package org.expressolivre.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;
	}

	/**
	 * Procura e clica em um elemento de tela.
	 * 
	 * @param by
	 */
	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.waitForElement(By.id(id));
		this.clickElement(By.id(id));
	}

	/**
	 * Aguarda ate o elemento aparecer na tela.
	 * 
	 * @param by
	 *            Element a ser pesquisado, podendo ser por id, xpath, name.
	 */
	public void waitForElement(By by) {
		isDisplayed(this.waitFindElement(by, 5000, 1000));
	}

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

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

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

	public boolean isNotDisplayed(RenderedWebElement e) {
		// Up to 10 times
		for (int i = 0; i < 10; 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) {
		waitForElement(By.id(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();
					}
				}
			}
		}
	}

	/**
	 * Seta o valor de uma combo box.
	 * 
	 * @param element
	 *            Combo box.
	 * @param value
	 *            Valor a ser selecionado.
	 */
	public boolean setComboValue(WebElement element, String value) {

		try {
			List<WebElement> options = element.findElements(By
					.tagName("option"));
			for (WebElement option : options) {
				if (option.getText().equals(value)) {
					option.setSelected();
					return true;
				}
			}
		} catch (NoSuchElementException nsee) {
			System.out.println("Warning: ELEMENTO NAO ENCONTRADO!");
			return false;
		}

		// TODO Rever o tratamento da excecao quando um valor nao for encontrado
		// na combobox.

		try {
			throw new Exception("Valor " + value + " não encontrado em "
					+ element);
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return false;
	}

	public String getComboValue(WebElement element) {
		List<WebElement> options = element.findElements(By.tagName("option"));
		for (WebElement option : options) {
			if (option.isSelected()) {
				return option.getText();
			}
		}
		return null;
	}

	/**
	 * Verifica se um element esta presente na tela.
	 * 
	 * @param by
	 * @return
	 */
	public Boolean isElementPresent(By by) {
		boolean find = true;
		try {
			driver.findElement(by);
		} catch (NoSuchElementException nsee) {
			find = false;
		}
		return find;
	}

}