Files: 010c28ba45ecc8a029b813a3cd9e7edc8e098059 / modules_basic / avatar-image.js
2648 bytesRaw
1 | |
2 | var getAvatar = require('ssb-avatar') |
3 | var h = require('hyperscript') |
4 | var ref = require('ssb-ref') |
5 | var path = require('path') |
6 | var visualize = require('visualize-buffer') |
7 | |
8 | var pull = require('pull-stream') |
9 | |
10 | var self_id = require('../keys').id |
11 | |
12 | exports.needs = { |
13 | sbot_query: 'first', |
14 | blob_url: 'first' |
15 | } |
16 | |
17 | exports.gives = { |
18 | connection_status: true, avatar_image: true |
19 | } |
20 | |
21 | |
22 | function isFunction (f) { |
23 | return 'function' === typeof f |
24 | } |
25 | |
26 | |
27 | var ready = false |
28 | var waiting = [] |
29 | |
30 | var last = 0 |
31 | |
32 | var cache = {} |
33 | |
34 | exports.create = function (api) { |
35 | var avatars = {} |
36 | |
37 | //blah blah |
38 | return { |
39 | connection_status: function (err) { |
40 | if (err) return |
41 | pull( |
42 | api.sbot_query({ |
43 | query: [{ |
44 | $filter: { |
45 | timestamp: {$gt: last || 0 }, |
46 | value: { content: { |
47 | type: "about", |
48 | about: {$prefix: "@"}, |
49 | image: {link: {$prefix: "&"}} |
50 | }} |
51 | }}, |
52 | { |
53 | $map: { |
54 | id: ["value", "content", "about"], |
55 | image: ["value", "content", "image", "link"], |
56 | by: ["value", "author"], |
57 | ts: 'timestamp' |
58 | }}], |
59 | live: true |
60 | }), |
61 | pull.drain(function (a) { |
62 | if(a.sync) { |
63 | ready = true |
64 | while(waiting.length) waiting.shift()() |
65 | return |
66 | } |
67 | last = a.ts |
68 | //set image for avatar. |
69 | //overwrite another avatar |
70 | //you picked. |
71 | if( |
72 | //if there is no avatar |
73 | (!avatars[a.id]) || |
74 | //if i chose this avatar |
75 | (a.by == self_id) || |
76 | //they chose their own avatar, |
77 | //and current avatar was not chosen by me |
78 | (a.by === a.id && avatars[a.id].by != self_id) |
79 | ) |
80 | avatars[a.id] = a |
81 | |
82 | }) |
83 | ) |
84 | }, |
85 | |
86 | avatar_image: function (author, classes) { |
87 | classes = classes || '' |
88 | if(classes && 'string' === typeof classes) classes = '.avatar--'+classes |
89 | |
90 | function gen (id) { |
91 | if(cache[id]) return h('img', {src: cache[id]}) |
92 | var img = visualize(new Buffer(author.substring(1), 'base64'), 256) |
93 | cache[id] = img.src |
94 | return img |
95 | } |
96 | |
97 | var img = ready && avatars[author] ? h('img', {src: api.blob_url(avatars[author].image)}) : gen(author) |
98 | |
99 | ;(classes || '').split('.').filter(Boolean).forEach(function (c) { |
100 | img.classList.add(c) |
101 | }) |
102 | |
103 | if(!ready) |
104 | waiting.push(function () { |
105 | if(avatars[author]) img.src = api.blob_url(avatars[author].image) |
106 | }) |
107 | |
108 | return img |
109 | } |
110 | } |
111 | } |
112 |
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