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Dominic / patchbay



Tree: d45e0ad160051c97802cf3566af0ab967fcc0c0e

Files: d45e0ad160051c97802cf3566af0ab967fcc0c0e / modules_basic / relationships.js

1119 bytesRaw
1var pull = require('pull-stream')
2
3function makeQuery (a, b) {
4  return {"$filter": {
5      value: {
6        author: a,
7        content: {
8          type: 'contact',
9          contact: b,
10          following: true
11        }
12      },
13    }}
14}
15
16
17exports.needs = { sbot_query: 'first' }
18
19exports.gives = {
20  follows: true,
21  followers: true,
22  follower_of: true
23}
24
25exports.create = function (api) {
26
27  return {
28    follows: function (id, cb) {
29      return api.sbot_query({query: [
30        makeQuery(id, {$prefix:"@"}),
31        {"$map": ['value', 'content', 'contact']}
32      ]})
33    },
34
35    followers: function (id) {
36      return api.sbot_query({query: [
37        makeQuery({$prefix:"@"}, id),
38        {"$map": ['value', 'author']}
39      ]})
40    },
41
42    follower_of: function (source, dest, cb) {
43      pull(
44        api.sbot_query({query: [
45          makeQuery(source, dest),
46          {$map: ['value', 'content', 'following']}
47        ]}),
48        pull.collect(function (err, ary) {
49          if(err) return cb(err)
50          else cb(null, ary.pop()) //will be true, or undefined/false
51        })
52      )
53    }
54  }
55
56}
57
58

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