Make an attempt at being able to render rss

2017-06-04 23:37:14 -07:00
parent 8c420a8d3b
commit 8ee270f04f
2 changed files with 149 additions and 22 deletions
@@ -13,6 +13,9 @@ exports.renderEmoji = renderEmoji;
 exports.formatMsgs = formatMsgs;
 exports.renderThread = renderThread;
 exports.renderAbout = renderAbout;
+exports.renderItem = renderItem;
+exports.wrapRss = wrapRss;
+exports.renderRssContent = renderRssContent;

 function MdRenderer(opts) {
  marked.Renderer.call(this, {});
@@ -84,6 +87,8 @@ function formatMsgs(id, ext, opts) {
      return pull(renderThread(opts), wrapJSEmbed(opts));
    case "json":
      return wrapJSON();
+    case "rss":
+      return pull(renderItem(opts), wrapRss(id, opts));
    default:
      return null;
  }
@@ -136,6 +141,12 @@ function renderThread(opts, showAllHTML = "") {
  );
 }

+function renderItem(opts) {
+  return pull(
+    pull.map(renderRss.bind(this, opts))
+  );
+}
+
 function wrapPage(id) {
  return wrap(
    "<!doctype html><html><head>" +
@@ -150,6 +161,18 @@ function wrapPage(id) {
  );
 }

+function wrapRss(id, opts) {
+  return wrap(
+    '<?xml version="1.0" encoding="UTF-8" ?>' +
+    '<rss version="2.0">' +
+      '<channel>' +
+        '<title>' + id + ' | ssb-viewer</title>',
+
+      '</channel>'+
+    '</rss>'
+  );
+}
+
 var styles = `
  <style>
    html { background-color: #f1f3f5; }
@@ -340,6 +363,89 @@ function renderMsg(opts, msg) {
  );
 }

+function renderRssContent(opts, c) {
+  var base = opts.base;
+  if (c.type === "post") {
+    return (c.channel ? `Posted in #${c.channel}:\n\n` : '') + c.text;
+  } else if (c.type == "vote" && c.vote.expression == "Dig") {
+    var linkedText = "a post";
+    if (typeof c.vote.linkedText != "undefined") {
+      linkedText = c.vote.linkedText.substring(0, 75);
+    }
+
+    return `Liked ${linkedText}`;
+  } else if (c.type == "vote") {
+    var linkedText = "a post";
+    if (typeof c.vote.linkedText != "undefined") {
+      linkedText = c.vote.linkedText.substring(0, 75);
+    }
+
+    return `Voted ${linkedText}`;
+  } else if (c.type == "contact" && c.following) {
+    var name = c.contact;
+    if (typeof c.contactAbout != "undefined") {
+      name = c.contactAbout.name;
+    }
+
+    return `Followed ${name}`;
+  } else if (c.type == "contact" && !c.following) {
+    var name = c.contact;
+    if (typeof c.contactAbout != "undefined") {
+      name = c.contactAbout.name;
+    }
+
+    return `Unfollowed ${name}`;
+  } else if (typeof c == "string") {
+    // Don't show private messages in RSS.
+  }
+  else if (c.type == "about") {
+    // Don't show about messages in RSS.
+  }
+  else if (c.type == "issue") {
+    return `Created a git issue ${(c.repoName != undefined ? " in repo " + c.repoName : "")}`;
+  }
+  else if (c.type == "git-update") {
+    return `Did a git update ${(c.repoName != undefined ? " in repo " + c.repoName : "")}
+    
+    ${(c.commits != undefined ? c.commits.map(com => { return "-" +com.title; }).join("\n") : "")}
+    `;
+  }
+  else if (c.type == "ssb-dns") {
+    // Don't show for RSS.
+  }
+  else if (c.type == "pub") {
+    return `Connected to the pub ${c.address.host}`;
+  }
+  else if (c.type == "channel" && c.subscribed) {
+    return `Subscribed to channel #${c.channel}`;
+  }
+  else if (c.type == "channel" && !c.subscribed) {
+    return `Unsubscribed from channel #${c.channel}`;
+  }
+
+}
+
+function renderRss(opts, msg) {
+  var c = msg.value.content || {};
+  var name = encodeURIComponent(msg.key);
+
+  let content = renderRssContent(opts, c);
+
+  if (!content) {
+    return null;
+  }
+
+  return (
+    '<item>' +
+      '<title>' + msg.author.name + ' - ' + formatDate(new Date(msg.value.timestamp)) + '</title>' +
+      '<description><![CDATA[' + content + ']]></description>' +
+      '<link>' + opts.base + escape(name) + '</link>' +
+      '<pubDate>' + new Date(msg.value.timestamp).toUTCString() + '</pubDate>' +
+      '<guid>' + msg.key + '</guid>' +
+    '</item>'
+  );
+}
+
 function msgTimestamp(msg, name) {
  var date = new Date(msg.value.timestamp);
  var isoStr = date.toISOString();