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mixmix / ticktack



Tree: 31dca712149ea746e5ee65adb698bb4ce4a82c4e

Files: 31dca712149ea746e5ee65adb698bb4ce4a82c4e / about / async / suggest.js

2585 bytesRaw
1const nest = require('depnest')
2const { Struct, map, concat, dictToCollection, computed, lookup, watch, keys, resolve } = require('mutant')
3
4exports.gives = nest('about.async.suggest')
5
6exports.needs = nest({
7 'about.obs.groupedValues': 'first',
8 'about.obs.name': 'first',
9 'about.obs.imageUrl': 'first',
10 'contact.obs.following': 'first',
11 'feed.obs.recent': 'first',
12 'keys.sync.id': 'first'
13})
14
15exports.create = function (api) {
16 var suggestions = null
17 var recentSuggestions = null
18
19 return nest('about.async.suggest', suggest)
20
21 function suggest () {
22 loadSuggestions()
23 return function (word) {
24 if (!word) return recentSuggestions()
25
26 return suggestions()
27 .filter((item) => {
28 return item.title.toLowerCase().startsWith(word.toLowerCase())
29 })
30 .reverse()
31 }
32 }
33
34 function loadSuggestions () {
35 if (suggestions) return
36
37 var id = api.keys.sync.id()
38 var following = api.contact.obs.following(id)
39 var recentlyUpdated = api.feed.obs.recent()
40 var contacts = computed([following, recentlyUpdated], (a, b) => {
41 var result = new Set (a)
42 b.forEach(item => result.add(item))
43
44 return Array.from(result)
45 })
46
47 recentSuggestions = map(
48 computed(recentlyUpdated, (items) => Array.from(items).slice(0, 10)),
49 suggestion,
50 {idle: true}
51 )
52
53 const suggestionsRecord = lookup(contacts, contact => {
54 return [contact, keys(api.about.obs.groupedValues(contact, 'name'))]
55 })
56
57 suggestions = concat(
58 map(dictToCollection(suggestionsRecord), pluralSuggestions, {idle: true})
59 )
60
61 watch(recentSuggestions)
62 watch(suggestions)
63 }
64
65 function pluralSuggestions (item) {
66 const id = resolve(item.key)
67 return map(item.value, name => {
68 return Struct({
69 id,
70 title: name,
71 subtitle: subtitle(id, name),
72 value: computed([name, id], mention),
73 image: api.about.obs.imageUrl(id),
74 showBoth: true
75 })
76 })
77 }
78
79 function suggestion (id) {
80 var name = api.about.obs.name(id)
81 return Struct({
82 title: name,
83 id,
84 subtitle: id.substring(0, 10),
85 value: computed([name, id], mention),
86 image: api.about.obs.imageUrl(id),
87 showBoth: true
88 })
89 }
90
91 function subtitle (id, name) {
92 return computed([api.about.obs.name(id)], commonName => {
93 return name.toLowerCase() === commonName.toLowerCase()
94 ? id.substring(0, 10)
95 : `${commonName} ${id.substring(0, 10)}`
96 })
97 }
98}
99
100function mention (name, id) {
101 return `[@${name}](${id})`
102}
103
104

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