git ssb

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const { h, Value, computed } = require('mutant')
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var nest = require('depnest')
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var extend = require('xtend')
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exports.needs = nest({
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  'about.obs.latestValue': 'first',
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  'sbot.async.get': 'first',
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  'book.html.simpleEmoji': 'first',
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  'message.html': {
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    decorate: 'reduce',
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    layout: 'first',
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    markdown: 'first'
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  }
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})
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exports.gives = nest('message.html.render')
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exports.create = function (api) {
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  return nest('message.html.render', subjective)
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  function subjective(msg, opts) {
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    if (!msg.value || !msg.value.content)
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      return
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    const content = msg.value.content
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    if (content.type == 'about' && content.rating && content.ratingType)
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    {
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      const element = api.message.html.layout(msg, extend({
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        content: renderSubjective(msg),
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        layout: content.review ? 'default' : 'mini'
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      }, opts))
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      return api.message.html.decorate(element, { msg })
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    }
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  }
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  function bookTitle(msg) {
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    const name = Value('')
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    const bookKey = msg.value.content.about
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    api.sbot.async.get(bookKey, (err, msg) => {
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      let originalTitle = msg.content.title
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      let latestTitle = api.about.obs.latestValue(bookKey, 'title')()
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      name.set(latestTitle || originalTitle)
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    })
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    return name
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  }
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  function renderSubjective(msg) {
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    let title = bookTitle(msg)
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    const content = msg.value.content
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    return ['Rated ', h('a', { href: msg.value.content.about }, title),
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            ' ' + content.rating + ' ',
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            content.ratingMax ? ' / ' + content.ratingMax : '',
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            h('span.text', { innerHTML:
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                             computed(content.ratingType,
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                                      api.book.html.simpleEmoji) }),
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            computed(content.review, api.message.html.markdown)
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           ]
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  }
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}
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