[#1] Add default theme env variable

api/src/server.ts

@@ -9,6 +9,12 @@ import { createServer } from '@redwoodjs/api-server'
 
 import { logger } from 'src/lib/logger'
 import { handleTusUpload } from 'src/lib/tus'
+
+enum Theme {
+  light = 'light',
+  dark = 'dark',
+}
+
 ;(async () => {
   const { hasFlag } = await import('country-flag-icons')
 
@@ -17,6 +23,11 @@ import { handleTusUpload } from 'src/lib/tus'
       'Invalid COUNTRY environment variable, please select a valid ISO-3166-1 alpha-2 country code\n See https://en.wikipedia.org/wiki/ISO_3166-1#Codes'
     )
 
+  if (!(process.env.DEFAULT_THEME.toLowerCase() in Theme))
+    throw new Error(
+      'Invalid DEFAULT_THEME environment variable, please select either light or dark'
+    )
+
   const server = await createServer({
     logger,
     configureApiServer: async (server) => {