singularity-forge/web/app/api/steer/route.ts

import { existsSync, readFileSync } from "node:fs";
import { join } from "node:path";

import {
	requireProjectCwd,
	resolveBridgeRuntimeConfig,
} from "../../../../src/web/bridge-service.ts";
import type { SteerData } from "../../../lib/remaining-command-types.ts";

export const runtime = "nodejs";
export const dynamic = "force-dynamic";

export async function GET(request: Request): Promise<Response> {
	try {
		const projectCwd = requireProjectCwd(request);
		const config = resolveBridgeRuntimeConfig(undefined, projectCwd);
		const overridesPath = join(config.projectCwd, ".sf", "OVERRIDES.md");

		let overridesContent: string | null = null;
		if (existsSync(overridesPath)) {
			overridesContent = readFileSync(overridesPath, "utf-8");
		}

		const payload: SteerData = { overridesContent };
		return Response.json(payload, {
			headers: {
				"Cache-Control": "no-store",
			},
		});
	} catch (error) {
		const message = error instanceof Error ? error.message : String(error);
		return Response.json(
			{ error: message },
			{
				status: 500,
				headers: {
					"Cache-Control": "no-store",
				},
			},
		);
	}
}