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Dominic / patchbay



Tree: f6391d5b5450e27f0c7a8dba7d82a53c4ad2634a

Files: f6391d5b5450e27f0c7a8dba7d82a53c4ad2634a / modules_basic / avatar-image.js

2490 bytesRaw
1'use strict'
2var h = require('hyperscript')
3var visualize = require('visualize-buffer')
4
5var pull = require('pull-stream')
6
7var self_id = require('../keys').id
8
9exports.needs = {
10 sbot_query: 'first',
11 blob_url: 'first'
12}
13
14exports.gives = {
15 connection_status: true, avatar_image: true
16}
17
18var ready = false
19var waiting = []
20
21var last = 0
22
23var cache = {}
24
25exports.create = function (api) {
26 var avatars = {}
27
28 //blah blah
29 return {
30 connection_status: function (err) {
31 if (err) return
32 pull(
33 api.sbot_query({
34 query: [{
35 $filter: {
36 timestamp: {$gt: last || 0 },
37 value: { content: {
38 type: "about",
39 about: {$prefix: "@"},
40 image: {link: {$prefix: "&"}}
41 }}
42 }},
43 {
44 $map: {
45 id: ["value", "content", "about"],
46 image: ["value", "content", "image", "link"],
47 by: ["value", "author"],
48 ts: 'timestamp'
49 }}],
50 live: true
51 }),
52 pull.drain(function (a) {
53 if(a.sync) {
54 ready = true
55 while(waiting.length) waiting.shift()()
56 return
57 }
58 last = a.ts
59 //set image for avatar.
60 //overwrite another avatar
61 //you picked.
62 if(
63 //if there is no avatar
64 (!avatars[a.id]) ||
65 //if i chose this avatar
66 (a.by == self_id) ||
67 //they chose their own avatar,
68 //and current avatar was not chosen by me
69 (a.by === a.id && avatars[a.id].by != self_id)
70 )
71 avatars[a.id] = a
72
73 })
74 )
75 },
76
77 avatar_image: function (author, classes) {
78 classes = classes || ''
79 if(classes && 'string' === typeof classes) classes = '.avatar--'+classes
80
81 function gen (id) {
82 if(cache[id]) return h('img', {src: cache[id]})
83 var img = visualize(new Buffer(author.substring(1), 'base64'), 256)
84 cache[id] = img.src
85 return img
86 }
87
88 var img = ready && avatars[author] ? h('img', {src: api.blob_url(avatars[author].image)}) : gen(author)
89
90 ;(classes || '').split('.').filter(Boolean).forEach(function (c) {
91 img.classList.add(c)
92 })
93
94 if(!ready)
95 waiting.push(function () {
96 if(avatars[author]) img.src = api.blob_url(avatars[author].image)
97 })
98
99 return img
100 }
101 }
102}
103

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