<?php
// $Id$

class CommentTestCase extends DrupalWebTestCase {
  protected $admin_user;
  protected $web_user;
  protected $node;

  /**
   * Implementation of getInfo().
   */
  function getInfo() {
    return array(
      'name' => t('Comment functionality'),
      'description' => t('Thoroughly test comment administration and user interfaces.'),
      'group' => t('Comment'),
    );
  }

  /**
   * Implementation of setUp().
   */
  function setUp() {
    parent::setUp('comment');
    // Create users.
    $this->admin_user = $this->drupalCreateUser(array('administer content types', 'administer comments', 'administer permissions'));
    $this->web_user = $this->drupalCreateUser(array('access comments', 'post comments', 'create article content'));

    $this->drupalLogin($this->web_user);
    $this->node = $this->drupalCreateNode(array('type' => 'article'));
    $this->assertTrue($this->node, t('Article node created.'));
    $this->drupalLogout();
  }

  /**
   * Test comment interface.
   */
  function testCommentInterface() {
    // Set comments to not have subject.
    $this->drupalLogin($this->admin_user);
    $this->setCommentPreview(TRUE);
    $this->setCommentSubject(FALSE);
    $this->drupalLogout();

    // Post comment without subject.
    $this->drupalLogin($this->web_user);
    $this->drupalGet('comment/reply/' . $this->node->nid);
    $this->assertNoFieldByName('subject', '', t('Subject field not found.'));

    // Set comments to have subject and preview to required.
    $this->drupalLogout();
    $this->drupalLogin($this->admin_user);
    $this->setCommentSubject(TRUE);
    $this->setCommentPreview(TRUE);
    $this->drupalLogout();

    // Create comment that requires preview.
    $this->drupalLogin($this->web_user);
    $comment = $this->postComment($this->node, $this->randomName(), $this->randomName());
    $this->assertTrue($this->commentExists($comment), t('Comment found.'));

    // Reply to comment.
    $this->drupalGet('comment/reply/' . $this->node->nid . '/' . $comment->id);
    $reply = $this->postComment(NULL, $this->randomName(), $this->randomName());
    $this->assertTrue($this->commentExists($reply, TRUE), t('Reply found.'));

    // Edit reply.
    $this->drupalGet('comment/edit/' . $reply->id);
    $reply = $this->postComment(NULL, $this->randomName(), $this->randomName());
    $this->assertTrue($this->commentExists($reply, TRUE), t('Modified reply found.'));

    // Pager
    $this->setCommentsPerPage(2);
    $comment_new_page = $this->postComment($this->node, $this->randomName(), $this->randomName());
    $this->drupalGet('node/' . $this->node->nid);
    $this->assertTrue($this->commentExists($comment) && $this->commentExists($comment_new_page), t('Page one exists. %s'));
    $this->drupalGet('node/' . $this->node->nid, array('query' => 'page=1'));
    $this->assertTrue($this->commentExists($reply, TRUE), t('Page two exists. %s'));
    $this->setCommentsPerPage(50);

    // Delete comment and make sure that reply is also removed.
    $this->drupalLogout();
    $this->drupalLogin($this->admin_user);
    $this->deleteComment($comment);
    $this->deleteComment($comment_new_page);

    $this->drupalGet('node/' . $this->node->nid);
    $this->assertFalse($this->commentExists($comment), t('Comment not found.'));
    $this->assertFalse($this->commentExists($reply, TRUE), t('Reply not found.'));
  }

  /**
   * Test comment form on node page.
   */
  function testFormOnPage() {
    // Enabled comment form on node page.
    $this->drupalLogin($this->admin_user);
    $this->setCommentForm(TRUE);
    $this->drupalLogout();

    // Submit comment through node form.
    $this->drupalLogin($this->web_user);
    $this->drupalGet('node/' . $this->node->nid);
    $form_comment = $this->postComment(NULL, $this->randomName(), $this->randomName());
    $this->assertTrue($this->commentExists($form_comment), t('Form comment found.'));

    // Disable comment form on node page.
    $this->drupalLogout();
    $this->drupalLogin($this->admin_user);
    $this->setCommentForm(FALSE);
  }

  /**
   * Test anonymous comment functionality.
   */
  function testAnonymous() {
    $this->drupalLogin($this->admin_user);
    // Enabled anonymous user comments.
    $this->setAnonymousUserComment(TRUE, TRUE);
    $this->setCommentAnonymous('0'); // Ensure that doesn't require contact info.
    $this->drupalLogout();

    // Post anonymous comment without contact info.
    $anonymous_comment1 = $this->postComment($this->node, $this->randomName(), $this->randomName());
    $this->assertTrue($this->commentExists($anonymous_comment1), t('Anonymous comment without contact info found.'));

    // Allow contact info.
    $this->drupalLogin($this->admin_user);
    $this->setCommentAnonymous('1');
    $this->drupalLogout();

    // Post anonymous comment with contact info (optional).
    $this->drupalGet('comment/reply/' . $this->node->nid);
    $this->assertTrue($this->commentContactInfoAvailable(), t('Contact information available.'));

    $anonymous_comment2 = $this->postComment($this->node, $this->randomName(), $this->randomName());
    $this->assertTrue($this->commentExists($anonymous_comment2), t('Anonymous comment with contact info (optional) found.'));

    // Require contact info.
    $this->drupalLogin($this->admin_user);
    $this->setCommentAnonymous('2');
    $this->drupalLogout();

    // Try to post comment with contact info (required).
    $this->drupalGet('comment/reply/' . $this->node->nid);
    $this->assertTrue($this->commentContactInfoAvailable(), t('Contact information available.'));

    $anonymous_comment3 = $this->postComment($this->node, $this->randomName(), $this->randomName(), TRUE, TRUE);
    $this->assertText(t('E-mail field is required.'), t('E-mail required.')); // Name should have 'Anonymous' for value by default.
    $this->assertFalse($this->commentExists($anonymous_comment3), t('Anonymous comment with contact info (required) not found.'));

    // Post comment with contact info (required).
    $anonymous_comment3 = $this->postComment($this->node, $this->randomName(), $this->randomName(), TRUE, array('mail' => 'tester@simpletest.org'));
    $this->assertTrue($this->commentExists($anonymous_comment3), t('Anonymous comment with contact info (required) found.'));

    // Unpublish comment.
    $this->drupalLogin($this->admin_user);
    $this->performCommentOperation($anonymous_comment3, 'unpublish');

    $this->drupalGet('admin/content/comment/approval');
    $this->assertRaw('comments[' . $anonymous_comment3->id . ']', t('Comment was unpublished.'));

    // Publish comment.
    $this->performCommentOperation($anonymous_comment3, 'publish', TRUE);

    $this->drupalGet('admin/content/comment');
    $this->assertRaw('comments[' . $anonymous_comment3->id . ']', t('Comment was published.'));

    // Delete comment.
    $this->performCommentOperation($anonymous_comment3, 'delete');

    $this->drupalGet('admin/content/comment');
    $this->assertNoRaw('comments[' . $anonymous_comment3->id . ']', t('Comment was deleted.'));

    // Reset.
    $this->drupalLogin($this->admin_user);
    $this->setAnonymousUserComment(FALSE, FALSE);
  }

  /**
   * Test comment approval functionality through admin/content/comment.
   */
  function testApprovalAdminInterface() {
    $this->drupalLogin($this->admin_user);

    // Set anonymouse comments to require approval.
    $this->setAnonymousUserComment(TRUE, FALSE);
    $this->setCommentAnonymous('0'); // Ensure that doesn't require contact info.
    $this->drupalLogout();

    // Post anonymous comment without contact info.
    $subject = $this->randomName();
    $body = $this->randomName();
    $this->postComment($this->node, $subject, $body, TRUE, TRUE); // Set $contact to true so that it won't check for id and message.
    $this->assertText(t('Your comment has been queued for moderation by site administrators and will be published after approval.'), t('Comment requires approval.'));

    // Get unaproved comment id.
    $this->drupalLogin($this->admin_user);
    $anonymous_comment4 = $this->getUnaprovedComment($subject);
    $anonymous_comment4 = (object) array('id' => $anonymous_comment4, 'subject' => $subject, 'comment' => $body);
    $this->drupalLogout();

    $this->assertFalse($this->commentExists($anonymous_comment4), t('Anonymous comment was not published.'));

    // Approve comment.
    $this->drupalLogin($this->admin_user);
    $this->performCommentOperation($anonymous_comment4, 'publish', TRUE);
    $this->drupalLogout();

    $this->drupalGet('node/' . $this->node->nid);
    $this->assertTrue($this->commentExists($anonymous_comment4), t('Anonymous comment visible.'));
  }

  /**
   * Test comment approval functionality through node interface.
   */
  function testApprovalNodeInterface() {
    $this->drupalLogin($this->admin_user);

    // Set anonymouse comments to require approval.
    $this->setAnonymousUserComment(TRUE, FALSE);
    $this->setCommentAnonymous('0'); // Ensure that doesn't require contact info.
    $this->drupalLogout();

    // Post anonymous comment without contact info.
    $subject = $this->randomName();
    $body = $this->randomName();
    $this->postComment($this->node, $subject, $body, TRUE, TRUE); // Set $contact to true so that it won't check for id and message.
    $this->assertText(t('Your comment has been queued for moderation by site administrators and will be published after approval.'), t('Comment requires approval.'));

    // Get unaproved comment id.
    $this->drupalLogin($this->admin_user);
    $anonymous_comment4 = $this->getUnaprovedComment($subject);
    $anonymous_comment4 = (object) array('id' => $anonymous_comment4, 'subject' => $subject, 'comment' => $body);
    $this->drupalLogout();

    $this->assertFalse($this->commentExists($anonymous_comment4), t('Anonymous comment was not published.'));

    // Approve comment.
    $this->drupalLogin($this->admin_user);
    $this->drupalGet('node/'. $this->node->nid);
    $this->clickLink(t('approve'));
    $this->drupalLogout();

    $this->drupalGet('node/'. $this->node->nid);
    $this->assertTrue($this->commentExists($anonymous_comment4), t('Anonymous comment visible.'));
  }

  /**
   * Post comment.
   *
   * @param object $node Node to post comment on.
   * @param string $subject Comment subject.
   * @param string $comment Comment body.
   * @param boolean $preview Should preview be required.
   * @param mixed $contact Set to NULL for no contact info, TRUE to ignore success checking, and array of values to set contact info.
   */
  function postComment($node, $subject, $comment, $preview = TRUE, $contact = NULL) {
    $edit = array();
    $edit['subject'] = $subject;
    $edit['comment'] = $comment;

    if ($contact !== NULL && is_array($contact)) {
      $edit += $contact;
    }

    if ($node !== NULL) {
      $this->drupalGet('comment/reply/' . $node->nid);
    }

    if ($preview) {
      $this->assertNoFieldByName('op', t('Save'), t('Save button not found.')); // Preview required so no save button should be found.
      $this->drupalPost(NULL, $edit, t('Preview'));
    }
    $this->drupalPost(NULL, $edit, t('Save'));
    $match = array();
    // Get comment ID
    preg_match('/#comment-([^"]+)/', $this->getURL(), $match);

    // Get comment.
    if ($contact !== TRUE) { // If true then attempting to find error message.
      $this->assertText($subject, 'Comment posted.');
      $this->assertTrue((!empty($match) && !empty($match[1])), t('Comment id found.'));
    }

    if (isset($match[1])) {
      return (object) array('id' => $match[1], 'subject' => $subject, 'comment' => $comment);
    }
  }

  /**
   * Checks current pag for specified comment.
   *
   * @param object $comment Comment object.
   * @param boolean $reply The comment is a reply to another comment.
   * @return boolean Comment found.
   */
  function commentExists($comment, $reply = FALSE) {
    if ($comment && is_object($comment)) {
      $regex = '/' . ($reply ? '<div class="indented">(.*?)' : '');
      $regex .= '<a id="comment-' . $comment->id . '"(.*?)'; // Comment anchor.
      $regex .= '<div(.*?)'; // Begin in comment div.
      $regex .= $comment->subject . '(.*?)'; // Match subject.
      $regex .= $comment->comment . '(.*?)'; // Match comment.
      $regex .= '<\/div>/s'; // Dot matches newlines and ensure that match doesn't bleed outside comment div.

      return (boolean)preg_match($regex, $this->drupalGetContent());
    }
    else {
      return FALSE;
    }
  }

  /**
   * Delete comment.
   *
   * @param object $comment
   *   Comment to delete.
   */
  function deleteComment($comment) {
    $this->drupalPost('comment/delete/' . $comment->id, array(), t('Delete'));
    $this->assertText(t('The comment and all its replies have been deleted.'), t('Comment deleted.'));
  }

  /**
   * Set comment subject setting.
   *
   * @param boolean $enabled
   *   Subject value.
   */
  function setCommentSubject($enabled) {
    $this->setCommentSettings('comment_subject_field', ($enabled ? '1' : '0'), 'Comment subject ' . ($enabled ? 'enabled' : 'disabled') . '.');
  }

  /**
   * Set comment preview setting.
   *
   * @param boolean $required
   *   Preview value.
   */
  function setCommentPreview($required) {
    $this->setCommentSettings('comment_preview', ($required ? '1' : '0'), 'Comment preview ' . ($required ? 'required' : 'optional') . '.');
  }

  /**
   * Set comment form setting.
   *
   * @param boolean $enabled
   *   Form value.
   */
  function setCommentForm($enabled) {
    $this->setCommentSettings('comment_form_location', ($enabled ? '1' : '3'), 'Comment controls ' . ($enabled ? 'enabled' : 'disabled') . '.');
  }

  /**
   * Set comment anonymous level setting.
   *
   * @param integer $level
   *   Anonymous level.
   */
  function setCommentAnonymous($level) {
    $this->setCommentSettings('comment_anonymous', $level, 'Anonymous commenting set to level ' . $level . '.');
  }

  /**
   * Set the default number of comments per page.
   *
   * @param integer $comments
   *   Comments per page value.
   */
  function setCommentsPerPage($number) {
    $this->setCommentSettings('comment_default_per_page', $number, 'Number of comments per page set to ' . $number .'.');
  }

  /**
   * Set comment setting for article content type.
   *
   * @param string $name
   *   Name of variable.
   * @param string $value
   *   Value of variable.
   * @param string $message
   *   Status message to display.
   */
  function setCommentSettings($name, $value, $message) {
    variable_set($name . '_article', $value);
    $this->assertTrue(TRUE, t($message)); // Display status message.
  }

  /**
   * Set anonymous comment setting.
   *
   * @param boolean $enabled
   *   Allow anonymous commenting.
   * @param boolean $without_approval
   *   Allow anonymous commenting without approval.
   */
  function setAnonymousUserComment($enabled, $without_approval) {
    $edit = array();
    $edit['1[access comments]'] = $enabled;
    $edit['1[post comments]'] = $enabled;
    $edit['1[post comments without approval]'] = $without_approval;
    $this->drupalPost('admin/user/permissions', $edit, t('Save permissions'));
    $this->assertText(t('The changes have been saved.'), t('Anonymous user comments ' . ($enabled ? 'enabled' : 'disabled') . '.'));
  }

  /**
   * Check for contact info.
   *
   * @return boolean Contact info is available.
   */
  function commentContactInfoAvailable() {
    return preg_match('/(input).*?(name="name").*?(input).*?(name="mail").*?(input).*?(name="homepage")/s', $this->drupalGetContent());
  }

  /**
   * Perform the specified operation on the specified comment.
   *
   * @param object $comment
   *   Comment to perform operation on.
   * @param string $operation
   *   Operation to perform.
   * @param boolean $aproval
   *   Operation is found on approval page.
   */
  function performCommentOperation($comment, $operation, $approval = FALSE) {
    $edit = array();
    $edit['operation'] = $operation;
    $edit['comments[' . $comment->id . ']'] = TRUE;
    $this->drupalPost('admin/content/comment' . ($approval ? '/approval' : ''), $edit, t('Update'));

    if ($operation == 'delete') {
      $this->drupalPost(NULL, array(), t('Delete comments'));
      $this->assertText(t('The comments have been deleted.'), t('Operation "' . $operation . '" was performed on comment.'));
    }
    else {
      $this->assertText(t('The update has been performed.'), t('Operation "' . $operation . '" was performed on comment.'));
    }
  }

  /**
   * Get the comment ID for an unaproved comment.
   *
   * @param string $subject
   *   Comment subject to find.
   * @return integer
   *   Comment id.
   */
  function getUnaprovedComment($subject) {
    $this->drupalGet('admin/content/comment/approval');
    preg_match('/href="(.*?)#comment-([^"]+)"(.*?)>(' . $subject . ')/', $this->drupalGetContent(), $match);

    return $match[2];
  }
}