const m = require('mithril')
const Article = require('./article')
const api = require('./api')
const media = require('./media')

window.LoadComments = false
window.HyvorLoaded = false
window.HYVOR_TALK_WEBSITE = 7544

const SiteArticle = {
  oninit: function(vnode) {
    this.error = ''
    this.loading = false
    this.showLoading = null
    this.data = {
      article: null,
      files: [],
    }
    this.showcomments = false

    if (window.__nfpdata) {
      this.path = m.route.param('id')
      this.data.article = window.__nfpdata
      window.__nfpdata = null
    } else {
      this.fetchArticle(vnode)
    }
  },

  onbeforeupdate: function(vnode) {
    if (this.path !== m.route.param('id')) {
      this.fetchArticle(vnode)
    }
  },

  fetchArticle: function(vnode) {
    this.error = ''
    this.path = m.route.param('id')
    this.showcomments = false

    if (this.showLoading) {
      clearTimeout(this.showLoading)
    }

    if (this.data.article) {
      this.showLoading = setTimeout(() => {
        this.showLoading = null
        this.loading = true
        m.redraw()
      }, 150)
    } else {
      this.loading = true
    }

    api.sendRequest({
      method: 'GET',
      url: '/api/articles/' + this.path,
    })
    .then((result) => {
      this.data = result

      if (this.data.article.media_alt_prefix) {
        this.data.article.pictureFallback = this.data.article.media_alt_prefix + '_small.jpg'
        this.data.article.pictureJpeg = this.data.article.media_alt_prefix + '_small.jpg' + ' 720w, '
                        + this.data.article.media_alt_prefix + '_medium.jpg' + ' 1300w, '
                        + this.data.article.media_alt_prefix + '_large.jpg  1920w'
        this.data.article.pictureAvif = this.data.article.media_alt_prefix + '_small.avif' + ' 720w, '
                        + this.data.article.media_alt_prefix + '_medium.avif' + ' 1300w, '
                        + this.data.article.media_alt_prefix + '_large.avif 1920w'
  
        this.data.article.pictureCover = '(max-width: 840px) calc(100vw - 82px), '
                        + '758px'
      } else {
        this.data.article.pictureFallback = null
        this.data.article.pictureJpeg = null
        this.data.article.pictureAvif = null
        this.data.article.pictureCover = null
      }

      if (!this.data.article) {
        this.error = 'Article not found'
      }
    }, (err) => {
      this.error = err.message
    })
    .then(() => {
      clearTimeout(this.showLoading)
      this.showLoading = null
      this.loading = false
      m.redraw()
    })
  },

  view: function(vnode) {
    let article = this.data.article
    let banner = media.getBannerImage(article, '/article/')

    return [
      this.loading
        ? m('div.loading-spinner')
        : null,
      !this.loading && this.error
        ? m('div.wrapper', m('div.error', {
            onclick: () => {
              this.error = ''
              this.fetchPage(vnode)
            },
          }, 'Page error: ' + this.error + '. Click here to try again'))
        : null,
      /*(banner
        ? m('a.page-banner', {
            href: banner.original,
            target: '_blank',
            style: { 'background-image': 'url("' + banner.banner + '")' },
          },
        )
        : null),*/
      (article
        ? m('.inside.vertical', [
            m('div.page-goback', ['« ', m(m.route.Link, {
              href: article.page_path
                ? '/page/' + article.page_path
                : '/'
              }, article.page_name || 'Home')]
            ),
            article ? m(Article, { full: true, files: this.data.files, article: article }) : null,
            window.LoadComments
              ? m('div#hyvor-talk-view', { oncreate: function() {
                  window.HYVOR_TALK_CONFIG = {
                    url: false,
                    id: article.path,
                    loadMode: scroll,
                  }
                  if (!window.HyvorLoaded) {
                    window.HyvorLoaded = true
                    var s = document.createElement('script')
                    s.src = 'https://talk.hyvor.com/web-api/embed.js';
                    s.type = 'text/javascript'
                    // s.setAttribute('crossorigin', '')
                    // s.setAttribute('data-timestamp', +new Date());
                    document.body.appendChild(s);
                  } else {
                    hyvor_talk.reload()
                  }
                }}, m('div.loading-spinner'))
            : m('button', {
                onclick: function() { window.LoadComments = true },
              }, 'Open comment discussion'),
          ])
        : null),
    ]
  },
}

module.exports = SiteArticle