// provision/index.ts — Phase 0: provision the throwaway foundation TEST VM.
//
// Isolated stack (platformName "foundation-test" → no name collision with the
// production olsicloud4-* resources). Uses the vendored @olsitec/pulumi-hetzner
// HetznerDeployment for one cx22, adds a firewall, and installs Docker via the
// module's cloud-init lateCommands.
//
// GOTCHA (VENDORED.md): the module's cloud-init moves SSH to PORT 222 and creates
// root + andiolsi users. The firewall + the Docker-over-SSH provider use :222.
//
// Token comes from ENV (export HCLOUD_TOKEN="$(pass olsicloud4/HCLOUD_TOKEN)"),
// never committed.
import * as pulumi from "@pulumi/pulumi";
import * as hcloud from "@pulumi/hcloud";
import { HetznerDeployment } from "@olsitec/pulumi-hetzner";
import * as os from "os";

const token = process.env.HCLOUD_TOKEN;
if (!token) {
  throw new Error(
    'HCLOUD_TOKEN env required: export HCLOUD_TOKEN="$(pass olsicloud4/HCLOUD_TOKEN)"',
  );
}

const platformName = "foundation-test";
const datacenter = "nbg1-dc3"; // matches existing cx22 servers (known-good)
// Dedicated throwaway key: the operator's id_rsa pubkey is already registered in
// the project (olsicloud4-ssh-key) and Hetzner rejects duplicate key CONTENT, so
// the test VM uses its own ed25519 key. SSH/Docker-over-SSH use the matching
// private key (~/.ssh/foundation-test_ed25519) on port 222.
const sshKeyPath =
  process.env.FOUNDATION_TEST_SSH_PUBKEY ||
  `${os.homedir()}/.ssh/foundation-test_ed25519.pub`;

// Install Docker CE on Debian 12 (runs in cloud-init runcmd, after base packages).
const dockerInstall = [
  "install -m 0755 -d /etc/apt/keyrings",
  "curl -fsSL https://download.docker.com/linux/debian/gpg -o /etc/apt/keyrings/docker.asc",
  "chmod a+r /etc/apt/keyrings/docker.asc",
  'echo "deb [arch=amd64 signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/debian bookworm stable" > /etc/apt/sources.list.d/docker.list',
  "apt-get update",
  "apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin",
  "systemctl enable --now docker",
  "touch /root/.provision-done",
];

const dep = new HetznerDeployment(platformName, {
  platformName,
  hcloudToken: token,
  sshKeyPath,
  datacenter,
  servers: [
    {
      name: "foundation-test",
      hostname: "foundation-test",
      type: "cx23", // current-gen Intel shared (cx22 is legacy/unavailable for new servers); 2c/4G
      image: "debian-12",
      labels: { purpose: "foundation-test", ephemeral: "true" },
      cloudInitConfig: { lateCommands: dockerInstall },
    },
  ],
});

// Own provider for the firewall (the module's provider is internal/private).
const provider = new hcloud.Provider("foundation-test-hcloud", { token });

const firewall = new hcloud.Firewall(
  "foundation-test-fw",
  {
    name: "foundation-test-fw",
    rules: [
      // SSH — cloud-init moves sshd to 222 (VENDORED.md gotcha)
      { direction: "in", protocol: "tcp", port: "222", sourceIps: ["0.0.0.0/0", "::/0"] },
      // Caddy HTTP/HTTPS
      { direction: "in", protocol: "tcp", port: "80", sourceIps: ["0.0.0.0/0", "::/0"] },
      { direction: "in", protocol: "tcp", port: "443", sourceIps: ["0.0.0.0/0", "::/0"] },
      // Forgejo git-over-SSH (CONTRACT_001 forgeSshPort)
      { direction: "in", protocol: "tcp", port: "2222", sourceIps: ["0.0.0.0/0", "::/0"] },
      { direction: "in", protocol: "icmp", sourceIps: ["0.0.0.0/0", "::/0"] },
    ],
  },
  { provider },
);

new hcloud.FirewallAttachment(
  "foundation-test-fw-attach",
  {
    firewallId: firewall.id.apply((id) => Number(id)),
    serverIds: [dep.servers[0].id.apply((id) => Number(id))],
  },
  { provider },
);

// Outputs consumed by the foundation test stack + the operator.
export const serverName = dep.serverInfo[0].name;
export const publicIp = dep.serverInfo[0].publicIp;
export const sshCommand = pulumi.interpolate`ssh -p 222 root@${dep.serverInfo[0].publicIp}`;
export const dockerHost = pulumi.interpolate`ssh://root@${dep.serverInfo[0].publicIp}:222`;