package proto;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.tapestry.IPage;
import org.apache.tapestry.IRequestCycle;
import org.apache.tapestry.annotations.*;
import org.apache.tapestry.event.PageBeginRenderListener;
import org.apache.tapestry.event.PageEvent;
import org.apache.tapestry.form.TextField;
import org.apache.tapestry.form.Checkbox;
import org.apache.tapestry.services.CookieSource;
import org.apache.tapestry.valid.ValidationDelegate;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.tapestry.annotations.InjectPage;
import org.apache.tapestry.annotations.Meta;
import org.apache.tapestry.html.BasePage;

import proto.exception.ExceptionFormatter;

import common.crypto.*;

@Meta("anonymous-access=true")
public abstract class Login extends BasePage implements PageBeginRenderListener {

	public abstract String getEmailAddress();

	public abstract void setEmailAddress(String value);

	public abstract String getPassword();

	public abstract void setPassword(String value);

	@Persist
	@InitialValue("true")
	public abstract boolean isRememberMe();

	public IPage onFormSubmit(IRequestCycle cycle) {
		try {
			CookieSource cookieSrc = getCookieSource();
			ICrypto cryptoService = getCryptoService();
			if (isRememberMe()) {
				cookieSrc.writeCookieValue(EMAILADDRESS_COOKIE_NAME,
						getPerson().getEmailAddress(), COOKIE_MAX_AGE);
				cookieSrc.writeCookieValue(PASSWORD_COOKIE_NAME, getPerson()
						.getPassword(), COOKIE_MAX_AGE);
			} else {
				cookieSrc.removeCookieValue(EMAILADDRESS_COOKIE_NAME);
				cookieSrc.removeCookieValue(PASSWORD_COOKIE_NAME);
				setEmailAddress("");
				setPassword("");
			}

			/**
			 * Do Model Object Stuff
			 */
		} catch (Exception e) {
			LOG.error("** Exception was: " + e.getMessage());
			LOG.error("** Stack trace follows...");
			LOG.error(ExceptionFormatter.toString(e));
			return getLoginPage();
		}

		return getHomePage();
	}

	public IPage onFormCancel(IRequestCycle cycle) {
		return getHomePage();
	}

	public void pageBeginRender(PageEvent event) {
		CookieSource cookieSrc = getCookieSource();
		ICrypto cryptoService = getCryptoService();
		try {
			String cookieVal = getCookieSource().readCookieValue(
					EMAILADDRESS_COOKIE_NAME);
			Checkbox checkbox = getRememberMeComponent();
			Person p = getPerson();
			if (p == null) {
				p = new Person();
				setPerson(p);
			}

			if (!"".equals(cookieVal)) {
				// if we see a valid cookie, then read it
				getPerson().setEmailAddress(
						getCookieSource().readCookieValue(
								EMAILADDRESS_COOKIE_NAME));
				getPerson()
						.setPassword(
								getCookieSource().readCookieValue(
										PASSWORD_COOKIE_NAME));
			} else {
				if ("".equals(cookieVal)) {
					// if cookie blank, then nuke it
					getCookieSource().removeCookieValue(
							EMAILADDRESS_COOKIE_NAME);
					getCookieSource().removeCookieValue(PASSWORD_COOKIE_NAME);
					getPerson().setEmailAddress("");
					getPerson().setPassword("");
					checkbox.setValue(false);
				}
			}

		} catch (Exception e) {
			LOG.error("** Exception was: " + e.getMessage());
			LOG.error("** Stack trace follows...");
			LOG.error(ExceptionFormatter.toString(e));
		}
	}

	private static final String EMAILADDRESS_COOKIE_NAME = "Login.emailAddress";

	private static final String PASSWORD_COOKIE_NAME = "Login.password";

	private static final int COOKIE_MAX_AGE = 60 * 60 * 24 * 7;

	static public final Log LOG = LogFactory.getLog(TapBasePage.class);

	@InjectObject("infrastructure:cookieSource")
	public abstract CookieSource getCookieSource();

	public abstract ICrypto getCryptoService();

	@Bean
	public abstract ValidationDelegate getValidationDelegate();

	@Persist("session")
	public abstract Person getPerson();

	public abstract void setPerson(Person value);

	@InjectComponent("rememberMe")
	public abstract Checkbox getRememberMeComponent();

	@InjectPage("Home")
	public abstract Home getHomePage();

	@InjectPage("Login")
	public abstract Login getLoginPage();
}