git ssb

1
const nest = require('depnest')
2
const { h, computed, map, when, Dict, Array: MutantArray, Value, Set, resolve } = require('mutant')
3
const pull = require('pull-stream')
4
const next = require('pull-next-step')
5
const get = require('lodash/get')
6
const isEmpty = require('lodash/isEmpty')
7
const path = require('path')
8
9
exports.gives = nest({
10
  'app.html.sideNav': true,
11
  'unread.sync.markUnread': true
12
})
13
14
exports.needs = nest({
15
  'app.html.scroller': 'first',
16
  'about.html.avatar': 'first',
17
  'about.obs.name': 'first',
18
  'feed.pull.private': 'first',
19
  'keys.sync.id': 'first',
20
  'history.sync.push': 'first',
21
  'history.obs.store': 'first',
22
  'message.html.subject': 'first',
23
  'sbot.obs.localPeers': 'first',
24
  'translations.sync.strings': 'first',
25
  'unread.sync.isUnread': 'first'
26
})
27
28
exports.create = (api) => {
29
  var recentMsgCache = MutantArray()
30
  var usersLastMsgCache = Dict() // { id: [ msgs ] }
31
  var unreadMsgsCache = Dict() // { id: [ msgs ] }
32
33
  return nest({
34
    //intercept markUnread and remove them from the cache.
35
    'unread.sync.markUnread': function (msg) {
36
      unreadMsgsCache.get(msg.value.content.root || msg.key)
37
        .delete(msg.key)
38
      unreadMsgsCache.get(msg.value.author)
39
        .delete(msg.key)
40
    },
41
    'app.html.sideNav': sideNav,
42
  })
43
44
  function isMatch (location) {
45
    if (location.page) {
46
      if (location.page.match(/^blog/)) return true
47
      if (location.page.match(/^thread/)) return true
48
      if (location.page.match(/^user/)) return true
49
      if (location.page.match(/^channel/)) return true
50
    }
51
    if (location.key) {
52
      return true
53
    }
54
    return false
55
  }
56
57
  function sideNav (location) {
58
    if (!isMatch(location)) return
59
60
    const strings = api.translations.sync.strings()
61
    const myKey = api.keys.sync.id()
62
63
    var nearby = api.sbot.obs.localPeers()
64
65
    // Unread message counts
66
    function updateCache (cache, msg) {
67
      if(api.unread.sync.isUnread(msg)) 
68
        cache.add(msg.key)
69
      else
70
        cache.delete(msg.key)
71
    }
72
73
    function updateUnreadMsgsCache (msg) {
74
      updateCache(getUnreadMsgsCache(msg.value.author), msg)
75
      updateCache(getUnreadMsgsCache(msg.value.content.root || msg.key), msg)
76
    }
77
78
    pull(
79
      next(api.feed.pull.private, {reverse: true, limit: 1000, live: false, property: ['value', 'timestamp']}),
80
      privateMsgFilter(),
81
      pull.drain(updateUnreadMsgsCache)
82
    )
83
84
    pull(
85
      next(api.feed.pull.private, {old: false, live: true, property: ['value', 'timestamp']}),
86
      privateMsgFilter(),
87
      pull.drain(updateUnreadMsgsCache)
88
    )
89
90
    return h('SideNav -discovery', [
91
      LevelOneSideNav(),
92
      LevelTwoSideNav()
93
    ])
94
95
    function LevelOneSideNav () {
96
      function isDiscoverLocation (loc) {
97
        const PAGES_UNDER_DISCOVER = ['blogIndex', 'blogShow', 'userShow']
98
99
        if (PAGES_UNDER_DISCOVER.includes(location.page)) return true
100
        if (location.page === 'threadNew') return false        
101
        if (get(location, 'value.private') === undefined) return true
102
        return false
103
      }
104
105
      const prepend = [
106
        // Nearby
107
        computed(nearby, n => !isEmpty(n) ? h('header', strings.peopleNearby) : null),
108
        map(nearby, feedId => Option({
109
          notifications: notifications(feedId),
110
          imageEl: api.about.html.avatar(feedId, 'small'),
111
          label: api.about.obs.name(feedId),
112
          selected: location.feed === feedId && !isDiscoverLocation(location),
113
          location: computed(recentMsgCache, recent => {
114
            const lastMsg = recent.find(msg => msg.value.author === feedId)
115
            return lastMsg
116
              ? Object.assign(lastMsg, { feed: feedId })
117
              : { page: 'threadNew', feed: feedId }
118
          }),
119
        }), { comparer: (a, b) => a === b }),
120
121
        // ---------------------
122
        computed(nearby, n => !isEmpty(n) ?  h('hr') : null),
123
124
        // Discover
125
        Option({
126
          // notifications: '!', //TODO - count this! 
127
          // imageEl: h('i.fa.fa-binoculars'),
128
          imageEl: h('i', [
129
            h('img', { src: path.join(__dirname, '../../../assets', 'discover.png') })
130
          ]),
131
          label: strings.blogIndex.title,
132
          selected: isDiscoverLocation(location),
133
          location: { page: 'blogIndex' },
134
        }),
135
136
        // My subscriptions
137
        Option({
138
          imageEl: h('i', [
139
            h('img', { src: path.join(__dirname, '../../../assets', 'discover.png') })
140
          ]),
141
          label: "My subscriptions",
142
          selected: isDiscoverLocation(location),
143
          location: { page: 'channelSubscriptions', scope: 'user' },
144
        }),
145
146
        // Friends subscriptions
147
        Option({
148
          imageEl: h('i', [
149
            h('img', { src: path.join(__dirname, '../../../assets', 'discover.png') })
150
          ]),
151
          label: "Friends subscriptions",
152
          selected: isDiscoverLocation(location),
153
          location: { page: 'channelSubscriptions', scope: 'friends' },
154
        })
155
      ]
156
157
      return api.app.html.scroller({
158
        classList: [ 'level', '-one' ],
159
        prepend,
160
        stream: api.feed.pull.private,
161
        filter: privateMsgFilter,
162
        store: recentMsgCache,
163
        updateTop: updateRecentMsgCache,
164
        updateBottom: updateRecentMsgCache,
165
        render: (msgObs) => {
166
          const msg = resolve(msgObs)
167
          const { author } = msg.value
168
          if (nearby.has(author)) return
169
170
          return Option({
171
            //the number of threads with each peer
172
            notifications: notifications(author),
173
            imageEl: api.about.html.avatar(author),
174
            label: api.about.obs.name(author),
175
            selected: location.feed === author,
176
            location: Object.assign({}, msg, { feed: author }) // TODO make obs?
177
          })
178
        }
179
      })
180
181
      function updateRecentMsgCache (soFar, newMsg) {
182
        soFar.transaction(() => { 
183
          const { author, timestamp } = newMsg.value
184
          const index = indexOf(soFar, (msg) => author === resolve(msg).value.author)
185
          var object = Value()
186
187
          if (index >= 0) {
188
            // reference already exists, lets use this instead!
189
            const existingMsg = soFar.get(index)
190
191
            if (resolve(existingMsg).value.timestamp > timestamp) return 
192
            // but abort if the existing reference is newer
193
194
            object = existingMsg
195
            soFar.deleteAt(index)
196
          }
197
198
          object.set(newMsg)
199
200
          const justOlderPosition = indexOf(soFar, (msg) => timestamp > resolve(msg).value.timestamp)
201
          if (justOlderPosition > -1) {
202
            soFar.insert(object, justOlderPosition)
203
          } else {
204
            soFar.push(object)
205
          }
206
        })
207
      }
208
209
    }
210
211
    function getUnreadMsgsCache (key) {
212
      var cache = unreadMsgsCache.get(key)
213
      if (!cache) {
214
        cache = Set ()
215
        unreadMsgsCache.put(key, cache)
216
      }
217
      return cache
218
    }
219
220
    function notifications (key) {
221
      return computed(getUnreadMsgsCache(key), cache => cache.length)
222
    }
223
224
    function LevelTwoSideNav () {
225
      const { key, value, feed: targetUser, page } = location
226
      const root = get(value, 'content.root', key)
227
      if (!targetUser) return
228
      if (page === 'userShow') return
229
230
231
      const prepend = Option({
232
        selected: page === 'threadNew',
233
        location: {page: 'threadNew', feed: targetUser},
234
        label: h('Button', strings.threadNew.action.new),
235
      })
236
237
      var userLastMsgCache = usersLastMsgCache.get(targetUser)
238
      if (!userLastMsgCache) {
239
        userLastMsgCache = MutantArray()
240
        usersLastMsgCache.put(targetUser, userLastMsgCache)
241
      }
242
243
      return api.app.html.scroller({
244
        classList: [ 'level', '-two' ],
245
        prepend,
246
        stream: api.feed.pull.private,
247
        filter: () => pull(
248
          pull.filter(msg => !msg.value.content.root),
249
          pull.filter(msg => msg.value.content.type === 'post'),
250
          pull.filter(msg => msg.value.content.recps),
251
          pull.filter(msg => msg.value.content.recps
252
            .map(recp => typeof recp === 'object' ? recp.link : recp)
253
            .some(recp => recp === targetUser)
254
          )
255
        ),
256
        store: userLastMsgCache,
257
        updateTop: updateLastMsgCache,
258
        updateBottom: updateLastMsgCache,
259
        render: (rootMsgObs) => {
260
          const rootMsg = resolve(rootMsgObs)
261
          return Option({
262
            notifications: notifications(rootMsg.key),
263
            label: api.message.html.subject(rootMsg),
264
            selected: rootMsg.key === root,
265
            location: Object.assign(rootMsg, { feed: targetUser }),
266
          })
267
        }
268
      })
269
270
      function updateLastMsgCache (soFar, newMsg) {
271
        soFar.transaction(() => { 
272
          const { timestamp } = newMsg.value
273
          const index = indexOf(soFar, (msg) => timestamp === resolve(msg).value.timestamp)
274
275
          if (index >= 0) return
276
          // if reference already exists, abort
277
278
          var object = Value(newMsg)
279
280
          const justOlderPosition = indexOf(soFar, (msg) => timestamp > resolve(msg).value.timestamp)
281
          if (justOlderPosition > -1) {
282
            soFar.insert(object, justOlderPosition)
283
          } else {
284
            soFar.push(object)
285
          }
286
        })
287
      }
288
    }
289
290
    function Option ({ notifications = 0, imageEl, label, location, selected }) {
291
      const className = selected ? '-selected' : '' 
292
      function goToLocation (e) {
293
        e.preventDefault()
294
        e.stopPropagation()
295
        api.history.sync.push(resolve(location))
296
      }
297
298
      if (!imageEl) {
299
        return h('Option', { className, 'ev-click': goToLocation }, [
300
          when(notifications, h('div.spacer', h('div.alert', notifications))),
301
          h('div.label', label)
302
        ])
303
      }
304
305
      return h('Option', { className }, [
306
        h('div.circle', [
307
          when(notifications, h('div.alert', notifications)),
308
          imageEl
309
        ]),
310
        h('div.label', { 'ev-click': goToLocation }, label)
311
      ])
312
    }
313
314
    function privateMsgFilter () {
315
      return pull(
316
        pull.filter(msg => msg.value.content.type === 'post'),
317
        pull.filter(msg => msg.value.author != myKey),
318
        pull.filter(msg => msg.value.content.recps)
319
      )
320
    }
321
  }
322
}
323
324
function indexOf (array, fn) {
325
  for (var i = 0; i < array.getLength(); i++) {
326
    if (fn(array.get(i))) {
327
      return i
328
    }
329
  }
330
  return -1
331
}
332
333
334