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package org.etlunit.cli;

import org.clamshellcli.api.Command;
import org.clamshellcli.api.Configurator;
import org.clamshellcli.api.Context;
import org.clamshellcli.api.IOConsole;

import java.util.HashMap;
import java.util.Map;

public class SleepCmd implements Command {
	private static final String NAMESPACE = "syscmd";
	public static final String ACTION_NAME = "sleep";

	public Object execute(Context ctx) {
		IOConsole console = ctx.getIoConsole();
		String [] inputLine = (String []) ctx.getValue(Context.KEY_COMMAND_LINE_ARGS);

		try {
			int time = Integer.parseInt(inputLine[0]);

			while (time > 0) {
				time--;

				Thread.sleep(1000L);

				console.writeOutput(".");
			}
			console.writeOutput(Configurator.VALUE_LINE_SEP);
		} catch (NumberFormatException exc) {
			console.writeOutput("Input string " + inputLine[0] + " is not a number" + Configurator.VALUE_LINE_SEP);
		} catch (Exception exc) {
			console.writeOutput(exc.toString() + Configurator.VALUE_LINE_SEP);
		}

		return null;
	}

	public void plug(Context plug) {
		// no load-time setup needed
	}

	public Descriptor getDescriptor() {
		return new Descriptor() {
			public String getNamespace() {
				return NAMESPACE;
			}

			public String getName() {
				return ACTION_NAME;
			}

			public String getDescription() {
				return "Sleeps for the specified number of seconds";
			}

			public String getUsage() {
				return "Type 'time'";
			}

			public Map getArguments() {
				Map map = new HashMap();
				
				map.put("time", "Sleep time, in seconds");
				
				return map;
			}
		};
	}
}