<?php

namespace Drupal\Tests\twig_tweak\Functional;

use Drupal\Core\Link;
use Drupal\Core\Url;
use Drupal\file\Entity\File;
use Drupal\responsive_image\Entity\ResponsiveImageStyle;
use Drupal\Core\Render\Markup;
use Drupal\Tests\BrowserTestBase;
use Drupal\user\Entity\Role;

/**
 * A test for Twig extension.
 *
 * @group twig_tweak
 */
class TwigTweakTest extends BrowserTestBase {

  /**
   * {@inheritdoc}
   */
  public static $modules = [
    'twig_tweak',
    'twig_tweak_test',
    'views',
    'node',
    'block',
    'image',
    'responsive_image',
  ];

  /**
   * {@inheritdoc}
   */
  public function setUp() {
    parent::setUp();
    $this->createContentType(['type' => 'page']);
    $this->createNode(['title' => 'Alpha']);
    $this->createNode(['title' => 'Beta']);
    $this->createNode(['title' => 'Gamma']);

    file_unmanaged_copy(DRUPAL_ROOT . '/core/misc/druplicon.png', 'public://druplicon.png');
    $file = File::create([
      'uri' => 'public://druplicon.png',
      'filename' => 'druplicon.png',
      'uuid' => 'b2c22b6f-7bf8-4da4-9de5-316e93487518',
      'status' => 1,
    ]);
    $file->save();

    ResponsiveImageStyle::create([
      'id' => 'example',
      'label' => 'Example',
      'breakpoint_group' => 'responsive_image',
    ])->save();

  }

  /**
   * Tests output produced by the Twig extension.
   */
  public function testOutput() {
    // Title block rendered through drupal_region() is cached by some reason.
    \Drupal::service('cache_tags.invalidator')->invalidateTags(['block_view']);
    $this->drupalGet('<front>');

    // Test default views display.
    $xpath = '//div[@class = "tt-view-default"]';
    $xpath .= '//div[contains(@class, "view-twig-tweak-test") and contains(@class, "view-display-id-default")]';
    $xpath .= '/div[@class = "view-content"]//ul[count(./li) = 3]/li';
    $this->assertByXpath($xpath . '//a[contains(@href, "/node/1") and text() = "Alpha"]');
    $this->assertByXpath($xpath . '//a[contains(@href, "/node/2") and text() = "Beta"]');
    $this->assertByXpath($xpath . '//a[contains(@href, "/node/3") and text() = "Gamma"]');

    // Test page_1 view display.
    $xpath = '//div[@class = "tt-view-page_1"]';
    $xpath .= '//div[contains(@class, "view-twig-tweak-test") and contains(@class, "view-display-id-page_1")]';
    $xpath .= '/div[@class = "view-content"]//ul[count(./li) = 3]/li';
    $this->assertByXpath($xpath . '//a[contains(@href, "/node/1") and text() = "Alpha"]');
    $this->assertByXpath($xpath . '//a[contains(@href, "/node/2") and text() = "Beta"]');
    $this->assertByXpath($xpath . '//a[contains(@href, "/node/3") and text() = "Gamma"]');

    // Test view argument.
    $xpath = '//div[@class = "tt-view-page_1-with-argument"]';
    $xpath .= '//div[contains(@class, "view-twig-tweak-test")]';
    $xpath .= '/div[@class = "view-content"]//ul[count(./li) = 1]/li';
    $this->assertByXpath($xpath . '//a[contains(@href, "/node/1") and text() = "Alpha"]');

    // Test view result.
    $xpath = '//div[@class = "tt-view-result" and text() = 3]';
    $this->assertByXpath($xpath);

    // Test block.
    $xpath = '//div[@class = "tt-block"]';
    $xpath .= '/img[contains(@src, "/core/themes/classy/logo.svg") and @alt="Home"]';
    $this->assertByXpath($xpath);

    // Test block with wrapper.
    $xpath = '//div[@class = "tt-block-with-wrapper"]';
    $xpath .= '/div[@class = "block block-system block-system-branding-block"]';
    $xpath .= '/h2[text() = "Branding"]';
    $xpath .= '/following-sibling::a[img[contains(@src, "/core/themes/classy/logo.svg") and @alt="Home"]]';
    $xpath .= '/following-sibling::div[@class = "site-name"]/a';
    $this->assertByXpath($xpath);

    // Test region.
    $xpath = '//div[@class = "tt-region"]/div[@class = "region region-sidebar-first"]';
    $xpath .= '/div[contains(@class, "block-page-title-block") and h1[@class="page-title" and text() = "Log in"]]';
    $xpath .= '/following-sibling::div[contains(@class, "block-system-powered-by-block")]/span[. = "Powered by Drupal"]';
    $this->assertByXpath($xpath);

    // Test entity default view mode.
    $xpath = '//div[@class = "tt-entity-default"]';
    $xpath .= '/article[contains(@class, "node") and not(contains(@class, "node--view-mode-teaser"))]';
    $xpath .= '/h2/a/span[text() = "Alpha"]';
    $this->assertByXpath($xpath);

    // Test entity teaser view mode.
    $xpath = '//div[@class = "tt-entity-teaser"]';
    $xpath .= '/article[contains(@class, "node") and contains(@class, "node--view-mode-teaser")]';
    $xpath .= '/h2/a/span[text() = "Alpha"]';
    $this->assertByXpath($xpath);

    // Test loading entity from url.
    $xpath = '//div[@class = "tt-entity-from-url" and not(text())]';
    $this->assertByXpath($xpath);
    $this->drupalGet('/node/2');
    $xpath = '//div[@class = "tt-entity-from-url"]';
    $xpath .= '/article[contains(@class, "node")]';
    $xpath .= '/h2/a/span[text() = "Beta"]';
    $this->assertByXpath($xpath);

    // Test access to entity add form.
    $xpath = '//div[@class = "tt-entity-add-form"]/form';
    $this->assertSession()->elementNotExists('xpath', $xpath);

    // Test access to entity edit form.
    $xpath = '//div[@class = "tt-entity-edit-form"]/form';
    $this->assertSession()->elementNotExists('xpath', $xpath);

    // Grant require permissions and test the forms again.
    $permissions = ['create page content', 'edit any page content'];
    $this->grantPermissions(Role::load(Role::ANONYMOUS_ID), $permissions);
    $this->drupalGet('/node/2');

    // Test entity add form.
    $xpath = '//div[@class = "tt-entity-add-form"]/form';
    $xpath .= '//input[@name = "title[0][value]" and @value = ""]';
    $xpath .= '/../../../div/input[@type = "submit" and @value = "Save"]';
    $this->assertByXpath($xpath);

    // Test entity edit form.
    $xpath = '//div[@class = "tt-entity-edit-form"]/form';
    $xpath .= '//input[@name = "title[0][value]" and @value = "Alpha"]';
    $xpath .= '/../../../div/input[@type = "submit" and @value = "Save"]';
    $this->assertByXpath($xpath);

    // Test field.
    $xpath = '//div[@class = "tt-field"]/div[contains(@class, "field--name-body")]/p[text() != ""]';
    $this->assertByXpath($xpath);

    // Test menu (default).
    $xpath = '//div[@class = "tt-menu-default"]/ul[@class = "menu"]/li/a[text() = "Link 1"]/../ul[@class = "menu"]/li/ul[@class = "menu"]/li/a[text() = "Link 3"]';
    $this->assertByXpath($xpath);

    // Test menu (level).
    $xpath = '//div[@class = "tt-menu-level"]/ul[@class = "menu"]/li/a[text() = "Link 2"]/../ul[@class = "menu"]/li/a[text() = "Link 3"]';
    $this->assertByXpath($xpath);

    // Test menu (depth).
    $xpath = '//div[@class = "tt-menu-depth"]/ul[@class = "menu"]/li[not(ul)]/a[text() = "Link 1"]';
    $this->assertByXpath($xpath);

    // Test form.
    $xpath = '//div[@class = "tt-form"]/form[@class="system-cron-settings"]/input[@type = "submit" and @value = "Run cron"]';
    $this->assertByXpath($xpath);

    // Test image by FID.
    $xpath = '//div[@class = "tt-image-by-fid"]/img[contains(@src, "/files/druplicon.png")]';
    $this->assertByXpath($xpath);

    // Test image by URI.
    $xpath = '//div[@class = "tt-image-by-uri"]/img[contains(@src, "/files/druplicon.png")]';
    $this->assertByXpath($xpath);

    // Test image by UUID.
    $xpath = '//div[@class = "tt-image-by-uuid"]/img[contains(@src, "/files/druplicon.png")]';
    $this->assertByXpath($xpath);

    // Test image with style.
    $xpath = '//div[@class = "tt-image-with-style"]/img[contains(@src, "/files/styles/thumbnail/public/druplicon.png")]';
    $this->assertByXpath($xpath);

    // Test image with responsive style.
    $xpath = '//div[@class = "tt-image-with-responsive-style"]/picture/img[contains(@src, "/files/druplicon.png")]';
    $this->assertByXpath($xpath);

    // Test token.
    $xpath = '//div[@class = "tt-token" and text() = "Drupal"]';
    $this->assertByXpath($xpath);

    // Test token with context.
    $xpath = '//div[@class = "tt-token-data" and text() = "Beta"]';
    $this->assertByXpath($xpath);

    // Test config.
    $xpath = '//div[@class = "tt-config" and text() = "Anonymous"]';
    $this->assertByXpath($xpath);

    // Test page title.
    $xpath = '//div[@class = "tt-title" and text() = "Beta"]';
    $this->assertByXpath($xpath);

    // Test URL.
    $url = Url::fromUserInput('/node/1', ['absolute' => TRUE])->toString();
    $xpath = sprintf('//div[@class = "tt-url" and text() = "%s"]', $url);
    $this->assertByXpath($xpath);

    // Test link.
    $url = Url::fromUserInput('/node/1/edit', ['absolute' => TRUE]);
    $link = Link::fromTextAndUrl('Edit', $url)->toString();
    $xpath = '//div[@class = "tt-link"]';
    self::assertEquals($link, trim($this->xpath($xpath)[0]->getHtml()));

    // Test link with HTML.
    $text = Markup::create('<b>Edit</b>');
    $url = Url::fromUserInput('/node/1/edit', ['absolute' => TRUE]);
    $link = Link::fromTextAndUrl($text, $url)->toString();
    $xpath = '//div[@class = "tt-link-html"]';
    self::assertEquals($link, trim($this->xpath($xpath)[0]->getHtml()));

    // Test status messages.
    $xpath = '//div[@class = "tt-messages"]//div[contains(@class, "messages--status") and contains(., "Hello world!")]';
    $this->assertByXpath($xpath);

    // Test breadcrumb.
    $xpath = '//div[@class = "tt-breadcrumb"]/nav[@class = "breadcrumb"]/ol/li/a[text() = "Home"]';
    $this->assertByXpath($xpath);

    // Test protected link.
    $xpath = '//div[@class = "tt-link-access"]';
    self::assertEquals('', trim($this->xpath($xpath)[0]->getHtml()));

    // Test token replacement.
    $xpath = '//div[@class = "tt-token-replace" and text() = "Site name: Drupal"]';
    $this->assertByXpath($xpath);

    // Test preg replacement.
    $xpath = '//div[@class = "tt-preg-replace" and text() = "FOO-bar"]';
    $this->assertByXpath($xpath);

    // Test image style.
    $xpath = '//div[@class = "tt-image-style" and contains(text(), "styles/thumbnail/public/images/ocean.jpg")]';
    $this->assertByXpath($xpath);

    // Test transliteration.
    $xpath = '//div[@class = "tt-transliterate" and contains(text(), "Privet!")]';
    $this->assertByXpath($xpath);

    // Test text format.
    $xpath = '//div[@class = "tt-check-markup"]';
    self::assertEquals('<b>bold</b> strong', trim($this->xpath($xpath)[0]->getHtml()));

    // Test truncation.
    $xpath = '//div[@class = "tt-truncate" and text() = "Hello…"]';
    $this->assertByXpath($xpath);

    // Test 'with'.
    $xpath = '//div[@class = "tt-with"]/b[text() = "Example"]';
    $this->assertByXpath($xpath);

    // Test node view.
    $xpath = '//div[@class = "tt-node-view"]/article[contains(@class, "node--view-mode-default")]/h2[a/span[text() = "Beta"]]';
    $xpath .= '/following-sibling::footer[//h4[text() = "Member for"]]';
    $xpath .= '/following-sibling::div[@class = "node__content"]/div/p';
    $this->assertByXpath($xpath);

    // Field list view.
    $xpath = '//div[@class = "tt-field-list-view"]/span[contains(@class, "field--name-title") and text() = "Beta"]';
    $this->assertByXpath($xpath);

    // Field item view.
    $xpath = '//div[@class = "tt-field-item-view" and text() = "Beta"]';
    $this->assertByXpath($xpath);
  }

  /**
   * Checks that an element specified by a the xpath exists on the current page.
   */
  public function assertByXpath($xpath) {
    $this->assertSession()->elementExists('xpath', $xpath);
  }

  /**
   * {@inheritdoc}
   */
  protected function initFrontPage() {
    // Intentionally empty. The parent implementation does a request to the
    // front page to init cookie. This causes some troubles in rendering
    // attached Twig template because page content type is not created at that
    // moment. We can skip this step since this test does not rely on any
    // session data.
  }

}