import type { Author } from '../../../graphql/types.gen'
import { Userpic } from '../Userpic'
import { Icon } from '../../_shared/Icon'
import styles from './AuthorCard.module.scss'
import { createEffect, createMemo, createSignal, For, Match, Show, Switch } from 'solid-js'
import { translit } from '../../../utils/ru2en'
import { follow, unfollow } from '../../../stores/zine/common'
import { clsx } from 'clsx'
import { useSession } from '../../../context/session'
import { ShowOnlyOnClient } from '../../_shared/ShowOnlyOnClient'
import { FollowingEntity, Topic } from '../../../graphql/types.gen'
import { router, useRouter } from '../../../stores/router'
import { openPage, redirectPage } from '@nanostores/router'
import { useLocalize } from '../../../context/localize'
import { ConditionalWrapper } from '../../_shared/ConditionalWrapper'
import { Modal } from '../../Nav/Modal'
import { SubscriptionFilter } from '../../../pages/types'
import { isAuthor } from '../../../utils/isAuthor'
import { AuthorBadge } from '../AuthorBadge'
import { TopicBadge } from '../../Topic/TopicBadge'
import { Button } from '../../_shared/Button'
import { getShareUrl, SharePopup } from '../../Article/SharePopup'
import stylesHeader from '../../Nav/Header/Header.module.scss'

type Props = {
  caption?: string
  hideWriteButton?: boolean
  hideDescription?: boolean
  hideFollow?: boolean
  hasLink?: boolean
  subscribed?: boolean
  author: Author
  isAuthorPage?: boolean
  noSocialButtons?: boolean
  isAuthorsList?: boolean
  truncateBio?: boolean
  liteButtons?: boolean
  isTextButton?: boolean
  isComments?: boolean
  isFeedMode?: boolean
  isNowrap?: boolean
  class?: string
  followers?: Author[]
  following?: Array<Author | Topic>
  showPublicationsCounter?: boolean
  hideBio?: boolean
  isCurrentUser?: boolean
}

export const AuthorCard = (props: Props) => {
  const { t, lang } = useLocalize()
  const {
    session,
    isSessionLoaded,
    actions: { loadSession, requireAuthentication }
  } = useSession()

  const [isSubscribing, setIsSubscribing] = createSignal(false)
  const [following, setFollowing] = createSignal<Array<Author | Topic>>(props.following)
  const [subscriptionFilter, setSubscriptionFilter] = createSignal<SubscriptionFilter>('all')
  const [userpicUrl, setUserpicUrl] = createSignal<string>()

  const subscribed = createMemo<boolean>(() => {
    return session()?.news?.authors?.some((u) => u === props.author.slug) || false
  })

  const subscribe = async (really = true) => {
    setIsSubscribing(true)

    await (really
      ? follow({ what: FollowingEntity.Author, slug: props.author.slug })
      : unfollow({ what: FollowingEntity.Author, slug: props.author.slug }))

    await loadSession()
    setIsSubscribing(false)
  }

  const canFollow = createMemo(() => !props.hideFollow && session()?.user?.slug !== props.author.slug)

  const name = createMemo(() => {
    if (lang() !== 'ru') {
      if (props.author.name === 'Дискурс') {
        return 'Discours'
      }

      return translit(props.author.name)
    }

    return props.author.name
  })

  // TODO: reimplement AuthorCard
  const { changeSearchParam } = useRouter()
  const initChat = () => {
    requireAuthentication(() => {
      openPage(router, `inbox`)
      changeSearchParam({
        initChat: props.author.id.toString()
      })
    }, 'discussions')
  }

  const handleSubscribe = () => {
    requireAuthentication(() => {
      subscribe(true)
    }, 'subscribe')
  }

  createEffect(() => {
    if (props.following) {
      if (subscriptionFilter() === 'users') {
        setFollowing(props.following.filter((s) => 'name' in s))
      } else if (subscriptionFilter() === 'topics') {
        setFollowing(props.following.filter((s) => 'title' in s))
      } else {
        setFollowing(props.following)
      }
    }
  })

  if (props.isAuthorPage && props.author.userpic?.includes('assets.discours.io')) {
    setUserpicUrl(props.author.userpic.replace('100x', '500x500'))
  }
  return (
    <div
      class={clsx(styles.author, props.class)}
      classList={{
        ['row']: props.isAuthorPage,
        [styles.authorPage]: props.isAuthorPage,
        [styles.authorComments]: props.isComments,
        [styles.authorsListItem]: props.isAuthorsList,
        [styles.feedMode]: props.isFeedMode,
        [styles.nowrapView]: props.isNowrap
      }}
    >
      <Show
        when={props.isAuthorPage}
        fallback={
          <Userpic
            name={props.author.name}
            userpic={props.author.userpic}
            hasLink={props.hasLink}
            isBig={props.isAuthorPage}
            isAuthorsList={props.isAuthorsList}
            isFeedMode={props.isFeedMode}
            slug={props.author.slug}
            class={styles.circlewrap}
          />
        }
      >
        <div class="col-md-5">
          <Userpic
            name={props.author.name}
            userpic={userpicUrl()}
            hasLink={props.hasLink}
            isBig={props.isAuthorPage}
            isAuthorsList={props.isAuthorsList}
            isFeedMode={props.isFeedMode}
            slug={props.author.slug}
            class={styles.circlewrap}
          />
        </div>
      </Show>

      <div
        class={styles.authorDetails}
        classList={{
          'col-md-15 col-xl-13': props.isAuthorPage,
          [styles.authorDetailsShrinked]: props.isAuthorPage
        }}
      >
        <div class={styles.authorDetailsWrapper}>
          <div class={styles.authorNameContainer}>
            <ConditionalWrapper
              condition={props.hasLink}
              wrapper={(children) => (
                <a class={styles.authorName} href={`/author/${props.author.slug}`}>
                  {children}
                </a>
              )}
            >
              <span class={clsx({ [styles.authorName]: !props.hasLink })}>{name()}</span>
            </ConditionalWrapper>
          </div>
          <Show
            when={props.author.bio && !props.hideBio}
            fallback={
              props.showPublicationsCounter ? (
                <div class={styles.authorAbout}>
                  {t('PublicationsWithCount', { count: props.author.stat?.shouts ?? 0 })}
                </div>
              ) : (
                ''
              )
            }
          >
            <div
              class={styles.authorAbout}
              classList={{ 'text-truncate': props.truncateBio }}
              innerHTML={props.author.bio}
            />
          </Show>

          <Show
            when={
              (props.followers && props.followers.length > 0) ||
              (props.following && props.following.length > 0)
            }
          >
            <div class={styles.subscribersContainer}>
              <Show when={props.followers && props.followers.length > 0}>
                <a href="?modal=followers" class={styles.subscribers}>
                  <For each={props.followers.slice(0, 3)}>
                    {(f) => <Userpic name={f.name} userpic={f.userpic} class={styles.userpic} />}
                  </For>
                  <div class={styles.subscribersCounter}>
                    {t('SubscriberWithCount', { count: props.followers.length })}
                  </div>
                </a>
              </Show>

              <Show when={props.following && props.following.length > 0}>
                <a href="?modal=following" class={styles.subscribers}>
                  <For each={props.following.slice(0, 3)}>
                    {(f) => {
                      if ('name' in f) {
                        return <Userpic name={f.name} userpic={f.userpic} class={styles.userpic} />
                      } else if ('title' in f) {
                        return <Userpic name={f.title} userpic={f.pic} class={styles.userpic} />
                      }
                      return null
                    }}
                  </For>
                  <div class={styles.subscribersCounter}>
                    {t('SubscriptionWithCount', { count: props?.following.length ?? 0 })}
                  </div>
                </a>
              </Show>
            </div>
          </Show>
        </div>
        <ShowOnlyOnClient>
          <Show when={isSessionLoaded()}>
            <Show when={props.author.links && props.author.links.length > 0}>
              <div class={styles.authorSubscribeSocial}>
                <For each={props.author.links}>
                  {(link) => (
                    <a
                      class={styles.socialLink}
                      href={link.startsWith('http') ? link : `https://${link}`}
                      target="_blank"
                      rel="nofollow noopener"
                    >
                      <span class={styles.authorSubscribeSocialLabel}>
                        {link.startsWith('http') ? link : `https://${link}`}
                      </span>
                    </a>
                  )}
                </For>
              </div>
            </Show>
            <Show when={canFollow()}>
              <div class={styles.authorSubscribe}>
                <Show
                  when={subscribed()}
                  fallback={
                    <button
                      onClick={handleSubscribe}
                      class={clsx('button', styles.button)}
                      classList={{
                        [styles.buttonSubscribe]: !props.isAuthorsList && !props.isTextButton,
                        'button--subscribe': !props.isAuthorsList,
                        'button--subscribe-topic': props.isAuthorsList || props.isTextButton,
                        [styles.buttonWrite]: props.isAuthorsList || props.isTextButton,
                        [styles.isSubscribing]: isSubscribing()
                      }}
                      disabled={isSubscribing()}
                    >
                      <Show when={!props.isAuthorsList && !props.isTextButton && !props.isAuthorPage}>
                        <Icon name="author-subscribe" class={styles.icon} />
                      </Show>
                      <Show when={props.isTextButton || props.isAuthorPage}>
                        <span class={clsx(styles.buttonLabel, styles.buttonLabelVisible)}>
                          {t('Follow')}
                        </span>
                      </Show>
                    </button>
                  }
                >
                  <button
                    onClick={() => subscribe(false)}
                    class={clsx('button', styles.button)}
                    classList={{
                      [styles.buttonSubscribe]: !props.isAuthorsList && !props.isTextButton,
                      'button--subscribe': !props.isAuthorsList,
                      'button--subscribe-topic': props.isAuthorsList || props.isTextButton,
                      [styles.buttonWrite]: props.isAuthorsList || props.isTextButton,
                      [styles.isSubscribing]: isSubscribing()
                    }}
                    disabled={isSubscribing()}
                  >
                    <Show when={!props.isAuthorsList && !props.isTextButton && !props.isAuthorPage}>
                      <Icon name="author-unsubscribe" class={styles.icon} />
                    </Show>
                    <Show when={props.isTextButton || props.isAuthorPage}>
                      <span
                        class={clsx(
                          styles.buttonLabel,
                          styles.buttonLabelVisible,
                          styles.buttonUnfollowLabel
                        )}
                      >
                        {t('Unfollow')}
                      </span>
                      <span
                        class={clsx(
                          styles.buttonLabel,
                          styles.buttonLabelVisible,
                          styles.buttonSubscribedLabel
                        )}
                      >
                        {t('Following')}
                      </span>
                    </Show>
                  </button>
                </Show>

                <Show when={!props.hideWriteButton}>
                  <button
                    class={styles.button}
                    classList={{
                      'button--light': !props.isAuthorsList,
                      'button--subscribe-topic': props.isAuthorsList,
                      [styles.buttonWrite]: props.liteButtons && props.isAuthorsList
                    }}
                    onClick={initChat}
                  >
                    <Show when={!props.isTextButton && !props.isAuthorPage}>
                      <Icon name="comment" class={styles.icon} />
                    </Show>
                    <Show when={!props.liteButtons || props.isTextButton}>{t('Message')}</Show>
                  </button>
                </Show>
              </div>
            </Show>

            <Show when={props.isCurrentUser}>
              <div class={styles.authorSubscribe}>
                <Button
                  variant="secondary"
                  onClick={() => redirectPage(router, 'profileSettings')}
                  value={t('Edit profile')}
                  class={styles.button}
                />

                <SharePopup
                  containerCssClass={styles.shareControl}
                  title={props.author.name}
                  description={props.author.bio}
                  imageUrl={props.author.userpic}
                  shareUrl={getShareUrl({ pathname: `/author/${props.author.slug}` })}
                  trigger={<Button variant="secondary" value={t('Share')} />}
                />
              </div>
            </Show>
          </Show>
        </ShowOnlyOnClient>
        <Show when={props.followers}>
          <Modal variant="medium" name="followers" maxHeight>
            <>
              <h2>{t('Followers')}</h2>
              <div class={styles.listWrapper}>
                <div class="row">
                  <div class="col-24">
                    <For each={props.followers}>
                      {(follower: Author) => <AuthorBadge author={follower} />}
                    </For>
                  </div>
                </div>
              </div>
            </>
          </Modal>
        </Show>
        <Show when={props.following}>
          <Modal variant="medium" name="following" maxHeight>
            <>
              <h2>{t('Subscriptions')}</h2>
              <ul class="view-switcher">
                <li class={clsx({ 'view-switcher__item--selected': subscriptionFilter() === 'all' })}>
                  <button type="button" onClick={() => setSubscriptionFilter('all')}>
                    {t('All')}
                  </button>
                  <span class="view-switcher__counter">{props.following.length}</span>
                </li>
                <li class={clsx({ 'view-switcher__item--selected': subscriptionFilter() === 'users' })}>
                  <button type="button" onClick={() => setSubscriptionFilter('users')}>
                    {t('Users')}
                  </button>
                  <span class="view-switcher__counter">
                    {props.following.filter((s) => 'name' in s).length}
                  </span>
                </li>
                <li class={clsx({ 'view-switcher__item--selected': subscriptionFilter() === 'topics' })}>
                  <button type="button" onClick={() => setSubscriptionFilter('topics')}>
                    {t('Topics')}
                  </button>
                  <span class="view-switcher__counter">
                    {props.following.filter((s) => 'title' in s).length}
                  </span>
                </li>
              </ul>
              <br />
              <div class={styles.listWrapper}>
                <div class="row">
                  <div class="col-24">
                    <For each={following()}>
                      {(subscription) =>
                        isAuthor(subscription) ? (
                          <AuthorBadge author={subscription} />
                        ) : (
                          <TopicBadge topic={subscription} />
                        )
                      }
                    </For>
                  </div>
                </div>
              </div>
            </>
          </Modal>
        </Show>
      </div>
    </div>
  )
}