1 files changed, 55 insertions, 0 deletions
diff --git a/src/js/theme.js b/src/js/theme.js
new file mode 100644
index 0000000..687574e
--- /dev/null
+++ b/src/js/theme.js
@@ -0,0 +1,55 @@
+window.addEventListener('DOMContentLoaded', () => {
+  const preferesDark = window.matchMedia('(prefers-color-scheme: dark)').matches;
+  let isDark = preferesDark;
+
+  const hid = document.querySelector('#hid');
+  const html = document.querySelector('html');
+  const aside = document.querySelector('#side-bar');
+  const sidenotes = document.querySelector('.sidenotes');
+  const harr = document.querySelector('#harr');
+
+  function toogleTheme() {
+    const arg = isDark ? ['dark', 'light'] : ['light', 'dark'];
+    const theme = arg[1];
+
+    if (!hid.classList.replace(...arg)) {
+      hid.classList.add(theme);
+    }
+
+    if (!html.classList.replace(...arg)) {
+      html.classList.add(theme);
+    }
+
+    if (!aside.classList.replace(...arg)) {
+      aside.classList.add(theme);
+    }
+
+    if (!sidenotes.classList.replace(...arg)) {
+      sidenotes.classList.add(theme);
+    }
+
+    if (!harr.classList.replace(...arg)) {
+      harr.classList.add(theme);
+    }
+
+    for (const article of document.querySelectorAll('article')) {
+      if (!article.classList.replace(...arg)) {
+        article.classList.add(theme);
+      }
+    }
+
+    isDark = !isDark;
+  }
+
+  const sun = document.querySelector('.sun');
+  const moon = document.querySelector('.moon');
+
+  sun.addEventListener('click', toogleTheme);
+  moon.addEventListener('click', toogleTheme);
+
+  if (isDark) {
+    hid.classList.add('dark');
+  } else {
+    hid.classList.add('light');
+  }
+});