n8n-control

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

export interface N8nConfig {
  api_url: string;
  api_key: string;
  api_version_path: string;
}

const DEFAULT_CONFIG: N8nConfig = {
  api_url: "",
  api_key: "",
  api_version_path: "/api/v1",
};

let cachedConfig: N8nConfig | null = null;

export function loadN8nConfig(reload = false): N8nConfig {
  if (cachedConfig !== null && !reload) {
    return cachedConfig;
  }

  const configPath = join(__dirname, "..", "n8n-config.json");

  if (existsSync(configPath)) {
    try {
      const raw = readFileSync(configPath, "utf-8");
      const parsed = JSON.parse(raw) as Partial<N8nConfig>;
      cachedConfig = {
        api_url: parsed.api_url ?? DEFAULT_CONFIG.api_url,
        api_key: parsed.api_key ?? DEFAULT_CONFIG.api_key,
        api_version_path: parsed.api_version_path ?? DEFAULT_CONFIG.api_version_path,
      };
    } catch {
      cachedConfig = { ...DEFAULT_CONFIG };
    }
  } else {
    cachedConfig = { ...DEFAULT_CONFIG };
  }

  return cachedConfig;
}