import java.sql.SQLException;
import java.util.Collection;

import com.vaadin.ui.Button;
import com.vaadin.ui.CheckBox;
import com.vaadin.ui.ProgressIndicator;
import com.vaadin.ui.TextField;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.Button.ClickListener;

public class Login extends BaseTemplateComponent {

	private Button ok;
	private CookieManager cookieManager;
	ProgressIndicator poller;
	boolean keepRunning;
	
	@Override
	public void initUI() {
		setWidth("100%");
		
		final TextField username   = new TextField();
		final TextField password   = new TextField();
		final CheckBox  saveCookie = new CheckBox();
		cookieManager = new CookieManager(true);
		poller = new ProgressIndicator();
		poller.addStyleName("invisible");
		poller.setPollingInterval(300);
		
		password.setSecret(true);
		
		addComponent(username,      "username");
		addComponent(password,      "password");
		addComponent(saveCookie,    "saveCookie");
		addComponent(cookieManager, "cookieMgr");
		addComponent(poller,        "poller");
		
		ok = new Button("Login");
		addComponent(ok, "okbutton");
		
		ok.addListener(new ClickListener() {
			public void buttonClick(ClickEvent event) {
				keepRunning = false;
				
				if (saveCookie.booleanValue()) {
					cookieManager.setCookie("saved", "yes");
					cookieManager.setCookie("hub_user", username.toString());
					cookieManager.setCookie("hub_pass", EncryptDecryptUtil.encrypt(password.toString()));
				} else {
					cookieManager.setCookie("saved", "no");
					cookieManager.setCookie("hub_user", "");
					cookieManager.setCookie("hub_pass", "");
				}
				
				doLogin(username.toString(), password.toString());
			}
		});
		
		cookieManager.addListener(new UpdateListener() {
			@Override
			public void cookiesUpdated(CookieManager clientCookies) {
				String saved = clientCookies.getCookie("saved");
				if ("yes".equals(saved)) {
					keepRunning = false;
					String user = clientCookies.getCookie("hub_user");
					String pass = clientCookies.getCookie("hub_pass");
					
					pass = EncryptDecryptUtil.decrypt(pass);
					username.setValue(user);
					password.setValue(pass);
					saveCookie.setValue(true);
					poller.setValue(0.5f);
					poller.setVisible(true);
				}
			}
		});
		
		keepRunning = true;
		
		ReadCookiesThread wt = new ReadCookiesThread();
		wt.start();
		
	}
	
	private JiraSession session;
	private User user;
	
	private void doLogin(String jiraId, String pass) {
		try {
			session = new JiraSession(JiraSession.JIRA_URL, jiraId, pass, false);
			user = getOrCreateUser(jiraId);

			if (user == null) {
				TagGrandCentralApp.showError("Login Error", "User not found");
			} else {
				keepRunning = true;
				ok.setEnabled(false);
				poller.setVisible(true);
				SaveCookiesThread th = new SaveCookiesThread();
				th.start();
			}
		} catch (Exception e) {
			TagGrandCentralApp.showError("Login Error", e);
		}
	}
	
	
	public static User getOrCreateUser(String jiraName) throws SQLException {
		Collection<DBObject> allUsers = CacheManager.getUsers().getUnsorted();
		User found = null;
		
		for (DBObject userObj : allUsers) {
			User u = (User) userObj;
			
			if (u.getJiraUserId().equalsIgnoreCase(jiraName)) {
				found = u;
			}
		}
		
		if (found == null) {
			found = new User();
			found.setJiraUserId(jiraName);
			AllDaos.USER_DAO.store(found);
		}
		
		return found;
	}


	
	class ReadCookiesThread extends Thread {
		public void run() {
			float current = 0.0f;
			while (keepRunning) {
				// Do some "work"
				try {
					sleep(250); // Sleep for 500 milliseconds
				} catch (InterruptedException e) {
				}

				current += 0.10;
				//username.setValue(current);
				poller.setValue(current);

				cookieManager.setCookie("__dummy__", "__dummy__");
				cookieManager.loadFromClient();
				
				if (current > 1) {
					keepRunning = false;
					poller.setVisible(false);
				}
			}
		}
	}
	
	class SaveCookiesThread extends Thread {
		public void run() {
			float start = 0.5f;
			while (keepRunning) {
				start = start + 0.2f;
				poller.setValue(start);
				
				try {
					sleep(250); // Sleep for 500 milliseconds
				} catch (InterruptedException e) {
				}
				
				if (start > 1) {
					keepRunning = false;
					poller.setVisible(false);
				}
			}
			
			((TagGrandCentralApp)(poller.getApplication())).onLogin(session, user);
		}
	}
}