Files: 9f0354990d92384a0a2d222469e672f428402bfd / render.js
14048 bytesRaw
1 | var path = require('path'); |
2 | var pull = require("pull-stream"); |
3 | var marked = require("ssb-marked"); |
4 | var htime = require("human-time"); |
5 | var emojis = require("emoji-named-characters"); |
6 | var cat = require("pull-cat"); |
7 | var h = require('hyperscript'); |
8 | |
9 | var emojiDir = path.join(require.resolve("emoji-named-characters"), "../pngs"); |
10 | |
11 | exports.wrapPage = wrapPage; |
12 | exports.MdRenderer = MdRenderer; |
13 | exports.renderEmoji = renderEmoji; |
14 | exports.formatMsgs = formatMsgs; |
15 | exports.renderThread = renderThread; |
16 | exports.renderAbout = renderAbout; |
17 | exports.renderShowAll = renderShowAll; |
18 | exports.renderRssItem = renderRssItem; |
19 | exports.wrapRss = wrapRss; |
20 | |
21 | function MdRenderer(opts) { |
22 | marked.Renderer.call(this, {}); |
23 | this.opts = opts; |
24 | } |
25 | |
26 | MdRenderer.prototype = new marked.Renderer(); |
27 | |
28 | MdRenderer.prototype.urltransform = function(href) { |
29 | if (!href) return false; |
30 | switch (href[0]) { |
31 | case "#": |
32 | return this.opts.base + "channel/" + href.slice(1); |
33 | case "%": |
34 | return this.opts.msg_base + encodeURIComponent(href); |
35 | case "@": |
36 | href = (this.opts.mentions && this.opts.mentions[href.substr(1)]) || href; |
37 | return this.opts.feed_base + encodeURIComponent(href); |
38 | case "&": |
39 | return this.opts.blob_base + encodeURIComponent(href); |
40 | } |
41 | if (href.indexOf("javascript:") === 0) return false; |
42 | return href; |
43 | }; |
44 | |
45 | MdRenderer.prototype.image = function(href, title, text) { |
46 | if (text.endsWith(".svg")) |
47 | return h('object', |
48 | { type: 'image/svg+xml', |
49 | data: href, |
50 | alt: text }).outerHTML; |
51 | else |
52 | return h('img', |
53 | { src: this.opts.img_base + href, |
54 | alt: text, |
55 | title: title |
56 | }).outerHTML; |
57 | }; |
58 | |
59 | function renderEmoji(emoji) { |
60 | var opts = this.renderer.opts; |
61 | var url = opts.mentions[emoji] |
62 | ? opts.blob_base + encodeURIComponent(opts.mentions[emoji]) |
63 | : emoji in emojis && opts.emoji_base + escape(emoji) + '.png'; |
64 | return url |
65 | ? h('img.ssb-emoji', |
66 | { src: url, |
67 | alt: ':' + escape(emoji) + ':', |
68 | title: ':' + escape(emoji) + ':', |
69 | height: 16, width: 16 |
70 | }).outerHTML |
71 | : ":" + emoji + ":"; |
72 | } |
73 | |
74 | function escape(str) { |
75 | return String(str) |
76 | .replace(/&/g, "&") |
77 | .replace(/</g, "<") |
78 | .replace(/>/g, ">") |
79 | .replace(/"/g, """); |
80 | } |
81 | |
82 | function formatMsgs(id, ext, opts) { |
83 | switch (ext || "html") { |
84 | case "html": |
85 | return pull(renderThread(opts, id, ''), wrapPage(id)); |
86 | case "js": |
87 | return pull(renderThread(opts), wrapJSEmbed(opts)); |
88 | case "json": |
89 | return wrapJSON(); |
90 | case "rss": |
91 | return pull(renderRssItem(opts), wrapRss(id, opts)); |
92 | default: |
93 | return null; |
94 | } |
95 | } |
96 | |
97 | function wrap(before, after) { |
98 | return function(read) { |
99 | return cat([pull.once(before), read, pull.once(after)]); |
100 | }; |
101 | } |
102 | |
103 | function callToAction() { |
104 | return h('a.call-to-action', |
105 | { href: 'https://www.scuttlebutt.nz' }, |
106 | 'Join Scuttlebutt now').outerHTML; |
107 | } |
108 | |
109 | function toolTipTop() { |
110 | return h('span.top-tip', |
111 | 'You are reading content from ', |
112 | h('a', { href: 'https://www.scuttlebutt.nz' }, |
113 | 'Scuttlebutt')).outerHTML; |
114 | } |
115 | |
116 | function renderAbout(opts, about, showAllHTML = "") { |
117 | opts.mentions = {}; |
118 | var figCaption = h('figcaption'); |
119 | figCaption.innerHTML = 'Feed of ' + about.name + '<br>' + marked(String(about.description), opts.marked); |
120 | return pull( |
121 | pull.map(renderMsg.bind(this, opts, '')), |
122 | wrap(toolTipTop() + '<main>' + |
123 | h('article', |
124 | h('header', |
125 | h('figure', |
126 | h('img', |
127 | { src: opts.img_base + about.image, |
128 | style: 'max-height: 200px; max-width: 200px;' |
129 | }), |
130 | figCaption) |
131 | )).outerHTML, |
132 | showAllHTML + '</main>' + callToAction()) |
133 | ); |
134 | } |
135 | |
136 | function renderThread(opts, id, showAllHTML = "") { |
137 | return pull( |
138 | pull.map(renderMsg.bind(this, opts, id)), |
139 | wrap(toolTipTop() + '<main>', |
140 | showAllHTML + '</main>' + callToAction()) |
141 | ); |
142 | } |
143 | |
144 | function renderRssItem(opts) { |
145 | return pull( |
146 | pull.map(renderRss.bind(this, opts)) |
147 | ); |
148 | } |
149 | |
150 | function wrapPage(id) { |
151 | return wrap( |
152 | "<!doctype html><html><head>" + |
153 | "<meta charset=utf-8>" + |
154 | "<title>" + |
155 | id + " | ssb-viewer" + |
156 | "</title>" + |
157 | '<meta name=viewport content="width=device-width,initial-scale=1">' + |
158 | styles + |
159 | "</head><body>", |
160 | "</body></html>" |
161 | ); |
162 | } |
163 | |
164 | function wrapRss(id, opts) { |
165 | return wrap( |
166 | '<?xml version="1.0" encoding="UTF-8" ?>' + |
167 | '<rss version="2.0">' + |
168 | '<channel>' + |
169 | '<title>' + id + ' | ssb-viewer</title>', |
170 | |
171 | '</channel>'+ |
172 | '</rss>' |
173 | ); |
174 | } |
175 | |
176 | var styles = ` |
177 | <style> |
178 | html { background-color: #f1f3f5; } |
179 | body { |
180 | color: #212529; |
181 | font-family: "Helvetica Neue", "Calibri Light", Roboto, sans-serif; |
182 | -webkit-font-smoothing: antialiased; |
183 | -moz-osx-font-smoothing: grayscale; |
184 | letter-spacing: 0.02em; |
185 | padding-top: 30px; |
186 | padding-bottom: 50px; |
187 | } |
188 | a { color: #364fc7; } |
189 | |
190 | .top-tip, .top-tip a { |
191 | color: #868e96; |
192 | } |
193 | .top-tip { |
194 | text-align: center; |
195 | display: block; |
196 | margin-bottom: 10px; |
197 | font-size: 14px; |
198 | } |
199 | main { margin: 0 auto; max-width: 40rem; } |
200 | main article:first-child { border-radius: 3px 3px 0 0; } |
201 | main article:last-child { border-radius: 0 0 3px 3px; } |
202 | article { |
203 | background-color: white; |
204 | padding: 20px; |
205 | box-shadow: 0 1px 3px #949494; |
206 | position: relative; |
207 | } |
208 | .top-right { position: absolute; top: 20px; right: 20px; } |
209 | article > header { margin-bottom: 20px; } |
210 | article > header > figure { |
211 | margin: 0; display: flex; |
212 | } |
213 | article > header > figure > img { |
214 | border-radius: 2px; margin-right: 10px; |
215 | } |
216 | article > header > figure > figcaption { |
217 | display: flex; flex-direction: column; justify-content: space-around; |
218 | } |
219 | .ssb-avatar-name { font-size: 1.2em; font-weight: bold; } |
220 | time a { color: #868e96; } |
221 | .ssb-avatar-name, time a { |
222 | text-decoration: none; |
223 | } |
224 | .ssb-avatar-name:hover, time:hover a { |
225 | text-decoration: underline; |
226 | } |
227 | section p { line-height: 1.45em; } |
228 | section p img { |
229 | max-width: 100%; |
230 | max-height: 50vh; |
231 | margin: 0 auto; |
232 | } |
233 | .status { |
234 | font-style: italic; |
235 | } |
236 | |
237 | code { |
238 | display: inline; |
239 | padding: 2px 5px; |
240 | font-weight: 600; |
241 | background-color: #e9ecef; |
242 | border-radius: 3px; |
243 | color: #495057; |
244 | } |
245 | blockquote { |
246 | padding-left: 1.2em; |
247 | margin: 0; |
248 | color: #868e96; |
249 | border-left: 5px solid #ced4da; |
250 | } |
251 | pre { |
252 | background-color: #212529; |
253 | color: #ced4da; |
254 | font-weight: bold; |
255 | padding: 5px; |
256 | border-radius: 3px; |
257 | position: relative; |
258 | } |
259 | pre::before { |
260 | content: "METADATA"; |
261 | position: absolute; |
262 | top: -7px; |
263 | left: 0px; |
264 | background-color: #212529; |
265 | padding: 2px 4px 0; |
266 | border-radius: 2px; |
267 | font-family: "Helvetica Neue", "Calibri Light", Roboto, sans-serif; |
268 | font-size: 9px; |
269 | } |
270 | .call-to-action { |
271 | display: block; |
272 | margin: 0 auto; |
273 | width: 13em; |
274 | text-align: center; |
275 | text-decoration: none; |
276 | margin-top: 20px; |
277 | margin-bottom: 60px; |
278 | background-color: #5c7cfa; |
279 | padding: 15px 0; |
280 | color: #edf2ff; |
281 | border-radius: 3px; |
282 | border-bottom: 3px solid #3b5bdb; |
283 | } |
284 | .call-to-action:hover { |
285 | background-color: #748ffc; |
286 | border-bottom: 3px solid #4c6ef5; |
287 | } |
288 | </style> |
289 | `; |
290 | |
291 | function wrapJSON() { |
292 | var first = true; |
293 | return pull(pull.map(JSON.stringify), join(","), wrap("[", "]")); |
294 | } |
295 | |
296 | function wrapJSEmbed(opts) { |
297 | return pull( |
298 | wrap('<link rel=stylesheet href="' + opts.base + 'static/base.css">', ""), |
299 | pull.map(docWrite), |
300 | opts.base_token && rewriteBase(new RegExp(opts.base_token, "g")) |
301 | ); |
302 | } |
303 | |
304 | function rewriteBase(token) { |
305 | // detect the origin of the script and rewrite the js/html to use it |
306 | return pull( |
307 | replace(token, '" + SSB_VIEWER_ORIGIN + "/'), |
308 | wrap( |
309 | "var SSB_VIEWER_ORIGIN = (function () {" + |
310 | 'var scripts = document.getElementsByTagName("script")\n' + |
311 | "var script = scripts[scripts.length-1]\n" + |
312 | "if (!script) return location.origin\n" + |
313 | 'return script.src.replace(/\\/%.*$/, "")\n' + |
314 | "}())\n", |
315 | "" |
316 | ) |
317 | ); |
318 | } |
319 | |
320 | function join(delim) { |
321 | var first = true; |
322 | return pull.map(function(val) { |
323 | if (!first) return delim + String(val); |
324 | first = false; |
325 | return val; |
326 | }); |
327 | } |
328 | |
329 | function replace(re, rep) { |
330 | return pull.map(function(val) { |
331 | return String(val).replace(re, rep); |
332 | }); |
333 | } |
334 | |
335 | function docWrite(str) { |
336 | return "document.write(" + JSON.stringify(str) + ")\n"; |
337 | } |
338 | |
339 | function renderMsg(opts, id, msg) { |
340 | if (opts.renderPrivate == false && typeof(msg.value.content) == 'string') return '' |
341 | var c = msg.value.content || {}; |
342 | var name = encodeURIComponent(msg.key); |
343 | return h('article#' + name, |
344 | h('header', |
345 | h('figure', |
346 | h('img', { alt: '', |
347 | src: opts.img_base + msg.author.image, |
348 | height: 50, width: 50 }), |
349 | h('figcaption', |
350 | h('a.ssb-avatar-name', |
351 | { href: opts.base + escape(msg.value.author) }, |
352 | msg.author.name), |
353 | msgTimestamp(msg, opts.base + name)))), |
354 | render(opts, id, c)).outerHTML; |
355 | } |
356 | |
357 | function renderRss(opts, msg) { |
358 | var c = msg.value.content || {}; |
359 | var name = encodeURIComponent(msg.key); |
360 | |
361 | let content = h('div', render(opts, c)).innerHTML; |
362 | |
363 | if (!content) { |
364 | return null; |
365 | } |
366 | |
367 | return ( |
368 | '<item>' + |
369 | '<title>' + escape(c.type || 'private') + '</title>' + |
370 | '<author>' + escape(msg.author.name) + '</author>' + |
371 | '<description><![CDATA[' + content + ']]></description>' + |
372 | '<link>' + opts.base + escape(name) + '</link>' + |
373 | '<pubDate>' + new Date(msg.value.timestamp).toUTCString() + '</pubDate>' + |
374 | '<guid>' + msg.key + '</guid>' + |
375 | '</item>' |
376 | ); |
377 | } |
378 | |
379 | function msgTimestamp(msg, link) { |
380 | var date = new Date(msg.value.timestamp); |
381 | var isoStr = date.toISOString(); |
382 | return h('time.ssb-timestamp', |
383 | { datetime: isoStr }, |
384 | h('a', |
385 | { href: link, |
386 | title: isoStr }, |
387 | formatDate(date))); |
388 | } |
389 | |
390 | function formatDate(date) { |
391 | return htime(date); |
392 | } |
393 | |
394 | function render(opts, id, c) { |
395 | var base = opts.base; |
396 | if (!c) return |
397 | if (c.type === "post") { |
398 | var channel = c.channel |
399 | ? h('div.top-right', |
400 | h('a', |
401 | { href: base + 'channel/' + c.channel }, |
402 | '#' + c.channel)) |
403 | : ""; |
404 | return [channel, renderPost(opts, id, c)]; |
405 | } else if (c.type == "vote" && c.vote.expression == "Dig") { |
406 | var channel = c.channel |
407 | ? [' in ', |
408 | h('a', |
409 | { href: base + 'channel/' + c.channel }, |
410 | '#' + c.channel)] |
411 | : ""; |
412 | var linkedText = "this"; |
413 | if (typeof c.vote.linkedText != "undefined") |
414 | linkedText = c.vote.linkedText.substring(0, 75); |
415 | return h('span.status', |
416 | ['Liked ', |
417 | h('a', { href: base + c.vote.link }, linkedText), |
418 | channel]); |
419 | } else if (c.type == "vote") { |
420 | var linkedText = "this"; |
421 | if (typeof c.vote.linkedText != "undefined") |
422 | linkedText = c.vote.linkedText.substring(0, 75); |
423 | return h('span.status', |
424 | ['Voted ', |
425 | h('a', { href: base + c.vote.link }, linkedText)]); |
426 | } else if (c.type == "contact" && c.following) { |
427 | var name = c.contact; |
428 | if (typeof c.contactAbout != "undefined") |
429 | name = c.contactAbout.name; |
430 | return h('span.status', |
431 | ['Followed ', |
432 | h('a', { href: base + c.contact }, name)]); |
433 | } else if (c.type == "contact" && !c.following) { |
434 | var name = c.contact; |
435 | if (typeof c.contactAbout != "undefined") |
436 | name = c.contactAbout.name; |
437 | return h('span.status', |
438 | ['Unfollowed ', |
439 | h('a', { href: base + c.contact }, name)]); |
440 | } else if (typeof c == "string") { |
441 | return h('span.status', 'Wrote something private') |
442 | } else if (c.type == "chess_move") { |
443 | return h('span.status', 'Moved a chess piece') |
444 | } else if (c.type == "chess_invite") { |
445 | return h('span.status', 'Started a chess game') |
446 | } |
447 | else if (c.type == "about") { |
448 | return [h('span.status', 'Changed something in about'), |
449 | renderDefault(c)]; |
450 | } |
451 | else if (c.type == "issue") { |
452 | return [h('span.status', |
453 | "Created a git issue" + |
454 | (c.repoName != undefined ? " in repo " + c.repoName : ""), |
455 | renderPost(opts, id, c))]; |
456 | } |
457 | else if (c.type == "git-repo") { |
458 | return h('span.status', |
459 | "Created a git repo " + c.name); |
460 | } |
461 | else if (c.type == "git-update") { |
462 | var s = h('span.status'); |
463 | s.innerHTML = "Did a git update " + |
464 | (c.repoName != undefined ? " in repo " + c.repoName : "") + |
465 | '<br>' + |
466 | (c.commits != undefined ? |
467 | c.commits.map(com => { return "-" +com.title; }).join('<br>') : ""); |
468 | return s; |
469 | } |
470 | else if (c.type == "ssb-dns") { |
471 | return [h('span.status', 'Updated DNS'), renderDefault(c)]; |
472 | } |
473 | else if (c.type == "pub") { |
474 | return h('span.status', 'Connected to the pub ' + c.address.host); |
475 | } |
476 | else if (c.type == "npm-packages") { |
477 | return [h('span.status', 'Pushed npm packages')]; |
478 | } |
479 | else if (c.type == "channel" && c.subscribed) |
480 | return h('span.status', |
481 | 'Subscribed to channel ', |
482 | h('a', |
483 | { href: base + 'channel/' + c.channel }, |
484 | '#' + c.channel)); |
485 | else if (c.type == "channel" && !c.subscribed) |
486 | return h('span.status', |
487 | 'Unsubscribed from channel ', |
488 | h('a', |
489 | { href: base + 'channel/' + c.channel }, |
490 | '#' + c.channel)) |
491 | else return renderDefault(c); |
492 | } |
493 | |
494 | function renderPost(opts, id, c) { |
495 | opts.mentions = {}; |
496 | if (Array.isArray(c.mentions)) { |
497 | c.mentions.forEach(function (link) { |
498 | if (link && link.name && link.link) |
499 | opts.mentions[link.name] = link.link; |
500 | }); |
501 | } |
502 | var s = h('section'); |
503 | var content = ''; |
504 | if (c.root && c.root != id) |
505 | content += 'Re: ' + h('a', |
506 | { href: '/' + encodeURIComponent(c.root) }, |
507 | c.root.substring(0, 10)).outerHTML + '<br>'; |
508 | s.innerHTML = content + marked(String(c.text), opts.marked); |
509 | return s; |
510 | } |
511 | |
512 | function renderDefault(c) { |
513 | return h('pre', JSON.stringify(c, 0, 2)); |
514 | } |
515 | |
516 | function renderShowAll(showAll, url) { |
517 | if (showAll) |
518 | return ''; |
519 | else |
520 | return '<br>' + h('a', { href : url + '?showAll' }, 'Show whole feed').outerHTML; |
521 | } |
522 |
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