Flatten migrations, kvs lib, fix tabs

src-web/lib/keyValueStore.ts

@@ -0,0 +1,62 @@
+import { invoke } from '@tauri-apps/api';
+import type { KeyValue } from './models';
+
+const DEFAULT_NAMESPACE = 'app';
+
+type KeyValueValue = string | number | boolean;
+
+export async function setKeyValue<T>({
+  namespace = DEFAULT_NAMESPACE,
+  key,
+  value,
+}: {
+  namespace?: string;
+  key: string | string[];
+  value: T;
+}): Promise<T> {
+  await invoke('set_key_value', {
+    namespace,
+    key: buildKeyValueKey(key),
+    value: JSON.stringify(value),
+  });
+  return value;
+}
+
+export async function getKeyValue<T extends KeyValueValue>({
+  namespace = DEFAULT_NAMESPACE,
+  key,
+  fallback,
+}: {
+  namespace?: string;
+  key: string | string[];
+  fallback: T;
+}) {
+  const kv = (await invoke('get_key_value', {
+    namespace,
+    key: buildKeyValueKey(key),
+  })) as KeyValue | null;
+  return extractKeyValueOrFallback(kv, fallback);
+}
+
+export function extractKeyValue<T extends KeyValueValue>(kv: KeyValue | null): T | undefined {
+  if (kv === null) return undefined;
+  try {
+    return JSON.parse(kv.value) as T;
+  } catch (err) {
+    return undefined;
+  }
+}
+
+export function extractKeyValueOrFallback<T extends KeyValueValue>(
+  kv: KeyValue | null,
+  fallback: T,
+): T {
+  const v = extractKeyValue<T>(kv);
+  if (v === undefined) return fallback;
+  return v;
+}
+
+export function buildKeyValueKey(key: string | string[]): string {
+  if (typeof key === 'string') return key;
+  return key.join('::');
+}