import { homedir } from "node:os";
import { join } from "node:path";

const HOME = homedir();

export const CONFIG = {
  firecrackerBin: "/usr/local/bin/firecracker",
  baseDir: join(HOME, ".fireclaw"),
  kernelPath: join(HOME, ".fireclaw", "vmlinux"),
  baseRootfs: join(HOME, ".fireclaw", "base-rootfs.ext4"),
  runsDir: join(HOME, ".fireclaw", "runs"),
  sshKeyPath: join(HOME, ".fireclaw", "id_ed25519"),
  sshPubKeyPath: join(HOME, ".fireclaw", "id_ed25519.pub"),
  socketDir: "/tmp/fireclaw",
  ipPoolFile: join(HOME, ".fireclaw", "ip-pool.json"),
  ipPoolLock: join(HOME, ".fireclaw", "ip-pool.lock"),

  bridge: {
    name: "fcbr0",
    ip: "172.16.0.1",
    subnet: "172.16.0.0/24",
    netmask: "255.255.255.0",
    gateway: "172.16.0.1",
    prefix: "172.16.0",
    minHost: 2,
    maxHost: 254,
  },

  vm: {
    vcpuCount: 1,
    memSizeMib: 256,
    defaultTimeoutMs: 60_000,
    bootTimeoutMs: 15_000,
    sshPollIntervalMs: 100,
  },

  snapshot: {
    rootfsPath: join(HOME, ".fireclaw", "snapshot-rootfs.ext4"),
    statePath: join(HOME, ".fireclaw", "snapshot.state"),
    memPath: join(HOME, ".fireclaw", "snapshot.mem"),
    tapDevice: "fctap200",
    ip: "172.16.0.200",
    octet: 200,
  },

  workspacesDir: join(HOME, ".fireclaw", "workspaces"),
  workspaceSizeMib: 64,

  // S3 URLs for Firecracker CI assets
  assets: {
    kernelUrl:
      "https://s3.amazonaws.com/spec.ccfc.min/firecracker-ci/v1.11/x86_64/vmlinux-5.10.225",
    rootfsListUrl:
      "http://spec.ccfc.min.s3.amazonaws.com/?prefix=firecracker-ci/v1.11/x86_64/ubuntu",
    rootfsBaseUrl: "https://s3.amazonaws.com/spec.ccfc.min",
  },
} as const;