From 3db1c7a52122cc0eb180c764ea87447b5b88a3bc Mon Sep 17 00:00:00 2001
From: Roipoussiere <roipoussiere@protonmail.com>
Date: Mon, 5 Jun 2023 19:04:56 +0200
Subject: [PATCH] swatch: look for song titles in code metadata

---
 website/src/pages/swatch/list.json.js | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/website/src/pages/swatch/list.json.js b/website/src/pages/swatch/list.json.js
index 6d86e384..ecc1d41a 100644
--- a/website/src/pages/swatch/list.json.js
+++ b/website/src/pages/swatch/list.json.js
@@ -1,9 +1,26 @@
+export function getMetadata(raw_code) {
+  // https://stackoverflow.com/a/15123777
+  const comment_regexp = /\/\*([\s\S]*?)\*\/|([^\\:]|^)\/\/(.*)$/gm;
+
+  const tag_regexp = /@([a-z]*):? (.*)/gm
+  const tags = {};
+
+  for (const match of raw_code.matchAll(comment_regexp)) {
+    const comment = match[1] ? match[1] : '' + match[3] ? match[3] : '';
+    for (const tag_match of comment.trim().matchAll(tag_regexp)) {
+      tags[tag_match[1]] = tag_match[2].trim()
+    }
+  }
+
+  return tags;
+}
+
 export function getMyPatterns() {
   const my = import.meta.glob('../../../../my-patterns/**', { as: 'raw', eager: true });
   return Object.fromEntries(
-    Object.entries(my) //
-      .filter(([name]) => name.endsWith('.txt')) //
-      .map(([name, raw]) => [name.split('/').slice(-1), raw]), //
+    Object.entries(my)
+      .filter(([name]) => name.endsWith('.txt'))
+      .map(([name, raw]) => [ getMetadata(raw)['title'] || name.split('/').slice(-1), raw ]),
   );
 }