<?php

class acf_field_table extends acf_field {

	/*
	*  __construct
	*
	*  This function will setup the field type data
	*
	*  @type	function
	*  @date	29/12/2014
	*  @since	5.0.0
	*
	*  @param	n/a
	*  @return	n/a
	*/

	function __construct() {

		/*
		*  settings (array) Array of settings
		*/
		$this->settings = array(
			'version' => '1.3.0',
			'dir_url' => plugins_url( '', __FILE__ ) . '/',
		);

		/*
		*  name (string) Single word, no spaces. Underscores allowed
		*/

		$this->name = 'table';

		/*
		*  label (string) Multiple words, can include spaces, visible when selecting a field type
		*/

		$this->label = __('Table', 'acf-table');

		/*
		*  category (string) basic | content | choice | relational | jquery | layout | CUSTOM GROUP NAME
		*/

		$this->category = 'layout';

		/*
		*  defaults (array) Array of default settings which are merged into the field object. These are used later in settings
		*/

		$this->defaults = array(
			//'font_size'	=> 14,
		);

		/*
		*  l10n (array) Array of strings that are used in JavaScript. This allows JS strings to be translated in PHP and loaded via:
		*  var message = acf._e('table', 'error');
		*/

		$this->l10n = array(
			//'error'	=> __('Error! Please enter a higher value.', 'acf-table'),
		);

		// do not delete!
		parent::__construct();

		// PREVENTS SAVING INVALID TABLE FIELD JSON DATA {

			add_filter( 'update_post_metadata', function( $x, $object_id, $meta_key, $meta_value, $prev_value ) {

				// detecting ACF table json
				if (
					is_string( $meta_value ) and
					strpos( $meta_value, '"acftf":{' ) !== false
				) {

					// is new value a valid json string
					json_decode( $meta_value );

					if ( json_last_error() !== JSON_ERROR_NONE ) {

						// canceling meta value uptdate
						error_log( 'The plugin advanced-custom-fields-table-field prevented a third party update_post_meta( ' . $object_id . ', "' . $meta_key . '", $value ); action that would save a broken JSON string.' . "\n" . 'For details see https://codex.wordpress.org/Function_Reference/update_post_meta#Character_Escaping.' );
						return true;
					}
				}

			}, 10, 5 );

		// }

	}

	/*
	*  render_field_settings()
	*
	*  Create extra settings for your field. These are visible when editing a field
	*
	*  @type	action
	*  @since	3.6
	*  @date	23/01/13
	*
	*  @param	$field (array) the $field being edited
	*  @return	n/a
	*/

	function render_field_settings( $field ) {

		/*
		*  acf_render_field_setting
		*
		*  This function will create a setting for your field. Simply pass the $field parameter and an array of field settings.
		*  The array of settings does not require a `value` or `prefix`; These settings are found from the $field array.
		*
		*  More than one setting can be added by copy/paste the above code.
		*  Please note that you must also have a matching $defaults value for the field name (font_size)
		*/

		acf_render_field_setting( $field, array(
			'label'			=> __('Table Header','acf-table'),
			'instructions'	=> __('Presetting the usage of table header','acf-table'),
			'type'			=> 'radio',
			'name'			=> 'use_header',
			'choices'   	=>  array(
				0   =>  __( "Optional", 'acf-table' ),
				1   =>  __( "Yes", 'acf-table' ),
				2   =>  __( "No", 'acf-table' ),
			),
			'layout'		=>  'horizontal',
			'default_value'	=> 0,
		));

		acf_render_field_setting( $field, array(
			'label'			=> __('Table Caption','acf-table'),
			'instructions'	=> __('Presetting the usage of table caption','acf-table'),
			'type'			=> 'radio',
			'name'			=> 'use_caption',
			'choices'   	=>  array(
				1   =>  __( "Yes", 'acf-table' ),
				2   =>  __( "No", 'acf-table' ),
			),
			'layout'		=>  'horizontal',
			'default_value'	=> 2,
		));

	}

	/*
	*  render_field()
	*
	*  Create the HTML interface for your field
	*
	*  @param	$field (array) the $field being rendered
	*
	*  @type	action
	*  @since	3.6
	*  @date	23/01/13
	*
	*  @param	$field (array) the $field being edited
	*  @return	n/a
	*/

	function render_field( $field ) {

		/*
		*  Review the data of $field.
		*  This will show what data is available
		*/

		if ( empty( $field['use_header'] ) ) {

			$field['use_header'] = 0;
		}

		if ( empty( $field['use_caption'] ) ) {

			$field['use_caption'] = 0;
		}

		$data_field['use_header'] = $field['use_header'];
		$data_field['use_caption'] = $field['use_caption'];

		$e = '';

		$e .= '<div class="acf-table-root">';

			$e .= '<div class="acf-table-optionwrap">';

				// OPTION HEADER {

					if ( $data_field['use_header'] === 0 ) {

						$e .= '<div class="acf-table-optionbox">';
							$e .= '<label for="acf-table-opt-use-header">' . __( 'use table header', 'acf-table' ) . ' </label>';
							$e .= '<select class="acf-table-optionbox-field acf-table-fc-opt-use-header" id="acf-table-opt-use-header" name="acf-table-opt-use-header">';
								$e .= '<option value="0">' . __( 'No', 'acf-table' ) . '</option>';
								$e .= '<option value="1">' . __( 'Yes', 'acf-table' ) . '</option>';
							$e .= '</select>';
						$e .= '</div>';
					}

				// }

				// OPTION CAPTION {

					if ( $data_field['use_caption'] === 1 ) {

						$e .= '<div class="acf-table-optionbox">';
							$e .= '<label for="acf-table-opt-caption">' . __( 'table caption', 'acf-table' ) . ' </label><br>';
							$e .= '<input class="acf-table-optionbox-field acf-table-fc-opt-caption" id="acf-table-opt-caption" type="text" name="acf-table-opt-caption" value=""></input>';
						$e .= '</div>';
					}

				// }

			$e .= '</div>';

			if ( is_array( $field['value'] ) ) {

				$field['value'] = wp_json_encode( $field['value'] );
			}

			if ( is_string( $field['value'] ) ) {

				if ( substr( $field['value'] , 0 , 1 ) === '{' ) {

					$field['value'] = urlencode( $field['value'] );
				}
			}

			$e .= '<div class="acf-input-wrap">';
				$e .= '<input type="hidden" data-field-options="' . urlencode( wp_json_encode( $data_field ) ) . '" id="' . esc_attr( $field['id'] ) . '"  class="' . esc_attr( $field['type'] ) . '" name="' . esc_attr( $field['name'] ) . '" value="' . $field['value'] . '"/>';
			$e .= '</div>';

		$e .= '</div>';

		echo $e;

	}

	/*
	*  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 render_field() action.
	*
	*  @type	action (admin_enqueue_scripts)
	*  @since	3.6
	*  @date	23/01/13
	*
	*  @param	n/a
	*  @return	n/a
	*/

	function input_admin_enqueue_scripts() {

		// register & include JS
		wp_enqueue_script( 'acf-input-table', $this->settings['dir_url'] . 'js/input-v5.js', array( 'jquery', 'acf-input' ), $this->settings['version'], true );

		// register & include CSS
		wp_register_style( 'acf-input-table', $this->settings['dir_url'] . 'css/input.css', array( 'acf-input' ), $this->settings['version'] );
		wp_enqueue_style( 'acf-input-table' );

	}

	/*
	*  input_admin_head()
	*
	*  This action is called in the admin_head action on the edit screen where your field is created.
	*  Use this action to add CSS and JavaScript to assist your render_field() action.
	*
	*  @type	action (admin_head)
	*  @since	3.6
	*  @date	23/01/13
	*
	*  @param	n/a
	*  @return	n/a
	*/

	/*

	function input_admin_head() {

	}

	*/

	/*
   	*  input_form_data()
   	*
   	*  This function is called once on the 'input' page between the head and footer
   	*  There are 2 situations where ACF did not load during the 'acf/input_admin_enqueue_scripts' and
   	*  'acf/input_admin_head' actions because ACF did not know it was going to be used. These situations are
   	*  seen on comments / user edit forms on the front end. This function will always be called, and includes
   	*  $args that related to the current screen such as $args['post_id']
   	*
   	*  @type	function
   	*  @date	6/03/2014
   	*  @since	5.0.0
   	*
   	*  @param	$args (array)
   	*  @return	n/a
   	*/

	/*

   	function input_form_data( $args ) {

   	}

   	*/

	/*
	*  input_admin_footer()
	*
	*  This action is called in the admin_footer action on the edit screen where your field is created.
	*  Use this action to add CSS and JavaScript to assist your render_field() action.
	*
	*  @type	action (admin_footer)
	*  @since	3.6
	*  @date	23/01/13
	*
	*  @param	n/a
	*  @return	n/a
	*/

	/*

	function input_admin_footer() {

	}

	*/

	/*
	*  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 render_field_options() action.
	*
	*  @type	action (admin_enqueue_scripts)
	*  @since	3.6
	*  @date	23/01/13
	*
	*  @param	n/a
	*  @return	n/a
	*/

	/*

	function field_group_admin_enqueue_scripts() {

	}

	*/

	/*
	*  field_group_admin_head()
	*
	*  This action is called in the admin_head action on the edit screen where your field is edited.
	*  Use this action to add CSS and JavaScript to assist your render_field_options() action.
	*
	*  @type	action (admin_head)
	*  @since	3.6
	*  @date	23/01/13
	*
	*  @param	n/a
	*  @return	n/a
	*/

	/*

	function field_group_admin_head() {

	}

	*/

	/*
	*  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 ) {

		return $value;

	}

	*/

	/*
	*  update_value()
	*
	*  This filter is applied to the $value before it is saved in 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 update_value( $value, $post_id, $field ) {

		if ( is_string( $value ) ) {

			$value = urldecode( str_replace( '%5C', '%5C%5C', $value ) );
		}

		if ( is_array( $value ) ) {

			$data = get_post_meta( $post_id, $field['name'], true );
			$data = json_decode( $data, true );

			if ( isset( $value['caption'] ) ) {

				$data['p']['ca'] = $value['caption'];
			}

			if ( isset( $value['header'] ) ) {

				$data['h'] = $value['header'];
			}

			if ( isset( $value['body'] ) ) {

				$data['b'] = $value['body'];
			}

			$value = wp_slash( json_encode( $data ) );
		}

		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 ) {

		$a = json_decode( $value, true );

		$value = false;

		// IF BODY DATA

		if (
			null !== $a['b'] &&
			count( $a['b'] ) > 0
		) {

			// IF HEADER DATA

			if ( $a['p']['o']['uh'] === 1 ) {

				$value['header'] = $a['h'];
			}
			else {

				$value['header'] = false;
			}

			// IF CAPTION DATA

			if (
				! empty( $field['use_caption'] ) AND
				$field['use_caption'] === 1 AND
				! empty( $a['p']['ca'] )
			) {

				$value['caption'] = $a['p']['ca'];
			}
			else {

				$value['caption'] = false;
			}

			// BODY

			$value['body'] = $a['b'];

			// IF SINGLE EMPTY CELL, THEN DO NOT RETURN TABLE DATA

			if (
				count( $a['b'] ) === 1
				AND count( $a['b'][0] ) === 1
				AND trim( $a['b'][0][0]['c'] ) === ''
			) {

				$value = false;
			}
		}

		return $value;
	}

	/*
	*  validate_value()
	*
	*  This filter is used to perform validation on the value prior to saving.
	*  All values are validated regardless of the field's required setting. This allows you to validate and return
	*  messages to the user if the value is not correct
	*
	*  @type	filter
	*  @date	11/02/2014
	*  @since	5.0.0
	*
	*  @param	$valid (boolean) validation status based on the value and the field's required setting
	*  @param	$value (mixed) the $_POST value
	*  @param	$field (array) the field array holding all the field options
	*  @param	$input (string) the corresponding input name for $_POST value
	*  @return	$valid
	*/

	/*

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

		// Basic usage
		if( $value < $field['custom_minimum_setting'] )
		{
			$valid = false;
		}

		// Advanced usage
		if( $value < $field['custom_minimum_setting'] )
		{
			$valid = __('The value is too little!','acf-table'),
		}

		// return
		return $valid;

	}

	*/

	/*
	*  delete_value()
	*
	*  This action is fired after a value has been deleted from the db.
	*  Please note that saving a blank value is treated as an update, not a delete
	*
	*  @type	action
	*  @date	6/03/2014
	*  @since	5.0.0
	*
	*  @param	$post_id (mixed) the $post_id from which the value was deleted
	*  @param	$key (string) the $meta_key which the value was deleted
	*  @return	n/a
	*/

	/*

	function delete_value( $post_id, $key ) {

	}

	*/

	/*
	*  load_field()
	*
	*  This filter is applied to the $field after it is loaded from the database
	*
	*  @type	filter
	*  @date	23/01/2013
	*  @since	3.6.0
	*
	*  @param	$field (array) the field array holding all the field options
	*  @return	$field
	*/

	/*

	function load_field( $field ) {

		return $field;

	}

	*/

	/*
	*  update_field()
	*
	*  This filter is applied to the $field before it is saved to the database
	*
	*  @type	filter
	*  @date	23/01/2013
	*  @since	3.6.0
	*
	*  @param	$field (array) the field array holding all the field options
	*  @return	$field
	*/

	/*

	function update_field( $field ) {

		return $field;

	}

	*/

	/*
	*  delete_field()
	*
	*  This action is fired after a field is deleted from the database
	*
	*  @type	action
	*  @date	11/02/2014
	*  @since	5.0.0
	*
	*  @param	$field (array) the field array holding all the field options
	*  @return	n/a
	*/

	/*

	function delete_field( $field ) {

	}

	*/

}

// create field
new acf_field_table();