git ssb

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var {computed, when, h} = require('mutant')
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var nest = require('depnest')
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var sustained = require('../../../lib/sustained')
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exports.gives = nest('app.html.progressNotifier')
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exports.needs = nest({
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  'progress.html.render': 'first',
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  'progress.obs': {
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    global: 'first',
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    query: 'first',
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    private: 'first'
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  }
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})
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exports.create = function (api) {
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  return nest('app.html.progressNotifier', function (id) {
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    var progress = api.progress.obs.global()
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    var indexing = computed([
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      api.progress.obs.query().pending,
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      api.progress.obs.private().pending
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    ], Math.max)
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    var maxQueryPending = 0
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    var indexProgress = computed(indexing, (pending) => {
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      if (pending === 0 || pending > maxQueryPending) {
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        maxQueryPending = pending
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      }
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      if (pending === 0) {
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        return 1
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      } else {
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        return (maxQueryPending - pending) / maxQueryPending
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      }
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    })
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    var downloadProgress = computed([progress.feeds, progress.incompleteFeeds], (feeds, incomplete) => {
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      if (feeds) {
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        return clamp((feeds - incomplete) / feeds)
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      } else {
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        return 1
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      }
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    })
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    var hidden = sustained(computed([progress.incompleteFeeds, indexing], (incomplete, indexing) => {
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      return incomplete < 5 && !indexing
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    }), 2000)
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    // HACK: css animations take up WAY TO MUCH cpu, remove from dom when inactive
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    var displaying = computed(sustained(hidden, 500, x => !x), hidden => !hidden)
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    return h('div.info', { hidden }, [
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      h('div.status', [
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        when(displaying, h('Loading -small', [
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          when(computed(progress.incompleteFeeds, (v) => v > 5),
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            ['Downloading new messages', h('progress', { style: {'margin-left': '10px'}, min: 0, max: 1, value: downloadProgress })],
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            when(indexing, [
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              ['Indexing database', h('progress', { style: {'margin-left': '10px'}, min: 0, max: 1, value: indexProgress })]
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            ], 'Scuttling...')
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          )
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        ]))
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      ])
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    ])
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  })
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}
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function clamp (value) {
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  return Math.min(1, Math.max(0, value)) || 0
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}
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