git ssb

1
const nest = require('depnest')
2
const { computed, Value } = require('mutant')
3
const { title } = require('markdown-summary')
4
const { isMsg } = require('ssb-ref')
5
6
exports.gives = nest('message.html.subject')
7
8
exports.needs = nest({
9
  'message.html.markdown': 'first',
10
  'message.sync.unbox': 'first',
11
  'sbot.async.get': 'first'
12
})
13
14
exports.create = function (api) {
15
  var subjectCache = {}
16
17
  return nest('message.html.subject', subject)
18
19
  function subject(msg) {
20
    if (msg === undefined) debugger
21
    // test if it's a message ref, or a full message object
22
    // a message ref is generally passed in if we're fetching the subject of a root message
23
    if (isMsg(msg)) {
24
      if (subjectCache[msg]) return subjectCache[msg]
25
26
      var subject = Value()
27
28
      api.sbot.async.get(msg, (err, value) => {
29
        if (err) throw err
30
        try {
31
          var _subject = getMsgSubject({ key: msg, value: api.message.sync.unbox(value) })
32
          subject.set(_subject)
33
          subjectCache[msg] = _subject
34
        } catch (n) {
35
          subject.set("broken message")
36
        }
37
38
      })
39
40
      return subject
41
    } else { return getMsgSubject(msg) }
42
  }
43
44
  function getMsgSubject(msg) {
45
    const { subject, text } = msg.value.content
46
    if (!(subject || text)) return
47
48
    return subject
49
      ? api.message.html.markdown(subject)
50
      : api.message.html.markdown(title(text))
51
  }
52
}
53