Using YAML rather than TSV for index files. Improves both readability and reindexability.

src/save/writeToIndex.js

@@ -2,19 +2,31 @@
 
 const config = require('config');
 const fs = require('fs-extra');
-const Promise = require('bluebird');
-const csvStringify = Promise.promisify(require('csv').stringify);
+const yaml = require('js-yaml');
 
 const interpolate = require('../interpolate.js');
 
 async function writeToIndex(posts, user) {
     const filename = interpolate(config.library.index.file, user, null, false);
-    const newEntries = posts.map(post => config.library.index.keys.map(key => interpolate(`$${key}`, user, post, null, false, 'YYYY-MM-DDTHH:mm:ssZ')));
-    const fullEntries = newEntries.concat(user.indexed.map(entry => Object.values(entry)));
+    const now = new Date();
 
-    const tsvString = await csvStringify(fullEntries, { delimiter: '\t', header: true, columns: config.library.index.keys });
+    // Individual posts are wrapped in [] to get a YAML array value for each individual item, allowing them to be joined manually with a newline
+    // between each entry to improve human readability of the index while maintaining a valid YAML list
+    const oldEntries = user.indexed.map(entry => yaml.safeDump([entry]));
+    const newEntries = posts.map(post => yaml.safeDump([{
+        id: post.id,
+        subreddit: post.subreddit,
+        permalink: post.permalink,
+        url: post.url,
+        hostId: post.host.id,
+        date: post.datetime,
+        indexed: now,
+        title: post.title,
+    }]));
 
-    return fs.writeFile(filename, tsvString);
+    const entries = newEntries.concat(oldEntries).join('\n');
+
+    return fs.writeFile(filename, entries);
 }
 
 module.exports = writeToIndex;