From 5eec1e98e6f6b16d4a29cdbbc69c573fb06e538d Mon Sep 17 00:00:00 2001
From: Emile Bangma <github@emilebangma.com>
Date: Wed, 25 Sep 2024 22:15:07 +0000
Subject: [PATCH] fix(layout): grid triage with backlinks (#1442)

---
 quartz/components/scripts/darkmode.inline.ts |   42 ++++++++++++++++++++++++++++--------------
 1 files changed, 28 insertions(+), 14 deletions(-)

diff --git a/quartz/components/scripts/darkmode.inline.ts b/quartz/components/scripts/darkmode.inline.ts
index e16f4f8..038ae0f 100644
--- a/quartz/components/scripts/darkmode.inline.ts
+++ b/quartz/components/scripts/darkmode.inline.ts
@@ -2,22 +2,36 @@
 const currentTheme = localStorage.getItem("theme") ?? userPref
 document.documentElement.setAttribute("saved-theme", currentTheme)
 
+const emitThemeChangeEvent = (theme: "light" | "dark") => {
+  const event: CustomEventMap["themechange"] = new CustomEvent("themechange", {
+    detail: { theme },
+  })
+  document.dispatchEvent(event)
+}
+
 document.addEventListener("nav", () => {
-  const switchTheme = (e: any) => {
-    if (e.target.checked) {
-      document.documentElement.setAttribute("saved-theme", "dark")
-      localStorage.setItem("theme", "dark")
-    } else {
-      document.documentElement.setAttribute("saved-theme", "light")
-      localStorage.setItem("theme", "light")
-    }
+  const switchTheme = (e: Event) => {
+    const newTheme =
+      document.documentElement.getAttribute("saved-theme") === "dark" ? "light" : "dark"
+    document.documentElement.setAttribute("saved-theme", newTheme)
+    localStorage.setItem("theme", newTheme)
+    emitThemeChangeEvent(newTheme)
+  }
+
+  const themeChange = (e: MediaQueryListEvent) => {
+    const newTheme = e.matches ? "dark" : "light"
+    document.documentElement.setAttribute("saved-theme", newTheme)
+    localStorage.setItem("theme", newTheme)
+    emitThemeChangeEvent(newTheme)
   }
 
   // Darkmode toggle
-  const toggleSwitch = document.querySelector("#darkmode-toggle") as HTMLInputElement
-  toggleSwitch.removeEventListener("change", switchTheme)
-  toggleSwitch.addEventListener("change", switchTheme)
-  if (currentTheme === "dark") {
-    toggleSwitch.checked = true
-  }
+  const themeButton = document.querySelector("#darkmode") as HTMLButtonElement
+  themeButton.addEventListener("click", switchTheme)
+  window.addCleanup(() => themeButton.removeEventListener("click", switchTheme))
+
+  // Listen for changes in prefers-color-scheme
+  const colorSchemeMediaQuery = window.matchMedia("(prefers-color-scheme: dark)")
+  colorSchemeMediaQuery.addEventListener("change", themeChange)
+  window.addCleanup(() => colorSchemeMediaQuery.removeEventListener("change", themeChange))
 })

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