git ssb

1
var h = require('hyperscript')
2
var pull = require('pull-stream')
3
var Scroller = require('pull-scroll')
4
var mfr = require('map-filter-reduce')
5
6
exports.needs = {
7
  build_scroller: 'first',
8
  message_render: 'first',
9
  message_compose: 'first',
10
  sbot_log: 'first',
11
  sbot_query: 'first',
12
}
13
14
exports.gives = {
15
  message_meta: true,
16
  screen_view: true,
17
  connection_status: true,
18
  suggest_search: true,
19
  suggest_mentions: true,
20
  suggest_channel: true
21
}
22
23
exports.create = function (api) {
24
25
  var channels
26
27
  var filter = {$filter: {value: {content: {channel: {$gt: ''}}}}}
28
  var map = {$map: {'name': ['value', 'content', 'channel']}}
29
  var reduce = {$reduce: {
30
    name: 'name',
31
    rank: {$count: true}
32
  }}
33
34
  return {
35
    message_meta,
36
    screen_view,
37
    connection_status,
38
    suggest_search,
39
    suggest_mentions,
40
    suggest_channel
41
  }
42
43
  function message_meta (msg) {
44
    var chan = msg.value.content.channel
45
    if (chan)
46
      return h('a', {
47
        href: '##'+chan,
48
        style: { order: 98 },
49
      }, '#'+chan)
50
  }
51
52
  function screen_view (path) {
53
    if(path[0] === '#') {
54
      var channel = path.substr(1)
55
56
      var composer = api.message_compose({type: 'post', channel: channel})
57
      var { container, content } = api.build_scroller({ prepend: composer })
58
59
      function matchesChannel(msg) {
60
        if (msg.sync) console.error('SYNC', msg)
61
        var c = msg && msg.value && msg.value.content
62
        return c && c.channel === channel
63
      }
64
65
      pull(
66
        api.sbot_log({old: false}),
67
        pull.filter(matchesChannel),
68
        Scroller(container, content, api.message_render, true, false)
69
      )
70
71
      pull(
72
        api.sbot_query({reverse: true, query: [
73
          {$filter: {value: {content: {channel: channel}}}}
74
        ]}),
75
        Scroller(container, content, api.message_render, false, false)
76
      )
77
78
      return container
79
    }
80
  }
81
82
  function connection_status (err) {
83
    if(err) return
84
85
    channels = []
86
87
    pull(
88
      api.sbot_query({query: [filter, map, reduce]}),
89
      pull.collect(function (err, chans) {
90
        if (err) return console.error(err)
91
        channels = chans.concat(channels)
92
      })
93
    )
94
95
    pull(
96
      api.sbot_log({old: false}),
97
      mfr.filter(filter),
98
      mfr.map(map),
99
      pull.drain(function (chan) {
100
        var c = channels.find(function (e) {
101
          return e.name === chan.name
102
        })
103
        if (c) c.rank++
104
        else channels.push(chan)
105
      })
106
    )
107
  }
108
109
  function suggest_search (query) {
110
    return function (cb) {
111
      if(!/^#\w/.test(query)) return cb()
112
113
      cb(null, channels.filter(function (chan) {
114
        return ('#'+chan.name).substring(0, query.length) === query
115
      })
116
      .map(function (chan) {
117
        var name = '#'+chan.name
118
        return {
119
          title: name,
120
          subtitle: '(' + chan.rank + ')',
121
          value: name
122
        }
123
      }))
124
    }
125
  }
126
127
  function suggest_mentions (query) {
128
    return function (cb) {
129
      if(!/^#\w/.test(query)) return cb()
130
131
      cb(null, channels.filter(function (chan) {
132
        return ('#'+chan.name).substring(0, query.length) === query
133
      })
134
      .map(function (chan) {
135
        var name = '#'+chan.name
136
        return {
137
          title: name,
138
          subtitle: '(' + chan.rank + ')',
139
          value: '['+name+']('+name+')'
140
        }
141
      }))
142
    }
143
  }
144
145
  function suggest_channel (query) {
146
    return function (cb) {
147
      if (!/^#\w/.test(query)) return cb()
148
149
      cb(null, channels.filter(function (chan) {
150
        return (`#${chan.name}`).substring(0, query.length) === query
151
      })
152
      .map(function (chan) {
153
        var name = `#${chan.name}`
154
        return {
155
          title: name,
156
          subtitle: `(${chan.rank})`,
157
          value: `#${name.substr(1)}`
158
        }
159
      }))
160
    }
161
  }
162
}
163