import { join } from "path"

export interface VmConfig {
  cpus?: number
  memory?: string
  image?: string
  mounts?: Record<string, string>
}

export interface SandlotConfig {
  vm?: VmConfig
}

const DEFAULT_CONFIG: SandlotConfig = {
  vm: { image: "ubuntu:24.04" },
}

export async function loadConfig(repoRoot: string): Promise<SandlotConfig> {
  const path = join(repoRoot, "sandlot.json")
  const file = Bun.file(path)
  if (await file.exists()) {
    const userConfig = await file.json()
    return {
      vm: { ...DEFAULT_CONFIG.vm, ...userConfig.vm },
    }
  }
  return DEFAULT_CONFIG
}