git ssb

1
var nest = require('depnest')
2
var { h, send, when, computed, map } = require('mutant')
3
var extend = require('xtend')
4
var pull = require('pull-stream')
5
6
exports.needs = nest({
7
  sbot: {
8
    pull: {
9
      log: 'first',
10
      feed: 'first',
11
      userFeed: 'first'
12
    },
13
    obs: {
14
      connectedPeers: 'first',
15
      localPeers: 'first'
16
    }
17
  },
18
  'about.html.image': 'first',
19
  'about.obs.name': 'first',
20
  'invite.sheet': 'first',
21
22
  'message.html.compose': 'first',
23
  'message.async.publish': 'first',
24
  'progress.html.peer': 'first',
25
26
  'feed.html.rollup': 'first',
27
  'profile.obs.recentlyUpdated': 'first',
28
  'contact.obs.following': 'first',
29
  'channel.obs': {
30
    subscribed: 'first',
31
    recent: 'first'
32
  },
33
  'keys.sync.id': 'first'
34
})
35
36
exports.gives = nest({
37
  'page.html.render': true
38
})
39
40
exports.create = function (api) {
41
  return nest('page.html.render', page)
42
43
  function page (path) {
44
    if (path !== '/public') return // "/" is a sigil for "page"
45
46
    var id = api.keys.sync.id()
47
    var following = api.contact.obs.following(id)
48
    var subscribedChannels = api.channel.obs.subscribed(id)
49
    var loading = computed(subscribedChannels.sync, x => !x)
50
    var channels = computed(api.channel.obs.recent(), items => items.slice(0, 8), {comparer: arrayEq})
51
    var connectedPeers = api.sbot.obs.connectedPeers()
52
    var localPeers = api.sbot.obs.localPeers()
53
    var connectedPubs = computed([connectedPeers, localPeers], (c, l) => c.filter(x => !l.includes(x)))
54
55
    var oldest = Date.now() - (2 * 24 * 60 * 60e3)
56
    getFirstMessage(id, (_, msg) => {
57
      if (msg) {
58
        // fall back to timestamp stream before this, give 48 hrs for feeds to stabilize
59
        if (msg.value.timestamp > oldest) {
60
          oldest = Date.now()
61
        }
62
      }
63
    })
64
65
    var prepend = [
66
      api.message.html.compose({ meta: { type: 'post' }, placeholder: 'Write a public message' })
67
    ]
68
69
    var feedView = api.feed.html.rollup(getFeed, {
70
      prepend,
71
      waitFor: computed([
72
        following.sync,
73
        subscribedChannels.sync
74
      ], (...x) => x.every(Boolean)),
75
      windowSize: 500,
76
      filter: (item) => {
77
        return !item.boxed && (
78
          id === item.author ||
79
          following().has(item.author) ||
80
          subscribedChannels().has(item.channel) ||
81
          (item.repliesFrom && item.repliesFrom.has(id)) ||
82
          item.likes && item.likes.has(id)
83
        )
84
      },
85
      bumpFilter: (msg, group) => {
86
        if (!group.message) {
87
          return (
88
            isMentioned(id, msg.value.content.mentions) ||
89
            msg.value.author === id || (
90
              fromDay(msg, group.fromTime) && (
91
                following().has(msg.value.author) ||
92
                group.repliesFrom.has(id)
93
              )
94
            )
95
          )
96
        }
97
        return true
98
      }
99
    })
100
101
    var result = h('div.SplitView', [
102
      h('div.side', [
103
        getSidebar()
104
      ]),
105
      h('div.main', feedView)
106
    ])
107
108
    result.pendingUpdates = feedView.pendingUpdates
109
    result.reload = feedView.reload
110
111
    return result
112
113
    function getSidebar () {
114
      var whoToFollow = computed([following, api.profile.obs.recentlyUpdated(200), localPeers], (following, recent, peers) => {
115
        return Array.from(recent).filter(x => x !== id && !following.has(x) && !peers.includes(x)).slice(0, 10)
116
      })
117
      return [
118
        h('button -pub -full', {
119
          'ev-click': api.invite.sheet
120
        }, '+ Join Pub'),
121
        when(computed(channels, x => x.length), h('h2', 'Active Channels')),
122
        when(loading, [ h('Loading') ]),
123
        h('div', {
124
          classList: 'ChannelList',
125
          hidden: loading
126
        }, [
127
          map(channels, (channel) => {
128
            var subscribed = subscribedChannels.has(channel)
129
            return h('a.channel', {
130
              href: `#${channel}`,
131
              classList: [
132
                when(subscribed, '-subscribed')
133
              ]
134
            }, [
135
              h('span.name', '#' + channel),
136
              when(subscribed,
137
                h('a.-unsubscribe', {
138
                  'ev-click': send(unsubscribe, channel)
139
                }, 'Unsubscribe'),
140
                h('a.-subscribe', {
141
                  'ev-click': send(subscribe, channel)
142
                }, 'Subscribe')
143
              )
144
            ])
145
          }, {maxTime: 5})
146
        ]),
147
148
        PeerList(localPeers, 'Local'),
149
        PeerList(connectedPubs, 'Connected Pubs'),
150
151
        when(computed(whoToFollow, x => x.length), h('h2', 'Who to follow')),
152
        when(following.sync,
153
          h('div', {
154
            classList: 'ProfileList'
155
          }, [
156
            map(whoToFollow, (id) => {
157
              return h('a.profile', {
158
                href: id
159
              }, [
160
                h('div.avatar', [api.about.html.image(id)]),
161
                h('div.main', [
162
                  h('div.name', [ '@', api.about.obs.name(id) ])
163
                ])
164
              ])
165
            })
166
          ])
167
        )
168
      ]
169
    }
170
171
    function PeerList (ids, title) {
172
      return [
173
        when(computed(ids, x => x.length), h('h2', title)),
174
        h('div', {
175
          classList: 'ProfileList'
176
        }, [
177
          map(ids, (id) => {
178
            return h('a.profile', {
179
              classList: [ '-connected' ],
180
              href: id
181
            }, [
182
              h('div.avatar', [api.about.html.image(id)]),
183
              h('div.main', [
184
                h('div.name', [ api.about.obs.name(id) ])
185
              ]),
186
              h('div.progress', [
187
                api.progress.html.peer(id)
188
              ])
189
            ])
190
          })
191
        ])
192
      ]
193
    }
194
195
    function getFeed (opts) {
196
      if (opts.lt && opts.lt < oldest) {
197
        opts = extend(opts, {lt: parseInt(opts.lt, 10)})
198
        return pull(
199
          api.sbot.pull.feed(opts),
200
          pull.map((msg) => {
201
            if (msg.sync) {
202
              return msg
203
            } else {
204
              return {key: msg.key, value: msg.value, timestamp: msg.value.timestamp}
205
            }
206
          })
207
        )
208
      } else {
209
        return api.sbot.pull.log(opts)
210
      }
211
    }
212
213
    function getFirstMessage (feedId, cb) {
214
      api.sbot.pull.userFeed({id: feedId, gte: 0, limit: 1})(null, cb)
215
    }
216
217
    function subscribe (id) {
218
      api.message.async.publish({
219
        type: 'channel',
220
        channel: id,
221
        subscribed: true
222
      })
223
    }
224
225
    function unsubscribe (id) {
226
      api.message.async.publish({
227
        type: 'channel',
228
        channel: id,
229
        subscribed: false
230
      })
231
    }
232
  }
233
}
234
235
function isMentioned (id, list) {
236
  if (Array.isArray(list)) {
237
    return list.includes(id)
238
  } else {
239
    return false
240
  }
241
}
242
243
function fromDay (msg, fromTime) {
244
  return (fromTime - msg.timestamp) < (24 * 60 * 60e3)
245
}
246
247
function arrayEq (a, b) {
248
  if (Array.isArray(a) && Array.isArray(b) && a.length === b.length && a !== b) {
249
    return a.every((value, i) => value === b[i])
250
  }
251
}
252