Return errors when rule parsing is bad

src/database/database.ts

@@ -145,7 +145,7 @@ export class Database {
          rawRules =
             "service realtimedb {\n   match /* {\n      allow read, write, list: if false; \n   }\n}";
          // still json, so switching to
-      } catch (err) {}
+      } catch (err) { }
 
       let { runner, error } = compileRule(rawRules);
       if (error) {
@@ -157,7 +157,7 @@ export class Database {
       return undefined;
    }
 
-   async setRules(rawRules: string) {
+   async setRules(rawRules: string): Promise<RuleError | undefined> {
       const { runner, error } = compileRule(rawRules);
       if (error) return error;
       await Settings.setDatabaseRules(this.name, rawRules);

src/web/v1/admin.ts

@@ -112,7 +112,14 @@ AdminRoute.get("/database", (ctx) => {
 
    if (publickey) await db.setPublicKey(publickey);
 
-   if (rules) await db.setRules(rules);
+   if (rules) {
+      const error = await db.setRules(rules);
+      if (error) {
+         ctx.status = 500;
+         ctx.body = error;
+         return;
+      }
+   }
 
    if (accesskey) await db.setAccessKey(accesskey);