git ssb

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var h = require('mutant/h')
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var nest = require('depnest')
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var extend = require('xtend')
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var ref = require('ssb-ref')
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exports.needs = nest({
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  'message.html': {
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    decorate: 'reduce',
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    layout: 'first'
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  },
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  'about.obs.latestValue': 'first'
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})
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exports.gives = nest('message.html', {
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  canRender: true,
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  render: true
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})
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exports.create = function(api) {
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  return nest('message.html', {
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    canRender: function(msg) {
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      return isRenderable(msg)
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    },
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    render: function about(msg, opts) {
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      if (!isRenderable(msg)) return
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      var action = msg.value.content.attendee.remove ? `can't attend` : 'is attending'
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      var target = msg.value.content.about
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      var title = api.about.obs.latestValue(target, 'title')
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      var element = api.message.html.layout(msg, extend({
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        showActions: true,
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        miniContent: [action, ' ', h('a', {
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          href: target
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        }, title)],
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        layout: 'mini'
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      }, opts))
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      return api.message.html.decorate(element, {
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        msg
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      })
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    }
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  })
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  function isRenderable(msg) {
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    if (msg.value.content.type !== 'about') return false
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    else if (!ref.isMsg(msg.value.content.about)) return false
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    else if (!msg.value.content.attendee) return false
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    else if (msg.value.content.attendee.link !== msg.value.author) return false
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    else return true
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  }
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}
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