git ssb

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var nest = require('depnest')
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var { h, computed, map, send } = require('mutant')
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exports.gives = nest('message.html.meta')
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exports.needs = nest({
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  'message.obs.likes': 'first',
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  'sheet.profiles': 'first',
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  'about.obs.name': 'first',
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  'intl.sync.i18n': 'first'
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})
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exports.create = function (api) {
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  const i18n = api.intl.sync.i18n
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  return nest('message.html.meta', function likes (msg) {
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    if (msg.key) {
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      return computed(api.message.obs.likes(msg.key), likeCount)
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    }
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  })
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  function likeCount (likes) {
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    if (likes.length) {
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      return [' ', h('a.likes', {
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        title: nameList(i18n('Liked by'), likes),
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        href: '#',
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        'ev-click': send(displayLikes, likes)
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      }, [`${likes.length} ${likes.length === 1 ? i18n('like') : i18n('likes')}`])]
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    }
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  }
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  function nameList (prefix, ids) {
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    var items = map(ids, api.about.obs.name)
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    return computed([prefix, items], (prefix, names) => {
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      return (prefix ? (prefix + '\n') : '') + names.map((n) => `- ${n}`).join('\n')
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    })
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  }
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  function displayLikes (likes) {
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    api.sheet.profiles(likes, i18n('Liked by'))
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  }
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}
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