeColumn(5)
    } else if (window.innerWidth > 1800) {
      changeColumn(4)
    } else if (window.innerWidth > 1300) {
      changeColumn(3)
    } else if (window.innerWidth > 900) {
      changeColumn(2)
    } else if (window.innerWidth <= 900) {
      changeColumn(1)
    }
  }, 500)

  const [column, changeColumn] = useState(3)

  const { theme } = useTheme()

  return (
    <div id='wrapper' className={theme}>
      <CommonHead meta={meta}/>
      <div className={`${BLOG.font} flex bg-gray-100 dark:bg-black min-h-screen`}>
        {/* 侧边菜单 */}
        <SideBar tags={tags} currentTag={currentTag} />
        <main className='md:px-24 p-5 flex-grow'>
          {(!page || page === 1) && (
            <div className='py-5' />
          )
          }
          {/* 标签 */}
          {currentTag && (
            <div className='pb-5 dark:text-gray-200'>
              <div className='py-1'>标签: {currentTag}</div>
              <hr />
            </div>
          )}
          {/* 当前搜索 */}
          {(currentSearch || (page && page !== 1)) && (
            <div className='pb-5'>
              <div className='dark:text-gray-200 flex justify-between py-1'>
                {currentSearch && (
                  <span>搜索关键词: {currentSearch}</span>
                )}
                {page && page !== 1 && (
                  <span>页 {page} / {totalPages}</span>
                )}
              </div>
              <hr />
            </div>
          )}

          {/* 文章列表 */}
          <div className='mx-auto'>
            {/* <div className='col-4 grid md:grid-cols-2 grid-cols-1 gap-6'> */}
            <div style={{ columnCount: column }}>
              {!postsToShow.length && (
                <p className='text-gray-500 dark:text-gray-300'>No posts found.</p>
              )}
              {postsToShow.map(post => (
                  <BlogPost key={post.id} post={post} tags={tags} />
              ))}
            </div>
          </div>

          <Pagination page={page} showNext={showNext} />

        </main>
      </div>
    </div>
  )
}
DefaultLayout.propTypes = {
  posts: PropTypes.array.isRequired,
  tags: PropTypes.object.isRequired,
  currentTag: PropTypes.string
}
export default DefaultLayout