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org.bndtools.templating.gitrepo

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package org.bndtools.templating.jgit;

import java.net.URI;
import java.util.Objects;
import java.util.concurrent.Executor;

import org.osgi.util.promise.Promise;
import org.osgi.util.promise.PromiseFactory;

import aQute.lib.json.JSONCodec;

public class GitHub {

	private static final String		URL_PREFIX	= "https://api.github.com/repos/";

	private final Cache				cache;
	private final PromiseFactory	promiseFactory;

	public GitHub(Cache cache, Executor executor) {
		this.cache = cache;
		this.promiseFactory = new PromiseFactory(Objects.requireNonNull(executor));
	}

	public GitHub(Cache cache, PromiseFactory promiseFactory) {
		this.cache = cache;
		this.promiseFactory = promiseFactory;
	}

	// TODO: use the async download service when available.
	public Promise loadRepoDetails(String repository) {
		return promiseFactory.submit(() -> {
			byte[] detailsDtoData = cache.download(URI.create(URL_PREFIX + repository));
			return new JSONCodec().dec()
				.from(detailsDtoData)
				.get(GithubRepoDetailsDTO.class);
		});
	}
}