package com.woorea.openstack.examples.objectstore;

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import com.woorea.openstack.keystone.utils.KeystoneUtils;

import com.woorea.openstack.base.client.OpenStackSimpleTokenProvider;
import com.woorea.openstack.examples.ExamplesConfiguration;
import com.woorea.openstack.keystone.Keystone;
import com.woorea.openstack.keystone.model.Access;
import com.woorea.openstack.keystone.model.Tenants;
import com.woorea.openstack.keystone.model.authentication.TokenAuthentication;
import com.woorea.openstack.keystone.model.authentication.UsernamePassword;
import com.woorea.openstack.swift.Swift;
import com.woorea.openstack.swift.model.ObjectDownload;
import com.woorea.openstack.swift.model.ObjectForUpload;

public class SwiftExample {
	
	private static final File TEST_FILE = new File("pom.xml");
	
	/**
	 * @param args
	 */
	public static void main(String[] args) throws Exception {
		Keystone keystone = new Keystone(ExamplesConfiguration.KEYSTONE_AUTH_URL);		
		//access with unscoped token
		Access access = keystone.tokens().authenticate(
				new UsernamePassword(ExamplesConfiguration.KEYSTONE_USERNAME, ExamplesConfiguration.KEYSTONE_PASSWORD))
				.execute();
		
		//use the token in the following requests
		keystone.setTokenProvider(new OpenStackSimpleTokenProvider(access.getToken().getId()));
		
		Tenants tenants = keystone.tenants().list().execute();
		
		//try to exchange token using the first tenant
		if(tenants.getList().size() > 0) {
			
			access = keystone.tokens().authenticate(new TokenAuthentication(access.getToken().getId())).withTenantId(tenants.getList().get(0).getId()).execute();
			
			Swift swift = new Swift(KeystoneUtils.findEndpointURL(access.getServiceCatalog(), "object-store", null, "public"));
			swift.setTokenProvider(new OpenStackSimpleTokenProvider(access.getToken().getId()));
		
			//swiftClient.execute(new DeleteContainer("navidad2"));
			
			swift.containers().create("navidad2").execute();
			
			System.out.println(swift.containers().list());
			
			ObjectForUpload upload = new ObjectForUpload();
			upload.setContainer("navidad2");
			upload.setName("example2");
			upload.setInputStream(new FileInputStream(TEST_FILE));
			swift.containers().container("navidad2").upload(upload).execute();
			
//			System.out.println(swiftClient.execute(new ListObjects("navidad2", new HashMap<String, String>() {{
//				put("path", "");
//			}})).get(0).getContentType());
			
			
			ObjectDownload download = swift.containers().container("navidad").download("example2").execute();
			write(download.getInputStream(), "example2");
		}

	}
	
	private static void write(InputStream is, String path) {
		try {
			OutputStream stream = new BufferedOutputStream(new FileOutputStream(path)); 
			int bufferSize = 1024;
			byte[] buffer = new byte[bufferSize];
			int len = 0;
			while ((len = is.read(buffer)) != -1) {
			    stream.write(buffer, 0, len);
			}
			stream.close();   
		} catch(IOException e) {
			throw new RuntimeException(e.getMessage(), e);
		}
		
	}

}