git ssb

1
var pull = require('pull-stream')
2
var Cat = require('pull-cat')
3
var sort = require('ssb-sort')
4
var ref = require('ssb-ref')
5
var h = require('hyperscript')
6
var u = require('../util')
7
var Scroller = require('pull-scroll')
8
var self_id = require('../keys').id
9
10
function once (cont) {
11
  var ended = false
12
  return function (abort, cb) {
13
    if(abort) return cb(abort)
14
    else if (ended) return cb(ended)
15
    else
16
      cont(function (err, data) {
17
        if(err) return cb(ended = err)
18
        ended = true
19
        cb(null, data)
20
      })
21
  }
22
}
23
24
exports.needs = {
25
  message_render: 'first',
26
  message_name: 'first',
27
  message_compose: 'first',
28
  message_unbox: 'first',
29
  sbot_get: 'first',
30
  sbot_links: 'first'
31
}
32
33
exports.gives = 'screen_view'
34
35
36
exports.create = function (api) {
37
38
  function getThread (root, cb) {
39
    //in this case, it's inconvienent that panel only takes
40
    //a stream. maybe it would be better to accept an array?
41
42
    api.sbot_get(root, function (err, value) {
43
      if (err) return cb(err)
44
      var msg = {key: root, value: value}
45
  //    if(value.content.root) return getThread(value.content.root, cb)
46
47
      pull(
48
        api.sbot_links({rel: 'root', dest: root, values: true, keys: true}),
49
        pull.collect(function (err, ary) {
50
          if(err) return cb(err)
51
          ary.unshift(msg)
52
          cb(null, ary)
53
        })
54
      )
55
    })
56
57
  }
58
59
  return function (id) {
60
    if(ref.isMsg(id)) {
61
      var meta = {
62
        type: 'post',
63
        root: id,
64
        branch: id //mutated when thread is loaded.
65
      }
66
67
      var content = h('div.column.scroller__content')
68
      var div = h('div.column.scroller',
69
        {style: {'overflow-y': 'auto'}},
70
        h('div.scroller__wrapper',
71
          content,
72
          api.message_compose(meta, {shrink: false, placeholder: 'Write a reply'})
73
        )
74
      )
75
76
      api.message_name(id, function (err, name) {
77
        div.title = name
78
      })
79
80
      pull(
81
        api.sbot_links({
82
          rel: 'root', dest: id, keys: true, old: false
83
        }),
84
        pull.drain(function (msg) {
85
          loadThread() //redraw thread
86
        }, function () {} )
87
      )
88
89
90
      function loadThread () {
91
        getThread(id, function (err, thread) {
92
          //would probably be better keep an id for each message element
93
          //(i.e. message key) and then update it if necessary.
94
          //also, it may have moved (say, if you received a missing message)
95
          content.innerHTML = ''
96
          if(err) return content.appendChild(h('pre', err.stack))
97
98
          //decrypt
99
          thread = thread.map(function (msg) {
100
            return 'string' === typeof msg.value.content ? api.message_unbox(msg) : msg
101
          })
102
103
          if(err) return content.appendChild(h('pre', err.stack))
104
          sort(thread).map(api.message_render).filter(Boolean).forEach(function (el) {
105
            content.appendChild(el)
106
          })
107
108
          var branches = sort.heads(thread)
109
          meta.branch = branches.length > 1 ? branches : branches[0]
110
          meta.root = thread[0].value.content.root || thread[0].key
111
          meta.channel = thread[0].value.content.channel
112
113
          var recps = thread[0].value.content.recps
114
          var priv = thread[0].value['private']
115
          if(priv) {
116
            if(recps)
117
              meta.recps = recps
118
            else
119
              meta.recps = [thread[0].value.author, self_id]
120
          }
121
        })
122
      }
123
124
      loadThread()
125
      return div
126
    }
127
  }
128
}
129