- const { use, lazyload } = theme.comments
- const { repo, repo_id, category_id, light_theme, dark_theme, js, option } = theme.giscus
- const giscusUrl = js || 'https://giscus.app/client.js'
- const giscusOriginUrl = new URL(giscusUrl).origin

script.
  (()=>{
    const getGiscusTheme = theme => theme === 'dark' ? '!{dark_theme}' : '!{light_theme}'

    const loadGiscus = () => {
      const config = Object.assign({
        src: '!{giscusUrl}',
        'data-repo': '!{repo}',
        'data-repo-id': '!{repo_id}',
        'data-category-id': '!{category_id}',
        'data-mapping': 'pathname',
        'data-theme': getGiscusTheme(document.documentElement.getAttribute('data-theme')),
        'data-reactions-enabled': '1',
        crossorigin: 'anonymous',
        async: true
      },!{JSON.stringify(option)})

      const ele = document.createElement('script')
      for (let key in config) {
        ele.setAttribute(key, config[key])
      }
      document.getElementById('giscus-wrap').appendChild(ele)
    }

    const changeGiscusTheme = theme => {
      const iframe = document.querySelector('#giscus-wrap iframe')
      if (iframe) {
        const message = {
          giscus: {
            setConfig: {
              theme: getGiscusTheme(theme)
            }
          }
        }
        iframe.contentWindow.postMessage(message, '!{giscusOriginUrl}')
      }
    }

    btf.addGlobalFn('themeChange', changeGiscusTheme, 'giscus')

    if ('!{use[0]}' === 'Giscus' || !!{lazyload}) {
      if (!{lazyload}) btf.loadComment(document.getElementById('giscus-wrap'), loadGiscus)
      else loadGiscus()
    } else {
      window.loadOtherComment= loadGiscus
    }
  })()