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Tree: 8c420a8d3bd2ae01b8ecb8409e951c5fde1e0f8d

Files: 8c420a8d3bd2ae01b8ecb8409e951c5fde1e0f8d / render.js

12471 bytesRaw
1var path = require('path');
2var pull = require("pull-stream");
3var marked = require("ssb-marked");
4var htime = require("human-time");
5var emojis = require("emoji-named-characters");
6var cat = require("pull-cat");
7
8var emojiDir = path.join(require.resolve("emoji-named-characters"), "../pngs");
9
10exports.wrapPage = wrapPage;
11exports.MdRenderer = MdRenderer;
12exports.renderEmoji = renderEmoji;
13exports.formatMsgs = formatMsgs;
14exports.renderThread = renderThread;
15exports.renderAbout = renderAbout;
16
17function MdRenderer(opts) {
18  marked.Renderer.call(this, {});
19  this.opts = opts;
20}
21
22MdRenderer.prototype = new marked.Renderer();
23
24MdRenderer.prototype.urltransform = function(href) {
25  if (!href) return false;
26  switch (href[0]) {
27    case "#":
28      return this.opts.base + "channel/" + href.slice(1);
29    case "%":
30      return this.opts.msg_base + encodeURIComponent(href);
31    case "@":
32      return this.opts.feed_base + encodeURIComponent(href);
33    case "&":
34      return this.opts.blob_base + encodeURIComponent(href);
35  }
36  if (href.indexOf("javascript:") === 0) return false;
37  return href;
38};
39
40MdRenderer.prototype.image = function(href, title, text) {
41  return (
42    '<img src="' +
43    this.opts.img_base +
44    escape(href) +
45    '"' +
46    ' alt="' +
47    text +
48    '"' +
49    (title ? ' title="' + title + '"' : "") +
50    (this.options.xhtml ? "/>" : ">")
51  );
52};
53
54function renderEmoji(emoji) {
55  var opts = this.renderer.opts;
56  return emoji in emojis
57    ? '<img src="' +
58        opts.emoji_base +
59        escape(emoji) +
60        '.png"' +
61        ' alt=":' +
62        escape(emoji) +
63        ':"' +
64        ' title=":' +
65        escape(emoji) +
66        ':"' +
67        ' class="ssb-emoji" height="16" width="16">'
68    : ":" + emoji + ":";
69}
70
71function escape(str) {
72  return String(str)
73    .replace(/&/g, "&amp;")
74    .replace(/</g, "&lt;")
75    .replace(/>/g, "&gt;")
76    .replace(/"/g, "&quot;");
77}
78
79function formatMsgs(id, ext, opts) {
80  switch (ext || "html") {
81    case "html":
82      return pull(renderThread(opts), wrapPage(id));
83    case "js":
84      return pull(renderThread(opts), wrapJSEmbed(opts));
85    case "json":
86      return wrapJSON();
87    default:
88      return null;
89  }
90}
91
92function wrap(before, after) {
93  return function(read) {
94    return cat([pull.once(before), read, pull.once(after)]);
95  };
96}
97
98function renderAbout(opts, about, showAllHTML = "") {
99  return pull(
100    pull.map(renderMsg.bind(this, opts)),
101    wrap(
102      '<span class="top-tip">You are reading content from ' +
103        '<a href="https://www.scuttlebutt.nz">Scuttlebutt</a>' +
104      '</span>' +
105      '<main>' +
106      '<article><header><figure>' +
107      '<img src="' + opts.img_base + escape(about.image) + '" ' +
108            'height="200" width="200"><figcaption>' +
109	    'Feed of ' + about.name + '<br/>' +
110	    (about.description != undefined ? 
111	     marked(about.description, opts.marked) : '') +
112	    '</figcaption></figure></header></article>', 
113
114      showAllHTML + '</main>' +
115      '<a class="call-to-action" href="https://www.scuttlebutt.nz">' +
116        'Join Scuttlebutt now' +
117      '</a>'
118    )
119  );
120}
121
122function renderThread(opts, showAllHTML = "") {
123  return pull(
124    pull.map(renderMsg.bind(this, opts)),
125    wrap(
126      '<span class="top-tip">You are reading content from ' +
127        '<a href="https://www.scuttlebutt.nz">Scuttlebutt</a>' +
128      '</span>' +
129      '<main>',
130
131      showAllHTML + '</main>' +
132      '<a class="call-to-action" href="https://www.scuttlebutt.nz">' +
133        'Join Scuttlebutt now' +
134      '</a>'
135    )
136  );
137}
138
139function wrapPage(id) {
140  return wrap(
141    "<!doctype html><html><head>" +
142      "<meta charset=utf-8>" +
143      "<title>" +
144      id + " | ssb-viewer" +
145      "</title>" +
146      '<meta name=viewport content="width=device-width,initial-scale=1">' +
147      styles +
148      "</head><body>",
149    "</body></html>"
150  );
151}
152
153var styles = `
154  <style>
155    html { background-color: #f1f3f5; }
156    body {
157      color: #212529;
158      font-family: "Helvetica Neue", "Calibri Light", Roboto, sans-serif;
159      -webkit-font-smoothing: antialiased;
160      -moz-osx-font-smoothing: grayscale;
161      letter-spacing: 0.02em;
162      padding-top: 30px;
163      padding-bottom: 50px;
164    }
165    a { color: #364fc7; }
166
167    .top-tip, .top-tip a {
168      color: #868e96;
169    }
170    .top-tip {
171      text-align: center;
172      display: block;
173      margin-bottom: 10px;
174      font-size: 14px;
175    }
176    main { margin: 0 auto; max-width: 40rem; }
177    main article:first-child { border-radius: 3px 3px 0 0; }
178    main article:last-child { border-radius: 0 0 3px 3px; }
179    article {
180      background-color: white;
181      padding: 20px;
182      box-shadow: 0 1px 3px #949494;
183      position: relative;
184    }
185    .top-right { position: absolute; top: 20px; right: 20px; }
186    article > header { margin-bottom: 20px; }
187    article > header > figure {
188      margin: 0; display: flex;
189    }
190    article > header > figure > img {
191      border-radius: 2px; margin-right: 10px;
192    }
193    article > header > figure > figcaption {
194      display: flex; flex-direction: column; justify-content: space-around;
195    }
196    .ssb-avatar-name { font-size: 1.2em; font-weight: bold; }
197    time a { color: #868e96; }
198    .ssb-avatar-name, time a {
199      text-decoration: none;
200    }
201    .ssb-avatar-name:hover, time:hover a {
202      text-decoration: underline;
203    }
204    section p { line-height: 1.45em; }
205    section p img {
206      max-width: 100%;
207      max-height: 50vh;
208      margin: 0 auto;
209    }
210    .status {
211      font-style: italic;
212    }
213
214    code {
215      display: inline;
216      padding: 2px 5px;
217      font-weight: 600;
218      background-color: #e9ecef;
219      border-radius: 3px;
220      color: #495057;
221    }
222    blockquote {
223      padding-left: 1.2em;
224      margin: 0;
225      color: #868e96;
226      border-left: 5px solid #ced4da;
227    }
228    pre {
229      background-color: #212529;
230      color: #ced4da;
231      font-weight: bold;
232      padding: 5px;
233      border-radius: 3px;
234      position: relative;
235    }
236    pre::before {
237      content: "METADATA";
238      position: absolute;
239      top: -7px;
240      left: 0px;
241      background-color: #212529;
242      padding: 2px 4px 0;
243      border-radius: 2px;
244      font-family: "Helvetica Neue", "Calibri Light", Roboto, sans-serif;
245      font-size: 9px;
246    }
247    .call-to-action {
248      display: block;
249      margin: 0 auto;
250      width: 13em;
251      text-align: center;
252      text-decoration: none;
253      margin-top: 20px;
254      margin-bottom: 60px;
255      background-color: #5c7cfa;
256      padding: 15px 0;
257      color: #edf2ff;
258      border-radius: 3px;
259      border-bottom: 3px solid #3b5bdb;
260    }
261    .call-to-action:hover {
262      background-color: #748ffc;
263      border-bottom: 3px solid #4c6ef5;
264    }
265  </style>
266`;
267
268function wrapJSON() {
269  var first = true;
270  return pull(pull.map(JSON.stringify), join(","), wrap("[", "]"));
271}
272
273function wrapJSEmbed(opts) {
274  return pull(
275    wrap('<link rel=stylesheet href="' + opts.base + 'static/base.css">', ""),
276    pull.map(docWrite),
277    opts.base_token && rewriteBase(new RegExp(opts.base_token, "g"))
278  );
279}
280
281function rewriteBase(token) {
282  // detect the origin of the script and rewrite the js/html to use it
283  return pull(
284    replace(token, '" + SSB_VIEWER_ORIGIN + "/'),
285    wrap(
286      "var SSB_VIEWER_ORIGIN = (function () {" +
287        'var scripts = document.getElementsByTagName("script")\n' +
288        "var script = scripts[scripts.length-1]\n" +
289        "if (!script) return location.origin\n" +
290        'return script.src.replace(/\\/%.*$/, "")\n' +
291        "}())\n",
292      ""
293    )
294  );
295}
296
297function join(delim) {
298  var first = true;
299  return pull.map(function(val) {
300    if (!first) return delim + String(val);
301    first = false;
302    return val;
303  });
304}
305
306function replace(re, rep) {
307  return pull.map(function(val) {
308    return String(val).replace(re, rep);
309  });
310}
311
312function docWrite(str) {
313  return "document.write(" + JSON.stringify(str) + ")\n";
314}
315
316function renderMsg(opts, msg) {
317  var c = msg.value.content || {};
318  var name = encodeURIComponent(msg.key);
319  return (
320    '<article id="' +
321    name +
322    '">' +
323      '<header>' +
324        '<figure>' +
325          '<img alt="" ' +
326            'src="' + opts.img_base + escape(msg.author.image) + '" ' +
327            'height="50" width="50">' +
328          '<figcaption>' +
329            '<a class="ssb-avatar-name"' +
330            ' href="' + opts.base +
331            escape(msg.value.author) +
332            '"' +
333            ">" + msg.author.name + "</a>" +
334            msgTimestamp(msg, name) +
335          '</figcaption>' +
336        '</figure>' +
337      '</header>' +
338      render(opts, c) +
339    "</article>"
340  );
341}
342
343function msgTimestamp(msg, name) {
344  var date = new Date(msg.value.timestamp);
345  var isoStr = date.toISOString();
346  return (
347    '<time class="ssb-timestamp" datetime="' + isoStr + '">' +
348      '<a ' +
349      'href="#' + name + '" ' +
350      'title="' + isoStr + '" ' +
351      '>' + formatDate(date) + '</a>' +
352    '</time>'
353  );
354}
355
356function formatDate(date) {
357  // return date.toISOString().replace('T', ' ')
358  return htime(date);
359}
360
361function render(opts, c) {
362  var base = opts.base;
363  if (c.type === "post") {
364    var channel = c.channel
365      ? '<div class="top-right"><a href="' + base + 'channel/' + c.channel + '">#' + c.channel + "</a></div>"
366      : "";
367    return channel + renderPost(opts, c);
368  } else if (c.type == "vote" && c.vote.expression == "Dig") {
369    var channel = c.channel
370      ? ' in <a href="' + base + 'channel/' + c.channel + '">#' + c.channel + "</a>"
371      : "";
372    var linkedText = "this";
373    if (typeof c.vote.linkedText != "undefined")
374      linkedText = c.vote.linkedText.substring(0, 75);
375    return ('<span class="status">' +
376      'Liked ' +
377      '<a href="' + base +
378      c.vote.link +
379      '">' +
380      linkedText +
381      "</a>" +
382      channel +
383      '</span>'
384    );
385  } else if (c.type == "vote") {
386    var linkedText = "this";
387    if (typeof c.vote.linkedText != "undefined")
388      linkedText = c.vote.linkedText.substring(0, 75);
389    return '<span class="status">' +
390      'Voted <a href="' + base + c.vote.link + '">' + linkedText + "</a>" +
391      '</span>';
392  } else if (c.type == "contact" && c.following) {
393    var name = c.contact;
394    if (typeof c.contactAbout != "undefined") name = c.contactAbout.name;
395    return '<span class="status">' +
396      'Followed <a href="' + base + c.contact + '">' + name + "</a>" +
397      '</span>';
398  } else if (c.type == "contact" && !c.following) {
399    var name = c.contact;
400    if (typeof c.contactAbout != "undefined") name = c.contactAbout.name;
401    return '<span class="status">' +
402      'Unfollowed <a href="' + base + c.contact + '">' + name + "</a>" +
403      '</span>';
404  } else if (typeof c == "string") {
405    return '<span class="status">' +
406      "Wrote something private" +
407      '</span>';
408  }
409  else if (c.type == "about") {
410    return '<span class="status">' +
411      "Changed something in about" +
412      '</span>' +
413      renderDefault(c);
414  }
415  else if (c.type == "issue") {
416    return '<span class="status">' +
417      "Created a git issue" + (c.repoName != undefined ? " in repo " + c.repoName : "") + renderPost(opts, c) +
418      '</span>';
419  }
420  else if (c.type == "git-update") {
421    return '<span class="status">' +
422      "Did a git update " + (c.repoName != undefined ? " in repo " + c.repoName : "") +
423      "<br/>" +
424     (c.commits != undefined ? c.commits.map(com => { return "-" +com.title; }).join("<br/>") : "") +
425      '</span>'
426  }
427  else if (c.type == "ssb-dns") {
428    return '<span class="status">' +
429      "Updated DNS" +
430      '</span>' +
431      renderDefault(c);
432  }
433  else if (c.type == "pub") {
434    return '<span class="status">' +
435      "Connected to the pub " + c.address.host +
436      '</span>'
437  }
438  else if (c.type == "channel" && c.subscribed)
439    return '<span class="status">' +
440      'Subscribed to channel <a href="' + base + 'channel/' +
441      c.channel +
442      '">#' +
443      c.channel +
444      "</a>" +
445      '</span>';
446  else if (c.type == "channel" && !c.subscribed)
447    return '<span class="status">' +
448      'Unsubscribed from channel <a href="' + base + 'channel/' +
449      c.channel +
450      '">#' +
451      c.channel +
452      "</a>" +
453      '</span>';
454  else return renderDefault(c);
455}
456
457function renderPost(opts, c) {
458  return '<section>' + marked(String(c.text), opts.marked) + "</section>";
459}
460
461function renderDefault(c) {
462  return "<pre>" + JSON.stringify(c, 0, 2) + "</pre>";
463}
464

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