<?php

class acf_field_repeater extends acf_field
{

	var $settings;
	
	
	/*
	*  __construct
	*
	*  Set name / label needed for actions / filters
	*
	*  @since	3.6
	*  @date	23/01/13
	*/
	
	function __construct()
	{
		// vars
		$this->name = 'repeater';
		$this->label = __("Repeater",'acf');
		$this->category = __("Layout",'acf');
		$this->defaults = array(
			'sub_fields'	=>	array(),
			'row_min'		=>	0,
			'row_limit'		=>	0,
			'layout' 		=> 'table',
			'button_label'	=>	__("Add Row",'acf'),
		);
		$this->l10n = array(
			'min'	=>	__("Minimum rows reached ( {min} rows )",'acf'),
			'max'	=>	__("Maximum rows reached ( {max} rows )",'acf'),
		);
		
		
		// do not delete!
    	parent::__construct();
    	

    	// settings
		$this->settings = array(
			'path' => apply_filters('acf/helpers/get_path', __FILE__),
			'dir' => apply_filters('acf/helpers/get_dir', __FILE__),
			'version' => '1.1.1'
		);
		
		
	}
	
	
	/*
	*  input_admin_enqueue_scripts()
	*
	*  This action is called in the admin_enqueue_scripts action on the edit screen where your field is created.
	*  Use this action to add css + javascript to assist your create_field() action.
	*
	*  $info	http://codex.wordpress.org/Plugin_API/Action_Reference/admin_enqueue_scripts
	*  @type	action
	*  @since	3.6
	*  @date	23/01/13
	*/

	function input_admin_enqueue_scripts()
	{
		// register acf scripts
		wp_register_script( 'acf-input-repeater', $this->settings['dir'] . 'js/input.js', array('acf-input'), $this->settings['version'] );
		wp_register_style( 'acf-input-repeater', $this->settings['dir'] . 'css/input.css', array('acf-input'), $this->settings['version'] ); 
		
		
		// scripts
		wp_enqueue_script(array(
			'acf-input-repeater',	
		));

		// styles
		wp_enqueue_style(array(
			'acf-input-repeater',	
		));
		
	}
	
	
	/*
	*  field_group_admin_enqueue_scripts()
	*
	*  This action is called in the admin_enqueue_scripts action on the edit screen where your field is edited.
	*  Use this action to add css + javascript to assist your create_field_options() action.
	*
	*  $info	http://codex.wordpress.org/Plugin_API/Action_Reference/admin_enqueue_scripts
	*  @type	action
	*  @since	3.6
	*  @date	23/01/13
	*/

	function field_group_admin_enqueue_scripts()
	{
		wp_register_script( 'acf-field-group-repeater', $this->settings['dir'] . 'js/field-group.js', array('acf-field-group'), $this->settings['version']);
		
		// scripts
		wp_enqueue_script(array(
			'acf-field-group-repeater',	
		));
	}
	
	
	/*
	*  load_field()
	*
	*  This filter is appied to the $field after it is loaded from the database
	*
	*  @type	filter
	*  @since	3.6
	*  @date	23/01/13
	*
	*  @param	$field - the field array holding all the field options
	*
	*  @return	$field - the field array holding all the field options
	*/
	
	function load_field( $field )
	{
		// apply_load field to all sub fields
		if( isset($field['sub_fields']) && is_array($field['sub_fields']) )
		{
			foreach( $field['sub_fields'] as $k => $sub_field )
			{
				// apply filters
				$sub_field = apply_filters('acf/load_field_defaults', $sub_field);
				
				
				// apply filters
				foreach( array('type', 'name', 'key') as $key )
				{
					// run filters
					$sub_field = apply_filters('acf/load_field/' . $key . '=' . $sub_field[ $key ], $sub_field); // new filter
				}

				
				// update sub field
				$field['sub_fields'][ $k ] = $sub_field;
			}
		}
		
		
		// return
		return $field;
	}
	
	
	/*
	*  create_field()
	*
	*  Create the HTML interface for your field
	*
	*  @param	$field - an array holding all the field's data
	*
	*  @type	action
	*  @since	3.6
	*  @date	23/01/13
	*/
	
	function create_field( $field )
	{
		include( $this->settings['path'] . 'views/field.php' );
	}
	
	
	/*
	*  create_options()
	*
	*  Create extra options for your field. This is rendered when editing a field.
	*  The value of $field['name'] can be used (like bellow) to save extra data to the $field
	*
	*  @type	action
	*  @since	3.6
	*  @date	23/01/13
	*
	*  @param	$field	- an array holding all the field's data
	*/
	
	function create_options( $field )
	{
		include( $this->settings['path'] . 'views/options.php' );
	}
	
	
	/*
	*  update_value()
	*
	*  This filter is appied to the $value before it is updated in the db
	*
	*  @type	filter
	*  @since	3.6
	*  @date	23/01/13
	*
	*  @param	$value - the value which will be saved in the database
	*  @param	$field - the field array holding all the field options
	*  @param	$post_id - the $post_id of which the value will be saved
	*
	*  @return	$value - the modified value
	*/
	
	function update_value( $value, $post_id, $field )
	{
		$total = 0;
		
		if( $value )
		{
			// remove dummy field
			unset( $value['acfcloneindex'] );
			
			$i = -1;
			
			// loop through rows
			foreach( $value as $row )
			{	
				$i++;
				
				// increase total
				$total++;
					
				// loop through sub fields
				foreach( $field['sub_fields'] as $sub_field )
				{
					// get sub field data
					$v = isset( $row[$sub_field['key']] ) ? $row[$sub_field['key']] : false;
					
					// update full name
					$sub_field['name'] = $field['name'] . '_' . $i . '_' . $sub_field['name'];
					
					// save sub field value
					do_action('acf/update_value', $v, $post_id, $sub_field );
					
				}
			}
		}
		
		
		/*
		*  Remove Old Data
		*
		*  @credit: http://support.advancedcustomfields.com/discussion/1994/deleting-single-repeater-fields-does-not-remove-entry-from-database
		*/
		
		
		$old_total = (int) apply_filters('acf/load_value', 0, $post_id, $field);
		
		if( $old_total > $total )
		{
			for ( $j = $total; $j < $old_total; $j++ )
			{
				foreach( $field['sub_fields'] as $sub_field )
				{
					do_action('acf/delete_value', $post_id, $field['name'] . '_' . $j . '_' . $sub_field['name'] );
				}
			}
		}

		
		// update $value and return to allow for the normal save function to run
		$value = $total;
		
		
		return $value;
	}
	
	
	/*
	*  update_field()
	*
	*  This filter is appied to the $field before it is saved to the database
	*
	*  @type	filter
	*  @since	3.6
	*  @date	23/01/13
	*
	*  @param	$field - the field array holding all the field options
	*  @param	$post_id - the field group ID (post_type = acf)
	*
	*  @return	$field - the modified field
	*/

	function update_field( $field, $post_id )
	{
		// format sub_fields
		if( $field['sub_fields'] )
		{
			// remove dummy field
			unset( $field['sub_fields']['field_clone'] );
			
			
			// loop through and save fields
			$i = -1;
			$sub_fields = array();
			
			
			foreach( $field['sub_fields'] as $key => $f )
			{
				$i++;
				
				
				// order
				$f['order_no'] = $i;
				$f['key'] = $key;
				
				
				// save
				$f = apply_filters('acf/update_field/type=' . $f['type'], $f, $post_id ); // new filter
				
				
				// add
				$sub_fields[] = $f;
			}
			
			
			// update sub fields
			$field['sub_fields'] = $sub_fields;
			
		}
		
		
		// return updated repeater field
		return $field;
	}
	
	
	/*
	*  format_value()
	*
	*  This filter is appied to the $value after it is loaded from the db and before it is passed to the create_field action
	*
	*  @type	filter
	*  @since	3.6
	*  @date	23/01/13
	*
	*  @param	$value	- the value which was loaded from the database
	*  @param	$post_id - the $post_id from which the value was loaded
	*  @param	$field	- the field array holding all the field options
	*
	*  @return	$value	- the modified value
	*/
	
	function format_value( $value, $post_id, $field )
	{
		// vars
		$values = array();


		if( $value > 0 )
		{
			// loop through rows
			for($i = 0; $i < $value; $i++)
			{
				// loop through sub fields
				foreach( $field['sub_fields'] as $sub_field )
				{
					// update full name
					$key = $sub_field['key'];
					$sub_field['name'] = $field['name'] . '_' . $i . '_' . $sub_field['name'];
					
					$v = apply_filters('acf/load_value', false, $post_id, $sub_field);
					$v = apply_filters('acf/format_value', $v, $post_id, $sub_field);
					
					$values[ $i ][ $key ] = $v;
					
				}
			}
		}
		
		
		// return
		return $values;
	}
	
	
	/*
	*  format_value_for_api()
	*
	*  This filter is appied to the $value after it is loaded from the db and before it is passed back to the api functions such as the_field
	*
	*  @type	filter
	*  @since	3.6
	*  @date	23/01/13
	*
	*  @param	$value	- the value which was loaded from the database
	*  @param	$post_id - the $post_id from which the value was loaded
	*  @param	$field	- the field array holding all the field options
	*
	*  @return	$value	- the modified value
	*/
	
	function format_value_for_api( $value, $post_id, $field )
	{
		// vars
		$values = array();
		
		
		if( $value > 0 )
		{
			// loop through rows
			for($i = 0; $i < $value; $i++)
			{
				// loop through sub fields
				foreach( $field['sub_fields'] as $sub_field )
				{
					// update full name
					$key = $sub_field['name'];
					$sub_field['name'] = $field['name'] . '_' . $i . '_' . $sub_field['name'];
					
					$v = apply_filters('acf/load_value', false, $post_id, $sub_field);
					$v = apply_filters('acf/format_value_for_api', $v, $post_id, $sub_field);
					
					$values[ $i ][ $key ] = $v;
					
				}
			}
		}
		
		
		// return
		return $values;
	}
	
}

new acf_field_repeater();

?>