Function downloadCoderVersion

site/e2e/helpers.ts:457–514

(
	version: string,
)

 * caches it so subsequent calls are fast.
 */
export const downloadCoderVersion = async (
	version: string,
): Promise<string> => {
	let versionNumber = version;
	if (versionNumber.startsWith("v")) {
		versionNumber = versionNumber.slice(1);
	}

	const binaryName = `coder-e2e-${versionNumber}`;
	const tempDir = "/tmp/coder-e2e-cache";
	// The install script adds `./bin` automatically to the path :shrug:
	const binaryPath = path.join(tempDir, "bin", binaryName);

	const exists = await new Promise<boolean>((resolve) => {
		const cp = spawn(binaryPath, ["version"]);
		cp.on("close", (code) => {
			resolve(code === 0);
		});
		cp.on("error", () => resolve(false));
	});
	if (exists) {
		return binaryPath;
	}

	// Run our official install script to install the binary
	await new Promise<void>((resolve, reject) => {
		const cp = spawn(
			path.join(__dirname, "../../install.sh"),
			[
				"--version",
				versionNumber,
				"--method",
				"standalone",
				"--prefix",
				tempDir,
				"--binary-name",
				binaryName,
			],
			{
				env: {
					...process.env,
					XDG_CACHE_HOME: "/tmp/coder-e2e-cache",
					TRACE: "1", // tells install.sh to `set -x`, helpful if something goes wrong
				},
			},
		);
		cp.stderr.on("data", (data) => console.error(data.toString()));
		cp.stdout.on("data", (data) => console.info(data.toString()));
		cp.on("close", (code) => {
			if (code === 0) {
				resolve();
			} else {
				reject(new Error(`install.sh failed with code ${code}`));
			}
		});
	});
	return binaryPath;
};