revalidate config changes, check on focus changes

src/pages/api/hash.js

@@ -0,0 +1,27 @@
+import { join } from "path";
+import { createHash } from "crypto";
+import { readFileSync } from "fs";
+
+import checkAndCopyConfig from "utils/config/config";
+
+const configs = ["docker.yaml", "settings.yaml", "services.yaml", "bookmarks.yaml"];
+
+function hash(buffer) {
+  const hashSum = createHash("sha256");
+  hashSum.update(buffer);
+  return hashSum.digest("hex");
+}
+
+export default async function handler(req, res) {
+  const hashes = configs.map((config) => {
+    checkAndCopyConfig(config);
+    const configYaml = join(process.cwd(), "config", config);
+    return hash(readFileSync(configYaml, "utf8"));
+  });
+
+  const combinedHash = hash(hashes.join(""));
+
+  res.send({
+    hash: combinedHash,
+  });
+}