import fs from "fs";
import path from "path";
import YAML from "yaml";

export interface InstanceConfig {
  id: string;
  containerName: string;
  image: string;
  savedDir: string;
  configPaths: {
    serverDescription: string;
    worldsRoot: string;
  };
}

const CONFIG_PATH = path.join(__dirname, "..", "..", "config", "instances.yml");

let cache: { instances: InstanceConfig[] };

export function loadConfig() {
  if (!cache) {
    const raw = fs.readFileSync(CONFIG_PATH, "utf8");
    cache = YAML.parse(raw);
  }
  return cache;
}

export function getInstance(id: string) {
  return loadConfig().instances.find(i => i.id === id);
}