import { execSync } from "child_process";
import { writeFileSync } from "fs";
import path from "path";

const candidates = [
	"/usr/bin/python3.9",
	"python3",
	"python"
];

const pythonPathFile = path.resolve(process.cwd(), "python-path.txt");

function checkPython(pythonCmd) {
	try {
		execSync(`${pythonCmd} --version`, { stdio: "ignore" });
		execSync(`${pythonCmd} -m pip --version`, { stdio: "ignore" });
		return true;
	} catch {
		return false;
	}
}

function installDeps(pythonCmd) {
	try {
		console.log(`Using Python command: ${pythonCmd}`);
		execSync(`${pythonCmd} -m pip install -r requirements.txt`, { stdio: "inherit" });
		writeFileSync(pythonPathFile, pythonCmd, "utf-8");
		console.log(`✅ Python packages installed successfully. Saved Python path to ${pythonPathFile}`);
		process.exit(0);
	} catch (err) {
		console.error("Failed to install Python packages with", pythonCmd);
	}
}

function main() {
	for (const cmd of candidates) {
		if (checkPython(cmd)) {
			installDeps(cmd);
			return;
		}
	}
	console.error(
		"\n⚠️  Python or pip not found or pip is broken.\n" +
		"Please install Python 3 and pip manually, then run:\n\n" +
		"  pip install -r requirements.txt\n"
	);
	process.exit(1);
}

main();