import { readFileSync, writeFileSync, mkdirSync, renameSync } from "node:fs";
import { homedir } from "node:os";
import { join, dirname } from "node:path";
export const CONFIG_PATH = join(homedir(), ".neuron", "connectors.json");
const SANDBOX = join(homedir(), "neuron-connectd-sandbox");
// Phase-1 default: one zero-auth filesystem server scoped to the sandbox dir.
// Once ~/.neuron/connectors.json exists, it wins.
function defaultConfig() {
    return {
        servers: {
            filesystem: {
                transport: "stdio",
                enabled: true,
                command: "npx",
                args: ["-y", "@modelcontextprotocol/server-filesystem", SANDBOX],
            },
        },
    };
}
export function loadConfig() {
    try {
        const raw = readFileSync(CONFIG_PATH, "utf8");
        const parsed = JSON.parse(raw);
        if (!parsed.servers || typeof parsed.servers !== "object") {
            return defaultConfig();
        }
        return parsed;
    }
    catch {
        // No config file yet — run the Phase-1 default so the bridge is useful out of the box.
        return defaultConfig();
    }
}
// Atomic write of connectors.json (temp + rename), 0600. The bridge owns all writes so the
// soul stays simple and El never has to manipulate JSON. UI edits flow: UI → soul route → bridge.
export function saveConfig(config) {
    mkdirSync(dirname(CONFIG_PATH), { recursive: true });
    const tmp = `${CONFIG_PATH}.tmp`;
    writeFileSync(tmp, JSON.stringify(config, null, 2), { mode: 0o600 });
    renameSync(tmp, CONFIG_PATH);
}
export const PORT = Number(process.env.NEURON_CONNECTD_PORT ?? 7771);
export const HOST = "127.0.0.1"; // loopback only — never bind 0.0.0.0