<?php

/*
*  ACF Taxonomy Form Class
*
*  All the logic for adding fields to taxonomy terms
*
*  @class       acf_form_taxonomy
*  @package     ACF
*  @subpackage  Forms
*/

if ( ! class_exists( 'acf_form_taxonomy' ) ) :

	class acf_form_taxonomy {

		var $view = 'add';


		/*
		*  __construct
		*
		*  This function will setup the class functionality
		*
		*  @type    function
		*  @date    5/03/2014
		*  @since   5.0.0
		*
		*  @param   n/a
		*  @return  n/a
		*/

		function __construct() {

			// actions
			add_action( 'admin_enqueue_scripts', array( $this, 'admin_enqueue_scripts' ) );

			// save
			add_action( 'create_term', array( $this, 'save_term' ), 10, 3 );
			add_action( 'edit_term', array( $this, 'save_term' ), 10, 3 );

			// delete
			add_action( 'delete_term', array( $this, 'delete_term' ), 10, 4 );

		}


		/*
		*  validate_page
		*
		*  This function will check if the current page is for a post/page edit form
		*
		*  @type    function
		*  @date    23/06/12
		*  @since   3.1.8
		*
		*  @param   n/a
		*  @return  (boolean)
		*/

		function validate_page() {

			// global
			global $pagenow;

			// validate page
			if ( $pagenow === 'edit-tags.php' || $pagenow === 'term.php' ) {

				return true;

			}

			// return
			return false;
		}


		/*
		*  admin_enqueue_scripts
		*
		*  This action is run after post query but before any admin script / head actions.
		*  It is a good place to register all actions.
		*
		*  @type    action (admin_enqueue_scripts)
		*  @date    26/01/13
		*  @since   3.6.0
		*
		*  @param   N/A
		*  @return  N/A
		*/

		function admin_enqueue_scripts() {

			// validate page
			if ( ! $this->validate_page() ) {

				return;

			}

			// vars
			$screen   = get_current_screen();
			$taxonomy = $screen->taxonomy;

			// load acf scripts
			acf_enqueue_scripts();

			// actions
			add_action( 'admin_footer', array( $this, 'admin_footer' ), 10, 1 );
			add_action( "{$taxonomy}_add_form_fields", array( $this, 'add_term' ), 10, 1 );
			add_action( "{$taxonomy}_edit_form", array( $this, 'edit_term' ), 10, 2 );

		}


		/*
		*  add_term
		*
		*  description
		*
		*  @type    function
		*  @date    8/10/13
		*  @since   5.0.0
		*
		*  @param   $post_id (int)
		*  @return  $post_id (int)
		*/

		function add_term( $taxonomy ) {

			// vars
			$post_id = 'term_0';

			// update vars
			$this->view = 'add';

			// get field groups
			$field_groups = acf_get_field_groups(
				array(
					'taxonomy' => $taxonomy,
				)
			);

			// render
			if ( ! empty( $field_groups ) ) {

				// data
				acf_form_data(
					array(
						'screen'  => 'taxonomy',
						'post_id' => $post_id,
					)
				);

				// wrap
				echo '<div id="acf-term-fields" class="acf-fields -clear">';

				// loop
				foreach ( $field_groups as $field_group ) {
						$fields = acf_get_fields( $field_group );
						acf_render_fields( $fields, $post_id, 'div', 'field' );
				}

				// wrap
				echo '</div>';

			}

		}


		/*
		*  edit_term
		*
		*  description
		*
		*  @type    function
		*  @date    8/10/13
		*  @since   5.0.0
		*
		*  @param   $post_id (int)
		*  @return  $post_id (int)
		*/

		function edit_term( $term, $taxonomy ) {

			// vars
			$post_id = 'term_' . $term->term_id;

			// update vars
			$this->view = 'edit';

			// get field groups
			$field_groups = acf_get_field_groups(
				array(
					'taxonomy' => $taxonomy,
				)
			);

			// render
			if ( ! empty( $field_groups ) ) {

				acf_form_data(
					array(
						'screen'  => 'taxonomy',
						'post_id' => $post_id,
					)
				);

				foreach ( $field_groups as $field_group ) {

						// title
					if ( $field_group['style'] == 'default' ) {
						echo '<h2>' . $field_group['title'] . '</h2>';
					}

						// fields
						echo '<table class="form-table">';
					$fields = acf_get_fields( $field_group );
					acf_render_fields( $fields, $post_id, 'tr', 'field' );
						echo '</table>';

				}
			}

		}


		/*
		*  admin_footer
		*
		*  description
		*
		*  @type    function
		*  @date    27/03/2015
		*  @since   5.1.5
		*
		*  @param   $post_id (int)
		*  @return  $post_id (int)
		*/

		function admin_footer() {

			?>
<script type="text/javascript">
(function($) {
	
	// Define vars.
	var view = '<?php echo $this->view; ?>';
	var $form = $('#' + view + 'tag');
	var $submit = $('#' + view + 'tag input[type="submit"]:last');
	
	// Add missing spinner.
	if( !$submit.next('.spinner').length ) {
		$submit.after('<span class="spinner"></span>');
	}
	
			<?php

			// View: Add.
			if ( $this->view == 'add' ) :
				?>
	
	// vars
	var $fields = $('#acf-term-fields');
	var html = '';
	
	// Store a copy of the $fields html used later to replace after AJAX request.
	// Hook into 'prepare' action to allow ACF core helpers to first modify DOM.
	// Fixes issue where hidden #acf-hidden-wp-editor is initialized again.
	acf.addAction('prepare', function(){
		html = $fields.html();
	}, 6);
		
	// WP triggers click as primary action
	$submit.on('click', function( e ){
		
		// validate
		var valid = acf.validateForm({
			form: $form,
			event: e,
			reset: true
		});
		
		// if not valid, stop event and allow validation to continue
		if( !valid ) {
			e.preventDefault();
			e.stopImmediatePropagation();
		}
	});
	
	// listen to AJAX add-tag complete
	$(document).ajaxComplete(function(event, xhr, settings) {
		
		// bail early if is other ajax call
		if( settings.data.indexOf('action=add-tag') == -1 ) {
			return;
		}
		
		// bail early if response contains error
		if( xhr.responseText.indexOf('wp_error') !== -1 ) {
			return;
		}
		
		// action for 3rd party customization
		acf.doAction('remove', $fields);
		
		// reset HTML
		$fields.html( html );
		
		// action for 3rd party customization
		acf.doAction('append', $fields);
		
		// reset unload
		acf.unload.reset();
	});
	
		<?php endif; ?>
	
})(jQuery);	
</script>
			<?php

		}


		/*
		*  save_term
		*
		*  description
		*
		*  @type    function
		*  @date    8/10/13
		*  @since   5.0.0
		*
		*  @param   $post_id (int)
		*  @return  $post_id (int)
		*/

		function save_term( $term_id, $tt_id, $taxonomy ) {

			// vars
			$post_id = 'term_' . $term_id;

			// verify and remove nonce
			if ( ! acf_verify_nonce( 'taxonomy' ) ) {
				return $term_id;
			}

			// valied and show errors
			acf_validate_save_post( true );

			// save
			acf_save_post( $post_id );

		}


		/*
		*  delete_term
		*
		*  description
		*
		*  @type    function
		*  @date    15/10/13
		*  @since   5.0.0
		*
		*  @param   $post_id (int)
		*  @return  $post_id (int)
		*/

		function delete_term( $term, $tt_id, $taxonomy, $deleted_term ) {

			// bail early if termmeta table exists
			if ( acf_isset_termmeta() ) {
				return $term;
			}

			// globals
			global $wpdb;

			// vars
			$search  = $taxonomy . '_' . $term . '_%';
			$_search = '_' . $search;

			// escape '_'
			// http://stackoverflow.com/questions/2300285/how-do-i-escape-in-sql-server
			$search  = str_replace( '_', '\_', $search );
			$_search = str_replace( '_', '\_', $_search );

			// delete
			$result = $wpdb->query(
				$wpdb->prepare(
					"DELETE FROM $wpdb->options WHERE option_name LIKE %s OR option_name LIKE %s",
					$search,
					$_search
				)
			);

		}

	}

	new acf_form_taxonomy();

endif;


?>