import { promises as fs } from "node:fs";
import { spawn } from "node:child_process";
import path from "node:path";
import { fileURLToPath } from "node:url";
import { createHash } from "node:crypto";
const root = path.dirname(fileURLToPath(import.meta.url));
const dir = path.join(root, ".toolchains");
const proxy = process.env.HTTPS_PROXY || process.env.https_proxy;
const proxyArgs = proxy
  ? (() => {
      const u = new URL(proxy);
      return [
        "--proxy=http",
        "--proxy_host=" + u.hostname,
        "--proxy_port=" + (u.port || "80"),
      ];
    })()
  : [];
const run = (c, a) =>
  new Promise((resolve, reject) => {
    const p = spawn(c, a, { stdio: "inherit" });
    p.on("error", reject);
    p.on("exit", (n) =>
      n === 0 ? resolve() : reject(Error(c + " exited " + n)),
    );
  });
if (process.platform !== "linux")
  throw Error(
    "Automatic setup supports Linux. On other hosts install Android SDK, JDK 17 and Gradle 8.13; set ANDROID_HOME, JAVA_HOME and FORMA_GRADLE.",
  );
await run(
  process.env.JAVA_HOME
    ? path.join(process.env.JAVA_HOME, "bin", "javac")
    : "javac",
  ["-version"],
);
await fs.mkdir(dir, { recursive: true });
const gradleZip = path.join(dir, "gradle.zip");
if (
  !(await fs.access(path.join(dir, "gradle-8.13", "bin", "gradle")).then(
    () => true,
    () => false,
  ))
) {
  await run("curl", [
    "-fL",
    "--connect-timeout",
    "20",
    "--max-time",
    "300",
    "--retry",
    "2",
    "-o",
    gradleZip,
    "https://services.gradle.org/distributions/gradle-8.13-bin.zip",
  ]);
  const shaFile = path.join(dir, "gradle.sha256");
  await run("curl", [
    "-fL",
    "-o",
    shaFile,
    "https://services.gradle.org/distributions/gradle-8.13-bin.zip.sha256",
  ]);
  if (
    createHash("sha256")
      .update(await fs.readFile(gradleZip))
      .digest("hex") !== (await fs.readFile(shaFile, "utf8")).trim()
  )
    throw Error("Gradle checksum mismatch");
  await run("unzip", ["-q", "-o", gradleZip, "-d", dir]);
}
const sdk =
  process.env.ANDROID_HOME ||
  process.env.ANDROID_SDK_ROOT ||
  path.join(dir, "android-sdk");
const manager = path.join(sdk, "cmdline-tools", "latest", "bin", "sdkmanager");
try {
  await fs.access(manager);
} catch {
  const zip = path.join(dir, "android-tools.zip"),
    staging = path.join(dir, "sdk-tools");
  await run("curl", [
    "-fL",
    "--connect-timeout",
    "20",
    "--max-time",
    "300",
    "--retry",
    "2",
    "-o",
    zip,
    "https://dl.google.com/android/repository/commandlinetools-linux-13114758_latest.zip",
  ]);
  await run("unzip", ["-q", "-o", zip, "-d", staging]);
  await fs.mkdir(path.dirname(path.dirname(manager)), { recursive: true });
  await fs.cp(
    path.join(staging, "cmdline-tools"),
    path.join(sdk, "cmdline-tools", "latest"),
    { recursive: true },
  );
}
// sdkmanager presents licenses to the human running setup; never silently accepts them.
await run(manager, [
  "--sdk_root=" + sdk,
  ...proxyArgs,
  "platforms;android-36",
  "build-tools;35.0.0",
]);
console.log("Android toolchain ready. Run node native/build.mjs --doctor.");