refactor: unify backend and frontend servers (#3)

* refactor: unify backend and frontend servers

* refactor: correct paths for openapi & drizzle

* refactor: move api-client to client

* fix: drizzle paths

* chore: fix linting issues

* fix: form reset issue

app/server/modules/backends/directory/directory-backend.ts

@@ -0,0 +1,59 @@
+import * as fs from "node:fs/promises";
+import * as npath from "node:path";
+import { toMessage } from "../../../utils/errors";
+import { logger } from "../../../utils/logger";
+import type { VolumeBackend } from "../backend";
+import { BACKEND_STATUS, type BackendConfig } from "~/schemas/volumes";
+
+const mount = async (config: BackendConfig, _volumePath: string) => {
+	if (config.backend !== "directory") {
+		return { status: BACKEND_STATUS.error, error: "Invalid backend type" };
+	}
+
+	logger.info("Mounting directory volume from:", config.path);
+
+	try {
+		await fs.access(config.path);
+		const stats = await fs.stat(config.path);
+
+		if (!stats.isDirectory()) {
+			return { status: BACKEND_STATUS.error, error: "Path is not a directory" };
+		}
+
+		return { status: BACKEND_STATUS.mounted };
+	} catch (error) {
+		logger.error("Failed to mount directory volume:", error);
+		return { status: BACKEND_STATUS.error, error: toMessage(error) };
+	}
+};
+
+const unmount = async () => {
+	logger.info("Cannot unmount directory volume.");
+	return { status: BACKEND_STATUS.unmounted };
+};
+
+const checkHealth = async (config: BackendConfig) => {
+	if (config.backend !== "directory") {
+		return { status: BACKEND_STATUS.error, error: "Invalid backend type" };
+	}
+
+	try {
+		await fs.access(config.path);
+
+		// Try to create a temporary file to ensure write access
+		const tempFilePath = npath.join(config.path, `.healthcheck-${Date.now()}`);
+		await fs.writeFile(tempFilePath, "healthcheck");
+		await fs.unlink(tempFilePath);
+
+		return { status: BACKEND_STATUS.mounted };
+	} catch (error) {
+		logger.error("Directory health check failed:", error);
+		return { status: BACKEND_STATUS.error, error: toMessage(error) };
+	}
+};
+
+export const makeDirectoryBackend = (config: BackendConfig, volumePath: string): VolumeBackend => ({
+	mount: () => mount(config, volumePath),
+	unmount,
+	checkHealth: () => checkHealth(config),
+});