<?php

if ( ! class_exists( 'acf_field__group' ) ) :

	class acf_field__group extends acf_field {


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

		function initialize() {

			// vars
			$this->name      = 'group';
			$this->label     = __( 'Group', 'acf' );
			$this->category  = 'layout';
			$this->defaults  = array(
				'sub_fields' => array(),
				'layout'     => 'block',
			);
			$this->have_rows = 'single';

			// field filters
			$this->add_field_filter( 'acf/prepare_field_for_export', array( $this, 'prepare_field_for_export' ) );
			$this->add_field_filter( 'acf/prepare_field_for_import', array( $this, 'prepare_field_for_import' ) );

		}


		/*
		*  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 ) {

			// vars
			$sub_fields = acf_get_fields( $field );

			// append
			if ( $sub_fields ) {

				$field['sub_fields'] = $sub_fields;

			}

			// return
			return $field;

		}


		/*
		*  load_value()
		*
		*  This filter is applied to the $value after it is loaded from the db
		*
		*  @type    filter
		*  @since   3.6
		*  @date    23/01/13
		*
		*  @param   $value (mixed) the value found in the database
		*  @param   $post_id (mixed) the $post_id from which the value was loaded
		*  @param   $field (array) the field array holding all the field options
		*  @return  $value
		*/

		function load_value( $value, $post_id, $field ) {

			// bail early if no sub fields
			if ( empty( $field['sub_fields'] ) ) {
				return $value;
			}

			// modify names
			$field = $this->prepare_field_for_db( $field );

			// load sub fields
			$value = array();

			// loop
			foreach ( $field['sub_fields'] as $sub_field ) {

				// load
				$value[ $sub_field['key'] ] = acf_get_value( $post_id, $sub_field );

			}

			// return
			return $value;

		}


		/*
		*  format_value()
		*
		*  This filter is appied to the $value after it is loaded from the db and before it is returned to the template
		*
		*  @type    filter
		*  @since   3.6
		*  @date    23/01/13
		*
		*  @param   $value (mixed) the value which was loaded from the database
		*  @param   $post_id (mixed) the $post_id from which the value was loaded
		*  @param   $field (array) the field array holding all the field options
		*
		*  @return  $value (mixed) the modified value
		*/

		function format_value( $value, $post_id, $field ) {

			// bail early if no value
			if ( empty( $value ) ) {
				return false;
			}

			// modify names
			$field = $this->prepare_field_for_db( $field );

			// loop
			foreach ( $field['sub_fields'] as $sub_field ) {

				// extract value
				$sub_value = acf_extract_var( $value, $sub_field['key'] );

				// format value
				$sub_value = acf_format_value( $sub_value, $post_id, $sub_field );

				// append to $row
				$value[ $sub_field['_name'] ] = $sub_value;

			}

			// return
			return $value;

		}


		/*
		*  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 ) {

			// bail early if no value
			if ( ! acf_is_array( $value ) ) {
				return null;
			}

			// bail early if no sub fields
			if ( empty( $field['sub_fields'] ) ) {
				return null;
			}

			// modify names
			$field = $this->prepare_field_for_db( $field );

			// loop
			foreach ( $field['sub_fields'] as $sub_field ) {

				// vars
				$v = false;

				// key (backend)
				if ( isset( $value[ $sub_field['key'] ] ) ) {

					$v = $value[ $sub_field['key'] ];

					// name (frontend)
				} elseif ( isset( $value[ $sub_field['_name'] ] ) ) {

					$v = $value[ $sub_field['_name'] ];

					// empty
				} else {

					// input is not set (hidden by conditioanl logic)
					continue;

				}

				// update value
				acf_update_value( $v, $post_id, $sub_field );

			}

			// return
			return '';

		}


		/*
		*  prepare_field_for_db
		*
		*  This function will modify sub fields ready for update / load
		*
		*  @type    function
		*  @date    4/11/16
		*  @since   5.5.0
		*
		*  @param   $field (array)
		*  @return  $field
		*/

		function prepare_field_for_db( $field ) {

			// bail early if no sub fields
			if ( empty( $field['sub_fields'] ) ) {
				return $field;
			}

			// loop
			foreach ( $field['sub_fields'] as &$sub_field ) {

				// prefix name
				$sub_field['name'] = $field['name'] . '_' . $sub_field['_name'];

			}

			// return
			return $field;

		}


		/*
		*  render_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 render_field( $field ) {

			// bail early if no sub fields
			if ( empty( $field['sub_fields'] ) ) {
				return;
			}

			// load values
			foreach ( $field['sub_fields'] as &$sub_field ) {

				// add value
				if ( isset( $field['value'][ $sub_field['key'] ] ) ) {

					// this is a normal value
					$sub_field['value'] = $field['value'][ $sub_field['key'] ];

				} elseif ( isset( $sub_field['default_value'] ) ) {

					// no value, but this sub field has a default value
					$sub_field['value'] = $sub_field['default_value'];

				}

				// update prefix to allow for nested values
				$sub_field['prefix'] = $field['name'];

				// restore required
				if ( $field['required'] ) {
					$sub_field['required'] = 0;
				}
			}

			// render
			if ( $field['layout'] == 'table' ) {

				$this->render_field_table( $field );

			} else {

				$this->render_field_block( $field );

			}

		}


		/*
		*  render_field_block
		*
		*  description
		*
		*  @type    function
		*  @date    12/07/2016
		*  @since   5.4.0
		*
		*  @param   $post_id (int)
		*  @return  $post_id (int)
		*/

		function render_field_block( $field ) {

			// vars
			$label_placement = ( $field['layout'] == 'block' ) ? 'top' : 'left';

			// html
			echo '<div class="acf-fields -' . $label_placement . ' -border">';

			foreach ( $field['sub_fields'] as $sub_field ) {

				acf_render_field_wrap( $sub_field );

			}

			echo '</div>';

		}


		/*
		*  render_field_table
		*
		*  description
		*
		*  @type    function
		*  @date    12/07/2016
		*  @since   5.4.0
		*
		*  @param   $post_id (int)
		*  @return  $post_id (int)
		*/

		function render_field_table( $field ) {

			?>
<table class="acf-table">
	<thead>
		<tr>
			<?php
			foreach ( $field['sub_fields'] as $sub_field ) :

				// prepare field (allow sub fields to be removed)
				$sub_field = acf_prepare_field( $sub_field );

				// bail early if no field
				if ( ! $sub_field ) {
					continue;
				}

				// vars
				$atts              = array();
				$atts['class']     = 'acf-th';
				$atts['data-name'] = $sub_field['_name'];
				$atts['data-type'] = $sub_field['type'];
				$atts['data-key']  = $sub_field['key'];

				// Add custom width
				if ( $sub_field['wrapper']['width'] ) {

					$atts['data-width'] = $sub_field['wrapper']['width'];
					$atts['style']      = 'width: ' . $sub_field['wrapper']['width'] . '%;';

				}

				?>
			<th <?php echo acf_esc_attrs( $atts ); ?>>
				<?php acf_render_field_label( $sub_field ); ?>
				<?php acf_render_field_instructions( $sub_field ); ?>
			</th>
			<?php endforeach; ?>
		</tr>
	</thead>
	<tbody>
		<tr class="acf-row">
			<?php

			foreach ( $field['sub_fields'] as $sub_field ) {

				acf_render_field_wrap( $sub_field, 'td' );

			}

			?>
		</tr>
	</tbody>
</table>
			<?php

		}


		/*
		*  render_field_settings()
		*
		*  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 render_field_settings( $field ) {

			// vars
			$args = array(
				'fields'      => $field['sub_fields'],
				'parent'      => $field['ID'],
				'is_subfield' => true,
			);

			?>
			<div class="acf-field acf-field-setting-sub_fields" data-setting="group" data-name="sub_fields">
				<div class="acf-label">
					<label><?php _e( 'Sub Fields', 'acf' ); ?></label>	
				</div>
				<div class="acf-input acf-input-sub">
					<?php

					acf_get_view( 'field-group-fields', $args );

					?>
				</div>
			</div>
			<?php

			// layout
			acf_render_field_setting(
				$field,
				array(
					'label'        => __( 'Layout', 'acf' ),
					'instructions' => __( 'Specify the style used to render the selected fields', 'acf' ),
					'type'         => 'radio',
					'name'         => 'layout',
					'layout'       => 'horizontal',
					'choices'      => array(
						'block' => __( 'Block', 'acf' ),
						'table' => __( 'Table', 'acf' ),
						'row'   => __( 'Row', 'acf' ),
					),
				)
			);

		}


		/*
		*  validate_value
		*
		*  description
		*
		*  @type    function
		*  @date    11/02/2014
		*  @since   5.0.0
		*
		*  @param   $post_id (int)
		*  @return  $post_id (int)
		*/

		function validate_value( $valid, $value, $field, $input ) {

			// bail early if no $value
			if ( empty( $value ) ) {
				return $valid;
			}

			// bail early if no sub fields
			if ( empty( $field['sub_fields'] ) ) {
				return $valid;
			}

			// loop
			foreach ( $field['sub_fields'] as $sub_field ) {

				// get sub field
				$k = $sub_field['key'];

				// bail early if value not set (conditional logic?)
				if ( ! isset( $value[ $k ] ) ) {
					continue;
				}

				// required
				if ( $field['required'] ) {
					$sub_field['required'] = 1;
				}

				// validate
				acf_validate_value( $value[ $k ], $sub_field, "{$input}[{$k}]" );

			}

			// return
			return $valid;

		}


		/*
		*  duplicate_field()
		*
		*  This filter is appied to the $field before it is duplicated and saved to the database
		*
		*  @type    filter
		*  @since   3.6
		*  @date    23/01/13
		*
		*  @param   $field - the field array holding all the field options
		*
		*  @return  $field - the modified field
		*/

		function duplicate_field( $field ) {

			// get sub fields
			$sub_fields = acf_extract_var( $field, 'sub_fields' );

			// save field to get ID
			$field = acf_update_field( $field );

			// duplicate sub fields
			acf_duplicate_fields( $sub_fields, $field['ID'] );

			// return
			return $field;

		}

		/**
		 * prepare_field_for_export
		 *
		 * Prepares the field for export.
		 *
		 * @date    11/03/2014
		 * @since   5.0.0
		 *
		 * @param   array $field The field settings.
		 * @return  array
		 */
		function prepare_field_for_export( $field ) {

			// Check for sub fields.
			if ( ! empty( $field['sub_fields'] ) ) {
				$field['sub_fields'] = acf_prepare_fields_for_export( $field['sub_fields'] );
			}
			return $field;
		}

		/**
		 * prepare_field_for_import
		 *
		 * Returns a flat array of fields containing all sub fields ready for import.
		 *
		 * @date    11/03/2014
		 * @since   5.0.0
		 *
		 * @param   array $field The field settings.
		 * @return  array
		 */
		function prepare_field_for_import( $field ) {

			// Check for sub fields.
			if ( ! empty( $field['sub_fields'] ) ) {
				$sub_fields = acf_extract_var( $field, 'sub_fields' );

				// Modify sub fields.
				foreach ( $sub_fields as $i => $sub_field ) {
					$sub_fields[ $i ]['parent']     = $field['key'];
					$sub_fields[ $i ]['menu_order'] = $i;
				}

				// Return array of [field, sub_1, sub_2, ...].
				return array_merge( array( $field ), $sub_fields );

			}
			return $field;
		}


		/*
		*  delete_value
		*
		*  Called when deleting this field's value.
		*
		*  @date    1/07/2015
		*  @since   5.2.3
		*
		*  @param   mixed $post_id The post ID being saved
		*  @param   string $meta_key The field name as seen by the DB
		*  @param   array $field The field settings
		*  @return  void
		*/

		function delete_value( $post_id, $meta_key, $field ) {

			// bail early if no sub fields
			if ( empty( $field['sub_fields'] ) ) {
				return null;
			}

			// modify names
			$field = $this->prepare_field_for_db( $field );

			// loop
			foreach ( $field['sub_fields'] as $sub_field ) {
				acf_delete_value( $post_id, $sub_field );
			}
		}

		/**
		 *  delete_field
		 *
		 *  Called when deleting a field of this type.
		 *
		 *  @date    8/11/18
		 *  @since   5.8.0
		 *
		 *  @param   arra $field The field settings.
		 *  @return  void
		 */
		function delete_field( $field ) {

			// loop over sub fields and delete them
			if ( $field['sub_fields'] ) {
				foreach ( $field['sub_fields'] as $sub_field ) {
					acf_delete_field( $sub_field['ID'] );
				}
			}
		}

		/**
		 * Return the schema array for the REST API.
		 *
		 * @param array $field
		 * @return array
		 */
		public function get_rest_schema( array $field ) {
			$schema = array(
				'type'       => array( 'object', 'null' ),
				'properties' => array(),
				'required'   => ! empty( $field['required'] ),
			);

			foreach ( $field['sub_fields'] as $sub_field ) {
				if ( $sub_field_schema = acf_get_field_rest_schema( $sub_field ) ) {
					$schema['properties'][ $sub_field['name'] ] = $sub_field_schema;
				}
			}

			return $schema;
		}

		/**
		 * Apply basic formatting to prepare the value for default REST output.
		 *
		 * @param mixed      $value
		 * @param int|string $post_id
		 * @param array      $field
		 * @return array|mixed
		 */
		public function format_value_for_rest( $value, $post_id, array $field ) {
			if ( empty( $value ) || ! is_array( $value ) || empty( $field['sub_fields'] ) ) {
				return $value;
			}

			// Loop through each row and within that, each sub field to process sub fields individually.
			foreach ( $field['sub_fields'] as $sub_field ) {

				// Extract the sub field 'field_key'=>'value' pair from the $value and format it.
				$sub_value = acf_extract_var( $value, $sub_field['key'] );
				$sub_value = acf_format_value_for_rest( $sub_value, $post_id, $sub_field );

				// Add the sub field value back to the $value but mapped to the field name instead
				// of the key reference.
				$value[ $sub_field['name'] ] = $sub_value;
			}

			return $value;
		}

	}


	// initialize
	acf_register_field_type( 'acf_field__group' );

endif; // class_exists check

?>
