Files: 0652352c9432242c53c49eb8cb21d59d1a0c5f51 / modules / message / html / backlinks.js
1984 bytesRaw
1 | var nest = require('depnest') |
2 | var ref = require('ssb-ref') |
3 | var { h, map, computed } = require('mutant') |
4 | |
5 | exports.needs = nest({ |
6 | 'message.sync.root': 'first', |
7 | 'message.obs': { |
8 | backlinks: 'first', |
9 | name: 'first', |
10 | author: 'first' |
11 | }, |
12 | 'profile.html.person': 'first', |
13 | 'intl.sync.i18n': 'first' |
14 | }) |
15 | |
16 | exports.gives = nest('message.html.backlinks') |
17 | |
18 | exports.create = function (api) { |
19 | const i18n = api.intl.sync.i18n |
20 | return nest('message.html.backlinks', function (msg, {includeReferences = true, includeForks = true} = {}) { |
21 | if (!ref.type(msg.key)) return [] |
22 | |
23 | var rootId = api.message.sync.root(msg) |
24 | var backlinks = api.message.obs.backlinks(msg.key) |
25 | var references = includeReferences ? computed([backlinks, msg], onlyReferences) : [] |
26 | var forks = (includeForks && rootId) ? computed([backlinks, msg], onlyForks) : [] |
27 | |
28 | return [ |
29 | map(forks, link => { |
30 | return h('a.backlink', { |
31 | href: msg.key, anchor: link.id |
32 | }, [ |
33 | h('strong', [ |
34 | api.profile.html.person(link.author), i18n(' forked this discussion:') |
35 | ]), ' ', |
36 | api.message.obs.name(link.id) |
37 | ]) |
38 | }), |
39 | map(references, link => { |
40 | return h('a.backlink', { |
41 | href: link.id, title: link.id |
42 | }, [ |
43 | h('strong', [ |
44 | api.profile.html.person(link.author), i18n(' referenced this message:') |
45 | ]), ' ', |
46 | api.message.obs.name(link.id) |
47 | ]) |
48 | }) |
49 | ] |
50 | }) |
51 | |
52 | function onlyReferences (backlinks, msg) { |
53 | return backlinks.filter(link => link.root !== msg.key && !includeOrEqual(link.branch, msg.key)) |
54 | } |
55 | |
56 | function onlyForks (backlinks, msg) { |
57 | return backlinks.filter(link => link.root === msg.key && includeOrEqual(link.branch, msg.key) && api.message.sync.root(msg)) |
58 | } |
59 | } |
60 | |
61 | function includeOrEqual (valueOrArray, item) { |
62 | if (Array.isArray(valueOrArray)) { |
63 | return valueOrArray.includes(item) |
64 | } else { |
65 | return valueOrArray === item |
66 | } |
67 | } |
68 |
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