import { execFileSync } from 'node:child_process';
import { fileURLToPath } from 'node:url';
import { readCiContext } from './ci-context.mjs';

try {
	const { commit, tag, slug, publish } = readCiContext();
	if (!publish) throw new Error('Images can only be published by pushes or same-repository PRs.');
	execFileSync(process.execPath, [fileURLToPath(new URL('./ci-policy.mjs', import.meta.url))]);
	const env = process.env;
	if (!env.REGISTRY_USERNAME || !env.REGISTRY_PASSWORD) {
		throw new Error('REGISTRY_USERNAME and REGISTRY_PASSWORD are required for publication.');
	}
	const registry = new URL(env.GITHUB_SERVER_URL).host;
	const image = `${registry}/${env.GITHUB_REPOSITORY.toLowerCase()}`;
	const shaImage = `${image}:sha-${commit}`;
	const docker = (...args) => execFileSync('docker', args, { stdio: 'inherit' });
	execFileSync(
		'docker',
		['login', registry, '--username', env.REGISTRY_USERNAME, '--password-stdin'],
		{
			input: env.REGISTRY_PASSWORD,
			stdio: ['pipe', 'inherit', 'inherit'],
		},
	);
	if (tag) {
		docker('pull', shaImage);
		docker('tag', shaImage, `${image}:${tag}`);
		docker('push', `${image}:${tag}`);
		docker('tag', shaImage, `${image}:latest`);
		docker('push', `${image}:latest`);
	} else {
		const branchImage = `${image}:branch-${slug}`;
		docker('build', '-t', shaImage, '-t', branchImage, '.');
		docker('push', shaImage);
		docker('push', branchImage);
	}
} catch (error) {
	console.error(error.message);
	process.exitCode = 1;
}