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