feat: resolvers for chain edit and list

src/app/resolvers/chain-resolver.ts

@@ -0,0 +1,24 @@
+import { RedirectCommand, ResolveFn, Router } from '@angular/router';
+import { Chain } from '../models/Chain';
+import { ChainDAO } from '../dao/ChainDAO';
+import { inject } from '@angular/core';
+
+export const chainResolver: ResolveFn<Chain> = async (route, _) => {
+  const chainDAO = inject(ChainDAO);
+  const router = inject(Router);
+  const chainID = (<{ id: string }>route.params).id;
+  let chain = new Chain('', null);
+  try {
+    const results = await chainDAO.findBy({ id: Number(chainID) });
+    if (!results[0]) {
+      throw new Error('The search for chain on edit did not find any match');
+    }
+    chain = results[0];
+  } catch (e) {
+    console.error(e);
+    return new RedirectCommand(router.parseUrl('settings/chains'), {
+      skipLocationChange: true,
+    });
+  }
+  return chain;
+};