<?php
require_once dirname(__FILE__) . '/admin-ui.php';

class FeedWordPressAuthorsPage extends FeedWordPressAdminPage {
	var $authorlist = NULL;
	var $rule_count = 0;

	/**
	 * Class constructor
	 *
	 * @param  int  $link  ID of the feed in the Links.
	 */
	public function __construct( $link = -1 ) {
		if ( is_numeric( $link ) and -1 == $link ) :
			$link = $this->submitted_link();
		endif;

		parent::__construct( 'feedwordpressauthors', $link );
		$this->refresh_author_list();
		$this->dispatch = 'feedwordpress_author_settings';
		$this->filename = __FILE__;

		$this->pagenames = array(
			'default'         => 'Authors',
			'settings-update' => 'Syndicated Authors',
			'open-sheet'      => 'Syndicated Author',
		);
	} /* construct() */

	/**
	 * Refreshes the author list and optionally sort it with the natural
	 * alphanumeric sort algorithm.
	 */
	function refresh_author_list() {
		$this->authorlist = fwp_author_list();

		// Case-insensitive "natural" alphanumeric sort. Preserves key/value associations.
		if ( function_exists( 'natcasesort' ) ) :
			natcasesort( $this->authorlist );
		endif;
	} /* FeedWordPressAuthorsPage::refresh_author_list) */

	/**
	 * Displays the page box for the syndicated authors.
	 *
	 * @param  FeedWordPressAuthorsPage  $page  FWP dashboard page.
	 * @param  string|null               $box   Page box (unused).
	 */
	/*static*/ function syndicated_authors_box( $page, $box = NULL ) {
		/** @var SyndicatedLink|null  An object of class {@link SyndicatedLink} if created for one feed's settings, NULL if created for global default settings. */
		$link = $page->link;	// unused? (gwyneth 20230920)
		$unfamiliar = array( 'create' => '','default' => '','filter' => '' );

		if ( $page->for_feed_settings() ) :
			$key = $this->link->setting( 'unfamiliar author', NULL, 'site-default' );
			$unfamiliar['site-default'] = '';
		else :
			$key = FeedWordPress::on_unfamiliar('author');
		endif;
		$unfamiliar[$key] = true;

		$match_author_by_email = ! ( 'yes' == get_option( "feedwordpress_do_not_match_author_by_email" ) );
		$null_emails = FeedWordPress::null_email_set();

		// Hey ho, let's go...
		?>
<table class="form-table">
<?php
if ( $page->for_default_settings() ) :
?>
<tr><th>Unmatched authors</th>
<td><span>Authors who haven&rsquo;t been syndicated before</span>
  <select style="max-width: 27.0em" id="unfamiliar-author" name="unfamiliar_author" onchange="contextual_appearance('unfamiliar-author', 'unfamiliar-author-newuser', 'unfamiliar-author-default', 'newuser', 'inline');">
    <option value="create"<?php fwp_selected_flag($unfamiliar, 'create'); ?>>will have a new author account created for them</option>
    <?php foreach ($page->authorlist as $author_id => $author_name) :
		if ( !isset($unfamiliar[$author_id])) : $unfamiliar[$author_id] = false; endif;
	?>
      <option value="<?php echo esc_attr($author_id); ?>"<?php fwp_selected_flag($unfamiliar, $author_id); ?>>will have their posts attributed to <?php echo esc_html($author_name); ?></option>
    <?php endforeach; ?>
    <option value="newuser">will have their posts attributed to a new user...</option>
    <option value="filter"<?php fwp_selected_flag($unfamiliar, 'filter'); ?>>get filtered out</option>
  </select>

  <span id="unfamiliar-author-newuser">named <input type="text" name="unfamiliar_author_newuser" value="" /></span></p>
  </td>
</tr>

<?php
endif;

if ($page->for_feed_settings()) :
	$map = $this->link->setting('map authors', NULL, array());
?>
<tr><th>Matching authors</th>
<td><p>How should FeedWordPress attribute posts from this feed to WordPress
authors?</p>
<ul class="settings">
<li><p><input type="radio" name="author_rules_name[all]" value="*"
<?php if (isset($map['name']['*'])) : $author_action = $map['name']['*']; ?>
	checked="checked"
<?php
	else :
		$author_action = NULL;
	endif; ?>
	/> All posts syndicated
from this feed <select class="author-rules" id="author-rules-all"
name="author_rules_action[all]" onchange="contextual_appearance('author-rules-all', 'author-rules-all-newuser', 'author-rules-all-default', 'newuser', 'inline');">
    <?php foreach ($page->authorlist as $local_author_id => $local_author_name) : ?>
    <option value="<?php echo esc_attr($local_author_id); ?>"<?php fwp_selected_flag($local_author_id==$author_action); ?>>are assigned to <?php echo esc_html($local_author_name); ?></option>
    <?php endforeach; ?>
    <option value="newuser">will be assigned to a new user...</option>
    <option value="filter"<?php fwp_selected_flag('filter'==$author_action); ?>>get filtered out</option>
  </select>
  <span class="author-rules-newuser" id="author-rules-all-newuser">named
  <input type="text" name="author_rules_newuser[all]" value="" /></span></p></li>
<li><p><input type="radio" name="author_rules_name[all]" value=""
<?php if ( !isset($map['name']['*'])) : ?>
	checked="checked"
<?php endif; ?>
/> Attribute posts to authors based on automatic mapping rules. (Blank out a
name to delete the rule. Fill in a new name at the bottom to create a new rule.)</p>

<table style="width: 100%">
<?php
	if (isset($this->link->settings['map authors'])) :
?>
<?php
		$page->rule_count=0;
		foreach ($this->link->settings['map authors'] as $author_rules) :
			foreach ($author_rules as $author_name => $author_action) :
				if ($author_name != '*') :
					$page->rule_count++;
					$authorRulesId = sanitize_html_class(sprintf("author-rules-%d", $page->rule_count));
?>
<tr>
<th style="text-align: left; width: 15.0em">Posts by <input type="text" name="author_rules_name[]" value="<?php echo esc_attr($author_name); ?>" size="11" /></th>
  <td>
  <select class="author-rules" id="<?php echo esc_attr($authorRulesId); ?>" name="author_rules_action[]" onchange="contextual_appearance('<?php echo esc_attr($authorRulesId); ?>', '<?php echo esc_attr($authorRulesId); ?>-newuser', '<?php echo esc_attr($authorRulesId); ?>-default', 'newuser', 'inline');">
    <?php foreach ($page->authorlist as $local_author_id => $local_author_name) : ?>
    <option value="<?php echo esc_attr($local_author_id); ?>"<?php fwp_selected_flag($local_author_id==$author_action); ?>>are assigned to <?php echo esc_attr($local_author_name); ?></option>
    <?php endforeach; ?>
    <option value="newuser">will be assigned to a new user...</option>
    <option value="filter"<?php fwp_selected_flag('filter'==$author_action); ?>>get filtered out</option>
  </select>

  <span class="author-rules-newuser" id="<?php echo esc_attr($authorRulesId); ?>-newuser">named <input type="text" name="author_rules_newuser[]" value="" /></span>
  </td>
</tr>
<?php
				endif;
			endforeach;
		endforeach;
	endif;
?>

<tr>
<th style="text-align: left; width: 15.0em">Posts by <input type="text" name="add_author_rule_name" size="11" /></th>
  <td>
    <select id="add-author-rule" name="add_author_rule_action" onchange="contextual_appearance('add-author-rule', 'add-author-rule-newuser', 'add-author-rule-default', 'newuser', 'inline');">
      <?php foreach ($page->authorlist as $author_id => $author_name) : ?>
      <option value="<?php echo esc_attr($author_id); ?>">are assigned to <?php echo esc_html($author_name); ?></option>
      <?php endforeach; ?>
      <option value="newuser">will be assigned to a new user...</option>
      <option value="filter">get filtered out</option>
    </select>

   <span id="add-author-rule-newuser">named <input type="text" name="add_author_rule_newuser" value="" /></span>
   </td>
</tr>

<tr>
<th style="text-align: left; width: 15.0em">Unmatched authors</th>
<td>
<span>Authors who haven't been syndicated before</span>
  <select style="max-width: 27.0em" id="unfamiliar-author" name="unfamiliar_author" onchange="contextual_appearance('unfamiliar-author', 'unfamiliar-author-newuser', 'unfamiliar-author-default', 'newuser', 'inline');">
<?php if ($page->for_feed_settings()) : ?>
    <option value="site-default"<?php fwp_selected_flag($unfamiliar, 'site-default'); ?>>are handled according to the default for all feeds</option>
<?php endif; ?>
    <option value="create"<?php fwp_selected_flag($unfamiliar, 'create'); ?>>will have a new author account created for them</option>
    <?php foreach ( $page->authorlist as $author_id => $author_name ) : ?>
      <option value="<?php echo esc_attr($author_id); ?>"<?php fwp_selected_flag($unfamiliar, $author_id); ?>>will have their posts attributed to <?php echo esc_html($author_name); ?></option>
    <?php endforeach; ?>
    <option value="newuser">will have their posts attributed to a user named ...</option>
    <option value="filter"<?php fwp_selected_flag($unfamiliar, 'filter'); ?>>get filtered out</option>
  </select>

  <span id="unfamiliar-author-newuser"><input type="text" name="unfamiliar_author_newuser" value="" /></span></p>
</td>
</tr>
</table></li>
</ul>

</td>
</tr>
<?php endif; ?>

<?php if ( $page->for_default_settings() ) : ?>
<tr>
<th scope="row">Matching Authors</th>
<td><ul style="list-style: none; margin: 0; padding: 0;">
<li><div><label><input id="match-author-by-email" type="checkbox" name="match_author_by_email" value="yes" <?php fwp_selected_flag($match_author_by_email, null, "checked"); ?> onchange="contextual_appearance('match-author-by-email', 'unless-null-email', null, 'yes', 'block', /*checkbox=*/ true);" /> Treat syndicated authors with the same e-mail address as the same author.</label></div>
<div id="unless-null-email">
<p>Unless the e-mail address is one of the following anonymous e-mail addresses:</p>
<textarea name="null_emails" rows="3" style="width: 100%">
<?php print esc_html(implode("\n", $null_emails)); ?>
</textarea>
</div></li>
</ul></td>
</tr>
<?php endif; ?>
</tbody>
</table>
		<?php
	} /* FeedWordPressAuthorsPage::syndicated_authors_box() */

	/**
	 * Displays a box for fixing mismatched authors.
	 *
	 * @param  FeedWordPressAuthorsPage  $page  FWP dashboard page.
	 * @param  string|null               $box   Page box (unused).
	 */
	/*static*/ function fix_authors_box( $page, $box = NULL )
	{
		?>
		<table class="form-table">
		<tbody>
		<tr>
		<th scope="row">Fixing mis-matched authors:</th>
		<td><p style="margin: 0.5em 0px">Take all the posts from this feed attributed to
		<select name="fix_mismatch_from">
		<?php foreach ( $page->authorlist as $author_id => $author_name ) : ?>
		      <option value="<?php echo esc_attr( $author_id ); ?>"><?php echo esc_html( $author_name ); ?></option>
		<?php endforeach; ?>
		</select>
		and instead
		<select id="fix-mismatch-to" name="fix_mismatch_to" onchange="contextual_appearance('fix-mismatch-to', 'fix-mismatch-to-newuser', null, 'newuser', 'inline');">
		<?php foreach ($page->authorlist as $author_id => $author_name) : ?>
		      <option value="<?php echo esc_attr($author_id); ?>">re-assign them to <?php echo esc_html($author_name); ?></option>
		<?php endforeach; ?>
		      <option value="newuser">re-assign them to a new user...</option>
		      <option value="filter">delete them</option>
		</select>

		   <span id="fix-mismatch-to-newuser">named <input type="text" name="fix_mismatch_to_newuser" value="" /></span>
		   <input type="submit" class="button" name="fix_mismatch" value="Fix it!" />
		</td>
		</tr>
		</tbody>
		</table>
		<?php
	} /* FeedWordPressAuthorsPage::fix_authors_box() */

	function display() {
		$this->boxes_by_methods = array(
		'syndicated_authors_box' => __('Syndicated Authors'),
		'fix_authors_box' => __('Reassign Authors'),
		);
		if ($this->for_default_settings()) :
			unset($this->boxes_by_methods['fix_authors_box']);
		endif;

		parent::display();
		?>
<script type="text/javascript">
	contextual_appearance('unfamiliar-author', 'unfamiliar-author-newuser', 'unfamiliar-author-default', 'newuser', 'inline');
</script>

<?php 		if ($this->for_feed_settings()) : ?>
<script type="text/javascript">
	jQuery('.author-rules').each ( function () {
		contextual_appearance(this.id, this.id+'-newuser', this.id+'-default', 'newuser', 'inline');
	} );

	contextual_appearance('add-author-rule', 'add-author-rule-newuser', 'add-author-rule-default', 'newuser', 'inline');
	contextual_appearance('fix-mismatch-to', 'fix-mismatch-to-newuser', null, 'newuser', 'inline');
</script>
<?php 		else : ?>
<script type="text/javascript">
	contextual_appearance('match-author-by-email', 'unless-null-email', null, 'yes', 'block', /*checkbox=*/ true);
</script>
<?php 		endif;
	} /* FeedWordPressAuthorsPage::display () */

	/**
	 * Checks if a mismatch fix was requested.
	 *
	 * @return  bool  True if a fix was requested and not empty.
	 */
	public function fix_mismatch_requested() {
		/** @var string|null */
		$fix = FeedWordPress::post( 'fix_mismatch' );
		return ( ! is_null( $fix ) && strlen( $fix ) > 0 );	// possibly the same as `( ! empty( $fix ) )`.
	} /* FeedWordPressAuthorsPage::fix_mismatch_requested() */

	/**
	 * If a mismatch fix was requested, handles it here;
	 * else sends it to the parent class for processing.
	 */
	public function accept_POST() {
		if ( self::fix_mismatch_requested() ) :
			$this->fix_mismatch();
		else :
			parent::accept_POST();
		endif;
	} /* FeedWordPressAuthorsPage::accept_POST() */

	/**
	 * Fixes an author mismatch.
	 */
	function fix_mismatch() {
		global $wpdb;

		$to = FeedWordPress::post( 'fix_mismatch_to' );
//		if ( 'newuser' === $fix_to ) :	// will _always_ be false, since $fix_to is not called from anywhere (gwyneth 20230915)
		if ( 'newuser' === $to ) :	// probably this is what was intended! (gwyneth 20230920)
			$newuser_name = trim( FeedWordPress::post( 'fix_mismatch_to_newuser', '' ) );
			$to = fwp_insert_new_user( $newuser_name );
		endif;

		$from = (int) FeedWordPress::post( 'fix_mismatch_from' );
		if ( is_numeric( $from ) ) :

			// Make a list of all the items by this author
			// syndicated from this feed...
			$post_ids = $wpdb->get_col("
			SELECT {$wpdb->posts}.id
			FROM {$wpdb->posts}, {$wpdb->postmeta}
			WHERE ({$wpdb->posts}.id = {$wpdb->postmeta}.post_id)
			AND {$wpdb->postmeta}.meta_key = 'syndication_feed_id'
			AND {$wpdb->postmeta}.meta_value = '{$this->link->id}'
			AND {$wpdb->posts}.post_author = '{$from}'
			");

			if ( count( $post_ids ) > 0 ) :
				$N = count( $post_ids );

				// $posts = 'post'.(($N==1) ? '' : 's');	// Wordpress has _n() for plurals... (gwyneth 20230920)
				$posts = sprintf( _n( '%s post', '%s posts', $N, 'text-domain' ), number_format_i18n( $N ) );

				// Re-assign them all to the correct author
				if ( is_numeric( $to ) ) : // re-assign to a particular user
					$post_set = "(" . implode( ",", $post_ids ) . ")";

					// Getting the revisions too, if there are any
					$parent_in_clause = "OR {$wpdb->posts}.post_parent IN $post_set";

					$wpdb->query("
						UPDATE {$wpdb->posts}
						SET post_author='{$to}'
						WHERE ({$wpdb->posts}.id IN $post_set
						$parent_in_clause)
					");
					// $this->mesg = sprintf(__("Re-assigned %d {$posts}."), $N);	// see comment abpve
					$this->mesg = __( "Re-assigned " ) . $posts;

				// ... and kill them all
				elseif ( 'filter' == $to ) :
					foreach ( $post_ids as $post_id ) :
						wp_delete_post( $post_id );
					endforeach;

					$this->mesg = __( "Deleted " ) . $posts;
				endif;
			else :
				$this->mesg = __("Couldn't find any posts that matched your criteria.");
			endif;
		endif;
		$this->updated = false;
	} /* FeedWordPressAuthorsPage::fix_mismatch() */

	/**
	 * Presumably saves settings...
	 *
	 * @return void  description
	 */
	function save_settings () {
		if ($this->for_feed_settings()) :
			// $alter = array();	// what is this array? It's never used. (gwyneth 20230920)

			// Unfamiliar author rule
			$unfamiliar_author = FeedWordPress::post( 'unfamiliar_author' );
			if ( ! is_null( $unfamiliar_author ) ) :
				if ( 'newuser' == $unfamiliar_author ) :
					$new_name = trim( FeedWordPress::post( "unfamiliar_author_newuser" ) );
					$this->link->map_name_to_new_user(/*name=*/ null, $new_name);
				else :
					$this->link->update_setting(
						"unfamiliar author",
						$unfamiliar_author,
						'site-default'
					);
				endif;
			endif;

			// Handle author mapping rules
			$author_rules_name = FeedWordPress::post( 'author_rules_name' );
			$author_rules_action = FeedWordPress::post('author_rules_action' );
			if ( ! ( is_null( $author_rules_name ) || is_null( $author_rules_action ) ) ) :
				if ( isset( $author_rules_name['all'] ) ) :
					if ( strlen( $author_rules_name['all']) > 0 ) :
						$author_rules_name = array(
							'all' => $author_rules_name['all'],
						);

						// Erase all the rest.
					endif;
				endif;

				unset($this->link->settings['map authors']);
				foreach ($author_rules_name as $key => $name) :
					// Normalize for case and whitespace
					$name = strtolower( trim( $name ) );
					$author_action = strtolower( trim( $author_rules_action[$key] ) );

					$author_rules_newuser = FeedWordPress::post('author_rules_newuser' );
					if ( strlen($name) > 0 ) :
						if ( 'newuser' == $author_action ) :
							$new_name = trim( $author_rules_newuser[ $key ] );
							$this->link->map_name_to_new_user($name, $new_name);
						else :
							$this->link->settings['map authors']['name'][$name] = $author_action;
						endif;
					endif;
				endforeach;
			endif;

			$name = FeedWordPress::post( 'add_author_rule_name');
			$author_action = FeedWordPress::post( 'add_author_rule_action' );
			if ( ! ( is_null( $name ) || is_null( $author_action ) ) ) :
				$name = strtolower( trim( $name ) );
				$author_action = strtolower( trim( $author_action ) );

				if (strlen($name) > 0) :
					if ('newuser' == $author_action) :
						$new_name = trim( FeedWordPress::post( 'add_author_rule_newuser' ));
						$this->link->map_name_to_new_user($name, $new_name);
					else :
						$this->link->settings['map authors']['name'][$name] = $author_action;
					endif;
				endif;
			endif;

		else :

			$unfamiliar_author = FeedWordPress::post( 'unfamiliar_author' );
			if ( 'newuser' === $unfamiliar_author ) :
				$new_name = FeedWordPress::post( 'unfamiliar_author_newuser' );
				$new_id = fwp_insert_new_user( trim( $new_name ) );
				if ( is_numeric( $new_id ) ) :
					update_option( 'feedwordpress_unfamiliar_author', $new_id );
				else :
					// TODO: Add some error detection and reporting
					// Put WP_Error stuff into $this->mesg ?
				endif;
			else :
				update_option( 'feedwordpress_unfamiliar_author', $unfamiliar_author );
			endif;

			$by_email = FeedWordPress::post( 'match_author_by_email' );
			update_option(
				'feedwordpress_do_not_match_author_by_email',
				( isset( $by_email ) && 'yes' == $by_email ) ? 'no' : 'yes'
			);

			$null_emails = FeedWordPress::post( 'null_emails', null, 'textarea' );
			if ( ! is_null( $null_emails ) ) :
				update_option( 'feedwordpress_null_email_set', $null_emails );
			endif;
		endif;

		parent::save_settings();
		$this->refresh_author_list();
	} /* FeedWordPressAuthorsPage::save_settings() */

} /* class FeedWordPressAuthorsPage */

$authorsPage = new FeedWordPressAuthorsPage;
$authorsPage->display();
