import { createMemo, For, onMount, Show } from 'solid-js'
import Banner from '../Discours/Banner'
import { NavTopics } from '../Nav/Topics'
import { Row5 } from '../Feed/Row5'
import Row3 from '../Feed/Row3'
import Row2 from '../Feed/Row2'
import Row1 from '../Feed/Row1'
import Hero from '../Discours/Hero'
import Beside from '../Feed/Beside'
import RowShort from '../Feed/RowShort'
import Slider from '../Feed/Slider'
import Group from '../Feed/Group'
import { getLogger } from '../../utils/logger'
import type { Shout, Topic } from '../../graphql/types.gen'
import { Icon } from '../Nav/Icon'
import { t } from '../../utils/intl'
import { useTopicsStore } from '../../stores/zine/topics'
import {
  loadPublishedArticles,
  loadTopArticles,
  loadTopMonthArticles,
  useArticlesStore
} from '../../stores/zine/articles'
import { useTopAuthorsStore } from '../../stores/zine/topAuthors'
import { locale } from '../../stores/ui'

const log = getLogger('home view')

type HomeProps = {
  randomTopics: Topic[]
  recentPublishedArticles: Shout[]
}

const CLIENT_LOAD_ARTICLES_COUNT = 30
const LOAD_MORE_ARTICLES_COUNT = 30

export const HomeView = (props: HomeProps) => {
  const {
    getSortedArticles,
    getTopArticles,
    getTopMonthArticles,
    getTopViewedArticles,
    getTopCommentedArticles,
    getArticlesByLayout
  } = useArticlesStore({
    sortedArticles: props.recentPublishedArticles
  })
  const { getRandomTopics, getTopTopics } = useTopicsStore({
    randomTopics: props.randomTopics
  })

  const { getTopAuthors } = useTopAuthorsStore()

  onMount(() => {
    loadTopArticles()
    loadTopMonthArticles()
    loadPublishedArticles({ limit: CLIENT_LOAD_ARTICLES_COUNT, offset: getSortedArticles().length })
  })

  const randomLayout = createMemo(() => {
    const articlesByLayout = getArticlesByLayout()
    const filledLayouts = Object.keys(articlesByLayout).filter(
      // FIXME: is 7 ok? or more complex logic needed?
      (layout) => articlesByLayout[layout].length > 7
    )

    const randomLayout =
      filledLayouts.length > 0 ? filledLayouts[Math.floor(Math.random() * filledLayouts.length)] : ''

    return (
      <Show when={Boolean(randomLayout)}>
        <Group
          articles={articlesByLayout[randomLayout]}
          header={
            <div class="layout-icon">
              <Icon name={randomLayout} />
            </div>
          }
        />
      </Show>
    )
  })

  const loadMore = () => {
    loadPublishedArticles({ limit: LOAD_MORE_ARTICLES_COUNT, offset: getSortedArticles().length })
  }

  return (
    <Show when={locale()}>
      <NavTopics topics={getRandomTopics()} />

      <Row5 articles={getSortedArticles().slice(0, 5)} />

      <Hero />

      <Beside
        beside={getSortedArticles().slice(4, 5)[0]}
        title={t('Top viewed')}
        values={getTopViewedArticles().slice(0, 5)}
        wrapper={'top-article'}
      />

      <Row3 articles={getSortedArticles().slice(6, 9)} />

      {/*FIXME: ?*/}
      <Show when={getTopAuthors().length === 5}>
        <Beside
          beside={getSortedArticles().slice(8, 9)[0]}
          title={t('Top authors')}
          values={getTopAuthors()}
          wrapper={'author'}
        />
      </Show>

      <Slider title={t('Top month articles')} articles={getTopMonthArticles()} />

      <Row2 articles={getSortedArticles().slice(10, 12)} />

      <RowShort articles={getSortedArticles().slice(12, 16)} />

      <Row1 article={getSortedArticles().slice(15, 16)[0]} />
      <Row3 articles={getSortedArticles().slice(17, 20)} />
      <Row3 articles={getTopCommentedArticles()} header={<h2>{t('Top commented')}</h2>} />

      {randomLayout()}

      <Slider title={t('Favorite')} articles={getTopArticles()} />

      <Beside
        beside={getSortedArticles().slice(19, 20)[0]}
        title={t('Top topics')}
        values={getTopTopics().slice(0, 5)}
        wrapper={'topic'}
        isTopicCompact={true}
      />

      <Row3 articles={getSortedArticles().slice(21, 24)} />

      <Banner />

      <Row2 articles={getSortedArticles().slice(24, 26)} />
      <Row3 articles={getSortedArticles().slice(26, 29)} />
      <Row2 articles={getSortedArticles().slice(29, 31)} />
      <Row3 articles={getSortedArticles().slice(31, 34)} />

      <For each={getSortedArticles().slice(35)}>{(article) => <Row1 article={article} />}</For>

      <p class="load-more-container">
        <button class="button" onClick={loadMore}>
          {t('Load more')}
        </button>
      </p>
    </Show>
  )
}