<?php namespace Xbox\Includes;

class Field {
	public $id             = 0;
	public $xbox           = null;
	public $in_mixed       = false;
	public $value          = null;
	public $index          = 0;
	public $parents        = array();
	public $args           = array();
	public $fields         = array();
	public $fields_objects = array();
	public $parent_type    = null;

	public function __construct( $field_args = array(), $xbox, $parent_object ){
		$this->id         = $field_args['id'];
		$this->xbox       = $xbox;
		$this->set_args( $field_args );

		if( is_a( $parent_object, 'Xbox\Includes\Field' ) ){
			$this->add_parent( $parent_object );
		}
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Acceso a cualquier método, evita errores al llamar a métodos inexistentes
	|---------------------------------------------------------------------------------------------------
	*/
	public function __call( $name, $arguments ) {
		if( Functions::starts_with( 'set_', $name ) && strlen( $name ) > 4 ){
			$property = substr( $name, 4 );
			if( property_exists( $this, $property ) && isset( $arguments[0] ) ){
				$this->$property = $arguments[0];
				return $this->$property;
			}
			return null;
		}
		else if( Functions::starts_with( 'get_', $name ) && strlen( $name ) > 4 ){
			$property = substr( $name, 4 );
			if( property_exists( $this, $property ) ){
				return $this->$property;
			}
			return null;
		}
		else if( property_exists( $this, $name ) ){
			return $this->$name;
		}
		else {
			$arg_sub_key = isset( $arguments[0] ) ? $arguments[0] : false;
			return $this->arg( $name, $arg_sub_key );
		}
	}
	/*
	|---------------------------------------------------------------------------------------------------
	| Acceso a cualquier argumento
	|---------------------------------------------------------------------------------------------------
	*/
	public function arg( $name = '', $key = '' ) {
		if( isset( $this->args[$name] ) ){
			if( $key ){
				if( isset( $this->args[$name][$key] ) ){
					return $this->args[$name][$key];
				} else {
					return null;
				}
			}
			return $this->args[$name];
		}
		return null;
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Establece los argumentos por defecto
	|---------------------------------------------------------------------------------------------------
	*/
	public function set_args( $field_args = array() ){
		$field_type = $field_args['type'];
		$default_args = array(
			'id'                       => '',
			'name'                     => '',
			'type'                     => '',
			'desc'                     => '',
			'desc_title'               => '',
			'default'                  => '',
			'attributes'               => array(),
			'options'                  => array(),
			'controls'                 => array(),
			'items'                    => array(),
			'items_desc'               => array(),
			'css'                      => array(),
			'row_class'                => '',
			'row_id'                   => '',
			'field_class'              => '',
			'field_id'                 => '',
			'action'                   => 'default',
			'grid'                     => '',
			'insert_before_row'        => '',
			'insert_after_row'         => '',
			'insert_before_name'       => '',
			'insert_after_name'        => '',
			'insert_before_field'      => '',
			'insert_after_field'       => '',
			'insert_before_repeatable' => '',
			'insert_after_repeatable'  => '',
			'append_in_field'          => '',
			'prepend_in_field'         => '',
			'repeatable'               => false,
			'import_data'            	 => array(),
			'sanitize_callback'        => null,
			'escape_callback'          => null,
		);
		$this->args = wp_parse_args( $field_args, $default_args );

		//Validate arguments
		//$this->args['name']                     = $this->validate_arg( 'name', 'string' );
		$this->args['attributes']               = $this->validate_arg( 'attributes', 'array' );
		$this->args['options']                  = $this->validate_arg( 'options', 'array' );
		$this->args['items']                    = $this->validate_arg( 'items', 'array' );
		$this->args['items_desc']               = $this->validate_arg( 'items_desc', 'array' );
		$this->args['css']                      = $this->validate_arg( 'css', 'array' );
		//$this->args['row_class']                = $this->validate_arg( 'row_class', 'string' );
		//$this->args['row_id']                   = $this->validate_arg( 'row_id', 'string' );
		//$this->args['field_class']              = $this->validate_arg( 'field_class', 'string' );
		//$this->args['field_id']                 = $this->validate_arg( 'field_id', 'string' );
		//$this->args['grid']                     = $this->validate_arg( 'grid', 'string' );
		$this->args['insert_before_row']        = $this->validate_arg( 'insert_before_row', 'html' );
		$this->args['insert_after_row']         = $this->validate_arg( 'insert_after_row', 'html' );
		$this->args['insert_before_name']       = $this->validate_arg( 'insert_before_name', 'html' );
		$this->args['insert_after_name']        = $this->validate_arg( 'insert_after_name', 'html' );
		$this->args['insert_before_field']      = $this->validate_arg( 'insert_before_field', 'html' );
		$this->args['insert_after_field']       = $this->validate_arg( 'insert_after_field', 'html' );
		$this->args['insert_before_repeatable'] = $this->validate_arg( 'insert_before_repeatable', 'html' );
		$this->args['insert_after_repeatable']  = $this->validate_arg( 'insert_after_repeatable', 'html' );
		$this->args['append_in_field']          = $this->validate_arg( 'append_in_field', 'html' );
		$this->args['prepend_in_field']         = $this->validate_arg( 'prepend_in_field', 'html' );
		$this->args['import_data']							= $this->validate_arg( 'import_data', 'array' );

		//Validamos campos que no pueden ser repetibles
		$this->args['repeatable'] = $this->validate_repeatable( $field_type );

		//Los campos repetibles no puedes ser múltiples
		if( $this->args['repeatable'] && isset( $this->args['options']['multiple'] ) ){
			$this->args['options']['multiple'] = false;
		}

		//Establecer valores de opciones por defecto
		$this->args['options'] = wp_parse_args( $this->args['options'],  array(
			'show_name' => true,
			'desc_tooltip' => false,
			'show_if' => array(),//array('field_id', '=,!=,<,<=,>,>=,in,not in', 'value:string|array'),
			'hide_if' => array(),//array('field_id', '=,!=,<,<=,>,>=,in,not in', 'value:string|array'),
			'show_hide_effect' => 'default',//default,fade,slide
			'show_hide_delay' => 10,
		));

		//Establecer valores por defecto a la opción de css
		$this->args['css'] = wp_parse_args( $this->args['css'],  array(
			'selector' => '',
			'property' => '',
			'value' => '{value}',
			'important' => false,
		));

		//Establecer opciones por defecto para cada tipo de campo
		switch( $field_type ){
			case 'button':
				$this->args['options'] = wp_parse_args( $this->args['options'], array(
					'color' => 'blue',//blue,lightblue,green,teal,red,pink,dark,purple,bluepurple,yellow,orange
					'size' => 'normal',//tiny,small,normal,medium,large,big
					'tag' => 'a',//a,button,input
					'icon' => ''//<i class="xbox-icon xbox-icon-plus"></i>//font awesome icons
				));
				break;

			case 'colorpicker':
				$this->args['options'] = wp_parse_args( $this->args['options'], array(
					'format' => 'hex',
					'opacity' => 1,
					'show_default_button' => true,
				));
				$this->args['default'] = $this->validate_colorpicker( $this->validate_arg( 'default', 'string' ) );
				break;

			case 'code_editor':
				$this->args['options'] = wp_parse_args( $this->args['options'], array(
					'language'	=> 'javascript',//css, php, javascript, html, xml. Default: javascript
					'theme'			=> 'tomorrow_night',// ambiance, chrome, cobalt, dreamweaver, monokai, solarized_light
					'height'		=> '240px'
				));
				break;

			case 'file':
				$this->args['options'] = array_replace_recursive( array(
					'multiple'             => false,
					'mime_types'           => array(),
					'protocols'						 => array(),
					'preview_size'         => array( 'width' => '64px', 'height' => 'auto' ),
					'synchronize_selector' => '',
					'upload_file_text'     => __( 'Upload file', 'xbox' ),
					'upload_file_class'    => ''
				), $this->args['options'] );

				if( array_intersect( array( 'jpg', 'jpeg', 'png', 'gif', 'ico', 'icon' ),
					$this->args['options']['mime_types'] ) ){
					$this->args['options']['upload_file_text'] = __( 'Upload image', 'xbox' );
				}
				if( array_intersect( array( 'mp4', 'webm', 'ogv', 'ogg', 'vp8' ),
					$this->args['options']['mime_types'] ) ){
					$this->args['options']['upload_file_text'] = __( 'Upload video', 'xbox' );
					$this->args['options']['preview_size'] = array( 'width' => '100%', 'height' => '260px' );
				}
				break;

			case 'group':
				$this->args['options'] = array_replace_recursive( array(
					'add_item_text'  => _x( 'Add new', 'New item for groups', 'xbox' ),
					'remove_item_text' => _x( 'Remove', 'Remove item for groups', 'xbox' ),
					'sortable' => true,
				), $this->args['options'] );

				$this->args['controls'] = array_replace_recursive( array(
					'name' => 'Group Item #',
					'default_type' => 'default',
					'readonly_name' => true,//Determines whether the control input will be editable. Default: true
					'images' => false,
					'default_image' => XBOX_URL.'/img/transparent.png',
					'image_field_id' => '',
					'position' => 'top',//top, left
					'width' => '',
					'height' => '',
					'left_actions'  => array(
						'xbox-info-order-item' => '#'
					),
					'right_actions'  => array(
						'xbox-duplicate-group-item' => '<i class="dashicons dashicons-admin-page"></i>',
						'xbox-remove-group-item' => '<i class="xbox-icon xbox-icon-trash"></i>'
					),
				), $this->args['controls'] );
				break;

			case 'image':
				$this->args['options'] = wp_parse_args( $this->args['options'],  array(
					'hide_input' => false,
					'image_class' => '',
				));
				break;

			case 'image_selector':
				$this->args['options'] = wp_parse_args( $this->args['options'],  array(
					'width'        => '100px',
					'height'       => 'auto',
					'active_class' => 'xbox-active',
					'active_color' => '#379FE7',
					'in_line'			 => true,
					'like_checkbox' => false
				));
				break;

			case 'icon_selector':
				$this->args['options'] = wp_parse_args( $this->args['options'],  array(
					'wrap_height'    => '170px',
					'size'           => '36px',
					'active_class'   => 'xbox-active',
					'load_with_ajax' => false,
					'ajax_data'      => array('class_name' => '', 'function_name' => ''),
					'hide_search'    => false,
					'hide_buttons'   => false,
				));
				break;

			case 'import':
				$this->args['default'] = empty( $this->args['default'] ) ? 'from_file' : $this->args['default'];
				$this->args['options'] = wp_parse_args( $this->args['options'],  array(
					'import_from_file'   => true,
					'import_from_url'    => true,
					'width'              => '100px',
					'height'             => 'auto',
					'active_class'       => 'xbox-active',
					'active_color'       => '#379FE7',
					'in_line'			       => true,
					'like_checkbox'			 => false,
					'import_button_text' => __( 'Import', 'xbox' ),
				));
				//$this->args['import_data'] = wp_parse_args( $this->args['import_data'],  array() );

				$this->args['items'] = wp_parse_args( array(
					'from_file' => _x( 'From file', 'Import/Export field', 'xbox' ),
					'from_url' => _x( 'From url', 'Import/Export field', 'xbox' )
				) , $this->args['items']);
				if( ! $this->args['options']['import_from_file'] ){
					unset( $this->args['items']['from_file'] );
				}
				if( ! $this->args['options']['import_from_url'] ){
					unset( $this->args['items']['from_url'] );
				}
				break;

			case 'export':
				$this->args['options'] = wp_parse_args( $this->args['options'],  array(
					'export_button_text'  => __( 'Download', 'xbox' ),
				));
				break;

			case 'number':
				$this->args['options'] = wp_parse_args( $this->args['options'], array(
					'unit' => 'px',
					'show_unit' => true,
					'show_spinner' => false,
					'disable_spinner' => false,
					'unit_picker' => array()
				));
				$this->args['attributes'] = wp_parse_args( $this->args['attributes'], array(
					'min'       => 'null',
					'max'       => 'null',
					'step'      => 1,
					'precision' => 0,
				));
				break;

			case 'oembed':
				$this->args['options'] = array_replace_recursive( array(
					'oembed_class' => '',
					'preview_onload' => false,
					'preview_size' => array( 'width' => '100%', 'height' => '200px' ),
					'get_preview_text' => __( 'Get preview', 'xbox' )
				), $this->args['options'] );
				break;

			case 'radio':
			case 'checkbox':
				$this->args['options'] = wp_parse_args( $this->args['options'],  array(
					'in_line' => true,
				));
				if( $field_type == 'checkbox' ){
					$this->args['options'] = wp_parse_args( $this->args['options'],  array(
						'sortable' => false,
					));
				}
				//Nota: El argumento 'default' de los checkboxs puede aceptar el comodín '$all$' o array('$all$') para activar todos sus items por defecto.
				break;

			case 'section':
				$this->args['options'] = wp_parse_args( $this->args['options'],  array(
					'toggle' => false,
					'toggle_default' => 'open',//open,close
					'toggle_effect' => 'slide',
					'toggle_target' => 'header',//header, icon
					'toggle_speed' => 400,
					'toggle_open_icon' => 'xbox-icon-chevron-up',
					'toggle_close_icon' => 'xbox-icon-chevron-down',
				));
				break;

			case 'select':
				$max_selections = 1;
				if( ! empty( $this->args['options']['multiple'] ) ){
					$max_selections = 3;
				}
				$this->args['options'] = wp_parse_args( $this->args['options'],  array(
					'sort'           => false,
					'multiple'       => false,
					'search'         => false,
					'max_selections' => $max_selections,
                    'sort_by_values' => false,
				));
				$this->args['options']['sort'] = $this->args['options']['sort'] === true ? 'asc' : $this->args['options']['sort'];
				$this->args['attributes'] = wp_parse_args( $this->args['attributes'],  array(
					'placeholder' => 'Select option',
				));
				break;

			case 'switcher':
				$this->args['default'] = empty( $this->args['default'] ) ? 'off' : $this->args['default'];
				$this->args['options'] = wp_parse_args( $this->args['options'],  array(
					'on_text'   => '',
					'off_text'  => '',
					'on_value'  => 'on',
					'off_value' => 'off'
				));
				break;

			case 'tab':
				if( isset( $this->args['options']['main_tab'] ) && $this->args['options']['main_tab'] == true ){
					$this->args['options']['skin'] = 'dark';//Tab principal siempre es dark
					$this->args['options']['on_left'] = true;//Tab principal siempre es a la izquierda
				} else {
					$this->args['options'] = wp_parse_args( $this->args['options'],  array(
						'on_left' => false,
						'skin' => 'light',
						'main_tab' => false,
					));
					$this->args['options']['on_left'] = false;//Los Tabs generales no pueden ir a la izquierda
					if( ! in_array( $this->args['options']['skin'], array( 'light', 'dark' ) ) ){
						$this->args['options']['skin'] = 'light';
					}
				}
				break;

			case 'text':
			case 'date':
			case 'time':
				$this->args['options'] = wp_parse_args( $this->args['options'],  array(
					'helper' => '',
				));
				if( isset( $this->args['options']['icon'] ) && empty( $this->args['options']['helper'] ) ){
					$this->args['options']['helper'] = $this->args['options']['icon'];
				}
				break;

			case 'title':
				$this->args['options']['show_name'] = false;
				break;

			case 'wp_editor':
				$this->args['options'] = wp_parse_args( $this->args['options'],  array(
					'editor_height' => 150,
					'media_buttons' => true
				));
				$this->args['options']['tinymce']['setup'] = 'function(editor){ window.XBOX.on_change_wp_editor(editor); }';
				$this->args['options']['default_editor'] = 'tinymce';
				//Opciones disponibles en:
				//https://codex.wordpress.org/Function_Reference/wp_editor
				break;
		}

		//Validamos el valor por defecto al final porque no es del mismo tipo para cada campo
		if( $field_type == 'group' ){
			$this->args['default'] = array();
		} else if(
			$field_type == 'checkbox' || ( $field_type == 'select' && $this->args['options']['multiple'] ) || ( $this->is_checkbox_image_selector() ) ){
			$this->args['default'] = $this->validate_arg( 'default', 'array' );
		} else {
			$this->args['default'] = $this->validate_arg( 'default', 'string', ',' );
		}

		//Opciones adicionales para grupos y campos repetibles
		if( $field_type == 'group' || $this->args['repeatable'] ) {
			$this->args['options'] = wp_parse_args( $this->args['options'],  array(
				'sortable' => true,
				'add_item_text' => _x( 'Add new', 'New item for repeatable fields', 'xbox' ),
				'remove_item_text' => _x( 'Remove', 'Remove item for repeatable fields', 'xbox' ),
				'add_item_class' => '',//'xbox-custom-add' para agregar como nombre de cada control el texto del botón
				'remove_item_class' => '',
				'duplicate_item_text'  => __( 'Duplicate', 'xbox' ),
				'duplicate_item_class' => '',
				'sort_item_text'  => __( 'Sort', 'xbox' ),
				'sort_item_class' => '',
				'visibility_item_text'  => __( 'Visibility', 'xbox' ),
				'visibility_item_class' => '',
			));
		}

		//Validamos algunos campos de las opciones
		foreach ( $this->args['options'] as $option => $value ){
			if( false !== stripos( $option, 'class') ){//Class debe ser escaparse con esc_attr
				$this->args['options'][$option] = esc_attr( $value );
			}
		}

		//Validamos los atributos
		foreach ( $this->args['attributes'] as $attr => $value ){
			if( $attr != 'disabled' ){//Porque los checkboxs pueden tener un array de valores disabled.
				$this->args['attributes'][$attr] = esc_attr( $value );
			}
		}

		return $this->args;
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Valida un argumento
	|---------------------------------------------------------------------------------------------------
	*/
	public function validate_arg( $arg, $data_type = 'array', $implode = ' ', $escaping_function = 'esc_attr' ){
		$value = $this->get_result_callback( $arg );
		$type = $this->args['type'];
		$options = $this->args['options'];

		if( $data_type == 'array' ){
			if( ! is_array( $value ) ){
				$value = (array) $value;
			}
			if( $arg == 'default' && $value == array('$all$') ){
				if( $type == 'checkbox' || $this->is_checkbox_image_selector() ){
					$value = array_keys( $this->args['items'] );
				}
			}
			return $value;
		}
		else if( $data_type == 'string' ){
			if( is_array( $value ) ){
				$value = implode( $implode, $value );
			}
			if( in_array( $this->args['type'], array('textarea', 'wp_editor', 'code_editor') ) ){
				$value = call_user_func( 'stripslashes', $value );
			} else {
				$value = call_user_func( $escaping_function, $value );
			}
		} else if( $data_type == 'html' ){
			if( is_array( $value ) ){
				$value = implode( $implode, $value );
			}
		}
		return $value;
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Valida los campos que no pueden ser repetibles
	|---------------------------------------------------------------------------------------------------
	*/
	public function validate_repeatable( $field_type = '' ){
		if( empty( $field_type ) ){
			return false;
		}
		$non_repeatable_fields = array(
			'title',
			'tab',
			'tab_item',
			'group',
			'checkbox',
			'radio',
			'image_selector',
			'html',
            'html_content',
            'section',
            'import',
            'export',
            'switcher',
		);
		return $this->args['repeatable'] == true && ! in_array( $field_type, $non_repeatable_fields );
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Valida el valor del campo colorpicker
	|---------------------------------------------------------------------------------------------------
	*/
	public function validate_colorpicker( $color = '' ){
		$format_color = Functions::get_format_color( $color );
		$format = $this->arg( 'options', 'format' );
		if( $format_color ){
			if( $format == 'hex' && ( $format_color == 'rgb' || $format_color == 'rgba' ) ){
				$color = Functions::rgb_to_hex( $color );
			}
			if( ($format == 'rgb' || $format == 'rgba') && ( $format_color == 'hex' ) ){
				$color = Functions::hex_to_rgb( $color, 1 );
			}
		} else {
			$color = '';
		}
		return $color;
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Agrega un campo
	|---------------------------------------------------------------------------------------------------
	*/
	public function add_field( $field_args = array() ){
		return $this->xbox->add_field( $field_args, $this );
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Obtiene un campo
	|---------------------------------------------------------------------------------------------------
	*/
	public function get_field( $field_id = '' ){
		return $this->xbox->get_field( $field_id, $this );
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Agrega un campo de tipo grupo
	|---------------------------------------------------------------------------------------------------
	*/
	public function add_group( $field_args = array() ){
		return $this->xbox->add_group( $field_args, $this );
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Obtiene un campo de tipo grupo
	|---------------------------------------------------------------------------------------------------
	*/
	public function get_group( $field_id = '' ){
		return $this->xbox->get_group( $field_id, $this );
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Agrega un campo de tipo mixto con acción abrir
	|---------------------------------------------------------------------------------------------------
	*/
	public function open_mixed_field( $field_args = array() ){
		return $this->xbox->open_mixed_field( $field_args, $this );
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Agrega un campo de tipo mixto con acción cerrar
	|---------------------------------------------------------------------------------------------------
	*/
	public function close_mixed_field( $field_args = array() ){
		return $this->xbox->close_mixed_field( $field_args, $this );
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Agrega tab
	|---------------------------------------------------------------------------------------------------
	*/
	public function add_tab( $field_args = array() ){
		return $this->xbox->add_tab( $field_args, $this );
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Finaliza un tab
	|---------------------------------------------------------------------------------------------------
	*/
	public function close_tab( $field_id = '' ){
		return $this->xbox->close_tab( $field_id, $this );
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Agrega un campo de tipo tab_item con acción abrir
	|---------------------------------------------------------------------------------------------------
	*/
	public function open_tab_item( $item_name = '' ){
		return $this->xbox->open_tab_item( $item_name, $this );
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Agrega un campo de tipo tab_item con acción cerrar
	|---------------------------------------------------------------------------------------------------
	*/
	public function close_tab_item( $item_name = '' ){
		return $this->xbox->close_tab_item( $item_name, $this );
	}

    /*
    |---------------------------------------------------------------------------------------------------
    | Agrega html
    |---------------------------------------------------------------------------------------------------
    */
    public function add_html( $field_args = array() ){
        return $this->xbox->add_html( $field_args, $this );
    }

	/*
	|---------------------------------------------------------------------------------------------------
	| Comprueba si existe el argumento width por defecto
	|---------------------------------------------------------------------------------------------------
	*/
	public function is_valid_grid_value( $grid ){
		return strpos( $grid, 'last' ) !== false || strpos( $grid, 'new-row' ) !== false || in_array( $grid, array( '1-of-6', '2-of-6', '3-of-6', '4-of-6', '5-of-6', '6-of-6', '1-of-8', '2-of-8', '3-of-8', '4-of-8', '5-of-8', '6-of-8', '7-of-8', '8-of-8') );
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Comprueba si existe el argumento width por defecto
	|---------------------------------------------------------------------------------------------------
	*/
	public function is_checkbox_image_selector(){
		return $this->arg( 'type' ) == 'image_selector' && $this->arg( 'options', 'like_checkbox') === true;
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Obtiene el nivel del campo
	|---------------------------------------------------------------------------------------------------
	*/
	public function get_row_level( $real_level = false ){
		$parents = $this->get_parents();
		$level = count( $parents ) + 1;
		if( $real_level ){
			return $level;
		}
		foreach ( $parents as $parent ){
			if( $parent['type'] != 'group' ){
				$level--;
			}
		}
		return $level;
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Agrega el id del campo padre
	|---------------------------------------------------------------------------------------------------
	*/
	private function add_parent( $parent_object ){
		$parents = $parent_object->get_parents();
		$parent_type = $parent_object->arg( 'type' );
		$levels = count( $parents ) + 1;
		$parents["level-{$levels}"] = array(
			'id' => $parent_object->id(),
			'type' => $parent_type
		);
		$this->parents = $parents;
		$this->parent_type = $parent_type;
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Obtiene el campo padre de un campo. Se le puede pasar el nivel de campo a obtener
	|---------------------------------------------------------------------------------------------------
	*/
	public function get_parent( $parent_id = '', $level_number = false ){
		$parent = null;
		$parents = $this->get_parents();
		$row_level = $this->get_row_level( true );

		if( $row_level == 1 ){
			return $this->xbox;
		}

		$parent = $this->xbox;
		foreach( $parents as $level => $level_value ){
			$parent = $parent->get_field( $level_value['id'] );
			if ( is_numeric( $level_number ) ){
				if( $level == 'level-'.$level_number ){
					return $parent;
				}
			}
			if( $level_number == true && $parent->get_id() == $parent_id ){
				return $parent;
			}
		}
		if( $parent_id != '' && $parent->get_id() != $parent_id ){
			return null;
		}
		return $parent;
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Comprueba si el campo ya ha sido guardado previamente en wordpress
	|---------------------------------------------------------------------------------------------------
	*/
	public function is_saved_field(){
		$saved = false;
		$row_level = $this->get_row_level();

		if( $row_level == 1 ){
			switch( $this->xbox->get_object_type() ){
				case 'metabox':
					$saved = metadata_exists( 'post', $this->xbox->get_object_id(), $this->id );
					break;

				case 'admin-page':
					$options = get_option( $this->xbox->id );
					if( isset( $options[ $this->id ] ) ){
						$saved = true;
					}
					break;
			}
		} else {
			$group = $this->get_parent();
			$value = $group->get_group_value();
			if( isset( $value[ $group->index ][ $this->id ] ) ){
				$saved = true;
			}
		}
		return $saved;
	}


	/*
	|---------------------------------------------------------------------------------------------------
	| Obtiene el valor de un campo de primer nivel. Para los campos dentro de grupos usar get_value()
	|---------------------------------------------------------------------------------------------------
	*/
	public function get_saved_value(){
		$row_level = $this->get_row_level();
		$value = null;

		if( $row_level > 1 ){
			return null;
		}

		switch( $this->xbox->get_object_type() ){
			case 'metabox':
				$value = $this->xbox->get_field_value( $this->id, $this->xbox->get_object_id(), '' );
				break;

			case 'admin-page':
				$value = $this->xbox->get_field_value( $this->id, '' );
				break;
		}
		return $value;
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Obtiene el valor de un campo
	|---------------------------------------------------------------------------------------------------
	*/
	public function get_value( $default = true, $escaping_function = 'esc_attr', $index = null, $all = false ){
		if( $this->arg( 'type' ) == 'group' ){
			return '';//para grupos usar get_group_value()
		}
		$value = '';
		$row_level = $this->get_row_level();

		//Para los campos de primer nivel
		if( $row_level == 1 ){
			if( Functions::is_empty( $this->value ) ){
				$this->value = $this->get_saved_value();
			}
			$value = $this->value;
		}
		//Para los campos dentro de grupos
		else {
			/*
			SOPORTE PARA SECCIONES DENTRO DE GRUPOS
			$group = $this->get_parent();
			//Si el padre del campo es una sección, entonces el padre de la seccion sería el grupo
			if( $group->arg( 'type' ) == 'section' ){
				$group = $group->get_parent();
			}
			$value = $group->get_group_value();
			*/
			$group = $this->get_parent();
			$value = $group->get_group_value();

			if( isset( $value[ $group->index ][ $this->id ] ) ){
				$value = $value[ $group->index ][ $this->id ];
			} else {
				$value = '';
			}
		}

		if( Functions::is_empty( $value ) && $default && ! $this->is_saved_field() ){
			$value = $this->arg( 'default' );
		}

		if( $escaping_function ){
			$value = $this->escape_value( $value, $escaping_function );
		}

		$value = $this->validate_value( $value, $index, $all );

		return $value;
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Obtiene el valor de un grupo de cualquier nivel
	|---------------------------------------------------------------------------------------------------
	*/
	public function get_group_value(){
		if( $this->arg( 'type' ) != 'group' ){
			return '';
		}

		$parents = $this->get_parents();
		$row_level = $this->get_row_level();

		//Para los grupos de primer nivel
		if( $row_level == 1 ){
			if( Functions::is_empty( $this->value ) ){
				$this->value = $this->get_saved_value();
			}
			return $this->value;
		}

		//Para los grupos de nivel 2 primero tenemos que obtener el valor de grupo de nivel 1

		$group = $this->xbox->get_field( $parents['level-1']['id'] );
		//Si el campo de nivel 1 es es una sección, entonces el grupo de primer nivel está dentro de esa sección
		if( $group->arg( 'type' ) == 'section' ){
			$group = $group->get_field( $parents['level-2']['id'] );
		}
		$value = $group->get_saved_value();

		if( is_array( $value ) && ! Functions::is_empty( $value ) ){
			switch( $row_level ){
				case 2: //Para los grupos dentro de grupos
					if( isset( $value[ $group->index ][ $this->id ] ) ){
						$value = $value[ $group->index ][ $this->id ];
					} else {
						$value = array();
					}
					break;

				case 3: //Para los grupos de tercer nivel
					//Nada por ahora
					$value = array();
					break;
			}
		}
		return $value;
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Obtiene el atributo name de un campo
	|---------------------------------------------------------------------------------------------------
	*/
	public function get_name( $index = null ){
		$field_name = $this->id;
		$parents = $this->get_parents();
		$row_level = $this->get_row_level();

		//Para los campos de primer nivel
		if( $row_level == 1 ){
			$field_name = $this->id;
		}
		//Para los campos dentro de grupos
		else {
			//Primero tenemos que posicionarnos en el grupo de nivel 1
			$group_1 = $this->xbox->get_field( $parents['level-1']['id'] );
			//Si el campo de nivel 1 es es una sección, entonces el grupo de primer nivel está dentro de esa sección
			if( $group_1->arg( 'type' ) == 'section' ){
				$group_1 = $group_1->get_field( $parents['level-2']['id'] );
			}

			switch ( $row_level ){
				case 2: //Para los campos dentro de grupos de primer nivel
					$field_name = "{$group_1->id}[$group_1->index][$this->id]";
					break;

				case 3: //Para los campos dentro de grupos de segundo nivel
					$group_2 = $group_1->get_group( $parents['level-2']['id'] );
					if( ! $group_2 ){
						$group_2 = $group_1->get_group( $parents['level-3']['id'] );
					}
					$field_name = "{$group_1->id}[$group_1->index][$group_2->id][$group_2->index][$this->id]";
					break;

				case 4: //Para los campos dentro de grupos de tercer nivel
					//Nada por ahora
					break;
			}
		}
		if( $this->arg( 'repeatable' ) ){
			$index = $index == null ? $this->index : $index;
			$field_name = "{$field_name}[$index]";
		}
		if( $this->arg( 'type' ) == 'checkbox' || $this->arg( 'options', 'multiple' ) == true || $this->is_checkbox_image_selector() ){
			$field_name = "{$field_name}[]";
		}
		return $field_name;
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Obtiene el valor de un campo por su atributo name. Función no utilizada pero sí funciona
	|---------------------------------------------------------------------------------------------------
	*/
	public function get_value_by_name( $name_attr = '' ){
		$value = '';
		$parents = $this->get_parents();
		$row_level = $this->get_row_level();

		if( $row_level == 1 ){
			return $this->get_saved_value();
		}

		//Para los campos dentro de grupos
		$field_name = ! empty( $name_attr ) ? $name_attr : $this->get_name();

		$group = $this->xbox->get_field( $parents['level-1']['id'] );
		if( $group->arg( 'type' ) == 'section' ){
			$group = $group->get_field( $parents['level-2']['id'] );
		}
		$value = $group->get_saved_value();
		$value = Functions::get_array_value_by_path( $field_name, $value );
		return $value;
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Valida el valor de un campo ya que puede ser repetible o no
	|---------------------------------------------------------------------------------------------------
	*/
	public function validate_value( $value = '', $index = null, $all = false ){
		$type = $this->arg( 'type' );
		$repeatable = $this->arg( 'repeatable' );
		$multiple = $this->arg( 'options', 'multiple' );
		$index = $index == null ? $this->index : $index;

		if( $repeatable || $type == 'checkbox' || $multiple == true || $this->is_checkbox_image_selector() ){
			if( ! Functions::is_empty( $value )  ){
				if( ! is_array( $value ) ){
					$value = str_split( $value, strlen( $value ) );
				}
				$value = Functions::array_filter( $value );
			}
			if( ! $all ){
				if( $repeatable ){
					$value = isset( $value[$index] ) ? $value[$index] : '';
				}
			}
		} else {
			if( is_array( $value ) ){
				$value = Functions::array_filter( $value );
				$value = isset( $value[0] ) ? $value[0] : '';
			}
		}
		return $value;
	}


	/*
	|---------------------------------------------------------------------------------------------------
	| Escapar atributos HTML del valor de un campo
	|---------------------------------------------------------------------------------------------------
	*/
	private function escape_value( $value = '', $escaping_function = 'esc_attr' ){
		if( Functions::is_empty( $value ) ){
			return '';
		}
		$escape = $this->xbox->exists_callback( 'escape_callback', $this );

		//No escapar valor
		if( $escape === false ){
			return $value;
		}
		//Escapar valor con una función del usuario
		elseif ( $escape ){
			return call_user_func( 'escape_callback', $value, $this->args, $this );
		}
		//Escapar valor con la función por defecto de wordpress
		if( ! is_array( $value ) ){
			$value = call_user_func( $escaping_function, $value );
		}
		else {
			foreach ( $value as $i => $val ) {
				$value[ $i ] = call_user_func( $escaping_function, $val );
			}
		}
		return $value;
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Guarda un campo
	|---------------------------------------------------------------------------------------------------
	*/
	public function save( $value = '' ){
		$old_value = $this->get_saved_value();
		$new_value = $this->sanitize_value( $value );
		$return = array(
			'updated' => false,
			'value' => $new_value,
		);

		//No hacer nada si el nuevo valor es igual al guardado en la base datos
		if( $new_value == $old_value ){
			return $return;
		}

		switch( $this->xbox->get_object_type() ){
			case 'metabox':
				$return['updated'] = $this->xbox->set_field_value( $this->id, $new_value, $this->xbox->get_object_id() );
				break;

			case 'admin-page':
				$return['updated'] = $this->xbox->set_field_value( $this->id, $new_value );
				break;
		}
		return $return;
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Desinfecta el valor de un campo
	|---------------------------------------------------------------------------------------------------
	*/
	public function sanitize_value( $value = '' ){
		if( $this->arg( 'type' ) == 'group' ){
			return (array) $value;
		}
		if ( is_array( $value ) && $this->arg( 'repeatable' ) ) {
			return $this->sanitize_repeatable( $value );
		}

		$sanitize = $this->xbox->exists_callback( 'sanitize_callback', $this );

		//No desinfectar
		if( $sanitize === false ){
			return $value;
		}
		//Desinfección por el usuario
		else if ( $sanitize ){
			return call_user_func( $this->args[ 'sanitize_callback' ], $value, $this->args, $this );
		}

		$sanitizer = new Sanitizer( $this, $value );

		//Desinfección por defecto
		$sanitized_value = $sanitizer->{$this->args['type']}();

		//Filtro para desinfección por el usuario según tipo de campo
		$filter_tag = "xbox_sanitize_{$this->arg( 'type' )}";
		if( has_filter( $filter_tag ) ){
			$filter_value = apply_filters( $filter_tag, $sanitizer->value, $this->xbox->get_object_id(), $this->args, $sanitizer );
			if( $filter_value === false ){
				return $value;
			}
			return $filter_value;
		}

		return $sanitized_value;
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Desinfecta un campo de tipo grupo
	|---------------------------------------------------------------------------------------------------
	*/
	public function sanitize_group( $value = array(), $on_save = false ){
		if( Functions::is_empty( $value ) ){
			return (array) $value;
		}
		if( $on_save && isset( $value['1000'] ) ){
			unset( $value['1000'] );
		}
		foreach ( (array) $value as $index => $array_values ){
			if( ! Functions::is_empty( $array_values ) ){
				foreach ( (array) $array_values as $field_id => $val ){
					$field = $this->get_field( $field_id );
					if( $field ){
						if( $field->arg( 'type' ) == 'group' ){
							$value[ $index ][ $field_id ] = $field->sanitize_group( $val, $on_save );
						} else {
							$value[ $index ][ $field_id ] = $field->sanitize_value( $val );
						}
					}
				}
			}
		}
		return $value;
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Desinfecta un campo repetible
	|---------------------------------------------------------------------------------------------------
	*/
	public function sanitize_repeatable( $value = '' ){
		if( ! is_array( $value ) || ! $this->arg( 'repeatable' ) ){
			return $value;
		}
		$value = array_filter( $value );
		$value = array_values( $value );//Remove empty keys
		foreach( $value as $index => $val ){
			$value[ $index ] = $this->sanitize_value( $val, $index );
		}
		return $value;
	}

	/*
	|---------------------------------------------------------------------------------------------------
	| Obtiene el contenido de una función callback
	|---------------------------------------------------------------------------------------------------
	*/
	public function get_result_callback( $callback = '' ){
		$exclude = array( 'disabled', 'Disabled', 'checked', 'Checked', 'header', 'Header' );
		if( isset( $this->args[ $callback ] ) && ! in_array( $this->args[ $callback ], $exclude ) && $this->xbox->exists_callback( $callback, $this )  ){
			return call_user_func( $this->args[ $callback ], $this->args, $this );
		}
		return isset( $this->args[ $callback ] ) ? $this->args[ $callback ] : '';
	}

}