sync

js/src/app/index.ts

@@ -0,0 +1,46 @@
+import fs from "fs/promises";
+import { AppPath } from "./path";
+import { Log } from "../util/log";
+import { Context } from "../util/context";
+
+export namespace App {
+  const log = Log.create({ service: "app" });
+
+  export type Info = Awaited<ReturnType<typeof create>>;
+
+  const ctx = Context.create<Info>("app");
+
+  export async function create(input: { directory: string }) {
+    log.info("creating");
+
+    const dataDir = AppPath.data(input.directory);
+    await fs.mkdir(dataDir, { recursive: true });
+    log.info("created", { path: dataDir });
+
+    const services = new Map<any, any>();
+
+    return {
+      get root() {
+        return input.directory;
+      },
+      service<T extends () => any>(service: any, init: T) {
+        if (!services.has(service)) {
+          log.info("registering service", { name: service });
+          services.set(service, init());
+        }
+        return services.get(service) as ReturnType<T>;
+      },
+    };
+  }
+
+  export function service<T extends () => any>(key: any, init: T) {
+    const app = ctx.use();
+    return app.service(key, init);
+  }
+
+  export async function use() {
+    return ctx.use();
+  }
+
+  export const provide = ctx.provide;
+}