matugen: change macOS dark/light mode

stow/.config/matugen/config.toml

@@ -86,3 +86,24 @@ output_path = '~/.config/ghostty/matugen'
 input_path = './templates/vicinae.toml'
 output_path = '~/.local/share/vicinae/themes/matugen.toml'
 post_hook = 'vicinae theme set matugen'
+
+[templates.macos-accent]
+colors_to_compare = [
+    { name = "-1", color = "#696766" }, # graphite
+    { name = "0", color = "#C03437" }, # red
+    { name = "1", color = "#C65D0A" }, # orange
+    { name = "2", color = "#BE8F0F" }, # yellow
+    { name = "3", color = "#409226" }, # green
+    { name = "4", color = "#1B5DC7" }, # blue
+    { name = "5", color = "#AD29AB" }, # purple
+    { name = "6", color = "#BC3F77" }, # pink
+]
+
+compare_to = "{{colors.primary.default.hex}}"
+pre_hook = "defaults write -globalDomain AppleAccentColor -int {{closest_color}}"
+post_hook = "~/.config/matugen/scripts/macos-accent-notification"
+input_path = "/dev/null"
+
+[templates.macos-dark-mode]
+input_path = "/dev/null"
+post_hook = '~/.config/matugen/scripts/macos-darkmode.sh {{mode}}'

stow/.config/matugen/scripts/macos-accent-notification

@@ -0,0 +1,14 @@
+#!/usr/bin/env swift
+// from: https://alexwlchan.net/2022/changing-the-macos-accent-colour/
+
+import Foundation
+
+let notifications = [
+    "AppleColorPreferencesChangedNotification",
+    "AppleAquaColorVariantChanged"
+]
+
+for name in notifications {
+    let notifyEvent = Notification.Name(name)
+    DistributedNotificationCenter.default().post(name: notifyEvent, object: nil)
+}

stow/.config/matugen/scripts/macos-darkmode.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+if [ "$1" = "dark" ]; then
+  osascript -e 'tell application "System Events" to tell appearance preferences to set dark mode to true'
+elif [ "$1" = "light" ]; then
+  osascript -e 'tell application "System Events" to tell appearance preferences to set dark mode to false'
+else
+  echo "$0: [dark|light]"
+fi