git ssb

1
const nest = require('depnest')
2
const { h } = require('mutant')
3
const isString = require('lodash/isString')
4
const More = require('hypermore')
5
const morphdom = require('morphdom')
6
const Debounce = require('obv-debounce')
7
8
exports.gives = nest('app.page.home')
9
10
exports.needs = nest({
11
  'history.sync.push': 'first',
12
  'keys.sync.id': 'first',
13
  'translations.sync.strings': 'first',
14
  'state.obs.threads': 'first',
15
  'app.html.threadCard': 'first',
16
  'unread.sync.isUnread': 'first'
17
})
18
19
// function toRecpGroup(msg) {
20
//   //cannocialize
21
//   return Array.isArray(msg.value.content.repcs) &&
22
//     msg.value.content.recps.map(function (e) {
23
//     return (isString(e) ? e : e.link)
24
//   }).sort().map(function (id) {
25
//     return id.substring(0, 10)
26
//   }).join(',')
27
// }
28
29
exports.create = (api) => {
30
  return nest('app.page.home', function (location) {
31
    // location here can expected to be: { page: 'home'}
32
    var strings = api.translations.sync.strings()
33
34
35
    // function filterForThread (thread) {
36
    //   if(thread.value.private)
37
    //     return {private: toRecpGroup(thread)}
38
    //   else if(thread.value.content.channel)
39
    //     return {channel: thread.value.content.channel}
40
    // }
41
42
    // function filter (rule, thread) {
43
    //   if(!thread.value) return false
44
    //   if(!rule) return true
45
    //   if(rule.channel) {
46
    //     return rule.channel == thread.value.content.channel
47
    //   }
48
    //   else if(rule.group)
49
    //     return rule.group == thread.value.content.group
50
    //   else if(rule.private)
51
    //     return rule.private == toRecpGroup(thread)
52
    //   else return true
53
    // }
54
55
    var morePlease = false
56
    var threadsObs = api.state.obs.threads()
57
58
    // DUCT TAPE: debounce the observable so it doesn't
59
    // update the dom more than 1/second
60
    threadsObs(function () {
61
      if(morePlease) threadsObs.more()
62
    })
63
    threadsObsDebounced = Debounce(threadsObs, 1000)
64
    threadsObsDebounced(function () {
65
      morePlease = false
66
    })
67
    threadsObsDebounced.more = function () {
68
      morePlease = true
69
      requestIdleCallback(threadsObs.more)
70
    }
71
72
    var updates = h('div.threads', [])
73
    var threadsHtmlObs = More(
74
      threadsObsDebounced,
75
      function render (threads) {
76
77
        function latestUpdate(thread) {
78
          var m = thread.timestamp || 0
79
          if(!thread.replies) return m
80
81
          for(var i = 0; i < thread.replies.length; i++)
82
            m = Math.max(thread.replies[i].timestamp||0, m)
83
          return m
84
        }
85
86
        function roots (r) {
87
          return Object.keys(r || {}).map(function (k) {
88
            return threads.roots[r[k]]
89
          }).filter(function (e) {
90
            return e && e.value
91
          })
92
        }
93
94
95
        var groupedThreads = roots(threads.private)
96
          .concat(roots(threads.channels))
97
          .concat(roots(threads.groups))
98
          .filter(function (thread) {
99
            return thread.value.content.recps || thread.value.content.channel
100
          })
101
          .map(function (thread) {
102
            var unread = 0
103
            if(api.unread.sync.isUnread(thread))
104
              unread ++
105
            ;(thread.replies || []).forEach(function (msg) {
106
              if(api.unread.sync.isUnread(msg)) unread ++
107
            })
108
            thread.unread = unread
109
            return thread
110
          })
111
          .sort((a, b) => latestUpdate(b) - latestUpdate(a))
112
113
        morphdom(
114
          updates,
115
          h('div.threads',
116
            groupedThreads.map(thread => {
117
              const { recps, channel } = thread.value.content
118
              var onClick
119
              if (channel && !recps)
120
                onClick = (ev) => api.history.sync.push({ channel })
121
122
              return api.app.html.threadCard(thread, { onClick })
123
            })
124
          )
125
        )
126
127
        return updates
128
      }
129
    )
130
    return h('Page -home', {title: strings.home}, [
131
      h('div.container', [ threadsHtmlObs ]),
132
      h('Button -showMore', { 'ev-click': threadsHtmlObs.more }, strings.showMore)
133
    ])
134
  })
135
}
136
137