add amin email regex env var

.env.example

@@ -20,6 +20,8 @@ NODE_ENV=development
 # OPTIONAL VARIABLES
 # This is used for validating emails that are allowed to log in. Every email that do not match this regex will be rejected.
 # WHITELISTED_EMAILS="authorized@yahoo\.com|authorized@gmail\.com"
+# Accounts with these emails will get global admin rights. This grants access to the admin UI.
+# ADMIN_EMAILS="admin@example\.com|another-admin@example\.com"
 # This is used for logging in via GitHub. You can leave these commented out if you don't want to use GitHub for authentication.
 # AUTH_GITHUB_CLIENT_ID=
 # AUTH_GITHUB_CLIENT_SECRET=

apps/webapp/app/env.server.ts

@@ -27,6 +27,7 @@ const EnvironmentSchema = z.object({
     .string()
     .refine(isValidRegex, "WHITELISTED_EMAILS must be a valid regex.")
     .optional(),
+  ADMIN_EMAILS: z.string().refine(isValidRegex, "ADMIN_EMAILS must be a valid regex.").optional(),
   REMIX_APP_PORT: z.string().optional(),
   LOGIN_ORIGIN: z.string().default("http://localhost:3030"),
   APP_ORIGIN: z.string().default("http://localhost:3030"),

apps/webapp/app/models/user.server.ts

@@ -47,12 +47,21 @@ export async function findOrCreateMagicLinkUser(
     },
   });
 
+  const adminEmailRegex = env.ADMIN_EMAILS ? new RegExp(env.ADMIN_EMAILS) : undefined;
+  const makeAdmin = adminEmailRegex ? adminEmailRegex.test(input.email) : false;
+
   const user = await prisma.user.upsert({
     where: {
       email: input.email,
     },
-    update: { email: input.email },
-    create: { email: input.email, authenticationMethod: "MAGIC_LINK" },
+    update: {
+      email: input.email,
+    },
+    create: {
+      email: input.email,
+      authenticationMethod: "MAGIC_LINK",
+      admin: makeAdmin, // only on create, to prevent automatically removing existing admins
+    },
   });
 
   return {