git ssb

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const nest = require('depnest')
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const { h, Value, computed, map, when, resolve } = require('mutant')
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const pull = require('pull-stream')
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exports.gives = nest('app.page.blogSearch')
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exports.needs = nest({
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  'app.html.sideNav': 'first',
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  'app.html.blogCard': 'first',
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  'app.html.topNav': 'first',
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  'app.html.scroller': 'first',
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  'channel.obs.recent': 'first',
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  'feed.pull.channel': 'first',
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  'feed.pull.public': 'first',
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  'history.sync.push': 'first',
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  'keys.sync.id': 'first',
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  'message.html.channel': 'first',
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  'translations.sync.strings': 'first',
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  'unread.sync.isUnread': 'first'
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})
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exports.create = (api) => {
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  return nest('app.page.blogSearch', blogSearch)
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  function blogSearch (location) {
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    // location here can expected to be: { page: 'blogSearch'}
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    // OR { page: 'blogSearch', channel: 'scuttlebutt', searchVal: 'scutt'}
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    var strings = api.translations.sync.strings()
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    var searchVal = Value(resolve(location.searchVal) || resolve(location.channel) || '')
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    var searchResults = computed([api.channel.obs.recent(), searchVal],  (channels, val) => {
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      if (val.length < 2) return []
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      return channels.filter(c => c.toLowerCase().indexOf(val.toLowerCase()) > -1)
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    })
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    var searchField = h('div.search', [
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      h('div.input', [
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        h('i.fa.fa-search'),
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        h('input', { 
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          'ev-input': e => searchVal.set(e.target.value),
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          value: searchVal 
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        })
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      ]),
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      when(searchResults, 
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        h('div.results', map(searchResults, channel => { 
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          const classList = channel === location.channel
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            ? ['-channelActive']
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            : ''
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          const newLocation = {
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            page: 'blogSearch',
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            channel,
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            searchVal
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          }
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          return api.message.html.channel(channel, { classList, location: newLocation })
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        }))
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      )
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    ])
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    var createStream = api.feed.pull.public
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    if (location.channel) {
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      createStream = api.feed.pull.channel(location.channel)
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    }
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    var blogs = api.app.html.scroller({
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      classList: ['content'],
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      prepend: [
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        api.app.html.topNav(location),
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        searchField
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      ],
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      stream: createStream,
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      filter: () => pull(
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        pull.filter(msg => {
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          const type = msg.value.content.type
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          return type === 'post' || type === 'blog'
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        }),
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        pull.filter(msg => !msg.value.content.root) // show only root messages
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      ),
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      // FUTURE : if we need better perf, we can add a persistent cache. At the moment this page is fast enough though.
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      // See implementation of app.html.sideNav for example
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      // store: recentMsgCache,
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      // updateTop: updateRecentMsgCache,
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      // updateBottom: updateRecentMsgCache,
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      render
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    })
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    return h('Page -blogSearch', {title: strings.home}, [
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      api.app.html.sideNav(location),
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      blogs
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    ])
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  }
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  function render (blog) {
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    const { recps, channel } = blog.value.content
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    var onClick
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    if (channel && !recps)
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      onClick = (ev) => api.history.sync.push(Object.assign({}, blog, { page: 'blogShow' }))
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    return api.app.html.blogCard(blog, { onClick })
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  }
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}
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