<?php
/**
 * Permalink Settings Administration Screen.
 *
 * @package SitePad
 * @subpackage Administration
 */

/** SitePad Administration Bootstrap */
require_once( dirname( __FILE__ ) . '/admin.php' );

if ( ! current_user_can( 'manage_options' ) ) {
	wp_die( __( 'Sorry, you are not allowed to manage options for this site.' ) );
}

$title       = __( 'Permalink Settings' );
$parent_file = 'options-general.php';

$home_path           = get_home_path();
$iis7_permalinks     = iis7_supports_permalinks();
$permalink_structure = get_option( 'permalink_structure' );

$prefix = $blog_prefix = '';
if ( ! got_url_rewrite() ) {
	$prefix = '/index.php';
}

$category_base   = get_option( 'category_base' );
$tag_base        = get_option( 'tag_base' );
$update_required = false;
$writable = false;

$using_index_permalinks = $wp_rewrite->using_index_permalinks();

if ( isset( $_POST['permalink_structure'] ) || isset( $_POST['category_base'] ) ) {
	check_admin_referer( 'update-permalink' );

	if ( isset( $_POST['permalink_structure'] ) ) {
		if ( isset( $_POST['selection'] ) && 'custom' != $_POST['selection'] ) {
			$permalink_structure = $_POST['selection'];
		} else {
			$permalink_structure = $_POST['permalink_structure'];
		}

		if ( ! empty( $permalink_structure ) ) {
			$permalink_structure = preg_replace( '#/+#', '/', '/' . str_replace( '#', '', $permalink_structure ) );
			if ( $prefix && $blog_prefix ) {
				$permalink_structure = $prefix . preg_replace( '#^/?index\.php#', '', $permalink_structure );
			} else {
				$permalink_structure = $blog_prefix . $permalink_structure;
			}
		}

		$permalink_structure = sanitize_option( 'permalink_structure', $permalink_structure );

		$wp_rewrite->set_permalink_structure( $permalink_structure );
	}

	if ( isset( $_POST['category_base'] ) ) {
		$category_base = $_POST['category_base'];
		if ( ! empty( $category_base ) ) {
			$category_base = $blog_prefix . preg_replace( '#/+#', '/', '/' . str_replace( '#', '', $category_base ) );
		}
		$wp_rewrite->set_category_base( $category_base );
	}

	if ( isset( $_POST['tag_base'] ) ) {
		$tag_base = $_POST['tag_base'];
		if ( ! empty( $tag_base ) ) {
			$tag_base = $blog_prefix . preg_replace( '#/+#', '/', '/' . str_replace( '#', '', $tag_base ) );
		}
		$wp_rewrite->set_tag_base( $tag_base );
	}

	$message = __( 'Permalink structure updated.' );
	
	// Flush rules and rebuild them
	flush_rewrite_rules();
	
	if ( ! get_settings_errors() ) {
		add_settings_error( 'general', 'settings_updated', $message, 'updated' );
	}

	set_transient( 'settings_errors', get_settings_errors(), 30 );

	wp_redirect( admin_url( 'options-permalink.php?settings-updated=true' ) );
	exit;
}

//flush_rewrite_rules();

require( ABSPATH . 'site-admin/admin-header.php' );
?>
<div class="wrap">
<h1><?php echo esc_html( $title ); ?></h1>

<form name="form" action="options-permalink.php" method="post">
<?php wp_nonce_field( 'update-permalink' ); 

$structures = array(
	0 => '',
	1 => $prefix . '/%year%/%monthnum%/%day%/%postname%/',
	2 => $prefix . '/%year%/%monthnum%/%postname%/',
	3 => $prefix . '/' . _x( 'archives', 'sample permalink base' ) . '/%post_id%',
	4 => $prefix . '/%postname%/',
);
?>
<table class="form-table permalink-structure">
	<tr>
		<th><label><input name="selection" type="radio" value="" <?php checked( '', $permalink_structure ); ?> /> <?php _e( 'Plain' ); ?></label></th>
		<td><code><?php echo get_option( 'home' ); ?>/?p=123</code></td>
	</tr>
	<tr>
		<th><label><input name="selection" type="radio" value="<?php echo esc_attr( $structures[1] ); ?>" <?php checked( $structures[1], $permalink_structure ); ?> /> <?php _e( 'Day and name' ); ?></label></th>
		<td><code><?php echo get_option( 'home' ) . $blog_prefix . $prefix . '/' . date( 'Y' ) . '/' . date( 'm' ) . '/' . date( 'd' ) . '/' . _x( 'sample-post', 'sample permalink structure' ) . '/'; ?></code></td>
	</tr>
	<tr>
		<th><label><input name="selection" type="radio" value="<?php echo esc_attr( $structures[2] ); ?>" <?php checked( $structures[2], $permalink_structure ); ?> /> <?php _e( 'Month and name' ); ?></label></th>
		<td><code><?php echo get_option( 'home' ) . $blog_prefix . $prefix . '/' . date( 'Y' ) . '/' . date( 'm' ) . '/' . _x( 'sample-post', 'sample permalink structure' ) . '/'; ?></code></td>
	</tr>
	<tr>
		<th><label><input name="selection" type="radio" value="<?php echo esc_attr( $structures[3] ); ?>" <?php checked( $structures[3], $permalink_structure ); ?> /> <?php _e( 'Numeric' ); ?></label></th>
		<td><code><?php echo get_option( 'home' ) . $blog_prefix . $prefix . '/' . _x( 'archives', 'sample permalink base' ) . '/123'; ?></code></td>
	</tr>
	<tr>
		<th><label><input name="selection" type="radio" value="<?php echo esc_attr( $structures[4] ); ?>" <?php checked( $structures[4], $permalink_structure ); ?> /> <?php _e( 'Post name' ); ?></label></th>
		<td><code><?php echo get_option( 'home' ) . $blog_prefix . $prefix . '/' . _x( 'sample-post', 'sample permalink structure' ) . '/'; ?></code></td>
	</tr>
	<tr>
		<th>
			<label><input name="selection" id="custom_selection" type="radio" value="custom" <?php checked( ! in_array( $permalink_structure, $structures ) ); ?> />
			<?php _e( 'Custom Structure' ); ?>
			</label>
		</th>
		<td>
			<code><?php echo get_option( 'home' ) . $blog_prefix; ?></code>
			<input name="permalink_structure" id="permalink_structure" type="text" value="<?php echo esc_attr( $permalink_structure ); ?>" class="regular-text code" />
			<div class="available-structure-tags hide-if-no-js">
				<div id="custom_selection_updated" aria-live="assertive" class="screen-reader-text"></div>
				<?php
				$available_tags = array(
					/* translators: %s: permalink structure tag */
					'year'     => __( '%s (The year of the post, four digits, for example 2004.)' ),
					/* translators: %s: permalink structure tag */
					'monthnum' => __( '%s (Month of the year, for example 05.)' ),
					/* translators: %s: permalink structure tag */
					'day'      => __( '%s (Day of the month, for example 28.)' ),
					/* translators: %s: permalink structure tag */
					'hour'     => __( '%s (Hour of the day, for example 15.)' ),
					/* translators: %s: permalink structure tag */
					'minute'   => __( '%s (Minute of the hour, for example 43.)' ),
					/* translators: %s: permalink structure tag */
					'second'   => __( '%s (Second of the minute, for example 33.)' ),
					/* translators: %s: permalink structure tag */
					'post_id'  => __( '%s (The unique ID of the post, for example 423.)' ),
					/* translators: %s: permalink structure tag */
					'postname' => __( '%s (The sanitized post title (slug).)' ),
					/* translators: %s: permalink structure tag */
					'category' => __( '%s (Category slug. Nested sub-categories appear as nested directories in the URL.)' ),
					/* translators: %s: permalink structure tag */
					'author'   => __( '%s (A sanitized version of the author name.)' ),
				);

				/**
				 * Filters the list of available permalink structure tags on the Permalinks settings page.
				 *
				 * @since 4.8.0
				 *
				 * @param string[] $available_tags An array of key => value pairs of available permalink structure tags.
				 */
				$available_tags = apply_filters( 'available_permalink_structure_tags', $available_tags );

				/* translators: %s: permalink structure tag */
				$structure_tag_added = __( '%s added to permalink structure' );

				/* translators: %s: permalink structure tag */
				$structure_tag_already_used = __( '%s (already used in permalink structure)' );

				if ( ! empty( $available_tags ) ) :
					?>
					<p><?php _e( 'Available tags:' ); ?></p>
					<ul role="list">
						<?php
						foreach ( $available_tags as $tag => $explanation ) {
							?>
							<li>
								<button type="button"
										class="button button-secondary"
										aria-label="<?php echo esc_attr( sprintf( $explanation, $tag ) ); ?>"
										data-added="<?php echo esc_attr( sprintf( $structure_tag_added, $tag ) ); ?>"
										data-used="<?php echo esc_attr( sprintf( $structure_tag_already_used, $tag ) ); ?>">
									<?php echo '%' . $tag . '%'; ?>
								</button>
							</li>
							<?php
						}
						?>
					</ul>
				<?php endif; ?>
			</div>
		</td>
	</tr>
</table>

<h2 class="title"><?php _e( 'Optional' ); ?></h2>
<p>
<?php
/* translators: %s: placeholder that must come at the start of the URL */
printf( __( 'If you like, you may enter custom structures for your category and tag URLs here. For example, using <code>topics</code> as your category base would make your category links like <code>%s/topics/uncategorized/</code>. If you leave these blank the defaults will be used.' ), get_option( 'home' ) . $blog_prefix . $prefix );
?>
</p>

<table class="form-table">
	<tr>
		<th><label for="category_base"><?php /* translators: prefix for category permalinks */ _e( 'Category base' ); ?></label></th>
		<td><?php echo $blog_prefix; ?> <input name="category_base" id="category_base" type="text" value="<?php echo esc_attr( $category_base ); ?>" class="regular-text code" /></td>
	</tr>
	<tr>
		<th><label for="tag_base"><?php _e( 'Tag base' ); ?></label></th>
		<td><?php echo $blog_prefix; ?> <input name="tag_base" id="tag_base" type="text" value="<?php echo esc_attr( $tag_base ); ?>" class="regular-text code" /></td>
	</tr>
	<?php do_settings_fields( 'permalink', 'optional' ); ?>
</table>

<?php do_settings_sections( 'permalink' ); ?>

<?php submit_button(); ?>
</form>
</div>

<?php require( ABSPATH . 'site-admin/admin-footer.php' ); ?>