Files: ee9c39f0499ced79d136914439eba10ccec934df / render.js
13071 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 = render(opts, c); |
| 358 | |
| 359 | if (!content) { |
| 360 | return null; |
| 361 | } |
| 362 | |
| 363 | return ( |
| 364 | '<item>' + |
| 365 | '<title>' + msg.author.name + ' | ' + c.type + '</title>' + |
| 366 | '<description><![CDATA[' + content + ']]></description>' + |
| 367 | '<link>' + opts.base + escape(name) + '</link>' + |
| 368 | '<pubDate>' + new Date(msg.value.timestamp).toUTCString() + '</pubDate>' + |
| 369 | '<guid>' + msg.key + '</guid>' + |
| 370 | '</item>' |
| 371 | ); |
| 372 | } |
| 373 | |
| 374 | function msgTimestamp(msg, link) { |
| 375 | var date = new Date(msg.value.timestamp); |
| 376 | var isoStr = date.toISOString(); |
| 377 | return h('time.ssb-timestamp', |
| 378 | { datetime: isoStr }, |
| 379 | h('a', |
| 380 | { href: link, |
| 381 | title: isoStr }, |
| 382 | formatDate(date))); |
| 383 | } |
| 384 | |
| 385 | function formatDate(date) { |
| 386 | return htime(date); |
| 387 | } |
| 388 | |
| 389 | function render(opts, c) { |
| 390 | var base = opts.base; |
| 391 | if (c.type === "post") { |
| 392 | var channel = c.channel |
| 393 | ? h('div.top-right', |
| 394 | h('a', |
| 395 | { href: base + 'channel/' + c.channel }, |
| 396 | '#' + c.channel)) |
| 397 | : ""; |
| 398 | return [channel, renderPost(opts, c)]; |
| 399 | } else if (c.type == "vote" && c.vote.expression == "Dig") { |
| 400 | var channel = c.channel |
| 401 | ? [' in ', |
| 402 | h('a', |
| 403 | { href: base + 'channel/' + c.channel }, |
| 404 | '#' + c.channel)] |
| 405 | : ""; |
| 406 | var linkedText = "this"; |
| 407 | if (typeof c.vote.linkedText != "undefined") |
| 408 | linkedText = c.vote.linkedText.substring(0, 75); |
| 409 | return h('span.status', |
| 410 | ['Liked ', |
| 411 | h('a', { href: base + c.vote.link }, linkedText), |
| 412 | channel]); |
| 413 | } else if (c.type == "vote") { |
| 414 | var linkedText = "this"; |
| 415 | if (typeof c.vote.linkedText != "undefined") |
| 416 | linkedText = c.vote.linkedText.substring(0, 75); |
| 417 | return h('span.status', |
| 418 | ['Voted ', |
| 419 | h('a', { href: base + c.vote.link }, linkedText)]); |
| 420 | } else if (c.type == "contact" && c.following) { |
| 421 | var name = c.contact; |
| 422 | if (typeof c.contactAbout != "undefined") |
| 423 | name = c.contactAbout.name; |
| 424 | return h('span.status', |
| 425 | ['Followed ', |
| 426 | h('a', { href: base + c.contact }, name)]); |
| 427 | } else if (c.type == "contact" && !c.following) { |
| 428 | var name = c.contact; |
| 429 | if (typeof c.contactAbout != "undefined") |
| 430 | name = c.contactAbout.name; |
| 431 | return h('span.status', |
| 432 | ['Unfollowed ', |
| 433 | h('a', { href: base + c.contact }, name)]); |
| 434 | } else if (typeof c == "string") { |
| 435 | return h('span.status', 'Wrote something private') |
| 436 | } |
| 437 | else if (c.type == "about") { |
| 438 | return [h('span.status', 'Changed something in about'), |
| 439 | renderDefault(c)]; |
| 440 | } |
| 441 | else if (c.type == "issue") { |
| 442 | return [h('span.status', |
| 443 | "Created a git issue" + |
| 444 | (c.repoName != undefined ? " in repo " + c.repoName : ""), |
| 445 | renderPost(opts, c))]; |
| 446 | } |
| 447 | else if (c.type == "git-update") { |
| 448 | return h('span.status', |
| 449 | "Did a git update " + |
| 450 | (c.repoName != undefined ? " in repo " + c.repoName : "") + |
| 451 | '<br>' + |
| 452 | (c.commits != undefined ? |
| 453 | c.commits.map(com => { return "-" +com.title; }).join('<br>') : "")); |
| 454 | } |
| 455 | else if (c.type == "ssb-dns") { |
| 456 | return [h('span.status', 'Updated DNS'), renderDefault(c)]; |
| 457 | } |
| 458 | else if (c.type == "pub") { |
| 459 | return h('span.status', 'Connected to the pub ' + c.address.host); |
| 460 | } |
| 461 | else if (c.type == "channel" && c.subscribed) |
| 462 | return h('span.status', |
| 463 | 'Subscribed to channel ', |
| 464 | h('a', |
| 465 | { href: base + 'channel/' + c.channel }, |
| 466 | '#' + c.channel)); |
| 467 | else if (c.type == "channel" && !c.subscribed) |
| 468 | return h('span.status', |
| 469 | 'Unsubscribed from channel ', |
| 470 | h('a', |
| 471 | { href: base + 'channel/' + c.channel }, |
| 472 | '#' + c.channel)) |
| 473 | else return renderDefault(c); |
| 474 | } |
| 475 | |
| 476 | function renderPost(opts, c) { |
| 477 | opts.mentions = {}; |
| 478 | if (Array.isArray(c.mentions)) { |
| 479 | c.mentions.forEach(function (link) { |
| 480 | if (link && link.name && link.link) |
| 481 | opts.mentions[link.name] = link.link; |
| 482 | }); |
| 483 | } |
| 484 | var s = h('section'); |
| 485 | s.innerHTML = marked(String(c.text), opts.marked); |
| 486 | return s; |
| 487 | } |
| 488 | |
| 489 | function renderDefault(c) { |
| 490 | return h('pre', JSON.stringify(c, 0, 2)); |
| 491 | } |
| 492 | |
| 493 | function renderShowAll(showAll, url) { |
| 494 | if (showAll) |
| 495 | return ''; |
| 496 | else |
| 497 | return '<br>' + h('a', { href : url + '?showAll' }, 'Show whole feed').outerHTML; |
| 498 | } |
| 499 |
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