package br.gov.serpro.expresso.cte.pages.common;

import java.util.List;
import java.util.concurrent.TimeUnit;

import org.openqa.selenium.By;
import org.openqa.selenium.NoSuchElementException;
import org.openqa.selenium.RenderedWebElement;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;

/**
 * @author L.F.Estivalet (Serpro)
 * 
 *         Created on Jan 4, 2011 at 3:52:33 PM
 * 
 */
public class Page {
	/** Implementacao do driver a ser utilizado no teste da pagina. */
	protected WebDriver driver;

	/**
	 * @param driver
	 *            Implementacao do driver (Firefox, IE, etc)
	 */
	public Page(WebDriver driver) {
		this.driver = driver;
	}

	/**
	 * Clica em um elemento.
	 * 
	 * @param id
	 *            Id do elemento a ser clicado.
	 */
	public void clickElement(String id) {
		driver.findElement(By.id(id)).click();
	}

	public void clickElement(By by) {
		driver.findElement(by).click();
	}

	/**
	 * Aguarda elemento aparecer e depois clica.
	 * 
	 * @param id
	 *            Id do elemento a ser clicado.
	 */
	public void findAndClickElement(String id) {
		this.waitForElementById(id);
		this.clickElement(id);
	}

	/**
	 * Aguarda por um elemento.
	 * 
	 * @param id
	 *            Id do elemento a ser aguardado.
	 */
	public void waitForElementById(String id) {
		isDisplayed(this.waitFindElement(By.id(id), 5000, 1000));
	}

	/**
	 * @param name
	 */
	public void waitForElementByName(String name) {
		isDisplayed(this.waitFindElement(By.name(name), 5000, 1000));
	}

	/**
	 * @param xpath
	 */
	public void waitForElementByXpath(String xpath) {
		isDisplayed(this.waitFindElement(By.xpath(xpath), 5000, 1000));
	}

	/**
	 * @param ms
	 */
	public void waitAMoment(long ms) {
		driver.manage().timeouts().implicitlyWait(ms, TimeUnit.MILLISECONDS);
	}

	/**
	 * @param e
	 */
	public boolean isDisplayed(RenderedWebElement e) {
		System.out.println("starting tentatives");
		// Up to 10 times
		for (int i = 0; i < 10; i++) {
			System.out.println("tentative " + i);
			// Check whether our element is visible yet
			if (e.isDisplayed()) {
				return true;
			}

			try {
				Thread.sleep(1000);
			} catch (InterruptedException ex) {
				// Try again
			}
		}
		return false;
	}

	/**
	 * @param id
	 * @return
	 */
	public String getElementContent(String id) {
		return driver.findElement(By.id(id)).getText();
	}

	public String getDisplayedElementContent(String id) {
		waitForElementById(id);
		return driver.findElement(By.id(id)).getText();
	}

	public RenderedWebElement waitFindElement(By by, long timeout, long interval) {
		long start = System.currentTimeMillis();
		while (true) {
			try {
				return (RenderedWebElement) driver.findElement(by);
			} catch (NoSuchElementException nse) {
				if (System.currentTimeMillis() - start >= timeout) {
					throw new Error("Timeout reached and element[" + by
							+ "]not found");
				} else {
					try {
						synchronized (this) {
							wait(interval);
						}
					} catch (InterruptedException e) {
						e.printStackTrace();
					}
				}
			}
		}
	}

	/**
	 * @param element
	 * @param value
	 */
	public void setComboValue(WebElement element, String value) {
		List<WebElement> options = element.findElements(By.tagName("option"));
		for (WebElement option : options) {
			if (option.getText().equals(value)) {
				option.setSelected();
				break;
			}
		}
	}
}