From 7f65b47bfb333632c87927c38b90918bedcf5eae Mon Sep 17 00:00:00 2001
From: rtkay123 <dev@kanjala.com>
Date: Sun, 23 Nov 2025 10:22:38 +0200
Subject: docs: book

---
 docs/book/mermaid-init.js | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 docs/book/mermaid-init.js

(limited to 'docs/book/mermaid-init.js')

diff --git a/docs/book/mermaid-init.js b/docs/book/mermaid-init.js
new file mode 100644
index 0000000..0469ff1
--- /dev/null
+++ b/docs/book/mermaid-init.js
@@ -0,0 +1,39 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+(() => {
+    const darkThemes = ['ayu', 'navy', 'coal'];
+    const lightThemes = ['light', 'rust'];
+
+    const classList = document.getElementsByTagName('html')[0].classList;
+
+    let lastThemeWasLight = true;
+    for (const cssClass of classList) {
+        if (darkThemes.includes(cssClass)) {
+            lastThemeWasLight = false;
+            break;
+        }
+    }
+
+    const theme = lastThemeWasLight ? 'default' : 'dark';
+    mermaid.initialize({ startOnLoad: true, theme });
+
+    // Simplest way to make mermaid re-render the diagrams in the new theme is via refreshing the page
+
+    for (const darkTheme of darkThemes) {
+        document.getElementById(darkTheme).addEventListener('click', () => {
+            if (lastThemeWasLight) {
+                window.location.reload();
+            }
+        });
+    }
+
+    for (const lightTheme of lightThemes) {
+        document.getElementById(lightTheme).addEventListener('click', () => {
+            if (!lastThemeWasLight) {
+                window.location.reload();
+            }
+        });
+    }
+})();
-- 
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