Files: 07ff4c602e229a458d6210ac0c19dc2b699b740f / render.js
13145 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[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 | return h('img', |
47 | { src: this.opts.img_base + href, |
48 | alt: text, |
49 | title: title |
50 | }).outerHTML; |
51 | }; |
52 | |
53 | function renderEmoji(emoji) { |
54 | var opts = this.renderer.opts; |
55 | var mentions = opts.mentions; |
56 | var url = mentions[emoji] |
57 | ? opts.blob_base + encodeURIComponent(mentions[emoji]) |
58 | : emoji in emojis && opts.emoji_base + escape(emoji) + '.png'; |
59 | return url |
60 | ? h('img.ssb-emoji', |
61 | { src: url, |
62 | alt: ':' + escape(emoji) + ':', |
63 | title: ':' + escape(emoji) + ':', |
64 | height: 16, width: 16 |
65 | }).outerHTML |
66 | : ":" + emoji + ":"; |
67 | } |
68 | |
69 | function escape(str) { |
70 | return String(str) |
71 | .replace(/&/g, "&") |
72 | .replace(/</g, "<") |
73 | .replace(/>/g, ">") |
74 | .replace(/"/g, """); |
75 | } |
76 | |
77 | function formatMsgs(id, ext, opts) { |
78 | switch (ext || "html") { |
79 | case "html": |
80 | return pull(renderThread(opts), wrapPage(id)); |
81 | case "js": |
82 | return pull(renderThread(opts), wrapJSEmbed(opts)); |
83 | case "json": |
84 | return wrapJSON(); |
85 | case "rss": |
86 | return pull(renderRssItem(opts), wrapRss(id, opts)); |
87 | default: |
88 | return null; |
89 | } |
90 | } |
91 | |
92 | function wrap(before, after) { |
93 | return function(read) { |
94 | return cat([pull.once(before), read, pull.once(after)]); |
95 | }; |
96 | } |
97 | |
98 | function callToAction() { |
99 | return h('a.call-to-action', |
100 | { href: 'https://www.scuttlebutt.nz' }, |
101 | 'Join Scuttlebutt now').outerHTML; |
102 | } |
103 | |
104 | function toolTipTop() { |
105 | return h('span.top-tip', |
106 | 'You are reading content from ', |
107 | h('a', { href: 'https://www.scuttlebutt.nz' }, |
108 | 'Scuttlebutt')).outerHTML; |
109 | } |
110 | |
111 | function renderAbout(opts, about, showAllHTML = "") { |
112 | var figCaption = h('figcaption'); |
113 | figCaption.innerHTML = 'Feed of ' + about.name + '<br>' + |
114 | (about.description != undefined ? |
115 | marked(about.description, opts.marked) : ''); |
116 | return pull( |
117 | pull.map(renderMsg.bind(this, opts)), |
118 | wrap(toolTipTop() + '<main>' + |
119 | h('article', |
120 | h('header', |
121 | h('figure', |
122 | h('img', |
123 | { src: opts.img_base + about.image, |
124 | height: 200, |
125 | width: 200 |
126 | }), |
127 | figCaption) |
128 | )).outerHTML, |
129 | showAllHTML + '</main>' + callToAction()) |
130 | ); |
131 | } |
132 | |
133 | function renderThread(opts, showAllHTML = "") { |
134 | return pull( |
135 | pull.map(renderMsg.bind(this, opts)), |
136 | wrap(toolTipTop() + '<main>', |
137 | showAllHTML + '</main>' + callToAction()) |
138 | ); |
139 | } |
140 | |
141 | function renderRssItem(opts) { |
142 | return pull( |
143 | pull.map(renderRss.bind(this, opts)) |
144 | ); |
145 | } |
146 | |
147 | function wrapPage(id) { |
148 | return wrap( |
149 | "<!doctype html><html><head>" + |
150 | "<meta charset=utf-8>" + |
151 | "<title>" + |
152 | id + " | ssb-viewer" + |
153 | "</title>" + |
154 | '<meta name=viewport content="width=device-width,initial-scale=1">' + |
155 | styles + |
156 | "</head><body>", |
157 | "</body></html>" |
158 | ); |
159 | } |
160 | |
161 | function wrapRss(id, opts) { |
162 | return wrap( |
163 | '<?xml version="1.0" encoding="UTF-8" ?>' + |
164 | '<rss version="2.0">' + |
165 | '<channel>' + |
166 | '<title>' + id + ' | ssb-viewer</title>', |
167 | |
168 | '</channel>'+ |
169 | '</rss>' |
170 | ); |
171 | } |
172 | |
173 | var styles = ` |
174 | <style> |
175 | html { background-color: #f1f3f5; } |
176 | body { |
177 | color: #212529; |
178 | font-family: "Helvetica Neue", "Calibri Light", Roboto, sans-serif; |
179 | -webkit-font-smoothing: antialiased; |
180 | -moz-osx-font-smoothing: grayscale; |
181 | letter-spacing: 0.02em; |
182 | padding-top: 30px; |
183 | padding-bottom: 50px; |
184 | } |
185 | a { color: #364fc7; } |
186 | |
187 | .top-tip, .top-tip a { |
188 | color: #868e96; |
189 | } |
190 | .top-tip { |
191 | text-align: center; |
192 | display: block; |
193 | margin-bottom: 10px; |
194 | font-size: 14px; |
195 | } |
196 | main { margin: 0 auto; max-width: 40rem; } |
197 | main article:first-child { border-radius: 3px 3px 0 0; } |
198 | main article:last-child { border-radius: 0 0 3px 3px; } |
199 | article { |
200 | background-color: white; |
201 | padding: 20px; |
202 | box-shadow: 0 1px 3px #949494; |
203 | position: relative; |
204 | } |
205 | .top-right { position: absolute; top: 20px; right: 20px; } |
206 | article > header { margin-bottom: 20px; } |
207 | article > header > figure { |
208 | margin: 0; display: flex; |
209 | } |
210 | article > header > figure > img { |
211 | border-radius: 2px; margin-right: 10px; |
212 | } |
213 | article > header > figure > figcaption { |
214 | display: flex; flex-direction: column; justify-content: space-around; |
215 | } |
216 | .ssb-avatar-name { font-size: 1.2em; font-weight: bold; } |
217 | time a { color: #868e96; } |
218 | .ssb-avatar-name, time a { |
219 | text-decoration: none; |
220 | } |
221 | .ssb-avatar-name:hover, time:hover a { |
222 | text-decoration: underline; |
223 | } |
224 | section p { line-height: 1.45em; } |
225 | section p img { |
226 | max-width: 100%; |
227 | max-height: 50vh; |
228 | margin: 0 auto; |
229 | } |
230 | .status { |
231 | font-style: italic; |
232 | } |
233 | |
234 | code { |
235 | display: inline; |
236 | padding: 2px 5px; |
237 | font-weight: 600; |
238 | background-color: #e9ecef; |
239 | border-radius: 3px; |
240 | color: #495057; |
241 | } |
242 | blockquote { |
243 | padding-left: 1.2em; |
244 | margin: 0; |
245 | color: #868e96; |
246 | border-left: 5px solid #ced4da; |
247 | } |
248 | pre { |
249 | background-color: #212529; |
250 | color: #ced4da; |
251 | font-weight: bold; |
252 | padding: 5px; |
253 | border-radius: 3px; |
254 | position: relative; |
255 | } |
256 | pre::before { |
257 | content: "METADATA"; |
258 | position: absolute; |
259 | top: -7px; |
260 | left: 0px; |
261 | background-color: #212529; |
262 | padding: 2px 4px 0; |
263 | border-radius: 2px; |
264 | font-family: "Helvetica Neue", "Calibri Light", Roboto, sans-serif; |
265 | font-size: 9px; |
266 | } |
267 | .call-to-action { |
268 | display: block; |
269 | margin: 0 auto; |
270 | width: 13em; |
271 | text-align: center; |
272 | text-decoration: none; |
273 | margin-top: 20px; |
274 | margin-bottom: 60px; |
275 | background-color: #5c7cfa; |
276 | padding: 15px 0; |
277 | color: #edf2ff; |
278 | border-radius: 3px; |
279 | border-bottom: 3px solid #3b5bdb; |
280 | } |
281 | .call-to-action:hover { |
282 | background-color: #748ffc; |
283 | border-bottom: 3px solid #4c6ef5; |
284 | } |
285 | </style> |
286 | `; |
287 | |
288 | function wrapJSON() { |
289 | var first = true; |
290 | return pull(pull.map(JSON.stringify), join(","), wrap("[", "]")); |
291 | } |
292 | |
293 | function wrapJSEmbed(opts) { |
294 | return pull( |
295 | wrap('<link rel=stylesheet href="' + opts.base + 'static/base.css">', ""), |
296 | pull.map(docWrite), |
297 | opts.base_token && rewriteBase(new RegExp(opts.base_token, "g")) |
298 | ); |
299 | } |
300 | |
301 | function rewriteBase(token) { |
302 | // detect the origin of the script and rewrite the js/html to use it |
303 | return pull( |
304 | replace(token, '" + SSB_VIEWER_ORIGIN + "/'), |
305 | wrap( |
306 | "var SSB_VIEWER_ORIGIN = (function () {" + |
307 | 'var scripts = document.getElementsByTagName("script")\n' + |
308 | "var script = scripts[scripts.length-1]\n" + |
309 | "if (!script) return location.origin\n" + |
310 | 'return script.src.replace(/\\/%.*$/, "")\n' + |
311 | "}())\n", |
312 | "" |
313 | ) |
314 | ); |
315 | } |
316 | |
317 | function join(delim) { |
318 | var first = true; |
319 | return pull.map(function(val) { |
320 | if (!first) return delim + String(val); |
321 | first = false; |
322 | return val; |
323 | }); |
324 | } |
325 | |
326 | function replace(re, rep) { |
327 | return pull.map(function(val) { |
328 | return String(val).replace(re, rep); |
329 | }); |
330 | } |
331 | |
332 | function docWrite(str) { |
333 | return "document.write(" + JSON.stringify(str) + ")\n"; |
334 | } |
335 | |
336 | function renderMsg(opts, msg) { |
337 | var c = msg.value.content || {}; |
338 | var name = encodeURIComponent(msg.key); |
339 | return h('article#' + name, |
340 | h('header', |
341 | h('figure', |
342 | h('img', { alt: '', |
343 | src: opts.img_base + msg.author.image, |
344 | height: 50, width: 50 }), |
345 | h('figcaption', |
346 | h('a.ssb-avatar-name', |
347 | { href: opts.base + escape(msg.value.author) }, |
348 | msg.author.name), |
349 | msgTimestamp(msg, opts.base + name)))), |
350 | render(opts, c)).outerHTML; |
351 | } |
352 | |
353 | function renderRss(opts, msg) { |
354 | var c = msg.value.content || {}; |
355 | var name = encodeURIComponent(msg.key); |
356 | |
357 | let content = h('div', render(opts, c)).innerHTML; |
358 | |
359 | if (!content) { |
360 | return null; |
361 | } |
362 | |
363 | return ( |
364 | '<item>' + |
365 | '<title>' + escape(c.type || 'private') + '</title>' + |
366 | '<author>' + escape(msg.author.name) + '</author>' + |
367 | '<description><![CDATA[' + content + ']]></description>' + |
368 | '<link>' + opts.base + escape(name) + '</link>' + |
369 | '<pubDate>' + new Date(msg.value.timestamp).toUTCString() + '</pubDate>' + |
370 | '<guid>' + msg.key + '</guid>' + |
371 | '</item>' |
372 | ); |
373 | } |
374 | |
375 | function msgTimestamp(msg, link) { |
376 | var date = new Date(msg.value.timestamp); |
377 | var isoStr = date.toISOString(); |
378 | return h('time.ssb-timestamp', |
379 | { datetime: isoStr }, |
380 | h('a', |
381 | { href: link, |
382 | title: isoStr }, |
383 | formatDate(date))); |
384 | } |
385 | |
386 | function formatDate(date) { |
387 | return htime(date); |
388 | } |
389 | |
390 | function render(opts, c) { |
391 | var base = opts.base; |
392 | if (c.type === "post") { |
393 | var channel = c.channel |
394 | ? h('div.top-right', |
395 | h('a', |
396 | { href: base + 'channel/' + c.channel }, |
397 | '#' + c.channel)) |
398 | : ""; |
399 | return [channel, renderPost(opts, c)]; |
400 | } else if (c.type == "vote" && c.vote.expression == "Dig") { |
401 | var channel = c.channel |
402 | ? [' in ', |
403 | h('a', |
404 | { href: base + 'channel/' + c.channel }, |
405 | '#' + c.channel)] |
406 | : ""; |
407 | var linkedText = "this"; |
408 | if (typeof c.vote.linkedText != "undefined") |
409 | linkedText = c.vote.linkedText.substring(0, 75); |
410 | return h('span.status', |
411 | ['Liked ', |
412 | h('a', { href: base + c.vote.link }, linkedText), |
413 | channel]); |
414 | } else if (c.type == "vote") { |
415 | var linkedText = "this"; |
416 | if (typeof c.vote.linkedText != "undefined") |
417 | linkedText = c.vote.linkedText.substring(0, 75); |
418 | return h('span.status', |
419 | ['Voted ', |
420 | h('a', { href: base + c.vote.link }, linkedText)]); |
421 | } else if (c.type == "contact" && c.following) { |
422 | var name = c.contact; |
423 | if (typeof c.contactAbout != "undefined") |
424 | name = c.contactAbout.name; |
425 | return h('span.status', |
426 | ['Followed ', |
427 | h('a', { href: base + c.contact }, name)]); |
428 | } else if (c.type == "contact" && !c.following) { |
429 | var name = c.contact; |
430 | if (typeof c.contactAbout != "undefined") |
431 | name = c.contactAbout.name; |
432 | return h('span.status', |
433 | ['Unfollowed ', |
434 | h('a', { href: base + c.contact }, name)]); |
435 | } else if (typeof c == "string") { |
436 | return h('span.status', 'Wrote something private') |
437 | } |
438 | else if (c.type == "about") { |
439 | return [h('span.status', 'Changed something in about'), |
440 | renderDefault(c)]; |
441 | } |
442 | else if (c.type == "issue") { |
443 | return [h('span.status', |
444 | "Created a git issue" + |
445 | (c.repoName != undefined ? " in repo " + c.repoName : ""), |
446 | renderPost(opts, c))]; |
447 | } |
448 | else if (c.type == "git-update") { |
449 | return h('span.status', |
450 | "Did a git update " + |
451 | (c.repoName != undefined ? " in repo " + c.repoName : "") + |
452 | '<br>' + |
453 | (c.commits != undefined ? |
454 | c.commits.map(com => { return "-" +com.title; }).join('<br>') : "")); |
455 | } |
456 | else if (c.type == "ssb-dns") { |
457 | return [h('span.status', 'Updated DNS'), renderDefault(c)]; |
458 | } |
459 | else if (c.type == "pub") { |
460 | return h('span.status', 'Connected to the pub ' + c.address.host); |
461 | } |
462 | else if (c.type == "channel" && c.subscribed) |
463 | return h('span.status', |
464 | 'Subscribed to channel ', |
465 | h('a', |
466 | { href: base + 'channel/' + c.channel }, |
467 | '#' + c.channel)); |
468 | else if (c.type == "channel" && !c.subscribed) |
469 | return h('span.status', |
470 | 'Unsubscribed from channel ', |
471 | h('a', |
472 | { href: base + 'channel/' + c.channel }, |
473 | '#' + c.channel)) |
474 | else return renderDefault(c); |
475 | } |
476 | |
477 | function renderPost(opts, c) { |
478 | opts.mentions = {}; |
479 | if (Array.isArray(c.mentions)) { |
480 | c.mentions.forEach(function (link) { |
481 | if (link && link.name && link.link) |
482 | opts.mentions[link.name] = link.link; |
483 | }); |
484 | } |
485 | var s = h('section'); |
486 | s.innerHTML = marked(String(c.text), opts.marked); |
487 | return s; |
488 | } |
489 | |
490 | function renderDefault(c) { |
491 | return h('pre', JSON.stringify(c, 0, 2)); |
492 | } |
493 | |
494 | function renderShowAll(showAll, url) { |
495 | if (showAll) |
496 | return ''; |
497 | else |
498 | return '<br>' + h('a', { href : url + '?showAll' }, 'Show whole feed').outerHTML; |
499 | } |
500 |
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