git ssb

1
const nest = require('depnest')
2
const pull = require('pull-stream')
3
const pullMerge = require('pull-merge')
4
const Scroller = require('pull-scroll')
5
const { h } = require('mutant')
6
7
exports.gives = nest('app.page.channels')
8
9
exports.needs = nest({
10
  'app.html.filter': 'first',
11
  'app.html.scroller': 'first',
12
  'feed.pull.channel': 'first',
13
  'message.html.compose': 'first',
14
  'message.html.render': 'first',
15
  'sbot.async.publish': 'first'
16
})
17
18
exports.create = function (api) {
19
  return nest('app.page.channels', channelView)
20
21
  function channelView (location) {
22
    const { channels } = location
23
    if (!Array.isArray(channels)) return
24
25
    const channelNames = channels.map(c => c.substr(1))
26
27
    const { filterMenu, filterDownThrough, filterUpThrough, resetFeed } = api.app.html.filter(draw)
28
    const { container, content } = api.app.html.scroller({ prepend: [filterMenu] })
29
30
    function draw () {
31
      resetFeed({ container, content })
32
33
      const Source = (opts) => pull(
34
        pullMerge(
35
          channelNames.map(name => api.feed.pull.channel(name)(opts)),
36
          (a, b) => {
37
            if (opts.reverse) return (a.value.timestamp > b.value.timestamp) ? -1 : +1
38
            else return (a.value.timestamp < b.value.timestamp) ? -1 : +1
39
          }
40
        ),
41
        pull.unique(m => m.key)
42
      )
43
44
      pull(
45
        Source({ old: false }),
46
        filterUpThrough(),
47
        Scroller(container, content, render, true, false)
48
      )
49
50
      pull(
51
        Source({ reverse: true }),
52
        filterDownThrough(),
53
        Scroller(container, content, render, false, false)
54
      )
55
    }
56
    draw()
57
58
    // TODO rollups
59
    function render (msg) {
60
      return api.message.html.render(msg, { showTitle: true })
61
    }
62
63
    var page = h('Page -channels', { title: channels.join(' + ') }, [
64
      // filterMenu, // TODO - extract non-scroller els like filterMenu here
65
      container
66
    ])
67
68
    // TODO better scroll hack for keyboard shortcuts
69
    page.keyboardScroll = container.keyboardScroll
70
71
    return page
72
  }
73
}
74