Port PHP to Lua Pages

Signed-off-by: DL6ER <dl6er@dl6er.de>

scripts/pi-hole/lua/theme.lua

@@ -0,0 +1,57 @@
+--[[
+*  Pi-hole: A black hole for Internet advertisements
+*  (c) 2023 Pi-hole, LLC (https://pi-hole.net)
+*  Network-wide ad blocking via your own hardware.
+*
+*  This file is copyright under the latest version of the EUPL.
+*  Please see LICENSE file for your rights under this license.
+]]--
+
+available_themes = {}
+
+available_themes['default-light'] = {
+    name = 'Pi-hole default theme (light, default)',
+    dark = false,
+    color = '#367fa9'
+}
+available_themes['default-dark'] = {
+    name = 'Pi-hole midnight theme (dark)',
+    dark = true,
+    color = '#272c30'
+}
+
+available_themes['default-darker'] = {
+    name = 'Pi-hole deep-midnight theme (dark)',
+    dark = true,
+    color = '#2e6786'
+}
+
+available_themes['high-contrast'] = {
+    name = 'High contrast light',
+    dark = false,
+    color = '#0078a0'
+}
+
+available_themes['high-contrast-dark'] = {
+    name = 'High contrast dark',
+    dark = false,
+    color = '#0077c7'
+}
+
+-- Option to have the theme go with the device dark mode setting, always set the
+-- background to black to avoid flashing
+available_themes['default-auto'] = {
+    name = 'Pi-hole auto theme (light/dark)',
+    dark = true,
+    color = '#367fa9'
+}
+
+available_themes['lcars'] = {
+    name = 'Star Trek LCARS theme (dark)',
+    dark = true,
+    color = '#4488FF'
+}
+
+-- Get properties of currenty selected theme by asking FTL what the currently
+-- enabled theme is
+theme = available_themes[pihole.webtheme()]