<?php

namespace Drupal\field\Tests\Views;

use Drupal\Core\Field\FieldStorageDefinitionInterface;
use Drupal\views\ViewExecutable;
use Drupal\views\Views;
use Drupal\field\Entity\FieldStorageConfig;

/**
 * Tests the field itself of the Field integration.
 *
 * @group field
 * @TODO
 *   Check a entity-type with bundles
 *   Check a entity-type without bundles
 *   Check locale:disabled, locale:enabled and locale:enabled with another language
 *   Check revisions
 */
class HandlerFieldFieldTest extends FieldTestBase {

  /**
   * {@inheritdoc}
   */
  public static $modules = ['node', 'field_test'];

  /**
   * Views used by this test.
   *
   * @var array
   */
  public static $testViews = ['test_view_fieldapi'];

  /**
   * Test nodes.
   *
   * @var \Drupal\node\NodeInterface[]
   */
  public $nodes;

  /**
   * {@inheritdoc}
   */
  protected function setUp() {
    parent::setUp();

    // Setup basic fields.
    $this->setUpFieldStorages(3);

    // Setup a field with cardinality > 1.
    $this->fieldStorages[3] = FieldStorageConfig::create([
      'field_name' => 'field_name_3',
      'entity_type' => 'node',
      'type' => 'string',
      'cardinality' => FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED,
    ]);
    $this->fieldStorages[3]->save();
    // Setup a field that will have no value.
    $this->fieldStorages[4] = FieldStorageConfig::create([
      'field_name' => 'field_name_4',
      'entity_type' => 'node',
      'type' => 'string',
      'cardinality' => FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED,
    ]);
    $this->fieldStorages[4]->save();

    // Setup a text field.
    $this->fieldStorages[5] = FieldStorageConfig::create([
      'field_name' => 'field_name_5',
      'entity_type' => 'node',
      'type' => 'text',
    ]);
    $this->fieldStorages[5]->save();

    // Setup a text field with access control.
    // @see field_test_entity_field_access()
    $this->fieldStorages[6] = FieldStorageConfig::create([
      'field_name' => 'field_no_view_access',
      'entity_type' => 'node',
      'type' => 'text',
    ]);
    $this->fieldStorages[6]->save();

    $this->setUpFields();

    // Create some nodes.
    $this->nodes = [];
    for ($i = 0; $i < 3; $i++) {
      $edit = ['type' => 'page'];

      foreach ([0, 1, 2, 5] as $key) {
        $field_storage = $this->fieldStorages[$key];
        $edit[$field_storage->getName()][0]['value'] = $this->randomMachineName(8);
      }
      // Add a hidden value for the no-view field.
      $edit[$this->fieldStorages[6]->getName()][0]['value'] = 'ssh secret squirrel';
      for ($j = 0; $j < 5; $j++) {
        $edit[$this->fieldStorages[3]->getName()][$j]['value'] = $this->randomMachineName(8);
      }
      // Set this field to be empty.
      $edit[$this->fieldStorages[4]->getName()] = [['value' => NULL]];

      $this->nodes[$i] = $this->drupalCreateNode($edit);
    }

    $this->container->get('views.views_data')->clear();
  }

  /**
   * Sets up the testing view with random field data.
   *
   * @param \Drupal\views\ViewExecutable $view
   *   The view to add field data to.
   */
  protected function prepareView(ViewExecutable $view) {
    $view->storage->invalidateCaches();
    $view->initDisplay();
    foreach ($this->fieldStorages as $field_storage) {
      $field_name = $field_storage->getName();
      $view->display_handler->options['fields'][$field_name]['id'] = $field_name;
      $view->display_handler->options['fields'][$field_name]['table'] = 'node__' . $field_name;
      $view->display_handler->options['fields'][$field_name]['field'] = $field_name;
    }
  }

  public function testFieldRender() {
    $this->_testSimpleFieldRender();
    $this->_testInaccessibleFieldRender();
    $this->_testFormatterSimpleFieldRender();
    $this->_testMultipleFieldRender();
  }

  public function _testSimpleFieldRender() {
    $view = Views::getView('test_view_fieldapi');
    $this->prepareView($view);
    $this->executeView($view);

    // Tests that the rendered fields match the actual value of the fields.
    for ($i = 0; $i < 3; $i++) {
      for ($key = 0; $key < 2; $key++) {
        $field_name = $this->fieldStorages[$key]->getName();
        $rendered_field = $view->style_plugin->getField($i, $field_name);
        $expected_field = $this->nodes[$i]->$field_name->value;
        $this->assertEqual($rendered_field, $expected_field);
      }
    }
  }

  public function _testInaccessibleFieldRender() {
    $view = Views::getView('test_view_fieldapi');
    $this->prepareView($view);
    $this->executeView($view);

    // Check that the field handler for the hidden field is correctly removed
    // from the display.
    // @see https://www.drupal.org/node/2382931
    $this->assertFalse(array_key_exists('field_no_view_access', $view->field));

    // Check that the access-denied field is not visible.
    for ($i = 0; $i < 3; $i++) {
      $field_name = $this->fieldStorages[6]->getName();
      $rendered_field = $view->style_plugin->getField($i, $field_name);
      $this->assertFalse($rendered_field, 'Hidden field not rendered');
    }
  }

  /**
   * Tests that fields with formatters runs as expected.
   */
  public function _testFormatterSimpleFieldRender() {
    $view = Views::getView('test_view_fieldapi');
    $this->prepareView($view);
    $view->displayHandlers->get('default')->options['fields'][$this->fieldStorages[5]->getName()]['type'] = 'text_trimmed';
    $view->displayHandlers->get('default')->options['fields'][$this->fieldStorages[5]->getName()]['settings'] = [
      'trim_length' => 3,
    ];
    $this->executeView($view);

    // Make sure that the formatter works as expected.
    // @TODO: actually there should be a specific formatter.
    for ($i = 0; $i < 2; $i++) {
      $rendered_field = $view->style_plugin->getField($i, $this->fieldStorages[5]->getName());
      $this->assertEqual(strlen(html_entity_decode($rendered_field)), 3);
    }
  }

  public function _testMultipleFieldRender() {
    $view = Views::getView('test_view_fieldapi');
    $field_name = $this->fieldStorages[3]->getName();

    // Test delta limit.
    $this->prepareView($view);
    $view->displayHandlers->get('default')->options['fields'][$field_name]['group_rows'] = TRUE;
    $view->displayHandlers->get('default')->options['fields'][$field_name]['delta_limit'] = 3;
    $this->executeView($view);

    for ($i = 0; $i < 3; $i++) {
      $rendered_field = $view->style_plugin->getField($i, $field_name);
      $items = [];
      $pure_items = $this->nodes[$i]->{$field_name}->getValue();
      $pure_items = array_splice($pure_items, 0, 3);
      foreach ($pure_items as $j => $item) {
        $items[] = $pure_items[$j]['value'];
      }
      $this->assertEqual($rendered_field, implode(', ', $items), 'The amount of items is limited.');
    }

    // Test that an empty field is rendered without error.
    $view->style_plugin->getField(4, $this->fieldStorages[4]->getName());
    $view->destroy();

    // Test delta limit + offset
    $this->prepareView($view);
    $view->displayHandlers->get('default')->options['fields'][$field_name]['group_rows'] = TRUE;
    $view->displayHandlers->get('default')->options['fields'][$field_name]['delta_limit'] = 3;
    $view->displayHandlers->get('default')->options['fields'][$field_name]['delta_offset'] = 1;
    $this->executeView($view);

    for ($i = 0; $i < 3; $i++) {
      $rendered_field = $view->style_plugin->getField($i, $field_name);
      $items = [];
      $pure_items = $this->nodes[$i]->{$field_name}->getValue();
      $pure_items = array_splice($pure_items, 1, 3);
      foreach ($pure_items as $j => $item) {
        $items[] = $pure_items[$j]['value'];
      }
      $this->assertEqual($rendered_field, implode(', ', $items), 'The amount of items is limited and the offset is correct.');
    }
    $view->destroy();

    // Test delta limit + reverse.
    $this->prepareView($view);
    $view->displayHandlers->get('default')->options['fields'][$field_name]['delta_offset'] = 0;
    $view->displayHandlers->get('default')->options['fields'][$field_name]['group_rows'] = TRUE;
    $view->displayHandlers->get('default')->options['fields'][$field_name]['delta_limit'] = 3;
    $view->displayHandlers->get('default')->options['fields'][$field_name]['delta_reversed'] = TRUE;
    $this->executeView($view);

    for ($i = 0; $i < 3; $i++) {
      $rendered_field = $view->style_plugin->getField($i, $field_name);
      $items = [];
      $pure_items = $this->nodes[$i]->{$field_name}->getValue();
      array_splice($pure_items, 0, -3);
      $pure_items = array_reverse($pure_items);
      foreach ($pure_items as $j => $item) {
        $items[] = $pure_items[$j]['value'];
      }
      $this->assertEqual($rendered_field, implode(', ', $items), 'The amount of items is limited and they are reversed.');
    }
    $view->destroy();

    // Test delta first last.
    $this->prepareView($view);
    $view->displayHandlers->get('default')->options['fields'][$field_name]['group_rows'] = TRUE;
    $view->displayHandlers->get('default')->options['fields'][$field_name]['delta_limit'] = 0;
    $view->displayHandlers->get('default')->options['fields'][$field_name]['delta_first_last'] = TRUE;
    $view->displayHandlers->get('default')->options['fields'][$field_name]['delta_reversed'] = FALSE;
    $this->executeView($view);

    for ($i = 0; $i < 3; $i++) {
      $rendered_field = $view->style_plugin->getField($i, $field_name);
      $items = [];
      $pure_items = $this->nodes[$i]->{$field_name}->getValue();
      $items[] = $pure_items[0]['value'];
      $items[] = $pure_items[4]['value'];
      $this->assertEqual($rendered_field, implode(', ', $items), 'Items are limited to first and last.');
    }
    $view->destroy();

    // Test delta limit + custom separator.
    $this->prepareView($view);
    $view->displayHandlers->get('default')->options['fields'][$field_name]['delta_first_last'] = FALSE;
    $view->displayHandlers->get('default')->options['fields'][$field_name]['delta_limit'] = 3;
    $view->displayHandlers->get('default')->options['fields'][$field_name]['group_rows'] = TRUE;
    $view->displayHandlers->get('default')->options['fields'][$field_name]['separator'] = ':';
    $this->executeView($view);

    for ($i = 0; $i < 3; $i++) {
      $rendered_field = $view->style_plugin->getField($i, $field_name);
      $items = [];
      $pure_items = $this->nodes[$i]->{$field_name}->getValue();
      $pure_items = array_splice($pure_items, 0, 3);
      foreach ($pure_items as $j => $item) {
        $items[] = $pure_items[$j]['value'];
      }
      $this->assertEqual($rendered_field, implode(':', $items), 'The amount of items is limited and the custom separator is correct.');
    }
    $view->destroy();

    // Test separator with HTML, ensure it is escaped.
    $this->prepareView($view);
    $view->displayHandlers->get('default')->options['fields'][$field_name]['group_rows'] = TRUE;
    $view->displayHandlers->get('default')->options['fields'][$field_name]['delta_limit'] = 3;
    $view->displayHandlers->get('default')->options['fields'][$field_name]['separator'] = '<h2>test</h2>';
    $this->executeView($view);

    for ($i = 0; $i < 3; $i++) {
      $rendered_field = $view->style_plugin->getField($i, $field_name);
      $items = [];
      $pure_items = $this->nodes[$i]->{$field_name}->getValue();
      $pure_items = array_splice($pure_items, 0, 3);
      foreach ($pure_items as $j => $item) {
        $items[] = $pure_items[$j]['value'];
      }
      $this->assertEqual($rendered_field, implode('<h2>test</h2>', $items), 'The custom separator is correctly escaped.');
    }
    $view->destroy();
  }

}