Files: 336a39d74fbef28c1b1f707863fb872bcc447a6c / render.js
12185 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 | |
19 | function MdRenderer(opts) { |
20 | marked.Renderer.call(this, {}); |
21 | this.opts = opts; |
22 | } |
23 | |
24 | MdRenderer.prototype = new marked.Renderer(); |
25 | |
26 | MdRenderer.prototype.urltransform = function(href) { |
27 | if (!href) return false; |
28 | switch (href[0]) { |
29 | case "#": |
30 | return this.opts.base + "channel/" + href.slice(1); |
31 | case "%": |
32 | return this.opts.msg_base + encodeURIComponent(href); |
33 | case "@": |
34 | href = this.opts.mentions[href.substr(1)] || href; |
35 | return this.opts.feed_base + encodeURIComponent(href); |
36 | case "&": |
37 | return this.opts.blob_base + encodeURIComponent(href); |
38 | } |
39 | if (href.indexOf("javascript:") === 0) return false; |
40 | return href; |
41 | }; |
42 | |
43 | MdRenderer.prototype.image = function(href, title, text) { |
44 | return h('img', |
45 | { src: this.opts.img_base + href, |
46 | alt: text, |
47 | title: title |
48 | }).outerHTML; |
49 | }; |
50 | |
51 | function renderEmoji(emoji) { |
52 | var opts = this.renderer.opts; |
53 | var mentions = opts.mentions; |
54 | var url = mentions[emoji] |
55 | ? opts.blob_base + encodeURIComponent(mentions[emoji]) |
56 | : emoji in emojis && opts.emoji_base + escape(emoji) + '.png'; |
57 | return url |
58 | ? h('img.ssb-emoji', |
59 | { src: url, |
60 | alt: ':' + escape(emoji) + ':', |
61 | title: ':' + escape(emoji) + ':', |
62 | height: 16, width: 16 |
63 | }).outerHTML |
64 | : ":" + emoji + ":"; |
65 | } |
66 | |
67 | function escape(str) { |
68 | return String(str) |
69 | .replace(/&/g, "&") |
70 | .replace(/</g, "<") |
71 | .replace(/>/g, ">") |
72 | .replace(/"/g, """); |
73 | } |
74 | |
75 | function formatMsgs(id, ext, opts) { |
76 | switch (ext || "html") { |
77 | case "html": |
78 | return pull(renderThread(opts), wrapPage(id)); |
79 | case "js": |
80 | return pull(renderThread(opts), wrapJSEmbed(opts)); |
81 | case "json": |
82 | return wrapJSON(); |
83 | default: |
84 | return null; |
85 | } |
86 | } |
87 | |
88 | function wrap(before, after) { |
89 | return function(read) { |
90 | return cat([pull.once(before), read, pull.once(after)]); |
91 | }; |
92 | } |
93 | |
94 | function callToAction() { |
95 | return h('a.call-to-action', |
96 | { href: 'https://www.scuttlebutt.nz' }, |
97 | 'Join Scuttlebutt now').outerHTML; |
98 | } |
99 | |
100 | function toolTipTop() { |
101 | return h('span.top-tip', |
102 | 'You are reading content from ', |
103 | h('a', { href: 'https://www.scuttlebutt.nz' }, |
104 | 'Scuttlebutt')).outerHTML; |
105 | } |
106 | |
107 | function renderAbout(opts, about, showAllHTML = "") { |
108 | var figCaption = h('figcaption'); |
109 | figCaption.innerHTML = 'Feed of ' + about.name + '<br>' + |
110 | (about.description != undefined ? |
111 | marked(about.description, opts.marked) : ''); |
112 | return pull( |
113 | pull.map(renderMsg.bind(this, opts)), |
114 | wrap(toolTipTop() + '<main>' + |
115 | h('article', |
116 | h('header', |
117 | h('figure', |
118 | h('img', |
119 | { src: opts.img_base + about.image, |
120 | height: 200, |
121 | width: 200 |
122 | }), |
123 | figCaption) |
124 | )).outerHTML, |
125 | showAllHTML + '</main>' + callToAction()) |
126 | ); |
127 | } |
128 | |
129 | function renderThread(opts, showAllHTML = "") { |
130 | return pull( |
131 | pull.map(renderMsg.bind(this, opts)), |
132 | wrap(toolTipTop() + '<main>', |
133 | showAllHTML + '</main>' + callToAction()) |
134 | ); |
135 | } |
136 | |
137 | function wrapPage(id) { |
138 | return wrap( |
139 | "<!doctype html><html><head>" + |
140 | "<meta charset=utf-8>" + |
141 | "<title>" + |
142 | id + " | ssb-viewer" + |
143 | "</title>" + |
144 | '<meta name=viewport content="width=device-width,initial-scale=1">' + |
145 | styles + |
146 | "</head><body>", |
147 | "</body></html>" |
148 | ); |
149 | } |
150 | |
151 | var styles = ` |
152 | <style> |
153 | html { background-color: #f1f3f5; } |
154 | body { |
155 | color: #212529; |
156 | font-family: "Helvetica Neue", "Calibri Light", Roboto, sans-serif; |
157 | -webkit-font-smoothing: antialiased; |
158 | -moz-osx-font-smoothing: grayscale; |
159 | letter-spacing: 0.02em; |
160 | padding-top: 30px; |
161 | padding-bottom: 50px; |
162 | } |
163 | a { color: #364fc7; } |
164 | |
165 | .top-tip, .top-tip a { |
166 | color: #868e96; |
167 | } |
168 | .top-tip { |
169 | text-align: center; |
170 | display: block; |
171 | margin-bottom: 10px; |
172 | font-size: 14px; |
173 | } |
174 | main { margin: 0 auto; max-width: 40rem; } |
175 | main article:first-child { border-radius: 3px 3px 0 0; } |
176 | main article:last-child { border-radius: 0 0 3px 3px; } |
177 | article { |
178 | background-color: white; |
179 | padding: 20px; |
180 | box-shadow: 0 1px 3px #949494; |
181 | position: relative; |
182 | } |
183 | .top-right { position: absolute; top: 20px; right: 20px; } |
184 | article > header { margin-bottom: 20px; } |
185 | article > header > figure { |
186 | margin: 0; display: flex; |
187 | } |
188 | article > header > figure > img { |
189 | border-radius: 2px; margin-right: 10px; |
190 | } |
191 | article > header > figure > figcaption { |
192 | display: flex; flex-direction: column; justify-content: space-around; |
193 | } |
194 | .ssb-avatar-name { font-size: 1.2em; font-weight: bold; } |
195 | time a { color: #868e96; } |
196 | .ssb-avatar-name, time a { |
197 | text-decoration: none; |
198 | } |
199 | .ssb-avatar-name:hover, time:hover a { |
200 | text-decoration: underline; |
201 | } |
202 | section p { line-height: 1.45em; } |
203 | section p img { |
204 | max-width: 100%; |
205 | max-height: 50vh; |
206 | margin: 0 auto; |
207 | } |
208 | .status { |
209 | font-style: italic; |
210 | } |
211 | |
212 | code { |
213 | display: inline; |
214 | padding: 2px 5px; |
215 | font-weight: 600; |
216 | background-color: #e9ecef; |
217 | border-radius: 3px; |
218 | color: #495057; |
219 | } |
220 | blockquote { |
221 | padding-left: 1.2em; |
222 | margin: 0; |
223 | color: #868e96; |
224 | border-left: 5px solid #ced4da; |
225 | } |
226 | pre { |
227 | background-color: #212529; |
228 | color: #ced4da; |
229 | font-weight: bold; |
230 | padding: 5px; |
231 | border-radius: 3px; |
232 | position: relative; |
233 | } |
234 | pre::before { |
235 | content: "METADATA"; |
236 | position: absolute; |
237 | top: -7px; |
238 | left: 0px; |
239 | background-color: #212529; |
240 | padding: 2px 4px 0; |
241 | border-radius: 2px; |
242 | font-family: "Helvetica Neue", "Calibri Light", Roboto, sans-serif; |
243 | font-size: 9px; |
244 | } |
245 | .call-to-action { |
246 | display: block; |
247 | margin: 0 auto; |
248 | width: 13em; |
249 | text-align: center; |
250 | text-decoration: none; |
251 | margin-top: 20px; |
252 | margin-bottom: 60px; |
253 | background-color: #5c7cfa; |
254 | padding: 15px 0; |
255 | color: #edf2ff; |
256 | border-radius: 3px; |
257 | border-bottom: 3px solid #3b5bdb; |
258 | } |
259 | .call-to-action:hover { |
260 | background-color: #748ffc; |
261 | border-bottom: 3px solid #4c6ef5; |
262 | } |
263 | </style> |
264 | `; |
265 | |
266 | function wrapJSON() { |
267 | var first = true; |
268 | return pull(pull.map(JSON.stringify), join(","), wrap("[", "]")); |
269 | } |
270 | |
271 | function wrapJSEmbed(opts) { |
272 | return pull( |
273 | wrap('<link rel=stylesheet href="' + opts.base + 'static/base.css">', ""), |
274 | pull.map(docWrite), |
275 | opts.base_token && rewriteBase(new RegExp(opts.base_token, "g")) |
276 | ); |
277 | } |
278 | |
279 | function rewriteBase(token) { |
280 | // detect the origin of the script and rewrite the js/html to use it |
281 | return pull( |
282 | replace(token, '" + SSB_VIEWER_ORIGIN + "/'), |
283 | wrap( |
284 | "var SSB_VIEWER_ORIGIN = (function () {" + |
285 | 'var scripts = document.getElementsByTagName("script")\n' + |
286 | "var script = scripts[scripts.length-1]\n" + |
287 | "if (!script) return location.origin\n" + |
288 | 'return script.src.replace(/\\/%.*$/, "")\n' + |
289 | "}())\n", |
290 | "" |
291 | ) |
292 | ); |
293 | } |
294 | |
295 | function join(delim) { |
296 | var first = true; |
297 | return pull.map(function(val) { |
298 | if (!first) return delim + String(val); |
299 | first = false; |
300 | return val; |
301 | }); |
302 | } |
303 | |
304 | function replace(re, rep) { |
305 | return pull.map(function(val) { |
306 | return String(val).replace(re, rep); |
307 | }); |
308 | } |
309 | |
310 | function docWrite(str) { |
311 | return "document.write(" + JSON.stringify(str) + ")\n"; |
312 | } |
313 | |
314 | function renderMsg(opts, msg) { |
315 | var c = msg.value.content || {}; |
316 | var name = encodeURIComponent(msg.key); |
317 | return h('article#' + name, |
318 | h('header', |
319 | h('figure', |
320 | h('img', { alt: '', |
321 | src: opts.img_base + msg.author.image, |
322 | height: 50, width: 50 }), |
323 | h('figcaption', |
324 | h('a.ssb-avatar-name', |
325 | { href: opts.base + escape(msg.value.author) }, |
326 | msg.author.name), |
327 | msgTimestamp(msg, opts.base + name)))), |
328 | render(opts, c)).outerHTML; |
329 | } |
330 | |
331 | function msgTimestamp(msg, link) { |
332 | var date = new Date(msg.value.timestamp); |
333 | var isoStr = date.toISOString(); |
334 | return h('time.ssb-timestamp', |
335 | { datetime: isoStr }, |
336 | h('a', |
337 | { href: link, |
338 | title: isoStr }, |
339 | formatDate(date))); |
340 | } |
341 | |
342 | function formatDate(date) { |
343 | return htime(date); |
344 | } |
345 | |
346 | function render(opts, c) { |
347 | var base = opts.base; |
348 | if (c.type === "post") { |
349 | var channel = c.channel |
350 | ? h('div.top-right', |
351 | h('a', |
352 | { href: base + 'channel/' + c.channel }, |
353 | '#' + c.channel)) |
354 | : ""; |
355 | return [channel, renderPost(opts, c)]; |
356 | } else if (c.type == "vote" && c.vote.expression == "Dig") { |
357 | var channel = c.channel |
358 | ? [' in ', |
359 | h('a', |
360 | { href: base + 'channel/' + c.channel }, |
361 | '#' + c.channel)] |
362 | : ""; |
363 | var linkedText = "this"; |
364 | if (typeof c.vote.linkedText != "undefined") |
365 | linkedText = c.vote.linkedText.substring(0, 75); |
366 | return h('span.status', |
367 | ['Liked ', |
368 | h('a', { href: base + c.vote.link }, linkedText), |
369 | channel]); |
370 | } else if (c.type == "vote") { |
371 | var linkedText = "this"; |
372 | if (typeof c.vote.linkedText != "undefined") |
373 | linkedText = c.vote.linkedText.substring(0, 75); |
374 | return h('span.status', |
375 | ['Voted ', |
376 | h('a', { href: base + c.vote.link }, linkedText)]); |
377 | } else if (c.type == "contact" && c.following) { |
378 | var name = c.contact; |
379 | if (typeof c.contactAbout != "undefined") |
380 | name = c.contactAbout.name; |
381 | return h('span.status', |
382 | ['Followed ', |
383 | h('a', { href: base + c.contact }, name)]); |
384 | } else if (c.type == "contact" && !c.following) { |
385 | var name = c.contact; |
386 | if (typeof c.contactAbout != "undefined") |
387 | name = c.contactAbout.name; |
388 | return h('span.status', |
389 | ['Unfollowed ', |
390 | h('a', { href: base + c.contact }, name)]); |
391 | } else if (typeof c == "string") { |
392 | return h('span.status', 'Wrote something private') |
393 | } |
394 | else if (c.type == "about") { |
395 | return [h('span.status', 'Changed something in about'), |
396 | renderDefault(c)]; |
397 | } |
398 | else if (c.type == "issue") { |
399 | return [h('span.status', |
400 | "Created a git issue" + |
401 | (c.repoName != undefined ? " in repo " + c.repoName : ""), |
402 | renderPost(opts, c))]; |
403 | } |
404 | else if (c.type == "git-repo") { |
405 | return h('span.status', |
406 | "Created a git repo " + c.name); |
407 | } |
408 | else if (c.type == "git-update") { |
409 | var s = h('span.status'); |
410 | s.innerHTML = "Did a git update " + |
411 | (c.repoName != undefined ? " in repo " + c.repoName : "") + |
412 | '<br>' + |
413 | (c.commits != undefined ? |
414 | c.commits.map(com => { return "-" +com.title; }).join('<br>') : ""); |
415 | return s; |
416 | } |
417 | else if (c.type == "ssb-dns") { |
418 | return [h('span.status', 'Updated DNS'), renderDefault(c)]; |
419 | } |
420 | else if (c.type == "pub") { |
421 | return h('span.status', 'Connected to the pub ' + c.address.host); |
422 | } |
423 | else if (c.type == "channel" && c.subscribed) |
424 | return h('span.status', |
425 | 'Subscribed to channel ', |
426 | h('a', |
427 | { href: base + 'channel/' + c.channel }, |
428 | '#' + c.channel)); |
429 | else if (c.type == "channel" && !c.subscribed) |
430 | return h('span.status', |
431 | 'Unsubscribed from channel ', |
432 | h('a', |
433 | { href: base + 'channel/' + c.channel }, |
434 | '#' + c.channel)) |
435 | else return renderDefault(c); |
436 | } |
437 | |
438 | function renderPost(opts, c) { |
439 | opts.mentions = {}; |
440 | if (Array.isArray(c.mentions)) { |
441 | c.mentions.forEach(function (link) { |
442 | if (link && link.name && link.link) |
443 | opts.mentions[link.name] = link.link; |
444 | }); |
445 | } |
446 | var s = h('section'); |
447 | s.innerHTML = marked(String(c.text), opts.marked); |
448 | return s; |
449 | } |
450 | |
451 | function renderDefault(c) { |
452 | return h('pre', JSON.stringify(c, 0, 2)); |
453 | } |
454 | |
455 | function renderShowAll(showAll, url) { |
456 | if (showAll) |
457 | return ''; |
458 | else |
459 | return '<br>' + h('a', { href : url + '?showAll' }, 'Show whole feed').outerHTML; |
460 | } |
461 |
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