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Dominic / patchbay



Tree: 261718c426b0d5a333dfa4acc00aacf92c5fe394

Files: 261718c426b0d5a333dfa4acc00aacf92c5fe394 / message / html / backlinks.js

1330 bytesRaw
1const nest = require('depnest')
2const { h, map, computed, when } = require('mutant')
3const ref = require('ssb-ref')
4
5exports.needs = nest({
6 'message.obs.backlinks': 'first',
7 'message.obs.name': 'first',
8 'message.async.name': 'first',
9 'sbot.sync.cache': 'first'
10})
11
12exports.gives = nest('message.html.backlinks')
13
14exports.create = function (api) {
15 return nest('message.html.backlinks', function (msg) {
16 if (!ref.isMsg(msg.key)) return []
17 var backlinks = api.message.obs.backlinks(msg.key)
18 var references = computed([backlinks, msg], onlyReferences)
19 return when(computed(references, hasItems),
20 h('MessageBacklinks', [
21 h('header', 'Referenced:'),
22 h('ul', [
23 map(references, (backlink) => {
24 return h('li', [
25 h('a -backlink', { href: backlink.id, title: backlink.id }, api.message.obs.name(backlink.id))
26 ])
27 })
28 ])
29 ])
30 )
31 })
32}
33
34function onlyReferences (backlinks, msg) {
35 return backlinks.filter(link => link.root !== msg.key && !includeOrEqual(link.branch, msg.key))
36}
37
38function hasItems (items, msg) {
39 return (items && items.length)
40}
41
42function includeOrEqual (valueOrArray, item) {
43 if (Array.isArray(valueOrArray)) {
44 return valueOrArray.includes(item)
45 } else {
46 return valueOrArray === item
47 }
48}
49

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