git ssb

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var path = require('path');
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var pull = require("pull-stream");
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var marked = require("ssb-marked");
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var htime = require("human-time");
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var emojis = require("emoji-named-characters");
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var cat = require("pull-cat");
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var emojiDir = path.join(require.resolve("emoji-named-characters"), "../pngs");
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exports.wrapPage = wrapPage;
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exports.MdRenderer = MdRenderer;
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exports.renderEmoji = renderEmoji;
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exports.formatMsgs = formatMsgs;
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exports.renderThread = renderThread;
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exports.renderAbout = renderAbout;
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exports.renderItem = renderItem;
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exports.wrapRss = wrapRss;
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exports.renderRssContent = renderRssContent;
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function MdRenderer(opts) {
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  marked.Renderer.call(this, {});
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  this.opts = opts;
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}
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MdRenderer.prototype = new marked.Renderer();
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MdRenderer.prototype.urltransform = function(href) {
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  if (!href) return false;
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  switch (href[0]) {
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    case "#":
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      return this.opts.base + "channel/" + href.slice(1);
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    case "%":
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      return this.opts.msg_base + encodeURIComponent(href);
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    case "@":
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      return this.opts.feed_base + encodeURIComponent(href);
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    case "&":
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      return this.opts.blob_base + encodeURIComponent(href);
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  }
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  if (href.indexOf("javascript:") === 0) return false;
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  return href;
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};
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MdRenderer.prototype.image = function(href, title, text) {
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  return (
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    '<img src="' +
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    this.opts.img_base +
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    escape(href) +
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    '"' +
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    ' alt="' +
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    text +
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    '"' +
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    (title ? ' title="' + title + '"' : "") +
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    (this.options.xhtml ? "/>" : ">")
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  );
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};
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function renderEmoji(emoji) {
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  var opts = this.renderer.opts;
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  return emoji in emojis
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    ? '<img src="' +
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        opts.emoji_base +
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        escape(emoji) +
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        '.png"' +
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        ' alt=":' +
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        escape(emoji) +
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        ':"' +
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        ' title=":' +
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        escape(emoji) +
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        ':"' +
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        ' class="ssb-emoji" height="16" width="16">'
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    : ":" + emoji + ":";
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}
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function escape(str) {
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  return String(str)
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    .replace(/&/g, "&amp;")
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    .replace(/</g, "&lt;")
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    .replace(/>/g, "&gt;")
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    .replace(/"/g, "&quot;");
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}
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function formatMsgs(id, ext, opts) {
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  switch (ext || "html") {
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    case "html":
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      return pull(renderThread(opts), wrapPage(id));
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    case "js":
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      return pull(renderThread(opts), wrapJSEmbed(opts));
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    case "json":
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      return wrapJSON();
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    case "rss":
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      return pull(renderItem(opts), wrapRss(id, opts));
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    default:
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      return null;
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  }
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}
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function wrap(before, after) {
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  return function(read) {
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    return cat([pull.once(before), read, pull.once(after)]);
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  };
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}
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function renderAbout(opts, about, showAllHTML = "") {
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  return pull(
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    pull.map(renderMsg.bind(this, opts)),
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    wrap(
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      '<span class="top-tip">You are reading content from ' +
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        '<a href="https://www.scuttlebutt.nz">Scuttlebutt</a>' +
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      '</span>' +
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      '<main>' +
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      '<article><header><figure>' +
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      '<img src="' + opts.img_base + escape(about.image) + '" ' +
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            'height="200" width="200"><figcaption>' +
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	    'Feed of ' + about.name + '<br/>' +
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	    (about.description != undefined ? 
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	     marked(about.description, opts.marked) : '') +
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	    '</figcaption></figure></header></article>', 
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      showAllHTML + '</main>' +
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      '<a class="call-to-action" href="https://www.scuttlebutt.nz">' +
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        'Join Scuttlebutt now' +
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      '</a>'
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    )
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  );
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}
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function renderThread(opts, showAllHTML = "") {
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  return pull(
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    pull.map(renderMsg.bind(this, opts)),
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    wrap(
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      '<span class="top-tip">You are reading content from ' +
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        '<a href="https://www.scuttlebutt.nz">Scuttlebutt</a>' +
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      '</span>' +
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      '<main>',
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      showAllHTML + '</main>' +
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      '<a class="call-to-action" href="https://www.scuttlebutt.nz">' +
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        'Join Scuttlebutt now' +
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      '</a>'
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    )
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  );
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}
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function renderItem(opts) {
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  return pull(
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    pull.map(renderRss.bind(this, opts))
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  );
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}
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function wrapPage(id) {
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  return wrap(
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    "<!doctype html><html><head>" +
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      "<meta charset=utf-8>" +
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      "<title>" +
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      id + " | ssb-viewer" +
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      "</title>" +
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      '<meta name=viewport content="width=device-width,initial-scale=1">' +
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      styles +
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      "</head><body>",
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    "</body></html>"
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  );
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}
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function wrapRss(id, opts) {
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  return wrap(
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    '<?xml version="1.0" encoding="UTF-8" ?>' +
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    '<rss version="2.0">' +
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      '<channel>' +
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        '<title>' + id + ' | ssb-viewer</title>',
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      '</channel>'+
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    '</rss>'
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  );
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}
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var styles = `
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  <style>
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    html { background-color: #f1f3f5; }
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    body {
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      color: #212529;
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      font-family: "Helvetica Neue", "Calibri Light", Roboto, sans-serif;
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      -webkit-font-smoothing: antialiased;
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      -moz-osx-font-smoothing: grayscale;
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      letter-spacing: 0.02em;
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      padding-top: 30px;
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      padding-bottom: 50px;
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    }
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    a { color: #364fc7; }
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    .top-tip, .top-tip a {
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      color: #868e96;
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    }
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    .top-tip {
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      text-align: center;
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      display: block;
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      margin-bottom: 10px;
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      font-size: 14px;
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    }
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    main { margin: 0 auto; max-width: 40rem; }
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    main article:first-child { border-radius: 3px 3px 0 0; }
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    main article:last-child { border-radius: 0 0 3px 3px; }
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    article {
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      background-color: white;
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      padding: 20px;
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      box-shadow: 0 1px 3px #949494;
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      position: relative;
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    }
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    .top-right { position: absolute; top: 20px; right: 20px; }
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    article > header { margin-bottom: 20px; }
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    article > header > figure {
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      margin: 0; display: flex;
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    }
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    article > header > figure > img {
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      border-radius: 2px; margin-right: 10px;
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    }
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    article > header > figure > figcaption {
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      display: flex; flex-direction: column; justify-content: space-around;
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    }
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    .ssb-avatar-name { font-size: 1.2em; font-weight: bold; }
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    time a { color: #868e96; }
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    .ssb-avatar-name, time a {
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      text-decoration: none;
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    }
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    .ssb-avatar-name:hover, time:hover a {
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      text-decoration: underline;
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    }
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    section p { line-height: 1.45em; }
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    section p img {
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      max-width: 100%;
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      max-height: 50vh;
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      margin: 0 auto;
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    }
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    .status {
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      font-style: italic;
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    }
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    code {
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      display: inline;
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      padding: 2px 5px;
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      font-weight: 600;
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      background-color: #e9ecef;
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      border-radius: 3px;
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      color: #495057;
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    }
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    blockquote {
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      padding-left: 1.2em;
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      margin: 0;
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      color: #868e96;
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      border-left: 5px solid #ced4da;
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    }
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    pre {
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      background-color: #212529;
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      color: #ced4da;
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      font-weight: bold;
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      padding: 5px;
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      border-radius: 3px;
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      position: relative;
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    }
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    pre::before {
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      content: "METADATA";
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      position: absolute;
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      top: -7px;
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      left: 0px;
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      background-color: #212529;
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      padding: 2px 4px 0;
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      border-radius: 2px;
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      font-family: "Helvetica Neue", "Calibri Light", Roboto, sans-serif;
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      font-size: 9px;
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    }
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    .call-to-action {
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      display: block;
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      margin: 0 auto;
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      width: 13em;
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      text-align: center;
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      text-decoration: none;
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      margin-top: 20px;
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      margin-bottom: 60px;
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      background-color: #5c7cfa;
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      padding: 15px 0;
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      color: #edf2ff;
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      border-radius: 3px;
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      border-bottom: 3px solid #3b5bdb;
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    }
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    .call-to-action:hover {
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      background-color: #748ffc;
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      border-bottom: 3px solid #4c6ef5;
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    }
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  </style>
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`;
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function wrapJSON() {
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  var first = true;
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  return pull(pull.map(JSON.stringify), join(","), wrap("[", "]"));
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}
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function wrapJSEmbed(opts) {
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  return pull(
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    wrap('<link rel=stylesheet href="' + opts.base + 'static/base.css">', ""),
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    pull.map(docWrite),
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    opts.base_token && rewriteBase(new RegExp(opts.base_token, "g"))
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  );
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}
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function rewriteBase(token) {
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  // detect the origin of the script and rewrite the js/html to use it
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  return pull(
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    replace(token, '" + SSB_VIEWER_ORIGIN + "/'),
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    wrap(
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      "var SSB_VIEWER_ORIGIN = (function () {" +
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        'var scripts = document.getElementsByTagName("script")\n' +
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        "var script = scripts[scripts.length-1]\n" +
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        "if (!script) return location.origin\n" +
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        'return script.src.replace(/\\/%.*$/, "")\n' +
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        "}())\n",
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      ""
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    )
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  );
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}
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function join(delim) {
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  var first = true;
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  return pull.map(function(val) {
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    if (!first) return delim + String(val);
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    first = false;
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    return val;
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  });
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}
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function replace(re, rep) {
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  return pull.map(function(val) {
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    return String(val).replace(re, rep);
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  });
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}
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function docWrite(str) {
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  return "document.write(" + JSON.stringify(str) + ")\n";
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}
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function renderMsg(opts, msg) {
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  var c = msg.value.content || {};
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  var name = encodeURIComponent(msg.key);
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  return (
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    '<article id="' +
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    name +
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    '">' +
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      '<header>' +
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        '<figure>' +
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          '<img alt="" ' +
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            'src="' + opts.img_base + escape(msg.author.image) + '" ' +
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            'height="50" width="50">' +
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          '<figcaption>' +
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            '<a class="ssb-avatar-name"' +
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            ' href="' + opts.base +
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            escape(msg.value.author) +
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            '"' +
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            ">" + msg.author.name + "</a>" +
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            msgTimestamp(msg, name) +
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          '</figcaption>' +
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        '</figure>' +
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      '</header>' +
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      render(opts, c) +
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    "</article>"
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  );
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}
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function renderRssContent(opts, c) {
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  var base = opts.base;
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  if (c.type === "post") {
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    return (c.channel ? `Posted in #${c.channel}:\n\n` : '') + c.text;
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  } else if (c.type == "vote" && c.vote.expression == "Dig") {
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    var linkedText = "a post";
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    if (typeof c.vote.linkedText != "undefined") {
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      linkedText = c.vote.linkedText.substring(0, 75);
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    }
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    return `Liked ${linkedText}`;
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  } else if (c.type == "vote") {
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    var linkedText = "a post";
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    if (typeof c.vote.linkedText != "undefined") {
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      linkedText = c.vote.linkedText.substring(0, 75);
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    }
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    return `Voted ${linkedText}`;
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  } else if (c.type == "contact" && c.following) {
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    var name = c.contact;
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    if (typeof c.contactAbout != "undefined") {
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      name = c.contactAbout.name;
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    }
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    return `Followed ${name}`;
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  } else if (c.type == "contact" && !c.following) {
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    var name = c.contact;
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    if (typeof c.contactAbout != "undefined") {
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      name = c.contactAbout.name;
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    }
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    return `Unfollowed ${name}`;
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  } else if (typeof c == "string") {
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    // Don't show private messages in RSS.
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  }
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  else if (c.type == "about") {
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    // Don't show about messages in RSS.
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  }
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  else if (c.type == "issue") {
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    return `Created a git issue ${(c.repoName != undefined ? " in repo " + c.repoName : "")}`;
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  }
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  else if (c.type == "git-update") {
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    return `Did a git update ${(c.repoName != undefined ? " in repo " + c.repoName : "")}
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    ${(c.commits != undefined ? c.commits.map(com => { return "-" +com.title; }).join("\n") : "")}
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    `;
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  }
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  else if (c.type == "ssb-dns") {
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    // Don't show for RSS.
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  }
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  else if (c.type == "pub") {
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    return `Connected to the pub ${c.address.host}`;
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  }
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  else if (c.type == "channel" && c.subscribed) {
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    return `Subscribed to channel #${c.channel}`;
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  }
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  else if (c.type == "channel" && !c.subscribed) {
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    return `Unsubscribed from channel #${c.channel}`;
424
  }
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426
}
427
428
function renderRss(opts, msg) {
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  var c = msg.value.content || {};
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  var name = encodeURIComponent(msg.key);
431
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  let content = renderRssContent(opts, c);
433
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  if (!content) {
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    return null;
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  }
437
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  return (
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    '<item>' +
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      '<title>' + msg.author.name + '</title>' +
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      '<description><![CDATA[' + content + ']]></description>' +
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      '<link>' + opts.base + escape(name) + '</link>' +
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      '<pubDate>' + new Date(msg.value.timestamp).toUTCString() + '</pubDate>' +
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      '<guid>' + msg.key + '</guid>' +
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    '</item>'
446
  );
447
}
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function msgTimestamp(msg, name) {
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  var date = new Date(msg.value.timestamp);
451
  var isoStr = date.toISOString();
452
  return (
453
    '<time class="ssb-timestamp" datetime="' + isoStr + '">' +
454
      '<a ' +
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      'href="#' + name + '" ' +
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      'title="' + isoStr + '" ' +
457
      '>' + formatDate(date) + '</a>' +
458
    '</time>'
459
  );
460
}
461
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function formatDate(date) {
463
  // return date.toISOString().replace('T', ' ')
464
  return htime(date);
465
}
466
467
function render(opts, c) {
468
  var base = opts.base;
469
  if (c.type === "post") {
470
    var channel = c.channel
471
      ? '<div class="top-right"><a href="' + base + 'channel/' + c.channel + '">#' + c.channel + "</a></div>"
472
      : "";
473
    return channel + renderPost(opts, c);
474
  } else if (c.type == "vote" && c.vote.expression == "Dig") {
475
    var channel = c.channel
476
      ? ' in <a href="' + base + 'channel/' + c.channel + '">#' + c.channel + "</a>"
477
      : "";
478
    var linkedText = "this";
479
    if (typeof c.vote.linkedText != "undefined")
480
      linkedText = c.vote.linkedText.substring(0, 75);
481
    return ('<span class="status">' +
482
      'Liked ' +
483
      '<a href="' + base +
484
      c.vote.link +
485
      '">' +
486
      linkedText +
487
      "</a>" +
488
      channel +
489
      '</span>'
490
    );
491
  } else if (c.type == "vote") {
492
    var linkedText = "this";
493
    if (typeof c.vote.linkedText != "undefined")
494
      linkedText = c.vote.linkedText.substring(0, 75);
495
    return '<span class="status">' +
496
      'Voted <a href="' + base + c.vote.link + '">' + linkedText + "</a>" +
497
      '</span>';
498
  } else if (c.type == "contact" && c.following) {
499
    var name = c.contact;
500
    if (typeof c.contactAbout != "undefined") name = c.contactAbout.name;
501
    return '<span class="status">' +
502
      'Followed <a href="' + base + c.contact + '">' + name + "</a>" +
503
      '</span>';
504
  } else if (c.type == "contact" && !c.following) {
505
    var name = c.contact;
506
    if (typeof c.contactAbout != "undefined") name = c.contactAbout.name;
507
    return '<span class="status">' +
508
      'Unfollowed <a href="' + base + c.contact + '">' + name + "</a>" +
509
      '</span>';
510
  } else if (typeof c == "string") {
511
    return '<span class="status">' +
512
      "Wrote something private" +
513
      '</span>';
514
  }
515
  else if (c.type == "about") {
516
    return '<span class="status">' +
517
      "Changed something in about" +
518
      '</span>' +
519
      renderDefault(c);
520
  }
521
  else if (c.type == "issue") {
522
    return '<span class="status">' +
523
      "Created a git issue" + (c.repoName != undefined ? " in repo " + c.repoName : "") + renderPost(opts, c) +
524
      '</span>';
525
  }
526
  else if (c.type == "git-update") {
527
    return '<span class="status">' +
528
      "Did a git update " + (c.repoName != undefined ? " in repo " + c.repoName : "") +
529
      "<br/>" +
530
     (c.commits != undefined ? c.commits.map(com => { return "-" +com.title; }).join("<br/>") : "") +
531
      '</span>'
532
  }
533
  else if (c.type == "ssb-dns") {
534
    return '<span class="status">' +
535
      "Updated DNS" +
536
      '</span>' +
537
      renderDefault(c);
538
  }
539
  else if (c.type == "pub") {
540
    return '<span class="status">' +
541
      "Connected to the pub " + c.address.host +
542
      '</span>'
543
  }
544
  else if (c.type == "channel" && c.subscribed)
545
    return '<span class="status">' +
546
      'Subscribed to channel <a href="' + base + 'channel/' +
547
      c.channel +
548
      '">#' +
549
      c.channel +
550
      "</a>" +
551
      '</span>';
552
  else if (c.type == "channel" && !c.subscribed)
553
    return '<span class="status">' +
554
      'Unsubscribed from channel <a href="' + base + 'channel/' +
555
      c.channel +
556
      '">#' +
557
      c.channel +
558
      "</a>" +
559
      '</span>';
560
  else return renderDefault(c);
561
}
562
563
function renderPost(opts, c) {
564
  return '<section>' + marked(String(c.text), opts.marked) + "</section>";
565
}
566
567
function renderDefault(c) {
568
  return "<pre>" + JSON.stringify(c, 0, 2) + "</pre>";
569
}
570