git ssb

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const h = require('mutant/h')
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const Value = require('mutant/value')
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const when = require('mutant/when')
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const nest = require('depnest')
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exports.needs = nest({
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  'blob.sync.url': 'first',
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  'book.obs.book': 'first',
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  'book.html': {
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    'layout': 'first'
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  },
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  'feed.html.render': 'first',
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  'keys.sync.load': 'first',
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  'about.html.link': 'first',
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  'message.html': {
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    decorate: 'reduce',
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    link: 'first',
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    markdown: 'first'
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  }
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})
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exports.gives = nest({
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  'message.html': ['render'],
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  'book.html': ['render']
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})
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exports.create = function (api) {
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  return nest({
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    'message.html.render': renderBook,
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    'book.html.render': renderBook
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  })
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  function renderBook (msg, { pageId } = {}) {
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    if (!msg.value || (msg.value.content.type !== 'bookclub')) return
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    const isEditing = Value(false)
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    const isCard = Value(true)
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    if (pageId === msg.key) isCard.set(false)
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    const obs = api.book.obs.book(msg.key)
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    const element = h('div', {attributes: {tabindex: '0'}},
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      when(isCard,
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        api.book.html.layout(msg, {layout: 'card', isEditing, isCard, obs}),
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        api.book.html.layout(msg, {layout: 'detail', isEditing, isCard, obs})
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    ))
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    return api.message.html.decorate(element, { msg })
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  }
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}
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