git ssb

1
var nest = require('depnest')
2
var extend = require('xtend')
3
var pull = require('pull-stream')
4
var { h, send, when, computed, map, onceTrue } = require('mutant')
5
6
exports.needs = nest({
7
  sbot: {
8
    obs: {
9
      connectedPeers: 'first',
10
      localPeers: 'first',
11
      connection: 'first'
12
    }
13
  },
14
  'sbot.pull.stream': 'first',
15
  'feed.pull.public': 'first',
16
  'about.html.image': 'first',
17
  'about.obs.name': 'first',
18
  'invite.sheet': 'first',
19
20
  'message.html.compose': 'first',
21
  'message.async.publish': 'first',
22
  'message.sync.root': 'first',
23
  'progress.html.peer': 'first',
24
25
  'feed.html.rollup': 'first',
26
  'profile.obs.recentlyUpdated': 'first',
27
  'contact.obs.following': 'first',
28
  'contact.obs.blocking': 'first',
29
  'channel.obs': {
30
    subscribed: 'first',
31
    recent: 'first'
32
  },
33
  'channel.sync.normalize': 'first',
34
  'keys.sync.id': 'first',
35
  'settings.obs.get': 'first',
36
  'intl.sync.i18n': 'first'
37
})
38
39
exports.gives = nest({
40
  'page.html.render': true
41
})
42
43
exports.create = function (api) {
44
  const i18n = api.intl.sync.i18n
45
  return nest('page.html.render', page)
46
47
  function page (path) {
48
    if (path !== '/public') return // "/" is a sigil for "page"
49
50
    var id = api.keys.sync.id()
51
    var following = api.contact.obs.following(id)
52
    var blocking = api.contact.obs.blocking(id)
53
    var subscribedChannels = api.channel.obs.subscribed(id)
54
    var recentChannels = api.channel.obs.recent()
55
    var loading = computed([subscribedChannels.sync, recentChannels.sync], (...args) => !args.every(Boolean))
56
    var channels = computed(recentChannels, items => items.slice(0, 8), {comparer: arrayEq})
57
    var connectedPeers = api.sbot.obs.connectedPeers()
58
    var localPeers = api.sbot.obs.localPeers()
59
    var connectedPubs = computed([connectedPeers, localPeers], (c, l) => c.filter(x => !l.includes(x)))
60
61
    var prepend = [
62
      api.message.html.compose({ meta: { type: 'post' }, placeholder: i18n('Write a public message') })
63
    ]
64
65
    var lastMessage = null
66
67
    var getStream = (opts) => {
68
      if (!opts.lt) {
69
        // HACK: reset the isReplacementMessage check
70
        lastMessage = null
71
      }
72
      if (opts.lt != null && !opts.lt.marker) {
73
        // if an lt has been specified that is not a marker, assume stream is finished
74
        return pull.empty()
75
      } else {
76
        return api.sbot.pull.stream(sbot => sbot.patchwork.roots(extend(opts, {
77
          ids: [id],
78
          onlySubscribedChannels: filters() && filters().onlySubscribed
79
        })))
80
      }
81
    }
82
83
    var filters = api.settings.obs.get('filters')
84
    var feedView = api.feed.html.rollup(getStream, {
85
      prepend,
86
      prefiltered: true, // we've already filtered out the roots we don't want to include
87
      updateStream: api.sbot.pull.stream(sbot => sbot.patchwork.latest({ids: [id]})),
88
      bumpFilter: function (msg) {
89
        // this needs to match the logic in sbot/roots so that we display the
90
        // correct bump explainations
91
        if (msg.value && msg.value.content && typeof msg.value.content === 'object') {
92
          var type = msg.value.content.type
93
          if (type === 'vote') return false
94
95
          var author = msg.value.author
96
          return matchesSubscribedChannel(msg) || id === author || following().includes(author)
97
        }
98
      },
99
      rootFilter: function (msg) {
100
        // skip messages that are directly replaced by the previous message
101
        // e.g. follow / unfollow in quick succession
102
        // THIS IS A TOTAL HACK!!! SHOULD BE REPLACED WITH A PROPER ROLLUP!
103
        var isOutdated = isReplacementMessage(msg, lastMessage)
104
        if (checkFeedFilter(msg) && !isOutdated) {
105
          lastMessage = msg
106
          return true
107
        }
108
      },
109
      compactFilter: function (msg, root) {
110
        if (!root && api.message.sync.root(msg)) {
111
          // msg has a root, but is being displayed as root (fork)
112
          return true
113
        }
114
      },
115
      waitFor: computed([
116
        following.sync,
117
        subscribedChannels.sync
118
      ], (...x) => x.every(Boolean))
119
    })
120
121
    // call reload whenever filters changes (equivalent to the refresh from inside rollup)
122
    filters(feedView.reload)
123
124
    var result = h('div.SplitView', [
125
      h('div.side', [
126
        getSidebar()
127
      ]),
128
      h('div.main', feedView)
129
    ])
130
131
    result.pendingUpdates = feedView.pendingUpdates
132
    result.reload = function () {
133
      feedView.reload()
134
    }
135
136
    return result
137
138
    function checkFeedFilter (root) {
139
      if (filters()) {
140
        if (filters().following && getType(root) === 'contact') return false
141
      }
142
      return true
143
    }
144
145
    function matchesSubscribedChannel (msg) {
146
      var channel = api.channel.sync.normalize(msg.value.content.channel)
147
      var tagged = checkTag(msg.value.content.mentions)
148
      var isSubscribed = channel ? subscribedChannels().has(channel) : false
149
      return isSubscribed || tagged
150
    }
151
152
    function checkTag (mentions) {
153
      if (Array.isArray(mentions)) {
154
        return mentions.some((mention) => {
155
          if (mention && typeof mention.link === 'string' && mention.link.startsWith('#')) {
156
            var channel = api.channel.sync.normalize(mention.link.slice(1))
157
            return channel ? subscribedChannels().has(channel) : false
158
          }
159
        })
160
      }
161
    }
162
163
    function getSidebar () {
164
      var whoToFollow = computed([api.profile.obs.recentlyUpdated(), following, blocking, localPeers], (recent, ...ignoreFeeds) => {
165
        return recent.filter(x => x !== id && !ignoreFeeds.some(f => f.includes(x))).slice(0, 10)
166
      })
167
      return [
168
        h('button -pub -full', {
169
          'ev-click': api.invite.sheet
170
        }, i18n('+ Join Pub')),
171
        when(loading, [ h('Loading') ], [
172
          when(computed(channels, x => x.length), h('h2', i18n('Active Channels'))),
173
          h('div', {
174
            classList: 'ChannelList',
175
            hidden: loading
176
          }, [
177
            map(channels, (channel) => {
178
              var subscribed = subscribedChannels.has(channel)
179
              return h('a.channel', {
180
                href: `#${channel}`,
181
                classList: [
182
                  when(subscribed, '-subscribed')
183
                ]
184
              }, [
185
                h('span.name', '#' + channel),
186
                when(subscribed,
187
                  h('a.-unsubscribe', {
188
                    'ev-click': send(unsubscribe, channel)
189
                  }, i18n('Unsubscribe')),
190
                  h('a.-subscribe', {
191
                    'ev-click': send(subscribe, channel)
192
                  }, i18n('Subscribe'))
193
                )
194
              ])
195
            }, {maxTime: 5}),
196
            h('a.channel -more', {href: '/channels'}, i18n('More Channels...'))
197
          ])
198
        ]),
199
200
        PeerList(localPeers, i18n('Local')),
201
        PeerList(connectedPubs, i18n('Connected Pubs')),
202
203
        when(computed(whoToFollow, x => x.length), h('h2', i18n('Who to follow'))),
204
        when(following.sync,
205
          h('div', {
206
            classList: 'ProfileList'
207
          }, [
208
            map(whoToFollow, (id) => {
209
              return h('a.profile', {
210
                href: id
211
              }, [
212
                h('div.avatar', [api.about.html.image(id)]),
213
                h('div.main', [
214
                  h('div.name', [ api.about.obs.name(id) ])
215
                ])
216
              ])
217
            })
218
          ])
219
        )
220
      ]
221
    }
222
223
    function PeerList (ids, title) {
224
      return [
225
        when(computed(ids, x => x.length), h('h2', title)),
226
        h('div', {
227
          classList: 'ProfileList'
228
        }, [
229
          map(ids, (id) => {
230
            var connected = computed([connectedPeers, id], (peers, id) => peers.includes(id))
231
            return h('a.profile', {
232
              classList: [
233
                when(connected, '-connected')
234
              ],
235
              href: id
236
            }, [
237
              h('div.avatar', [api.about.html.image(id)]),
238
              h('div.main', [
239
                h('div.name', [ api.about.obs.name(id) ])
240
              ]),
241
              h('div.progress', [
242
                api.progress.html.peer(id)
243
              ]),
244
              h('div.controls', [
245
                h('a.disconnect', {href: '#disconnect', 'ev-click': send(disconnect, id), title: i18n('Force Disconnect')}, ['x'])
246
              ])
247
            ])
248
          })
249
        ])
250
      ]
251
    }
252
253
    function subscribe (id) {
254
      api.message.async.publish({
255
        type: 'channel',
256
        channel: id,
257
        subscribed: true
258
      })
259
    }
260
261
    function unsubscribe (id) {
262
      api.message.async.publish({
263
        type: 'channel',
264
        channel: id,
265
        subscribed: false
266
      })
267
    }
268
269
    function disconnect (id) {
270
      onceTrue(api.sbot.obs.connection, (sbot) => {
271
        sbot.patchwork.disconnect(id)
272
      })
273
    }
274
  }
275
}
276
277
function getType (msg) {
278
  return msg && msg.value && msg.value.content && msg.value.content.type
279
}
280
281
function hasChannel (msg) {
282
  return getType(msg) !== 'channel' && msg && msg.value && msg.value.content && !!msg.value.content.channel
283
}
284
285
function arrayEq (a, b) {
286
  if (Array.isArray(a) && Array.isArray(b) && a.length === b.length && a !== b) {
287
    return a.every((value, i) => value === b[i])
288
  }
289
}
290
291
function isReplacementMessage (msgA, msgB) {
292
  if (msgA && msgB && msgA.value.content && msgB.value.content && msgA.value.content.type === msgB.value.content.type) {
293
    if (msgA.key === msgB.key) return false
294
    var type = msgA.value.content.type
295
    if (type === 'contact') {
296
      return msgA.value.author === msgB.value.author && msgA.value.content.contact === msgB.value.content.contact
297
    }
298
  }
299
}
300