using Rest;

public class SimpleTweet {
	private static const string CONSUMER_KEY = "#######################"; // this comes from your app's twitter account page
	private static const string CONSUMER_SECRET = "########################################"; // this comes from your app's twitter account page
	private static const string URL_FORMAT = "https://api.twitter.com";
	private static const string REQUEST_TOKEN_URL = "https://api.twitter.com/oauth/request_token";

	private static const string FUNCTION_ACCESS_TOKEN = "oauth/access_token";
	private static const string FUNCTION_STATUSES_UPDATE = "1/statuses/update.xml";

	private static const string PARAM_STATUS = "status";

	public static int main(string[] args) {
		// make sure there is a message to tweet
		if(args[1] == null || args[1] == "") {
			stdout.printf("No tweet message specified.\n");
			return 0;
		}

		/** Authenticating with Twitter */
		// initialize proxy
		var proxy = new OAuthProxy(CONSUMER_KEY, CONSUMER_SECRET, URL_FORMAT, false);

		// request token
		try {
			proxy.request_token("oauth/request_token", "oob");
		} catch (Error e) {
			stderr.printf("Couldn't get request token: %s\n", e.message);
			return 1;
		}

		// prompt user for pin
		stdout.printf("Go to http://twitter.com/oauth/authorize?oauth_token=%s then enter the PIN\n", proxy.get_token());
		string pin = stdin.read_line();

		// access token
		try { proxy.access_token(FUNCTION_ACCESS_TOKEN, pin); }
		catch (Error e) {
			stderr.printf("Couldn't get access token: %s\n", e.message);
			return 1;
		}

		/** sending the tweet */
		// setup call
		ProxyCall call = proxy.new_call();
		call.set_function(FUNCTION_STATUSES_UPDATE);
		call.set_method("POST");
		call.add_param(PARAM_STATUS, args[1]);
		try { call.sync(); } catch (Error e) {
			stderr.printf("Cannot make call: %s\n", e.message);
			return 1;
		}

		// print success
		stdout.printf("Tweet succeeded!\n");

		return 0;
	}
}