git ssb

1
var MutantMap = require('@mmckegg/mutant/map')
2
var computed = require('@mmckegg/mutant/computed')
3
var when = require('@mmckegg/mutant/when')
4
var send = require('@mmckegg/mutant/send')
5
var pull = require('pull-stream')
6
var extend = require('xtend')
7
8
var plugs = require('patchbay/plugs')
9
var h = require('../lib/h')
10
var message_compose = plugs.first(exports.message_compose = [])
11
var sbot_log = plugs.first(exports.sbot_log = [])
12
var sbot_feed = plugs.first(exports.sbot_feed = [])
13
var sbot_user_feed = plugs.first(exports.sbot_user_feed = [])
14
15
var feed_summary = plugs.first(exports.feed_summary = [])
16
var obs_channels = plugs.first(exports.obs_channels = [])
17
var obs_subscribed_channels = plugs.first(exports.obs_subscribed_channels = [])
18
var get_id = plugs.first(exports.get_id = [])
19
var publish = plugs.first(exports.sbot_publish = [])
20
var obs_following = plugs.first(exports.obs_following = [])
21
var obs_recently_updated_feeds = plugs.first(exports.obs_recently_updated_feeds = [])
22
var avatar_image = plugs.first(exports.avatar_image = [])
23
var avatar_name = plugs.first(exports.avatar_name = [])
24
var obs_local = plugs.first(exports.obs_local = [])
25
var obs_connected = plugs.first(exports.obs_connected = [])
26
27
exports.screen_view = function (path, sbot) {
28
  if (path === '/public') {
29
    var id = get_id()
30
    var channels = computed(obs_channels(), items => items.slice(0, 8), {comparer: arrayEq})
31
    var subscribedChannels = obs_subscribed_channels(id)
32
    var loading = computed(subscribedChannels.sync, x => !x)
33
    var connectedPeers = obs_connected()
34
    var localPeers = obs_local()
35
    var connectedPubs = computed([connectedPeers, localPeers], (c, l) => c.filter(x => !l.includes(x)))
36
    var following = obs_following(id)
37
38
    var oldest = Date.now() - (2 * 24 * 60 * 60e3)
39
    getFirstMessage(id, (_, msg) => {
40
      if (msg) {
41
        // fall back to timestamp stream before this, give 48 hrs for feeds to stabilize
42
        if (msg.value.timestamp > oldest) {
43
          oldest = Date.now()
44
        }
45
      }
46
    })
47
48
    var whoToFollow = computed([obs_following(id), obs_recently_updated_feeds(200)], (following, recent) => {
49
      return Array.from(recent).filter(x => x !== id && !following.has(x)).slice(0, 10)
50
    })
51
52
    var feedSummary = feed_summary(getFeed, [
53
      message_compose({type: 'post'}, {placeholder: 'Write a public message'})
54
    ], {
55
      waitUntil: computed([
56
        following.sync,
57
        subscribedChannels.sync
58
      ], x => x.every(Boolean)),
59
      windowSize: 500,
60
      filter: (item) => {
61
        return (
62
          id === item.author ||
63
          following().has(item.author) ||
64
          subscribedChannels().has(item.channel) ||
65
          (item.repliesFrom && item.repliesFrom.has(id)) ||
66
          item.digs && item.digs.has(id)
67
        )
68
      },
69
      bumpFilter: (msg, group) => {
70
        if (!group.message) {
71
          return (
72
            isMentioned(id, msg.value.content.mentions) ||
73
            msg.value.author === id || (
74
              fromDay(msg, group.fromTime) && (
75
                following().has(msg.value.author) ||
76
                group.repliesFrom.has(id)
77
              )
78
            )
79
          )
80
        }
81
        return true
82
      }
83
    })
84
85
    var result = h('SplitView', [
86
      h('div.side', [
87
        h('h2', 'Active Channels'),
88
        when(loading, [ h('Loading') ]),
89
        h('ChannelList', {
90
          hidden: loading
91
        }, [
92
          MutantMap(channels, (channel) => {
93
            var subscribed = subscribedChannels.has(channel.id)
94
            return h('a.channel', {
95
              href: `##${channel.id}`,
96
              classList: [
97
                when(subscribed, '-subscribed')
98
              ]
99
            }, [
100
              h('span.name', '#' + channel.id),
101
              when(subscribed,
102
                h('a -unsubscribe', {
103
                  'ev-click': send(unsubscribe, channel.id)
104
                }, 'Unsubscribe'),
105
                h('a -subscribe', {
106
                  'ev-click': send(subscribe, channel.id)
107
                }, 'Subscribe')
108
              )
109
            ])
110
          }, {maxTime: 5})
111
        ]),
112
113
        when(computed(localPeers, x => x.length), h('h2', 'Local')),
114
        h('ProfileList', [
115
          MutantMap(localPeers, (id) => {
116
            return h('a.profile', {
117
              classList: [
118
                when(computed([connectedPeers, id], (p, id) => p.includes(id)), '-connected')
119
              ],
120
              href: `#${id}`
121
            }, [
122
              h('div.avatar', [avatar_image(id)]),
123
              h('div.main', [
124
                h('div.name', [ avatar_name(id) ])
125
              ])
126
            ])
127
          })
128
        ]),
129
130
        when(computed(whoToFollow, x => x.length), h('h2', 'Who to follow')),
131
        h('ProfileList', [
132
          MutantMap(whoToFollow, (id) => {
133
            return h('a.profile', {
134
              href: `#${id}`
135
            }, [
136
              h('div.avatar', [avatar_image(id)]),
137
              h('div.main', [
138
                h('div.name', [ avatar_name(id) ])
139
              ])
140
            ])
141
          })
142
        ]),
143
144
        when(computed(connectedPubs, x => x.length), h('h2', 'Connected Pubs')),
145
        h('ProfileList', [
146
          MutantMap(connectedPubs, (id) => {
147
            return h('a.profile', {
148
              classList: [ '-connected' ],
149
              href: `#${id}`
150
            }, [
151
              h('div.avatar', [avatar_image(id)]),
152
              h('div.main', [
153
                h('div.name', [ avatar_name(id) ])
154
              ])
155
            ])
156
          })
157
        ])
158
      ]),
159
      h('div.main', [ feedSummary ])
160
    ])
161
162
    result.pendingUpdates = feedSummary.pendingUpdates
163
    result.reload = feedSummary.reload
164
165
    return result
166
  }
167
168
  // scoped
169
170
  function getFeed (opts) {
171
    if (opts.lt && opts.lt < oldest) {
172
      opts = extend(opts, {lt: parseInt(opts.lt, 10)})
173
      return pull(
174
        sbot_feed(opts),
175
        pull.map((msg) => {
176
          if (msg.sync) {
177
            return msg
178
          } else {
179
            return {key: msg.key, value: msg.value, timestamp: msg.value.timestamp}
180
          }
181
        })
182
      )
183
    } else {
184
      return sbot_log(opts)
185
    }
186
  }
187
}
188
189
function fromDay (msg, fromTime) {
190
  return (fromTime - msg.timestamp) < (24 * 60 * 60e3)
191
}
192
193
function isMentioned (id, list) {
194
  if (Array.isArray(list)) {
195
    return list.includes(id)
196
  } else {
197
    return false
198
  }
199
}
200
201
function subscribe (id) {
202
  publish({
203
    type: 'channel',
204
    channel: id,
205
    subscribed: true
206
  })
207
}
208
209
function unsubscribe (id) {
210
  publish({
211
    type: 'channel',
212
    channel: id,
213
    subscribed: false
214
  })
215
}
216
217
function arrayEq (a, b) {
218
  if (Array.isArray(a) && Array.isArray(b) && a.length === b.length && a !== b) {
219
    return a.every((value, i) => value === b[i])
220
  }
221
}
222
223
function getFirstMessage (feedId, cb) {
224
  sbot_user_feed({id: feedId, gte: 0, limit: 1})(null, cb)
225
}
226