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