class-cfafa-form-action-email.php

<?php
/**
 * "Conditional Email" ACFE Form Action Class.
 *
 * Handles the "Conditional Email" ACFE Form Action.
 *
 * @package Conditional_Form_Actions_For_ACFE
 */

// Exit if accessed directly.
defined( 'ABSPATH' ) || exit;

/**
 * "Conditional Email" ACFE Form Action Class.
 *
 * A class that handles the "Conditional Email" ACFE Form Action.
 *
 * @since 0.2.0
 */
class CFAFA_ACFE_Form_Action_Email extends CFAFA_ACFE_Form_Action_Base {

	/**
	 * Plugin object.
	 *
	 * @since 0.2.0
	 * @access public
	 * @var Conditional_Form_Actions_For_ACFE
	 */
	public $plugin;

	/**
	 * ACF Extended object.
	 *
	 * @since 0.2.0
	 * @access public
	 * @var CFAFA_ACFE
	 */
	public $acfe;

	/**
	 * Form Action Name.
	 *
	 * @since 0.2.0
	 * @access public
	 * @var string
	 */
	public $name = 'email_cfafa';

	/**
	 * Form Action Name.
	 *
	 * @since 0.2.0
	 * @access public
	 * @var string
	 */
	public $action_name = 'email_cfafa';

	/**
	 * Field Key Prefix.
	 *
	 * @since 0.2.0
	 * @access public
	 * @var string
	 */
	public $field_key = 'field_cfafa_email_';

	/**
	 * Field Name Prefix.
	 *
	 * @since 0.2.0
	 * @access public
	 * @var string
	 */
	public $field_name = 'cfafa_email_';

	/**
	 * Array of translatable mapped Email Fields.
	 *
	 * @since 0.2.0
	 * @access public
	 * @var array
	 */
	public $mapped_email_fields = [];

	/**
	 * Constructor.
	 *
	 * @since 0.2.0
	 */
	public function __construct() {

		// Store references to objects.
		$this->plugin = cfafa();
		$this->acfe   = $this->plugin->acfe;

		// Label this Form Action.
		$this->title = __( 'Conditional Email action', 'conditional-form-actions-for-acfe' );

		// Alias Placeholder for this Form Action.
		$this->alias_placeholder = __( 'Conditional Email', 'conditional-form-actions-for-acfe' );

		// Conditional Code for this Form Action.
		$this->conditional_code = 'email_conditional';

		// Declare the mapped Email Fields with translatable titles.
		$this->mapped_email_fields = [
			'from_name'      => __( 'From Name', 'conditional-form-actions-for-acfe' ),
			'from_email'     => __( 'From Email', 'conditional-form-actions-for-acfe' ),
			'reply_to_name'  => __( 'Reply To Name', 'conditional-form-actions-for-acfe' ),
			'reply_to_email' => __( 'Reply To Email', 'conditional-form-actions-for-acfe' ),
			'to_name'        => __( 'To Name', 'conditional-form-actions-for-acfe' ),
			'to_email'       => __( 'To Email', 'conditional-form-actions-for-acfe' ),
			'cc'             => __( 'Cc', 'conditional-form-actions-for-acfe' ),
			'bcc'            => __( 'Bcc', 'conditional-form-actions-for-acfe' ),
			'subject'        => __( 'Subject', 'conditional-form-actions-for-acfe' ),
		];

		// Declare core Fields for this Form Action.
		$this->item = [
			'action' => $this->name,
			'name'   => '',
			'html'   => false,
		];

		// Declare mapped Fields for this Form Action.
		$keys = array_keys( $this->mapped_email_fields );
		foreach ( $keys as $key ) {
			$this->item[ $this->field_name . 'map_' . $key ] = '';
		}

		// Declare static Fields for this Form Action.
		$this->item[ $this->field_name . 'content' ]      = '';
		$this->item[ $this->field_name . 'files' ]        = [];
		$this->item[ $this->field_name . 'files_static' ] = [];

		// Declare Conditional Field for this Form Action.
		$this->item[ $this->field_name . 'map_' . $this->conditional_code ] = '';

		// Init parent.
		parent::__construct();

	}

	/**
	 * Prepares data for saving when the Form Action is saved.
	 *
	 * @since 0.2.0
	 *
	 * @param array $action The array of Form Action data.
	 * @return array $save The array of data to save.
	 */
	public function prepare_save_action( $action ) {

		// Init with default array for this Field.
		$save = $this->item;

		// Always add action name.
		$save['name'] = $action['name'];

		// Always save Conditional Field.
		$item = $this->field_name . 'map_' . $this->conditional_code;
		if ( acf_maybe_get( $action, $item ) ) {
			$save[ $item ] = $action[ $item ];
		}

		// Email data.
		$keys = array_keys( $this->mapped_email_fields );
		foreach ( $keys as $key ) {
			$item = $this->field_name . 'map_' . $key;
			if ( acf_maybe_get( $action, $item ) ) {
				$save[ $item ] = $action[ $item ];
			}
		}

		// Get Content Type from Content Group.
		$group = $action[ $this->field_name . 'content_group' ];
		if ( 'editor' === $group[ $this->field_name . 'content_type' ] ) {
			$save[ $this->field_name . 'content' ] = $group[ $this->field_name . 'content_editor' ];
		} elseif ( 'html' === $group[ $this->field_name . 'content_type' ] ) {
			$save[ $this->field_name . 'content' ] = $group[ $this->field_name . 'content_html' ];
			$save['html']                          = true;
		}

		// Dynamic Files.
		$item            = $this->field_name . 'files';
		$action[ $item ] = acf_get_array( $action[ $item ] );
		foreach ( $action[ $item ] as $row ) {
			$save[ $item ][] = $row;
		}

		// Static Files.
		$item            = $this->field_name . 'files_static';
		$action[ $item ] = acf_get_array( $action[ $item ] );
		foreach ( $action[ $item ] as $row ) {
			$save[ $item ][] = $row[ $this->field_name . 'file_static' ];
		}

		// --<
		return $save;

	}

	/**
	 * Prepares data when the Form Action is loaded.
	 *
	 * @since 0.2.0
	 *
	 * @param array $action The array of Form Action data.
	 * @return array $action The array of data to save.
	 */
	public function prepare_load_action( $action ) {

		// Populate Content Editor.
		$value = $action[ $this->field_name . 'content' ];
		$group = $this->field_name . 'content_group';
		if ( true === $action['html'] ) {
			$action[ $group ][ $this->field_name . 'content_type' ] = 'html';
			$action[ $group ][ $this->field_name . 'content_html' ] = $value;
		} else {
			$action[ $group ][ $this->field_name . 'content_type' ]   = 'editor';
			$action[ $group ][ $this->field_name . 'content_editor' ] = $value;
		}

		// Populate Dynamic Files.
		$item            = $this->field_name . 'files';
		$files           = $action[ $item ];
		$action[ $item ] = [];
		foreach ( $files as $row ) {
			$action[ $item ][] = [
				$this->field_name . 'file'        => $row[ $this->field_name . 'file' ],
				$this->field_name . 'file_delete' => $row[ $this->field_name . 'file_delete' ],
			];
		}

		// Populate Static Files.
		$item            = $this->field_name . 'files_static';
		$files           = $action[ $item ];
		$action[ $item ] = [];
		foreach ( $files as $row ) {
			$action[ $item ][] = [ $this->field_name . 'file_static' => $row ];
		}

		// --<
		return $action;

	}

	/**
	 * Performs validation when the Form the Action is attached to is submitted.
	 *
	 * @since 0.2.0
	 *
	 * @param array $form The array of Form data.
	 * @param array $action The array of Action data.
	 */
	public function validation( $form, $action ) {

		/*
		// Get some Form details.
		$form_name = acf_maybe_get( $form, 'name' );
		$form_id = acf_maybe_get( $form, 'ID' );
		//acfe_add_validation_error( $selector, $message );
		*/

	}

	/**
	 * Performs the action when the Form the Action is attached to is submitted.
	 *
	 * @since 0.2.0
	 *
	 * @param array $form The array of Form data.
	 * @param array $action The array of Action data.
	 */
	public function make_action( $form, $action ) {

		// Bail if a filter has overridden the action.
		if ( false === $this->make_skip( $form, $action ) ) {
			return;
		}

		// Populate Conditional Reference and value.
		$action = $this->form_conditional_populate( $action );

		// Populate Email data array.
		$email = $this->form_email_data( $form, $action );

		// Populate Attachments data array.
		$attachments = $this->form_attachments_data( $form, $action );

		// Check Conditional.
		if ( $this->form_conditional_check( $action ) ) {

			// Build the arguments.
			$args = $this->form_build_args( $email, $attachments, $form, $action );

			// Skip when the args have been overridden.
			if ( ! empty( $args ) ) {

				// Send the Email with the built arguments.
				$email = $this->form_email_send( $args, $email );

			}

		}

		// Maybe remove Dynamic Attachments.
		$this->form_attachments_delete( $attachments );

		// Save the results of this Action for later use.
		$this->make_action_save( $action, $email );

	}

	/**
	 * Defines additional Fields for the "Action" Tab.
	 *
	 * @since 0.2.0
	 *
	 * @return array $fields The array of Fields for this section.
	 */
	public function tab_action_append() {

		// Init Fields.
		$fields = [];

		// Add Conditional Field.
		$label                      = __( 'Conditional On', 'conditional-form-actions-for-acfe' );
		$conditional                = $this->mapping_field_get( $this->conditional_code, $label );
		$conditional['placeholder'] = __( 'Always send', 'conditional-form-actions-for-acfe' );
		$conditional['wrapper']['data-instruction-placement'] = 'field';
		$conditional['instructions']                          = __( 'To send the Email only when a Form Field is populated (e.g. "First Name") link this to the Form Field. To send the Email only when more complex conditions are met, link this to a Hidden Field with value "1" where the conditional logic of that Field shows it when the conditions are met.', 'conditional-form-actions-for-acfe' );
		$fields[] = $conditional;

		// --<
		return $fields;

	}

	/**
	 * Defines the "Mapping" Tab.
	 *
	 * @since 0.2.0
	 *
	 * @return array $fields The array of Fields for this section.
	 */
	public function tab_mapping_add() {

		// Get Tab Header.
		$label              = __( 'Email', 'conditional-form-actions-for-acfe' );
		$mapping_tab_header = $this->tab_mapping_header( $label );

		// Build Email Details Accordion.
		$mapping_email_accordion = $this->tab_mapping_accordion_email_add();

		// Combine Sub-Fields.
		$fields = array_merge(
			$mapping_tab_header,
			$mapping_email_accordion
		);

		// --<
		return $fields;

	}

	/**
	 * Defines the Fields in the "Email Fields" Accordion.
	 *
	 * @since 0.2.0
	 *
	 * @return array $fields The array of Fields for this section.
	 */
	public function tab_mapping_accordion_email_add() {

		// Init return.
		$fields = [];

		// Add "Mapping" Fields.
		foreach ( $this->mapped_email_fields as $name => $title ) {
			$fields[] = $this->mapping_field_get( $name, $title );
		}

		// Define Content Group.
		$content_group = [
			'key'                 => $this->field_key . 'content_group',
			'label'               => __( 'Content', 'conditional-form-actions-for-acfe' ),
			'name'                => $this->field_name . 'content_group',
			'type'                => 'group',
			'instructions'        => sprintf(
				/* translators: 1: An opening <code> tag, 2: A closing <code> tag, 3: A line break tag,  */
				__( 'Render customized email content.%3$s%3$sRender all fields values:%3$s%1$s{fields}%2$s%3$s%3$sRender field value:%3$s%1$s{field:field_abc123}%2$s%3$s%1$s{field:my_field}%2$s', 'conditional-form-actions-for-acfe' ),
				'<code>',
				'</code>',
				'<br />'
			),
			'required'            => 0,
			'conditional_logic'   => 0,
			'wrapper'             => [
				'width' => '',
				'class' => '',
				'id'    => '',
			],
			'layout'              => 'block',
			'acfe_seamless_style' => true,
			'acfe_group_modal'    => 0,
			'sub_fields'          => [],
		];

		// Define Content Type Field.
		$content_group['sub_fields'][] = [
			'key'               => $this->field_key . 'content_type',
			'label'             => '',
			'name'              => $this->field_name . 'content_type',
			'type'              => 'select',
			'instructions'      => '',
			'required'          => 0,
			'conditional_logic' => 0,
			'wrapper'           => [
				'width' => '',
				'class' => '',
				'id'    => '',
			],
			'choices'           => [
				'editor' => __( 'Content Editor', 'conditional-form-actions-for-acfe' ),
				'html'   => __( 'Raw HTML', 'conditional-form-actions-for-acfe' ),
			],
			'default_value'     => [ 'custom' ],
			'allow_null'        => 0,
			'multiple'          => 0,
			'ui'                => 0,
			'return_format'     => 'value',
			'placeholder'       => __( 'Default', 'conditional-form-actions-for-acfe' ),
			'ajax'              => 0,
			'allow_custom'      => 0,
		];

		// Define Content Editor Field.
		$content_group['sub_fields'][] = [
			'key'               => $this->field_key . 'content_editor',
			'label'             => '',
			'name'              => $this->field_name . 'content_editor',
			'type'              => 'wysiwyg',
			'instructions'      => '',
			'required'          => 0,
			'conditional_logic' => [
				[
					[
						'field'    => $this->field_key . 'content_type',
						'operator' => '==',
						'value'    => 'editor',
					],
				],
			],
			'wrapper'           => [
				'width' => '',
				'class' => '',
				'id'    => '',
			],
			'default_value'     => '',
			'tabs'              => 'all',
			'toolbar'           => 'full',
			'media_upload'      => 1,
			'delay'             => 0,
		];

		// Define Content HTML Field.
		$content_group['sub_fields'][] = [
			'key'               => $this->field_key . 'content_html',
			'label'             => '',
			'name'              => $this->field_name . 'content_html',
			'type'              => 'acfe_code_editor',
			'instructions'      => '',
			'required'          => 0,
			'conditional_logic' => [
				[
					[
						'field'    => $this->field_key . 'content_type',
						'operator' => '==',
						'value'    => 'html',
					],
				],
			],
			'wrapper'           => [
				'width' => '',
				'class' => '',
				'id'    => '',
			],
			'default_value'     => '',
			'rows'              => 18,
		];

		// Finally, add Content Group.
		$fields[] = $content_group;

		// --<
		return $fields;

	}

	/**
	 * Defines the "Attachments" Tab.
	 *
	 * @since 0.2.0
	 *
	 * @return array $fields The array of Fields for this section.
	 */
	public function tab_attachments_add() {

		// Init tab array.
		$attachments_tab = [];

		// Add "Dynamic Files" Repeater.
		$attachments_tab[] = [
			'key'               => $this->field_key . 'files',
			'label'             => __( 'Dynamic Files', 'conditional-form-actions-for-acfe' ),
			'name'              => $this->field_name . 'files',
			'type'              => 'repeater',
			'instructions'      => '',
			'required'          => 0,
			'conditional_logic' => 0,
			'wrapper'           => [
				'width' => '',
				'class' => '',
				'id'    => '',
			],
			'collapsed'         => '',
			'min'               => 0,
			'max'               => 0,
			'layout'            => 'table',
			'button_label'      => __( 'Add File', 'conditional-form-actions-for-acfe' ),
			'sub_fields'        => [
				[
					'key'                => $this->field_key . 'file',
					'label'              => __( 'File', 'conditional-form-actions-for-acfe' ),
					'name'               => $this->field_name . 'file',
					'type'               => 'select',
					'instructions'       => '',
					'required'           => 0,
					'wrapper'            => [
						'width' => '',
						'class' => '',
						'id'    => '',
					],
					'choices'            => [],
					'default_value'      => [],
					'allow_null'         => 1,
					'multiple'           => 0,
					'ui'                 => 1,
					'return_format'      => 'value',
					'placeholder'        => '',
					'ajax'               => 1,
					'search_placeholder' => __( 'Select a field or enter a custom value or template tag.', 'conditional-form-actions-for-acfe' ),
					'allow_custom'       => 1,
					'conditional_logic'  => 0,
					'ajax_action'        => 'acfe/form/map_field_ajax',
				],
				[
					'key'              => $this->field_key . 'file_delete',
					'label'            => __( 'Delete File', 'conditional-form-actions-for-acfe' ),
					'name'             => $this->field_name . 'file_delete',
					'type'             => 'true_false',
					'instructions'     => '',
					'required'         => 0,
					'wrapper'          => [
						'width' => '',
						'class' => '',
						'id'    => '',
					],
					'acfe_permissions' => '',
					'message'          => __( 'Delete once submitted', 'conditional-form-actions-for-acfe' ),
					'default_value'    => 0,
					'ui'               => 1,
					'ui_on_text'       => '',
					'ui_off_text'      => '',
				],
			],
		];

		// Add "Static Files" Repeater.
		$attachments_tab[] = [
			'key'               => $this->field_key . 'files_static',
			'label'             => __( 'Static Files', 'conditional-form-actions-for-acfe' ),
			'name'              => $this->field_name . 'files_static',
			'type'              => 'repeater',
			'instructions'      => '',
			'required'          => 0,
			'conditional_logic' => 0,
			'wrapper'           => [
				'width' => '',
				'class' => '',
				'id'    => '',
			],
			'collapsed'         => '',
			'min'               => 0,
			'max'               => 0,
			'layout'            => 'table',
			'button_label'      => __( 'Add File', 'conditional-form-actions-for-acfe' ),
			'sub_fields'        => [
				[
					'key'               => $this->field_key . 'file_static',
					'label'             => __( 'File', 'conditional-form-actions-for-acfe' ),
					'name'              => $this->field_name . 'file_static',
					'type'              => 'file',
					'instructions'      => '',
					'required'          => 0,
					'conditional_logic' => 0,
					'wrapper'           => [
						'width' => '',
						'class' => '',
						'id'    => '',
					],
					'acfe_permissions'  => '',
					'return_format'     => 'id',
				],
			],
		];

		// Get Tab Header.
		$attachments_tab_header = $this->tab_attachments_header();

		// Combine Sub-Fields.
		$fields = array_merge(
			$attachments_tab_header,
			$attachments_tab
		);

		// --<
		return $fields;

	}

	/**
	 * Builds Email data array from mapped Fields.
	 *
	 * @since 0.2.0
	 *
	 * @param array $form The array of Form data.
	 * @param array $action The array of Action data.
	 * @return array $data The array of results of this Action to save for later use.
	 */
	public function form_email_data( $form, $action ) {

		// Init data array.
		$data = [];

		// Set ACFE "context". We want to apply tags.
		acfe_add_context( [ 'context' => 'display' ] );

		// Mapped Email data.
		$keys = array_keys( $this->mapped_email_fields );
		foreach ( $keys as $key ) {
			$index = $this->field_name . 'map_' . $key;
			acfe_apply_tags( $action[ $index ] );
			$data[ $key ] = $action[ $index ];
		}

		// Apply tags to Email content.
		acfe_apply_tags( $action[ $this->field_name . 'content' ], [ 'unformat' => 'wysiwyg' ] );

		// Reset the ACFE "context".
		acfe_delete_context( [ 'context' ] );

		// Format the Email content.
		if ( true === $action['html'] ) {
			// Apply Shortcodes to HTML content.
			$action[ $this->field_name . 'content' ] = do_shortcode( $action[ $this->field_name . 'content' ] );
		} else {
			// Apply "the_content" filters to Rich Text Editor content.
			$action[ $this->field_name . 'content' ] = apply_filters( 'acf_the_content', $action[ $this->field_name . 'content' ] );
		}

		// Now add Email content to data.
		$data['content'] = $action[ $this->field_name . 'content' ];

		// Also save conditional.
		$data['conditional'] = $action['conditional'];

		// --<
		return $data;

	}

	/**
	 * Builds Attachment data array from mapped Fields.
	 *
	 * @since 0.2.0
	 *
	 * @param array $form The array of Form data.
	 * @param array $action The array of Action data.
	 * @return array $data The array of Attachment data to save for later use.
	 */
	public function form_attachments_data( $form, $action ) {

		// Init return array.
		$data = [
			'attachments' => [],
			'delete'      => [],
		];

		// Process Dynamic Attachments.
		foreach ( $action[ $this->field_name . 'files' ] as $row ) {

			// Parse tags but get the data unformatted and raw.
			$context = [
				'context' => 'save',
				'format'  => false,
				'return'  => 'raw',
			];

			// Find the ID of the File.
			$file_field_key = $row[ $this->field_name . 'file' ];
			$file_id        = acfe_parse_tags( $file_field_key, $context );

			// Add to Attachments array.
			$data['attachments'][] = get_attached_file( $file_id );

			// Maybe add to delete array.
			$file_delete = $row[ $this->field_name . 'file_delete' ];
			if ( $file_delete ) {
				$data['delete'][] = $file_id;
			}

		}

		// Process Static Attachments.
		foreach ( $action[ $this->field_name . 'files_static' ] as $file ) {
			$data['attachments'][] = get_attached_file( $file );
		}

		// --<
		return $data;

	}

	/**
	 * Builds the arguments array.
	 *
	 * @since 0.2.0
	 *
	 * @param array $email The array of Email data.
	 * @param array $attachments The array of Attachments data.
	 * @param array $form The array of Form data.
	 * @param array $action The array of Action data.
	 * @return array|bool $args The arguments array, or false on failure.
	 */
	public function form_build_args( $email, $attachments, $form, $action ) {

		// Build "From" and "Reply To" params.
		$from     = $this->form_email_item_build( $email['from_name'], $email['from_email'] );
		$reply_to = $this->form_email_item_build( $email['reply_to_name'], $email['reply_to_email'] );

		// Maybe use "From" when "Reply To" is empty.
		if ( empty( $reply_to ) ) {
			$reply_to = $from;
		}

		// Build "To" param.
		$to = $this->form_email_item_build( $email['to_name'], $email['to_email'] );

		// Sanity checks.
		if ( empty( $from ) || empty( $to ) ) {
			return false;
		}

		// Build Email headers.
		$headers[] = 'From: ' . $from;
		if ( ! empty( $reply_to ) ) {
			$headers[] = 'Reply-To: ' . $reply_to;
		}
		if ( ! empty( $email['cc'] ) ) {
			$headers[] = 'Cc: ' . $email['cc'];
		}
		if ( ! empty( $email['bcc'] ) ) {
			$headers[] = 'Bcc: ' . $email['bcc'];
		}

		$headers[] = 'Content-Type: text/html';
		$headers[] = 'charset=UTF-8';

		// Finally, build args array.
		$args = [
			'from'        => $from,
			'to'          => $to,
			'reply_to'    => $reply_to,
			'cc'          => $email['cc'],
			'bcc'         => $email['bcc'],
			'subject'     => $email['subject'],
			'content'     => $email['content'],
			'headers'     => $headers,
			'attachments' => $attachments['attachments'],
		];

		// Get the Form name.
		$form_name = acf_maybe_get( $form, 'name' );

		/**
		 * Allow others to filter the Email arguments.
		 *
		 * Returning false for any of these filters will skip sending the Email.
		 *
		 * @since 0.2.0
		 *
		 * @param bool  $args The array of arguments.
		 * @param array $form The array of Form data.
		 * @param array $action The array of Action data.
		 */
		$filter = 'acfe/form/v3/submit/' . $this->action_name . '/email_args';
		$args   = apply_filters( $filter, $args, $form, $action );
		$args   = apply_filters( $filter . '/form=' . $form_name, $args, $form, $action );
		if ( ! empty( $action['name'] ) ) {
			$args = apply_filters( $filter . '/action=' . $action['name'], $args, $form, $action );
		}

		// --<
		return $args;

	}

	/**
	 * Sends the Email given a set of arguments.
	 *
	 * @since 0.2.0
	 *
	 * @param array $args The array of Email arguments.
	 * @param array $email The array of Email data.
	 * @return array|bool $args The array of Email arguments, or false on failure.
	 */
	public function form_email_send( $args, $email ) {

		// Define rules for checking Email headers.
		$rules = [
			[
				'args_key'   => 'from',
				'value_old'  => $this->form_email_item_build( $email['from_name'], $email['from_email'] ),
				'header_key' => 'From:',
			],
			[
				'args_key'   => 'reply_to',
				'value_old'  => $this->form_email_item_build( $email['reply_to_name'], $email['reply_to_email'] ),
				'header_key' => 'Reply-To:',
			],
			[
				'args_key'   => 'cc',
				'value_old'  => $email['cc'],
				'header_key' => 'Cc:',
			],
			[
				'args_key'   => 'bcc',
				'value_old'  => $email['bcc'],
				'header_key' => 'Bcc:',
			],
		];

		// Check if the Email headers have been changed.
		foreach ( $rules as $rule ) {
			$check = acf_maybe_get( $args, $rule['args_key'] );
			if ( ! empty( $check ) && $check !== $rule['value_old'] ) {
				foreach ( $args['headers'] as &$header ) {
					if ( stripos( $header, $rule['header_key'] ) !== 0 ) {
						continue;
					}
					// Repair Email header.
					$header = $rule['header_key'] . ' ' . $check;
					break;
				}
			}
		}

		// Send the Email.
		$result = wp_mail( $args['to'], $args['subject'], $args['content'], $args['headers'], $args['attachments'] );

		// Bail on failure.
		if ( false === $result ) {
			return false;
		}

		// --<
		return $args;

	}

	/**
	 * Builds an Email item according to the specification.
	 *
	 * For example "First Last <foo@bar.com>".
	 *
	 * @since 0.2.0
	 *
	 * @param string $name The name.
	 * @param string $email The email.
	 * @return string $item The built item.
	 */
	public function form_email_item_build( $name, $email ) {

		// Init return.
		$item = '';

		// Parse item from params.
		if ( ! empty( $name ) && ! empty( $email ) ) {
			$item = sprintf( '%1$s <%2$s>', $name, $email );
		} elseif ( ! empty( $email ) ) {
			$item = $email;
		}

		// --<
		return $item;

	}

	/**
	 * Deletes the Dynamic Attachments.
	 *
	 * @since 0.2.0
	 *
	 * @param array $attachments The array of Attachments data.
	 */
	public function form_attachments_delete( $attachments ) {

		// Bail if there are none.
		if ( ! empty( $attachments['delete'] ) ) {
			return;
		}

		// Delete all the Dynamic Attachments.
		foreach ( $attachments['delete'] as $file_id ) {
			wp_delete_attachment( $file_id, true );
		}

	}

}