import { execFileSync } from "node:child_process";

const required = ["GITEA_URL", "GITEA_OWNER", "GITEA_TOKEN"];
const missing = required.filter((name) => !process.env[name]);
if (missing.length) {
  console.error(
    `Missing required environment variables: ${missing.join(", ")}`,
  );
  process.exit(2);
}

const base = process.env.GITEA_URL.replace(/\/$/, "");
const owner = process.env.GITEA_OWNER;
const token = process.env.GITEA_TOKEN;
const name = "DockDeck";
const headers = {
  Authorization: `token ${token}`,
  "content-type": "application/json",
};

let response = await fetch(
  `${base}/api/v1/repos/${encodeURIComponent(owner)}/${encodeURIComponent(name)}`,
  { headers },
);
if (response.status === 404) {
  response = await fetch(`${base}/api/v1/user/repos`, {
    method: "POST",
    headers,
    body: JSON.stringify({
      name,
      private: true,
      auto_init: false,
      description: "A premium personal launchpad for Unraid services.",
    }),
  });
}
if (!response.ok) {
  console.error(
    `Gitea repository initialization failed with HTTP ${response.status}.`,
  );
  process.exit(1);
}

const repository = await response.json();
if (!repository.private || repository.owner?.login !== owner) {
  console.error(
    "Gitea returned a repository with an unexpected owner or visibility. Aborting.",
  );
  process.exit(1);
}

const remoteUrl = `${base}/${encodeURIComponent(owner)}/${name}.git`;
let currentRemote = "";
try {
  currentRemote = execFileSync("git", ["remote", "get-url", "origin"], {
    encoding: "utf8",
  }).trim();
} catch {
  /* no origin yet */
}
if (currentRemote && currentRemote !== remoteUrl) {
  console.error(
    "An origin remote already exists with a different URL. No changes were made.",
  );
  process.exit(1);
}
if (!currentRemote)
  execFileSync("git", ["remote", "add", "origin", remoteUrl], {
    stdio: "inherit",
  });

execFileSync(
  "git",
  [
    "-c",
    `http.extraHeader=Authorization: token ${token}`,
    "push",
    "-u",
    "origin",
    "main",
  ],
  {
    stdio: ["ignore", "inherit", "inherit"],
  },
);
console.log(`Private repository ready at ${base}/${owner}/${name}`);