git ssb

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var { h } = require('mutant')
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var nest = require('depnest')
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exports.needs = nest({
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  'feed.pull.type': 'first',
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  'feed.html.rollup': 'first',
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  'feed.pull.public': 'first',
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  'gathering.sheet.edit': 'first',
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  'keys.sync.id': 'first',
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  'contact.obs.following': 'first',
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  'sbot.pull.stream': 'first'
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})
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exports.gives = nest('page.html.render')
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exports.create = function (api) {
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  return nest('page.html.render', function channel (path) {
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    if (path !== '/gatherings') return
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    var id = api.keys.sync.id()
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    var following = api.contact.obs.following(id)
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    var prepend = [
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      h('PageHeading', [
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        h('h1', [h('strong', 'Gatherings'), ' from your extended network']),
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        h('div.meta', [
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          h('button -add', {
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            'ev-click': createGathering
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          }, '+ Add Gathering')
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        ])
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      ])
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    ]
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    return api.feed.html.rollup(api.feed.pull.type('gathering'), {
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      prepend,
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      bumpFilter: function (msg) {
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        if (msg.value && msg.value.content && typeof msg.value.content === 'object') {
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          var author = msg.value.author
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          return id === author || following().includes(author)
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        }
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      },
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      rootFilter: (msg) => msg.value.content.type === 'gathering',
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      updateStream: api.sbot.pull.stream(sbot => sbot.patchwork.latest({ids: [id]}))
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    })
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  })
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  function createGathering () {
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    api.gathering.sheet.edit()
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  }
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}
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