git ssb

1
var pull = require('pull-stream')
2
var pullCat = require('pull-cat')
3
var computed = require('mutant/computed')
4
var MutantPullReduce = require('mutant-pull-reduce')
5
var throttle = require('mutant/throttle')
6
var nest = require('depnest')
7
var hr = 60 * 60 * 1000
8
9
exports.gives = nest('feed.obs.recent')
10
11
exports.needs = nest({
12
  'sbot.pull.log': 'first'
13
})
14
15
exports.create = function (api) {
16
  return nest('feed.obs.recent', function (limit) {
17
    var stream = pull(
18
      pullCat([
19
        api.sbot.pull.log({reverse: true, limit: limit || 50}),
20
        api.sbot.pull.log({old: false})
21
      ])
22
    )
23
24
    var result = MutantPullReduce(stream, (result, msg) => {
25
      if (msg.value.timestamp && Date.now() - msg.value.timestamp < 24 * hr) {
26
        result.add(msg.value.author)
27
      }
28
      return result
29
    }, {
30
      startValue: new Set(),
31
      nextTick: true
32
    })
33
34
    var instance = throttle(result, 2000)
35
    instance.sync = result.sync
36
37
    instance.has = function (value) {
38
      return computed(instance, x => x.has(value))
39
    }
40
41
    return instance
42
  })
43
}
44