git ssb

1
var nest = require('depnest')
2
var { Dict, Set } = require('mutant')
3
4
exports.gives = nest({
5
  'unread.sync.isUnread': true,
6
  'unread.sync.markRead': true,
7
  'unread.obs.userMessages': true
8
})
9
10
//load current state of unread messages.
11
12
exports.create = function (api) {
13
14
  var unread = null
15
  if(localStorage.unread) {
16
    try {
17
      unread = JSON.parse(localStorage.unread)
18
    } catch (err) {}
19
  }
20
  if(!unread)
21
    unread = {timestamp: Date.now()}
22
23
  unread.timestamp = unread.timestamp || Date.now()
24
25
  if(!unread.filter)
26
    unread.filter = {}
27
28
  var timer
29
  function save () {
30
    if(timer) return
31
32
    timer = setTimeout(function () {
33
      timer = null
34
      console.log('save!', Object.keys(unread.filter).length)
35
      localStorage.unread = JSON.stringify(unread)
36
    }, 2e3)
37
  }
38
39
  function isUnread(msg) {
40
    if(msg.timestamp && msg.timestamp < unread.timestamp) return false
41
    return !unread.filter[msg.key]
42
  }
43
44
  function markRead(msg) {
45
    if(msg && 'string' === typeof msg.key) {
46
      //note: there is a quirk where some messages don't have a timestamp
47
      if(isUnread(msg)) {
48
        var userUser 
49
        unread.filter[msg.key] = true
50
        save()
51
        return true
52
      }
53
    }
54
  }
55
56
  function userMessages(feedId) {
57
58
  }
59
60
  document.body.onunload = save
61
62
  return nest({
63
    'unread.sync.isUnread': isUnread,
64
    'unread.sync.markRead': markRead,
65
    'unread.obs.userMessages': userMessages
66
  })
67
}
68
69