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.followWarning': 'first',
26
  'feed.html.rollup': 'first',
27
  'profile.obs.recentlyUpdated': 'first',
28
  'profile.obs.contact': 'first',
29
  'contact.obs.following': 'first',
30
  'contact.obs.blocking': 'first',
31
  'channel.obs': {
32
    subscribed: 'first',
33
    recent: 'first'
34
  },
35
  'channel.sync.normalize': 'first',
36
  'keys.sync.id': 'first',
37
  'settings.obs.get': 'first',
38
  'intl.sync.i18n': 'first'
39
})
40
41
exports.gives = nest({
42
  'page.html.render': true
43
})
44
45
exports.create = function (api) {
46
  const i18n = api.intl.sync.i18n
47
  return nest('page.html.render', page)
48
49
  function page (path) {
50
    if (path !== '/public') return // "/" is a sigil for "page"
51
52
    var id = api.keys.sync.id()
53
    var following = api.contact.obs.following(id)
54
    var blocking = api.contact.obs.blocking(id)
55
    var subscribedChannels = api.channel.obs.subscribed(id)
56
    var recentChannels = api.channel.obs.recent()
57
    var loading = computed([subscribedChannels.sync, recentChannels.sync], (...args) => !args.every(Boolean))
58
    var channels = computed(recentChannels, items => items.slice(0, 8), {comparer: arrayEq})
59
    var connectedPeers = api.sbot.obs.connectedPeers()
60
    var localPeers = api.sbot.obs.localPeers()
61
    var connectedPubs = computed([connectedPeers, localPeers], (c, l) => c.filter(x => !l.includes(x)))
62
    var contact = api.profile.obs.contact(id)
63
64
    var prepend = [
65
      api.message.html.compose({ meta: { type: 'post' }, placeholder: i18n('Write a public message') }),
66
      noVisibleNewPostsWarning()
67
    ]
68
69
    var lastMessage = null
70
71
    var getStream = (opts) => {
72
      if (!opts.lt) {
73
        // HACK: reset the isReplacementMessage check
74
        lastMessage = null
75
      }
76
      if (opts.lt != null && !opts.lt.marker) {
77
        // if an lt has been specified that is not a marker, assume stream is finished
78
        return pull.empty()
79
      } else {
80
        return api.sbot.pull.stream(sbot => sbot.patchwork.roots(extend(opts, {
81
          ids: [id],
82
          onlySubscribedChannels: filters() && filters().onlySubscribed
83
        })))
84
      }
85
    }
86
87
    var filters = api.settings.obs.get('filters')
88
    var feedView = api.feed.html.rollup(getStream, {
89
      prepend,
90
      prefiltered: true, // we've already filtered out the roots we don't want to include
91
      updateStream: api.sbot.pull.stream(sbot => sbot.patchwork.latest({ids: [id]})),
92
      bumpFilter: function (msg) {
93
        // this needs to match the logic in sbot/roots so that we display the
94
        // correct bump explainations
95
        if (msg.value && msg.value.content && typeof msg.value.content === 'object') {
96
          var type = msg.value.content.type
97
          if (type === 'vote') return false
98
99
          var author = msg.value.author
100
101
          if (id === author || following().includes(author)) {
102
            return true
103
          } else if (matchesSubscribedChannel(msg)) {
104
            return 'matches-channel'
105
          }
106
        }
107
      },
108
      rootFilter: function (msg) {
109
        // skip messages that are directly replaced by the previous message
110
        // e.g. follow / unfollow in quick succession
111
        // THIS IS A TOTAL HACK!!! SHOULD BE REPLACED WITH A PROPER ROLLUP!
112
        var isOutdated = isReplacementMessage(msg, lastMessage)
113
        if (checkFeedFilter(msg) && !isOutdated) {
114
          lastMessage = msg
115
          return true
116
        }
117
      },
118
      compactFilter: function (msg, root) {
119
        if (!root && api.message.sync.root(msg)) {
120
          // msg has a root, but is being displayed as root (fork)
121
          return true
122
        }
123
      },
124
      waitFor: computed([
125
        following.sync,
126
        subscribedChannels.sync
127
      ], (...x) => x.every(Boolean))
128
    })
129
130
    // call reload whenever filters changes (equivalent to the refresh from inside rollup)
131
    filters(feedView.reload)
132
133
    var result = h('div.SplitView', [
134
      h('div.side', [
135
        getSidebar()
136
      ]),
137
      h('div.main', feedView)
138
    ])
139
140
    result.pendingUpdates = feedView.pendingUpdates
141
    result.reload = function () {
142
      feedView.reload()
143
    }
144
145
    return result
146
147
    function checkFeedFilter (root) {
148
      if (filters()) {
149
        if (filters().following && getType(root) === 'contact') return false
150
      }
151
      return true
152
    }
153
154
    function matchesSubscribedChannel (msg) {
155
      if (msg.filterResult) {
156
        return msg.filterResult.matchesChannel || msg.filterResult.matchingTags.length
157
      } else {
158
        var channel = api.channel.sync.normalize(msg.value.content.channel)
159
        var tagged = checkTag(msg.value.content.mentions)
160
        var isSubscribed = channel ? subscribedChannels().has(channel) : false
161
        return isSubscribed || tagged
162
      }
163
    }
164
165
    function checkTag (mentions) {
166
      if (Array.isArray(mentions)) {
167
        return mentions.some((mention) => {
168
          if (mention && typeof mention.link === 'string' && mention.link.startsWith('#')) {
169
            var channel = api.channel.sync.normalize(mention.link.slice(1))
170
            return channel ? subscribedChannels().has(channel) : false
171
          }
172
        })
173
      }
174
    }
175
176
    function getSidebar () {
177
      var whoToFollow = computed([api.profile.obs.recentlyUpdated(), following, blocking, localPeers], (recent, ...ignoreFeeds) => {
178
        return recent.filter(x => x !== id && !ignoreFeeds.some(f => f.includes(x))).slice(0, 10)
179
      })
180
      return [
181
        h('button -pub -full', {
182
          'ev-click': api.invite.sheet
183
        }, i18n('+ Join Pub')),
184
        when(loading, [ h('Loading') ], [
185
          when(computed(channels, x => x.length), h('h2', i18n('Active Channels'))),
186
          h('div', {
187
            classList: 'ChannelList',
188
            hidden: loading
189
          }, [
190
            map(channels, (channel) => {
191
              var subscribed = subscribedChannels.has(channel)
192
              return h('a.channel', {
193
                href: `#${channel}`,
194
                classList: [
195
                  when(subscribed, '-subscribed')
196
                ]
197
              }, [
198
                h('span.name', '#' + channel),
199
                when(subscribed,
200
                  h('a.-unsubscribe', {
201
                    'ev-click': send(unsubscribe, channel)
202
                  }, i18n('Unsubscribe')),
203
                  h('a.-subscribe', {
204
                    'ev-click': send(subscribe, channel)
205
                  }, i18n('Subscribe'))
206
                )
207
              ])
208
            }, {maxTime: 5}),
209
            h('a.channel -more', {href: '/channels'}, i18n('More Channels...'))
210
          ])
211
        ]),
212
213
        PeerList(localPeers, i18n('Local')),
214
        PeerList(connectedPubs, i18n('Connected Pubs')),
215
216
        when(computed(whoToFollow, x => x.length), h('h2', i18n('Who to follow'))),
217
        when(following.sync,
218
          h('div', {
219
            classList: 'ProfileList'
220
          }, [
221
            map(whoToFollow, (id) => {
222
              return h('a.profile', {
223
                href: id
224
              }, [
225
                h('div.avatar', [api.about.html.image(id)]),
226
                h('div.main', [
227
                  h('div.name', [ api.about.obs.name(id) ])
228
                ])
229
              ])
230
            })
231
          ])
232
        )
233
      ]
234
    }
235
236
    function PeerList (ids, title) {
237
      return [
238
        when(computed(ids, x => x.length), h('h2', title)),
239
        h('div', {
240
          classList: 'ProfileList'
241
        }, [
242
          map(ids, (id) => {
243
            var connected = computed([connectedPeers, id], (peers, id) => peers.includes(id))
244
            return h('a.profile', {
245
              classList: [
246
                when(connected, '-connected')
247
              ],
248
              href: id
249
            }, [
250
              h('div.avatar', [api.about.html.image(id)]),
251
              h('div.main', [
252
                h('div.name', [ api.about.obs.name(id) ])
253
              ]),
254
              h('div.progress', [
255
                api.progress.html.peer(id)
256
              ]),
257
              h('div.controls', [
258
                h('a.disconnect', {href: '#disconnect', 'ev-click': send(disconnect, id), title: i18n('Force Disconnect')}, ['x'])
259
              ])
260
            ])
261
          })
262
        ])
263
      ]
264
    }
265
266
    function noVisibleNewPostsWarning() {
267
      var explanation = i18n('You may not be able to see new content until you follow some users or pubs.')
268
      
269
      var shownWhen = computed([loading, contact.isNotFollowingAnybody],
270
           (isLoading,isNotFollowingAnybody) => !isLoading && isNotFollowingAnybody
271
        )
272
273
      return api.feed.html.followWarning(shownWhen, explanation);
274
    }
275
276
    function subscribe (id) {
277
      api.message.async.publish({
278
        type: 'channel',
279
        channel: id,
280
        subscribed: true
281
      })
282
    }
283
284
    function unsubscribe (id) {
285
      api.message.async.publish({
286
        type: 'channel',
287
        channel: id,
288
        subscribed: false
289
      })
290
    }
291
292
    function disconnect (id) {
293
      onceTrue(api.sbot.obs.connection, (sbot) => {
294
        sbot.patchwork.disconnect(id)
295
      })
296
    }
297
  }
298
}
299
300
function getType (msg) {
301
  return msg && msg.value && msg.value.content && msg.value.content.type
302
}
303
304
function hasChannel (msg) {
305
  return getType(msg) !== 'channel' && msg && msg.value && msg.value.content && !!msg.value.content.channel
306
}
307
308
function arrayEq (a, b) {
309
  if (Array.isArray(a) && Array.isArray(b) && a.length === b.length && a !== b) {
310
    return a.every((value, i) => value === b[i])
311
  }
312
}
313
314
function isReplacementMessage (msgA, msgB) {
315
  if (msgA && msgB && msgA.value.content && msgB.value.content && msgA.value.content.type === msgB.value.content.type) {
316
    if (msgA.key === msgB.key) return false
317
    var type = msgA.value.content.type
318
    if (type === 'contact') {
319
      return msgA.value.author === msgB.value.author && msgA.value.content.contact === msgB.value.content.contact
320
    }
321
  }
322
}
323